[ECO-4942] Send/Receive Messages Spec Complete #45
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@umair-ably what was your aim in using existential types (i.e. the |
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Also, just to check — are you intending to add tests? |
I started off with a generic implementation hence the protocol itself being passed in. I didn't want the base network "layer" to know about any concrete types in case we add additional implementations of the protocol later. But on second thoughts (and from seeing your solution), I'd already implemented the concrete type to also be fairly generic so I achieve my initial aim too - I just became blind to tying all of it together from staring at this too long 😅 Thanks for this - it perfectly solves the problem! |
Yeah for sure, ideally I want to put the completed implementation of the message spec in this PR... hoping you can review this first to point out any obvious errors/deviations/unnecessary public api changes, etc, and then it'll be a good base to finish the rest off |
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Added a few general thoughts, as requested. Some of the review is quite superficial, will look in more detail at the final one.
Also, please could you make it clear where the behaviour implemented here has come from, to aid with review now and to help our future selves understand it better. My suggestion would be to make sure that:
- the code includes spec references, where they exist (I know that the code that I’m looking at now predates the existence of the spec)
- code that's based on the implementation in the JS SDK should state this and should state the specific version (i.e. commit hash) of the JS SDK that it's based on – either do this at the place where the behaviour is implemented, or in commit message, whichever seems most appropriate
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Before removing from draft please could you also tidy up the commits; i.e. in addition to what I mentioned here also make sure to remove the merge commit and to incorporate linting fixes into the commit that introduced the errors. Thanks! |
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Marking as ready for review to see what code-rabbit has got to say... will respond to other PR comments shortly |
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Actionable comments posted: 52
🧹 Outside diff range and nitpick comments (33)
Sources/AblyChat/Events.swift (2)
1-3: LGTM! Consider adding documentation.The
MessageEventenum is well-structured and follows Swift best practices. It's internal, which is appropriate for module-level use, and conforms toStringfor easy string representation.Consider adding documentation comments to explain the purpose of the enum and its case. For example:
/// Represents various events related to messages in the chat system. internal enum MessageEvent: String { /// Indicates that a new message has been created. case created = "message.created" }
1-3: Consider future extensibilityThe current implementation with a single case is clean and straightforward. However, if you anticipate adding more message events in the future, it might be worth mentioning this in a comment for other developers.
You could add a comment like:
// TODO: Add more message event cases as needed for future requirements.This would help signal to other developers that this enum is expected to grow over time.
Sources/AblyChat/Occupancy.swift (1)
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1-17: Suggestion: Add documentation for improved clarityWhile the code structure is clear, adding documentation comments would greatly enhance the readability and maintainability of this file. Consider adding:
- A brief description of the
Occupancyprotocol's purpose and its relationship with the Ably SDK.- Documentation for each method in the
Occupancyprotocol, explaining their purpose and usage.- A description of the
OccupancyEventstruct and its properties.Example for the
Occupancyprotocol:/// Represents the occupancy of a channel in the Ably real-time system. /// This protocol defines methods to subscribe to and retrieve occupancy events. public protocol Occupancy: AnyObject, Sendable, EmitsDiscontinuities { /// Subscribes to occupancy events with a specified buffering policy. /// - Parameter bufferingPolicy: The policy for buffering events. /// - Returns: A subscription to occupancy events. func subscribe(bufferingPolicy: BufferingPolicy) -> Subscription<OccupancyEvent> /// Retrieves the current occupancy event. /// - Returns: The current occupancy event. /// - Throws: An error if the retrieval fails. func get() async throws -> OccupancyEvent /// The Ably real-time channel associated with this occupancy. var channel: ARTRealtimeChannelProtocol { get } }Sources/AblyChat/EmitsDiscontinuities.swift (1)
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1-20: Overall, the file is well-structured and follows good Swift practicesThe
EmitsDiscontinuities.swiftfile contains two well-defined protocols that work together to provide a system for handling and emitting discontinuities. The use of proper access control (publicandinternal) and the@MainActorattribute demonstrates attention to detail and consideration for thread safety.A few points to consider:
- Ensure that the change from optional to non-optional
channelinHandlesDiscontinuitydoesn't negatively impact conforming types.- Consider adding documentation to the
EmitsDiscontinuitiesprotocol to match the level of detail provided forHandlesDiscontinuity.- If there are any specific requirements or constraints for conforming types, it might be beneficial to add them as comments to guide implementers.
Sources/AblyChat/Metadata.swift (3)
1-3: Acknowledge the ongoing work and suggest improvements to the commentThank you for providing context about the current implementation and acknowledging the potential for future improvements. To enhance clarity:
- Consider adding more context about the "Headers" reference. This might not be immediately clear to all readers.
- It would be beneficial to update the GitHub issue (Decide correct Swift types for user-provided data #13) with the current implementation details and reasoning. This will help track the evolution of this type and facilitate future discussions.
4-9: Approve theMetadataValueenum and suggest minor enhancementsThe
MetadataValueenum is a good implementation that enhances type safety and clarity in representing metadata. The chosen cases and conformances are appropriate.Consider the following suggestions:
If floating-point numbers are needed, you might want to add a
Doublecase:case number(Double) // Instead of IntThis would allow for both integer and floating-point values.
Add documentation comments for the enum and its cases to improve code readability:
/// Represents a value in the metadata dictionary. public enum MetadataValue: Sendable, Codable, Hashable { /// A string value. case string(String) /// A numeric value. case number(Int) // or Double /// A boolean value. case bool(Bool) /// Represents a null value. case null }
11-11: Approve theMetadatatypealias update and suggest documentationThe updated
Metadatatypealias is a good improvement, providing more structure and type safety.To further enhance code clarity, consider adding a documentation comment:
/// A dictionary representing metadata, where keys are strings and values are optional `MetadataValue`s. public typealias Metadata = [String: MetadataValue?]This comment helps developers understand the purpose and structure of the
Metadatatype at a glance.Sources/AblyChat/Version.swift (2)
1-4: Address the TODO comment and track it properlyThe TODO comment indicates that the implementation is copied from chat-js. It's important to ensure that this is addressed and tracked properly.
Consider the following actions:
- Review the referenced issue Define how to send up agent info #76 to ensure it accurately describes the task of implementing agent info sending.
- If the issue is not yet created or doesn't fully capture the TODO, create or update the issue accordingly.
- Replace the TODO comment with a more specific comment referencing the issue, e.g., "// Implementation of agent info sending. See issue Define how to send up agent info #76".
This will help in tracking and addressing this task in the future.
1-18: Overall structure is good, but consider further improvementsThe file introduces necessary versioning and channel options for the Ably-based chat application. The overall structure is good, but there are several areas for improvement:
Documentation: Add comprehensive documentation for each public constant, explaining their purpose and usage.
Organization: Consider moving configuration constants to a separate
Config.swiftfile for better maintainability.Naming: Ensure consistency in naming conventions, possibly prefixing with "ably" where appropriate.
Concurrency: The use of @preconcurrency is a temporary solution. Plan for a more robust approach to handle concurrency issues in the future.
Spec Compliance: Ensure all implementations align with the Ably specification and include references where applicable.
To improve the overall architecture:
- Create a
Config.swiftfile for all configuration-related constants.- Implement a
Versionstruct to encapsulate version-related functionality.- Consider creating an
AblyChannelOptionsstruct to wrapARTRealtimeChannelOptionsand handle any Ably-specific configurations.These changes will enhance the modularity and maintainability of the codebase while addressing the current limitations and concerns.
Tests/AblyChatTests/Mocks/MockChannels.swift (1)
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24-35: Consider implementing or documenting unimplemented methodsWhile not directly related to the current changes, I noticed that several methods in the
MockChannelsclass are not implemented and throw fatal errors. This includesexists(_:),release(_:callback:), andrelease(_:).To improve the robustness of your test suite and prevent unexpected crashes during testing, consider:
- Implementing these methods with mock behavior that suits your test scenarios.
- If these methods are intentionally left unimplemented, add comments explaining why and in which scenarios they're not needed.
- If these methods are truly not needed, consider removing them from the protocol or creating a separate protocol for the subset of methods you're actually using in tests.
Sources/AblyChat/Rooms.swift (2)
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31-45: Critical: Updategetmethod signature to match protocolThe
getmethod implementation inDefaultRoomsdoesn't match the updated protocol signature. It should be marked asasync.Please update the method signature as follows:
- internal func get(roomID: String, options: RoomOptions) throws -> any Room { + internal func get(roomID: String, options: RoomOptions) async throws -> any Room {This change is necessary to conform to the
Roomsprotocol and maintain consistency with the async nature of the operation.
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1-45: Summary of changes and recommendations
- The
Roomsprotocol has been updated to make thegetmethod async, which is a good improvement.- The
DefaultRoomsimplementation needs to be updated to match the new async signature of thegetmethod in theRoomsprotocol.- A new
ChatAPIparameter has been added when creating aDefaultRoom. More context is needed to understand the purpose and impact of this change.Please address the inconsistency in the
getmethod signature and provide more information about theChatAPIaddition. Once these issues are resolved, the changes look good overall.Consider documenting the purpose of the
ChatAPIin the codebase, especially its relationship withDefaultRoom. This will help maintain clarity as the project evolves.Tests/AblyChatTests/Mocks/MockRealtime.swift (3)
12-12: LGTM! Consider adding a customizable clientId.The change from throwing a
fatalErrorto returning a hardcoded"mockClientId"is a good improvement. It allows tests to use theclientIdproperty without causing a fatal error, which is more appropriate for a mock object.Consider making the
clientIdcustomizable by initializing it in the constructor. This would provide more flexibility in testing different scenarios:class MockRealtime: NSObject, RealtimeClientProtocol, Sendable { let clientId: String? init(clientId: String? = "mockClientId", channels: MockChannels = .init(channels: [])) { self.clientId = clientId self.channels = channels } // ... rest of the class }
66-68: LGTM! Consider implementing a basic mock behavior.The addition of the
requestmethod to match theRealtimeClientProtocolis appropriate. The current implementation throwing afatalErroris consistent with other unimplemented methods in this mock.For future iterations, consider implementing a basic mock behavior for this method. This could involve:
- Storing the parameters for later assertion in tests.
- Allowing customization of the response in the mock's initializer.
- Calling the callback with a predefined response.
Here's a potential implementation:
class MockRealtime: NSObject, RealtimeClientProtocol, Sendable { var lastRequestParams: (method: String, path: String, params: [String: String]?, body: Any?, headers: [String: String]?)? var mockRequestResponse: (HTTPURLResponse, Data?)? func request(_ method: String, path: String, params: [String: String]?, body: Any?, headers: [String: String]?, callback: @escaping ARTHTTPPaginatedCallback) throws { lastRequestParams = (method, path, params, body, headers) if let (response, data) = mockRequestResponse { callback(response, data, nil) } else { callback(HTTPURLResponse(), nil, NSError(domain: "MockRealtime", code: 0, userInfo: [NSLocalizedDescriptionKey: "No mock response set"])) } } // ... rest of the class }This implementation would allow more flexible and thorough testing of code that uses this method.
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1-68: Overall, good progress on the MockRealtime implementation.The changes made to this mock object are appropriate and contribute to a more useful implementation for testing purposes. The
clientIdproperty now returns a value instead of throwing an error, and the newrequestmethod has been added to match the protocol requirements.For future iterations, consider the following architectural improvements:
- Implement a strategy for customizing mock behaviors, possibly through dependency injection or a builder pattern.
- Add documentation comments to explain the purpose and usage of each mock method, especially for complex ones like
request.- Consider creating a separate configuration object for the mock to manage all customizable behaviors in one place.
These improvements would make the mock more flexible and easier to use in various test scenarios, enhancing the overall testability of the system.
Tests/AblyChatTests/MessageSubscriptionTests.swift (2)
35-35: LGTM: Updated MessageSubscription initializationThe
MessageSubscriptioninitialization has been correctly updated to include the new closure parameter. This change is consistent with the modifications to theMessageSubscriptionclass.Consider extracting the
fatalErrorclosure to a separate constant for better readability and reusability across tests. For example:let notImplementedClosure: (Any) -> Void = { _ in fatalError("Not implemented") } let subscription = MessageSubscription(bufferingPolicy: .unbounded, notImplementedClosure)This would make the test setup more concise and easier to maintain.
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45-53: LGTM: Effective test for getPreviousMessagesThe
mockGetPreviousMessagestest method effectively verifies thegetPreviousMessagesfunctionality ofMessageSubscription. The use ofMockPaginatedResultand the type casting workaround are appropriate given the compiler limitations.To improve clarity, consider adding a comment explaining why the type casting is necessary. For example:
// Type casting is needed to work around compiler limitations with parameterized protocol types let resultAsConcreteType = try #require(result as? MockPaginatedResult<Message>)This would help future developers understand the reason for this seemingly unusual code.
Tests/AblyChatTests/DefaultRoomsTests.swift (4)
9-9: LGTM! Consider extracting the channel name as a constant.The addition of a specific channel configuration to the
MockRealtime.create()call improves the test's realism and alignment with the actual implementation. This change is good and makes the test more robust.To improve maintainability, consider extracting the channel name "basketball::$chat::$chatMessages" as a constant at the class level, as it might be used in other tests and could change in the future.
private let testChannelName = "basketball::$chat::$chatMessages"Then use it in the test:
let realtime = MockRealtime.create(channels: .init(channels: [.init(name: testChannelName)]))
28-28: LGTM! Consider using the suggested constant for the channel name.The change is consistent with the modification in the first test method, which is good for maintaining uniformity across tests.
As suggested for the previous test, consider using the extracted constant for the channel name here as well:
let realtime = MockRealtime.create(channels: .init(channels: [.init(name: testChannelName)]))This will improve maintainability and ensure consistency across all tests.
46-46: LGTM! Great job on comprehensive test coverage.The change is consistent with the modifications in the previous test methods, maintaining uniformity across the test suite. It's excellent to see thorough testing, including this important edge case for mismatched options.
As suggested for the previous tests, consider using the extracted constant for the channel name here as well:
let realtime = MockRealtime.create(channels: .init(channels: [.init(name: testChannelName)]))This will improve maintainability and ensure consistency across all tests.
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1-68: Overall, great improvements to the test suite!The changes consistently enhance the specificity and realism of the tests across all methods. This is a positive step towards more robust and reliable testing.
To further improve the code, consider the following refactoring:
Extract the channel name as a constant at the class level:
private let testChannelName = "basketball::$chat::$chatMessages"Create a helper method for creating the
MockRealtimeinstance:private func createMockRealtime() -> MockRealtime { return MockRealtime.create(channels: .init(channels: [.init(name: testChannelName)])) }Use this helper method in all test methods:
let realtime = createMockRealtime()This refactoring will centralize the
MockRealtimecreation logic, making it easier to maintain and update in the future if needed.Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift (3)
5-5: LGTM! Consider adding a comment explaining the purpose ofproperties.The addition of the
propertiesproperty and its initialization in the constructor are good changes that likely reflect updates in the actualRealtimeChannelclass. This enhances the mock's fidelity to the real implementation.Consider adding a brief comment explaining the purpose and usage of the
propertiesproperty in this mock class. This would improve code readability and maintainability.Also applies to: 17-17
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20-45: Good implementation. Consider movingCounterto a separate file.The
Counterclass is well-implemented with proper thread safety, which is crucial for potential use in concurrent test scenarios. The use of@unchecked Sendableis appropriate here.Consider moving the
Counterclass to a separate file in your test utilities. This would improve reusability and keep theMockRealtimeChannelclass focused on its primary responsibility. You could then import and useCounterwhere needed.Example:
// TestUtilities/Counter.swift public class Counter: @unchecked Sendable { // ... (existing implementation) } // MockRealtimeChannel.swift import TestUtilities final class MockRealtimeChannel: NSObject, RealtimeChannelProtocol { // ... (use Counter as before) }
146-148: Good start. Consider enhancing theonmethod for more comprehensive mocking.The change from
fatalErrorto returning anARTEventListeneris an improvement, making the mock more functional.To make this mock more useful for testing, consider enhancing the
onmethod to capture the event and callback for later verification. This would allow tests to check if specific events were subscribed to with the correct callbacks. Here's a possible implementation:class MockRealtimeChannel: NSObject, RealtimeChannelProtocol { // ... var capturedEvents: [(ARTChannelEvent, (ARTChannelStateChange) -> Void)] = [] func on(_ event: ARTChannelEvent, callback: @escaping (ARTChannelStateChange) -> Void) -> ARTEventListener { capturedEvents.append((event, callback)) return ARTEventListener() } // ... }This enhancement would allow tests to verify the correct usage of the
onmethod in the code under test.Tests/AblyChatTests/DefaultRoomTests.swift (1)
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1-130: Summary of changes and suggestions for improvementThe changes in this file consistently add a
chatAPIparameter to theDefaultRoominitializer across all test methods. While this change appears to be correctly implemented, there are a few points to consider for improving the test suite:
- Verify that the introduction of
ChatAPIdoesn't unintentionally alter the existing test behavior.- Consider adding new test cases that specifically target the interaction between
DefaultRoomandChatAPI.- Ensure that error handling and edge cases related to
ChatAPIare adequately covered in the test suite.- Review the need for mock objects for
ChatAPIto allow for more granular control in testing.To improve the overall test architecture, consider the following:
- Create a separate test file for
ChatAPI-specific tests if it doesn't already exist.- Implement a mock version of
ChatAPIfor more precise control over its behavior in tests.- Add integration tests that cover the interaction between
DefaultRoomandChatAPIin various scenarios.These changes will help ensure that the new
ChatAPIfunctionality is thoroughly tested and that the existing tests remain valid with the new implementation.Sources/AblyChat/Timeserial.swift (1)
16-91: Maintain consistency in documentation commentsThe code contains comments like
// Timeserial Protocoland// DefaultTimeserial Class, butDefaultTimeserialis astruct, not aclass. For clarity and accuracy, update the comment to reflect thatDefaultTimeserialis a struct.Apply this diff:
-// DefaultTimeserial Class +// DefaultTimeserial StructSources/AblyChat/PaginatedResult.swift (2)
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3-13: Remove Redundant Generic Parameter or Associated Type in ProtocolIn the declaration of
public protocol PaginatedResult<T>, you are using both a generic type parameter<T>and anassociatedtype T. This is redundant and may cause confusion or compiler errors. Consider removing the generic type parameter and relying solely on theassociatedtype T.Apply this diff to fix the redundancy:
-public protocol PaginatedResult<T>: AnyObject, Sendable { - associatedtype T +public protocol PaginatedResult: AnyObject, Sendable { + associatedtype T
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8-8: Address the TODO Comment Regarding UnwrappingThere's a TODO note to consider how to avoid the need for an unwrap in the
nextproperty. I can help address this issue. Would you like me to suggest a solution or open a GitHub issue to track this task?Example/AblyChatExample/MessageDemoView.swift (1)
31-31: Remove unnecessary empty else blockThe else block at line 31 is empty and can be removed to clean up the code.
Apply this diff to remove the empty else block:
- } else {}Sources/AblyChat/ChatAPI.swift (3)
61-61: Ensure consistent naming forroomIdIn the
Messageinitializer, you're usingroomIDwhile the variable isroomId. To maintain consistency and adhere to Swift naming conventions, consider usingroomIdthroughout the codebase.
75-75: Address the TODO comment for occupancy/presence improvementsThere's a TODO comment indicating that this function should be improved as part of occupancy/presence work.
Would you like assistance in implementing these improvements or opening a GitHub issue to track this task?
86-89: Provide a more descriptive error when response items are missingWhen
paginatedResponse?.items.firstisnil, the function throws an unknown error. Providing a more descriptive error message would aid in debugging.Consider throwing an error that clearly indicates the absence of items in the response, such as:
continuation.resume(throwing: ARTErrorInfo.create(withCode: 40002, message: "No items found in the response"))Sources/AblyChat/DefaultMessages.swift (1)
125-125: Remove unused parameterroomIdThe parameter
roomIdis not used in the functionhandleChannelEvents. Consider removing it to clean up the code.Apply this diff:
-private func handleChannelEvents(roomId _: String) { +private func handleChannelEvents() {Ensure to update any calls to this function accordingly.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (30)
- AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved (1 hunks)
- Example/AblyChatExample.xcodeproj/project.pbxproj (1 hunks)
- Example/AblyChatExample/AblyChatExampleApp.swift (1 hunks)
- Example/AblyChatExample/ContentView.swift (0 hunks)
- Example/AblyChatExample/MessageDemoView.swift (1 hunks)
- Example/AblyChatExample/Mocks/MockRealtime.swift (3 hunks)
- Package.resolved (1 hunks)
- Package.swift (2 hunks)
- [email protected] (1 hunks)
- Sources/AblyChat/ChatAPI.swift (1 hunks)
- Sources/AblyChat/DefaultMessages.swift (1 hunks)
- Sources/AblyChat/Dependencies.swift (1 hunks)
- Sources/AblyChat/EmitsDiscontinuities.swift (1 hunks)
- Sources/AblyChat/Events.swift (1 hunks)
- Sources/AblyChat/Headers.swift (1 hunks)
- Sources/AblyChat/Message.swift (2 hunks)
- Sources/AblyChat/Messages.swift (3 hunks)
- Sources/AblyChat/Metadata.swift (1 hunks)
- Sources/AblyChat/Occupancy.swift (1 hunks)
- Sources/AblyChat/PaginatedResult.swift (2 hunks)
- Sources/AblyChat/Room.swift (2 hunks)
- Sources/AblyChat/Rooms.swift (1 hunks)
- Sources/AblyChat/Timeserial.swift (1 hunks)
- Sources/AblyChat/Version.swift (1 hunks)
- Tests/AblyChatTests/DefaultRoomTests.swift (4 hunks)
- Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
- Tests/AblyChatTests/MessageSubscriptionTests.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockChannels.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRealtime.swift (2 hunks)
- Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift (3 hunks)
💤 Files with no reviewable changes (1)
- Example/AblyChatExample/ContentView.swift
✅ Files skipped from review due to trivial changes (2)
- Example/AblyChatExample.xcodeproj/project.pbxproj
- Package.resolved
🧰 Additional context used
📓 Learnings (2)
Example/AblyChatExample/AblyChatExampleApp.swift (1)
Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/ContentView.swift:35-118 Timestamp: 2024-09-22T21:32:01.793Z Learning: Skip code review suggestions for `ContentView.swift` in the `Example/AblyChatExample` project.Tests/AblyChatTests/MessageSubscriptionTests.swift (1)
Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/Mocks/MockSubscription.swift:0-0 Timestamp: 2024-09-22T20:24:30.986Z Learning: In mock implementations of `MockSubscription`, adding optional parameters for buffering policies is unnecessary.
🔇 Additional comments (36)
Example/AblyChatExample/AblyChatExampleApp.swift (1)
7-7: LGTM! Please provide more context aboutMessageDemoView.The change from
ContentViewtoMessageDemoViewas the main view of the app aligns with the PR objectives of addressing the divergence between macOS and iOS features. This modification likely represents the new UI for the chat functionality mentioned in the PR summary.To ensure that
MessageDemoViewis properly implemented and imported, could you please run the following verification script?Additionally, could you provide more information about
MessageDemoView? Specifically:
- Does it implement the OS version checking mentioned in the PR objectives?
- How does it differ from the previous
ContentViewin terms of functionality?- Are there any new public APIs or changes to existing ones introduced with this view?
This information will help ensure that the implementation aligns with the PR objectives and maintains the expected functionality.
✅ Verification successful
Verified!
MessageDemoViewis properly implemented with appropriate OS version checks.The verification confirms that
MessageDemoViewis correctly defined and includes necessary compiler directives for OS-specific functionality as outlined in the PR objectives.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation and import of MessageDemoView # Test 1: Check if MessageDemoView is defined in the project echo "Searching for MessageDemoView definition:" rg --type swift "struct\s+MessageDemoView\s*:\s*View" Example/AblyChatExample # Test 2: Check if MessageDemoView is imported (in case it's in a separate module) echo "Checking for MessageDemoView import:" rg --type swift "import.*MessageDemoView" Example/AblyChatExample # Test 3: Check for any compiler directives related to OS version echo "Checking for OS version related compiler directives:" rg --type swift "#if.*os\(" Example/AblyChatExampleLength of output: 649
Sources/AblyChat/Headers.swift (2)
3-3: Excellent addition of Codable and Hashable conformance!The addition of
CodableandHashableconformance to theHeadersValueenum is a positive change. This enhancement allows for easier serialization/deserialization (Codable) and enables the use ofHeadersValuein sets or as dictionary keys (Hashable). These additions improve the versatility and usability of the enum without introducing any apparent issues.
5-5: Approved: Simplified number case, but verify impact.The change from
NSNumbertoIntfor thenumbercase is a good simplification that aligns better with Swift's native types. However, this modification may have some implications:
- Existing code relying on
NSNumberfunctionality might need updates.- The ability to represent floating-point numbers could be limited now.
Please ensure that this change doesn't negatively impact other parts of the codebase that might be using the
numbercase.Let's verify the usage of the
numbercase in the codebase:✅ Verification successful
Verification Complete: No Issues Found
The change from
NSNumbertoIntfor thenumbercase inHeadersValuedoes not impact other parts of the codebase. No usages ofHeadersValue.numberwere found outside its definition, ensuring that this modification is safe and aligns with Swift's native types.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for usages of HeadersValue.number case in the codebase # Search for HeadersValue.number usage echo "Searching for HeadersValue.number usage:" rg --type swift "HeadersValue\.number" -C 3 # Search for any HeadersValue enum usage echo "\nSearching for any HeadersValue enum usage:" rg --type swift "HeadersValue" -C 3Length of output: 1026
Sources/AblyChat/Occupancy.swift (1)
9-9: Approved: Enhanced serialization capabilities for OccupancyEventThe addition of
EncodableandDecodableconformance to theOccupancyEventstruct is a positive change. This enhancement allows for easier serialization and deserialization of the struct, which can be particularly useful for data persistence, network communication, or integration with other parts of the system that work with serialized data formats like JSON.This change:
- Improves the versatility of the
OccupancyEventstruct.- Aligns with best practices for data structures that may need to be converted to/from various formats.
- Doesn't introduce any breaking changes to the existing functionality.
Sources/AblyChat/EmitsDiscontinuities.swift (2)
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1-5: LGTM: EmitsDiscontinuities protocol looks goodThe
EmitsDiscontinuitiesprotocol is well-defined and its purpose is clear. It provides a method for subscribing to discontinuity events, which aligns with the protocol's name and intended use.
7-20: LGTM: HandlesDiscontinuity protocol is well-designedThe
HandlesDiscontinuityprotocol is well-structured and its purpose is clear. The use of@MainActoris appropriate for ensuring thread safety when dealing with potential UI updates.However, I have a question about the commented-out line:
Could you explain the reasoning behind changing
channelfrom an optional (RealtimeChannelProtocol?) to a non-optional type? This change might impact how conforming types handle cases where a channel might not be immediately available.To verify the impact of this change, let's check for any uses of this protocol:
✅ Verification successful
Verified: Change to
channelproperty is consistent across conforming typesThe update to make the
channelproperty non-optional in theHandlesDiscontinuityprotocol is consistently applied in all conforming types, specifically in theDefaultMessagesclass. No other conformers were found that might be affected by this change.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for uses of HandlesDiscontinuity protocol rg --type swift "HandlesDiscontinuity" -C 5Length of output: 1693
Sources/AblyChat/Metadata.swift (1)
1-11: Overall assessment: Good improvements with minor suggestionsThe changes in this file significantly enhance type safety and clarity in metadata representation. The introduction of the
MetadataValueenum and the updatedMetadatatypealias are well-thought-out improvements.The suggestions provided (considering
Doublefor numbers, adding documentation comments) are minor and aimed at further improving code clarity and flexibility.These changes align well with the PR objectives of enhancing code organization and addressing type-related concerns.
Tests/AblyChatTests/Mocks/MockChannels.swift (1)
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1-35: Overall assessment: Changes are acceptable with minor improvements suggestedThe addition of the new
getmethod with options parameter improves the mock's compatibility with the real implementation. The changes are minimal and don't introduce any breaking changes.However, there are opportunities for improvement:
- Consider handling or documenting the unused
optionsparameter in the new method.- Address the unimplemented methods in the class to improve the overall robustness of the mock.
These suggestions will enhance the clarity and completeness of the mock implementation, leading to more reliable and maintainable tests.
Sources/AblyChat/Rooms.swift (2)
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4-4: Approved: Async update togetmethodThe change to make the
getmethod async is a good improvement, aligning with modern Swift concurrency practices. This change enhances the protocol's flexibility for asynchronous operations.To ensure this change doesn't break existing implementations, please run the following script:
#!/bin/bash # Description: Check for any non-async implementations of the `get` method in `Rooms` protocol conformances # Test: Search for non-async implementations of `get` method rg --type swift 'class.*:.*Rooms.*\{' -A 10 | rg 'func\s+get.*\{' | rg -v 'async'If this script returns any results, those implementations need to be updated to match the new async signature.
42-42: Clarification needed: Addition ofChatAPIThe addition of
ChatAPIas a parameter when creating aDefaultRoomseems to be a significant change. Could you provide more context on why this was added and how it relates to the PR objectives?To understand the impact of this change, let's check how
ChatAPIis used inDefaultRoom:This will help us understand how
ChatAPIis integrated intoDefaultRoomand ensure it's being used correctly.✅ Verification successful
The addition of
ChatAPIis verified and aligns with the PR objectives.
ChatAPIis correctly integrated intoDefaultRoom, ensuring enhanced chat functionalities and improved testability.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check usage of ChatAPI in DefaultRoom # Test: Search for ChatAPI usage in DefaultRoom rg --type swift 'class DefaultRoom' -A 20 | rg 'ChatAPI'Length of output: 81
Script:
#!/bin/bash # Description: Search for all occurrences of ChatAPI in the Swift codebase rg --type swift 'ChatAPI'Length of output: 1451
Script:
#!/bin/bash # Description: Search for all DefaultRoom initializations with ChatAPI parameter rg --type swift 'DefaultRoom\(' | rg 'chatAPI: ChatAPI'Length of output: 1005
Package.swift (1)
8-8: Verify the macOS version update.The macOS platform version has been updated from .v11 to .v12. This change increases the minimum required macOS version for the package, which may break compatibility with older macOS versions.
However, this seems inconsistent with the PR objective of "not supporting macOS 16". Could you please clarify the reasoning behind this change and confirm if this aligns with the intended macOS support strategy?
AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved (1)
2-2: LGTM: Updated originHash reflects changes in dependenciesThe
originHashupdate is consistent with the modifications made to the package dependencies, particularly the changes to theably-cocoapackage.[email protected] (6)
1-1: LGTM: Swift tools version and package name are appropriate.The Swift tools version is set to 6.0, which is up-to-date and allows for the use of the latest Swift features. The package name "AblyChat" correctly matches the project name mentioned in the PR objectives.
Also applies to: 5-6
7-11: Verify platform versions and tvOS support.The supported platforms (macOS v12, iOS v14, tvOS v14) seem to have lower minimum versions than what's mentioned in the PR objectives (which target iOS 16). Additionally, tvOS support is included, which wasn't mentioned in the PR objectives.
Please confirm if these platform versions are intentional and if tvOS support is required for this project.
12-19: LGTM: Product definition is correct.The library product "AblyChat" is properly defined and targets the "AblyChat" module. This aligns with the package name and structure.
25-28: Clarify the need for swift-argument-parser.The inclusion of swift-argument-parser suggests command-line functionality, which wasn't mentioned in the PR objectives. Could you please clarify the intended use of this dependency in the project?
54-66: Clarify the purpose of the BuildTool target.An executable target named "BuildTool" is defined, which depends on ArgumentParser and AsyncAlgorithms. The purpose of this target and its relation to the main AblyChat functionality is not clear from the PR objectives or comments. Could you please provide more information about the intended use of this BuildTool and why it's needed in the package?
1-68: Summary of Package.swift reviewOverall, the package definition is well-structured and aligns with the project goals. However, there are a few points that require attention:
- Verify the minimum platform versions, especially for iOS, and confirm if tvOS support is intended.
- Consider using a specific version or tag for the ably-cocoa dependency instead of the main branch.
- Clarify the need for the swift-argument-parser dependency and its intended use in the project.
- Provide more information about the purpose of the BuildTool target and its relation to the main AblyChat functionality.
Addressing these points will improve the package definition's clarity and stability. Once these are resolved, the package structure looks good to proceed with implementation.
Tests/AblyChatTests/MessageSubscriptionTests.swift (3)
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5-19: LGTM: Well-structured mock class for testingThe
MockPaginatedResultclass is well-implemented for testing purposes. It correctly conforms to thePaginatedResultprotocol and usesfatalErrorfor unimplemented methods, which is a good practice for mock objects. The generic type parameterTprovides flexibility for testing different types of paginated results.
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26-31: LGTM: Well-structured test methodThe
withMockAsyncSequencetest method is well-implemented. It effectively tests theMessageSubscriptionusing a mock async sequence and verifies the expected output. The use of#expectfor assertion is appropriate.
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1-53: Overall: Well-structured and comprehensive test suiteThe changes in this file enhance the test coverage for the
MessageSubscriptionclass. The addition of theMockPaginatedResultclass and the updates to the test methods, particularly theemitmethod, align well with the changes in the main implementation.Key points:
- The new
MockPaginatedResultclass provides a solid foundation for testing paginated results.- The updated
emittest method correctly incorporates the new closure parameter inMessageSubscriptioninitialization.- The
mockGetPreviousMessagestest effectively handles compiler limitations with parameterized protocol types.These changes contribute to a more robust and comprehensive test suite for the
MessageSubscriptionfunctionality.Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift (1)
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1-224: Overall, good progress on enhancing the mock implementation.The changes to
MockRealtimeChannelalign well with the PR objectives of improving code organization and preparing for future implementations. The addition of thepropertiesproperty, theCounterclass, and the functionalonmethod are all positive steps towards a more realistic and useful mock.To further improve this implementation:
- Consider adding comments to explain the purpose of new properties and methods.
- Move the
Counterclass to a separate file for better reusability.- Enhance the
onmethod to capture events and callbacks for more comprehensive testing capabilities.These changes will make your tests more robust and the mock more versatile for future development.
Tests/AblyChatTests/DefaultRoomTests.swift (4)
53-53: Consistent change across test methodsThe addition of the
chatAPIparameter is consistently applied here as well.Please refer to the previous comment regarding the verification and potential improvements related to this change.
115-115: Verify error handling with newchatAPIparameterThe addition of the
chatAPIparameter is consistently applied in this test method for handling detach failures.Please ensure that the error handling behavior is not affected by the introduction of the
chatAPIparameter. Consider adding specific test cases to verify how errors fromChatAPIare propagated and handled in theDefaultRoomclass.To verify the error handling, run the following script:
#!/bin/bash # Description: Verify the error handling in DefaultRoom related to ChatAPI # Test: Check if there's error handling related to chatAPI in DefaultRoom ast-grep --lang swift --pattern 'class DefaultRoom { $$$ func $methodName($_) { $$$ do { $$$ $chatAPI.$_ $$$ } catch { $$$ } $$$ } $$$ }' # Test: Check if there are any specific error types related to ChatAPI ast-grep --lang swift --pattern 'enum $ErrorType: Error { $$$ case $chatAPIError($_) $$$ }'
82-82: Verify detach behavior with newchatAPIparameterThe addition of the
chatAPIparameter is consistently applied in this test method for detaching channels.Please ensure that the detach behavior is not affected by the introduction of the
chatAPIparameter. Consider adding specific test cases to verify the interaction betweenDefaultRoom,ChatAPI, and the detach process.To verify the detach behavior, run the following script:
20-20: Verify the impact of addingchatAPIparameterThe addition of the
chatAPIparameter to theDefaultRoominitializer is noted. This change introduces a new dependency in the test setup.Please consider the following:
- Ensure that this change doesn't alter the behavior being tested in this specific test case.
- Verify if mock objects for
ChatAPIare needed for more granular control in testing.- Consider adding test cases that specifically target the interaction between
DefaultRoomandChatAPI.To verify the usage of
ChatAPIin theDefaultRoomclass, run the following script:Sources/AblyChat/Dependencies.swift (1)
18-18: Ensure consistent method signatures in protocol hierarchyThe added method
func get(_ name: String, options: ARTRealtimeChannelOptions) -> ChannelinRealtimeChannelsProtocoloverloads the existingget(_ name: String) -> Channelmethod. Please ensure that all conforming types implement this new method and that overloading does not introduce ambiguity in method resolution.Consider reviewing the implementations to confirm that they conform to the updated protocol.
Sources/AblyChat/Message.swift (1)
10-13: Verify handling of optionalclientIDandcreatedAtpropertiesChanging
clientIDandcreatedAtto optional types may impact code that assumes these values are always present. Please ensure that all usages of these properties throughout the codebase correctly handlenilvalues to prevent potential runtime errors.Sources/AblyChat/Room.swift (3)
23-25: LGTM!The addition of
chatAPIand_messagesproperties is appropriate and correctly implemented.
39-51: Initializer updated correctly withchatAPIparameter.The
chatAPIparameter is properly added to the initializer, and the properties are correctly initialized.
55-55: Implementedmessagesproperty correctly.The
messagesproperty now returns the_messagesinstance, fulfilling the protocol requirement.Example/AblyChatExample/Mocks/MockRealtime.swift (3)
1-1: Verify the use of@preconcurrencywith theAblyimportThe
@preconcurrencyattribute suppresses concurrency warnings for the imported module. While this is acceptable as a temporary measure, consider ensuring that theAblylibrary and its types are fully compatible with Swift concurrency to leverage concurrency features safely.
45-46: Ensure thread safety of thepropertiespropertyIntroducing
let properties: ARTChannelPropertiesadds state to theChannelclass. Verify thatARTChannelPropertiesis immutable or accessed safely in concurrent contexts to prevent data races or inconsistent state.
47-49: Validate the initializer forChannelThe initializer accepts
ARTChannelProperties. Ensure that initializing with these properties doesn't introduce concurrency issues, especially if the properties contain mutable state.Sources/AblyChat/DefaultMessages.swift (2)
88-90:⚠️ Potential issueAvoid using
fatalErrorin public methodsUsing
fatalError("not implemented")in a public method can cause the application to crash at runtime. If the method is not implemented yet, consider implementing it or, if it's a placeholder for future functionality, throw an appropriate error or mark the method as unavailable using@available(*, unavailable).⛔ Skipped due to learnings
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#33 File: Sources/AblyChat/Rooms.swift:9-64 Timestamp: 2024-08-29T10:55:26.337Z Learning: When reviewing code, do not ask lawrence-forooghian about "not yet implemented" `fatalError` calls.
171-179: Handle missingchannelSerialappropriatelyIn
resolveSubscriptionStart, there is a possibility thatchannel.properties.channelSerialisnileven when the channel is in theattachedstate. Currently, an error is thrown. Ensure that this scenario is handled gracefully, possibly with a fallback mechanism or a more descriptive error message to aid debugging.Run the following script to check how often
channelSerialisnilwhen the channel isattached:✅ Verification successful
Handling of missing
channelSerialis appropriateThe
resolveSubscriptionStartfunction correctly checks ifchannelSerialisniland throws a descriptive error when necessary. This ensures that the scenario wherechannelSerialis missing is handled gracefully, aiding in debugging.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify occurrences where channelSerial is nil when channel is attached. # Test: Search for instances accessing channelSerial and check for nil checks. # Expect: Proper handling when channelSerial is nil. rg --type swift 'channel\.properties\.channelSerial' -A 5Length of output: 583
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Actionable comments posted: 9
🧹 Outside diff range and nitpick comments (10)
Sources/AblyChat/PaginatedResult.swift (3)
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3-13: Consider addressing the TODO comment for unwrappingThe TODO comment suggests reconsidering the need for unwrapping. Consider exploring alternatives that don't require unwrapping, such as using a non-optional type or providing a default value. This could improve the API's ease of use and reduce the potential for runtime errors.
Would you like assistance in exploring alternative designs that don't require unwrapping?
15-46: Approved with a suggestion for improved clarityThe
ARTHTTPPaginatedCallbackWrapperimplementation looks good. It effectively handles error cases and decodes the response as expected.To improve clarity, consider adding a brief comment explaining what
CHA-M5iandCHA-M6brefer to. This would help other developers understand the context of these requirements without needing to look them up externally.
73-82: LGTM with a suggestion for potential refactoringThe
firstproperty is correctly implemented, mirroring the structure of thenextproperty. This consistency is good for maintainability.Consider refactoring the
nextandfirstproperties to reduce code duplication. You could create a private method that takes a closure parameter to differentiate betweennextandfirstcalls, which both properties could then use.Sources/AblyChat/Messages.swift (2)
47-75: Approved with suggestion: toDictionary() method added to QueryOptionsThe addition of the
toDictionary()method is a good improvement, providing a convenient way to convertQueryOptionsto a dictionary format suitable for API requests. The handling of all properties, including the newtimeSerial, is comprehensive.Suggestion for improvement:
Consider using a more type-safe approach for thestartandendproperties. Currently, they are converted to strings using string interpolation, which might not provide the desired format for API requests.Consider updating the handling of
startandendproperties as follows:if let start { - dict["start"] = "\(start)" + dict["start"] = ISO8601DateFormatter().string(from: start) } if let end { - dict["end"] = "\(end)" + dict["end"] = String(end) }This change ensures that the
startdate is properly formatted as an ISO8601 string, and theendtimeserial is correctly converted to a string.
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1-128: Overall: Significant improvements with some follow-up tasksThe changes in this file represent a substantial improvement to the messaging system's design, particularly in terms of flexibility, consistency, and error handling. Key improvements include:
- Adding
@MainActorto theMessagesprotocol.- Making the
subscribemethod asynchronous and error-throwing.- Updating
QueryOptionsto use timeserials.- Adding a
toDictionary()method toQueryOptions.- Refactoring
MessageSubscriptionto use a more flexible design.These changes will likely require updates in implementing classes and calling code throughout the project.
Next steps:
- Address the TODO regarding the representation of start and end dates in
QueryOptions.- Ensure all conforming types and usages are updated to reflect these changes.
- Consider adding more comprehensive error handling, especially for the new asynchronous methods.
- Update documentation to reflect these API changes.
To facilitate a smooth transition and ensure consistency across the codebase, consider creating a migration guide for these changes. This guide could include:
- A summary of the API changes.
- Examples of how to update existing code to use the new APIs.
- Any necessary steps for error handling with the new asynchronous methods.
- Best practices for working with the updated
QueryOptionsandMessageSubscriptionstructs.This will help team members understand and implement these changes consistently across the project.
Sources/AblyChat/DefaultMessages.swift (5)
1-11: LGTM with a minor suggestionThe imports, typealias, and struct definitions look good and serve their purpose well. However, I have one minor suggestion:
Consider capitalizing the
FromSerialtypealias name toFromSerialto follow Swift naming conventions for types.-private typealias FromSerial = String +private typealias FromSerial = String
12-32: LGTM with a suggestion for event handlingThe
DefaultMessagesclass structure and initialization look good. However, I have a suggestion regarding the channel event handling:Consider implementing an explicit
start()method instead of using an implicitTaskin the initializer. This approach would give more control to the caller and make the lifecycle of the event handling more clear. For example:public func start() async { await handleChannelEvents(roomId: roomID) }This way, the caller can decide when to start handling events, which might be beneficial in certain scenarios.
34-77: LGTM with a suggestion for error handlingThe
subscribemethod implementation looks good and follows the specified requirements. The use of weak self in closures is a good practice to prevent retain cycles.Consider adding explicit error handling for the case when
resolveSubscriptionStart()fails. You could wrap the call in a do-catch block and handle any potential errors. For example:do { let timeserial = try await resolveSubscriptionStart() // ... rest of the method } catch { throw MessagesError.failedToResolveSubscriptionStart(error) }This would provide more context if the subscription start resolution fails.
126-152: LGTM with suggestions for error handlingThe
handleChannelEventsmethod is well-implemented and follows the specified requirements. The use of weak self in closures is a good practice to prevent retain cycles.Consider improving the error handling to provide more context. Instead of throwing the error directly, you could wrap it in a custom error type that provides more information about where the error occurred. For example:
enum ChannelEventError: Error { case attachFailure(underlying: Error) case updateFailure(underlying: Error) } // In the error handling blocks: catch { throw ChannelEventError.attachFailure(underlying: error) } // And for the update event: catch { throw ChannelEventError.updateFailure(underlying: error) }This would provide more context about where the error occurred when it's caught higher up in the call stack.
154-170: LGTM with suggestions for error handlingThe
handleAttachmethod is well-implemented and follows the specified requirements. It correctly handles the case when the channel is attached and updates the subscription points appropriately.Similar to the previous suggestion, consider improving the error handling to provide more context. You could create a specific error type for attach-related errors:
enum AttachError: Error { case subscriptionStartFailure(underlying: Error) } // In the error handling block: catch { throw AttachError.subscriptionStartFailure(underlying: error) }This would provide more specific information about the nature of the error when it's caught and handled elsewhere in the code.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (7)
- Sources/AblyChat/ChatAPI.swift (1 hunks)
- Sources/AblyChat/DefaultMessages.swift (1 hunks)
- Sources/AblyChat/Dependencies.swift (1 hunks)
- Sources/AblyChat/Message.swift (2 hunks)
- Sources/AblyChat/Messages.swift (3 hunks)
- Sources/AblyChat/PaginatedResult.swift (2 hunks)
- Sources/AblyChat/Timeserial.swift (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- Sources/AblyChat/ChatAPI.swift
- Sources/AblyChat/Dependencies.swift
🧰 Additional context used
📓 Learnings (3)
Sources/AblyChat/DefaultMessages.swift (1)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:134-137 Timestamp: 2024-10-01T20:11:26.655Z Learning: In `RoomLifecycleManager`, capturing `self` as `[weak self]` in closures is acceptable because if `self` is deallocated, missing state changes is acceptable since there's no object to process them.Sources/AblyChat/Messages.swift (1)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/Messages.swift:104-106 Timestamp: 2024-10-02T23:37:00.308Z Learning: In `MessageSubscription`, `getPreviousMessages` should be non-optional.Sources/AblyChat/PaginatedResult.swift (3)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:64-66 Timestamp: 2024-10-02T23:40:28.836Z Learning: When handling closures passed to `paginatedResponse.next` in `PaginatedResultWrapper`, it is unnecessary to capture `paginatedResponse` weakly since it is provided by the method and not retained by `self`; therefore, there is no risk of a retain cycle.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:24-25 Timestamp: 2024-10-02T23:39:04.481Z Learning: The syntax `if let variable {` is valid in newer versions of Swift and should not be flagged as incorrect.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:29-29 Timestamp: 2024-10-02T23:38:51.440Z Learning: In Swift, the guard statement can use shorthand optional binding syntax like `guard let variable else { ... }` without needing to assign `variable = variable`.
🔇 Additional comments (21)
Sources/AblyChat/Timeserial.swift (4)
4-13: LGTM: Well-designed Timeserial protocolThe Timeserial protocol is well-structured with appropriate properties and comparison methods. The Sendable conformance is a good choice for thread safety.
16-27: LGTM: DefaultTimeserial struct implementationThe DefaultTimeserial struct correctly implements the Timeserial protocol. The private initializer suggests a controlled instance creation process, likely through the calculateTimeserial method.
77-90: LGTM: Concise comparison methodsThe before, after, and equal methods are implemented correctly and concisely using the timeserialCompare method. This approach maintains consistency with other SDKs.
1-96: LGTM: Well-structured and organized implementationThe overall structure of the file is clean, logical, and easy to follow. The use of internal access levels is appropriate for a library, and the file name accurately reflects its contents. Good job on maintaining a clear and organized codebase.
Sources/AblyChat/PaginatedResult.swift (4)
48-60: LGTM: Well-structured implementation of PaginatedResultWrapperThe
PaginatedResultWrapperclass is well-implemented. It correctly conforms to thePaginatedResultprotocol and encapsulates the necessary properties. The use offinalis a good choice for preventing unintended subclassing and potential performance improvements.
62-71: LGTM: Correct implementation of asynchronous 'next' propertyThe
nextproperty is well-implemented. It correctly useswithCheckedThrowingContinuationto handle the asynchronous nature of fetching the next page. The use ofARTHTTPPaginatedCallbackWrapperensures consistent error handling and response processing.
84-87: LGTM: Correct implementation of 'current' propertyThe
currentproperty is correctly implemented. Returningselfis the appropriate way to provide access to the current page, as thePaginatedResultWrapperinstance already represents the current page of results.
90-95: LGTM: Useful extension for ARTHTTPPaginatedResponseThe private extension on
ARTHTTPPaginatedResponseis a good addition. ThetoPaginatedResultmethod provides a clean and convenient way to convert anARTHTTPPaginatedResponseto aPaginatedResultWrapper. The private access level is appropriate for this internal implementation detail.Sources/AblyChat/Messages.swift (5)
9-9: Approved: channel property type updated to RealtimeChannelProtocolThe change from
ARTRealtimeChannelProtocoltoRealtimeChannelProtocolfor thechannelproperty type is a good move towards using a more generic protocol.Could you please provide more information about the
RealtimeChannelProtocol? Specifically:
- Is it a custom protocol or part of a library?
- Does it provide all the necessary functionality that
ARTRealtimeChannelProtocoldid?- Are there any implications for existing implementations of the
Messagesprotocol?
24-37: Approved with suggestions: QueryOptions struct updatesThe changes to the
QueryOptionsstruct, including the update of theendproperty toInt?and the addition of thetimeSerialproperty, align with the goal of using timeserials for representation. However, there are a few points to address:
- The TODO comment suggests that this is a temporary solution. Could you provide an estimated timeline for revisiting this issue?
- The
startproperty is still of typeDate?, whileendis nowInt?. This inconsistency might lead to confusion. Consider updatingstarttoInt?as well for consistency, or provide a clear explanation for the difference.- The comment for
timeSerialmentions it's used for the subscriber's subscription point. It might be helpful to add a brief explanation of how this is used in the codebase.To ensure that these changes are properly handled throughout the codebase, please run the following script to find usages of QueryOptions that might need updating:
#!/bin/bash # Find usages of QueryOptions rg --type swift 'QueryOptions' -C 2Review the results to ensure that all usages of
QueryOptionsare updated to handle the new property types correctly.Also applies to: 39-44
85-100: Approved: MessageSubscription struct updatesThe changes to the
MessageSubscriptionstruct, including the addition of thegetPreviousMessagesproperty and the updates to the initializers, improve the flexibility and consistency of the API. The use ofQueryOptionsinstead ofQueryOptionsWithoutDirectionis a good simplification.To ensure that these changes are properly implemented across the codebase, please run the following script to check for any remaining uses of
QueryOptionsWithoutDirectionor old-style initializations ofMessageSubscription:#!/bin/bash # Find any remaining uses of QueryOptionsWithoutDirection rg --type swift 'QueryOptionsWithoutDirection' # Find initializations of MessageSubscription rg --type swift 'MessageSubscription\(' -C 2Review the results to ensure that all usages of
MessageSubscriptionare updated to use the new initializer signature andQueryOptions.Also applies to: 107-108
107-108: Approved: getPreviousMessages method updatedThe update to the
getPreviousMessagesmethod, usingQueryOptionsand simplifying the method body, is a good improvement that aligns with the other changes in theMessageSubscriptionstruct.To ensure that this change is properly handled throughout the codebase, please run the following script to find calls to
getPreviousMessagesthat might need updating:#!/bin/bash # Find calls to getPreviousMessages rg --type swift 'getPreviousMessages\(' -C 2Review the results to ensure that all calls to
getPreviousMessagesare updated to useQueryOptionsinstead ofQueryOptionsWithoutDirection.
6-6: Approved: subscribe method updated to async throwsThe
subscribemethod has been updated to be asynchronous and throw errors, which is a good improvement for handling potential asynchronous operations and error cases during subscription.To ensure that this change is properly implemented across the codebase, please run the following script to check for any remaining synchronous
subscribemethod calls that need to be updated:Make sure to update any calls to this method to use
awaitand handle potential errors.Sources/AblyChat/DefaultMessages.swift (3)
79-86: LGTMThe
getandsendmethods are implemented correctly and follow the specified requirements. They appropriately delegate the work to thechatAPIobject, which keeps theDefaultMessagesclass focused on its responsibilities.
97-124: LGTMThe
getBeforeSubscriptionStartmethod is well-implemented and follows the specified requirements. It includes appropriate error handling for invalid subscription points and end times, and correctly sets up the query options as per the specifications.
172-230: LGTMThe
resolveSubscriptionStartandsubscribeAtChannelAttachmethods are well-implemented and follow the specified requirements. The error handling is appropriate and provides clear error messages. The use of continuations insubscribeAtChannelAttachis a good approach for handling the asynchronous nature of channel attachment.The implementation correctly handles different channel states and provides appropriate error messages for each case. The use of
withCheckedThrowingContinuationis a good choice for managing the asynchronous channel attachment process.Sources/AblyChat/Message.swift (5)
6-7: Clear and Informative DocumentationThe added comments provide a clear explanation of the
Messagestruct and its conformance toHashable, enhancing code readability and maintainability.
8-8: Correct Protocol ConformancesAdding
CodableandHashableconformances is appropriate for serialization and compatibility with SwiftUI components likeForEach.
10-13: Appropriate Use of Optional PropertiesChanging
clientIDandcreatedAtto optional types allows theMessagestruct to represent messages where these values may not be present, improving flexibility.
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17-24: Initializer Matches Updated PropertiesThe initializer correctly reflects the optional nature of
clientIDandcreatedAt, ensuring proper initialization ofMessageinstances.
27-34: Consistent Coding KeysThe
CodingKeysenum accurately maps the property names to their JSON counterparts, maintaining consistency between the model and its serialized form.
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- Sources/AblyChat/Timeserial.swift (1 hunks)
🔇 Additional comments (3)
Sources/AblyChat/Timeserial.swift (3)
3-12: LGTM: Well-designed Timeserial protocolThe Timeserial protocol is well-structured with appropriate properties and comparison methods. The use of the Sendable protocol is a good choice for ensuring thread safety.
14-25: LGTM: Well-implemented DefaultTimeserial structThe DefaultTimeserial struct correctly implements the Timeserial protocol. The use of a private initializer enhances encapsulation. Good job on addressing the previous comment about using a struct instead of a class.
75-88: LGTM: Well-implemented comparison methodsThe before, after, and equal methods are concisely and correctly implemented using the timeserialCompare method. This ensures consistent comparison across all methods.
umair-ably
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I've tried this branch without So yeah, no need for ably/ably-cocoa#1973 atm |
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Actionable comments posted: 19
🧹 Outside diff range and nitpick comments (15)
Sources/AblyChat/PaginatedResult.swift (4)
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3-13: Consider addressing the TODO comment for unwrappingThe TODO comment suggests reconsidering the need for unwrapping. To improve type safety and reduce the need for optional unwrapping, you might want to explore using a non-optional type or a more explicit error handling mechanism.
Consider alternatives such as:
- Using a
Resulttype to represent success/failure states.- Implementing a custom error type that includes a "no next page" case.
- Using a non-optional property with a sentinel value to indicate the absence of a next page.
Would you like me to propose a specific implementation for any of these alternatives?
15-46: Solid implementation with room for minor improvementThe
ARTHTTPPaginatedCallbackWrapperstruct effectively handles the callback result and error cases. The use ofCheckedContinuationis appropriate for bridging callback-based APIs to async/await.Consider enhancing error handling by creating a custom error type that encapsulates both
ARTErrorInfoandPaginatedResultError. This would provide a more unified error handling approach:enum PaginatedResultError: Error { case artError(ARTErrorInfo) case noErrorWithInvalidResponse case decodingError(Error) }Then, you can use this enum in the
handleResponsemethod:if let error { continuation.resume(throwing: PaginatedResultError.artError(ARTErrorInfo.create(from: error))) return } // ... (rest of the method) } catch { continuation.resume(throwing: PaginatedResultError.decodingError(error)) }This approach would provide more context about the error type to the caller.
48-88: Efficient implementation with room for optimizationThe
PaginatedResultWrapperclass effectively wraps theARTHTTPPaginatedResponseand provides a clean interface conforming toPaginatedResult. The use ofwithCheckedThrowingContinuationfornextandfirstproperties is appropriate.Consider optimizing the
currentproperty implementation. Since it always returnsself, it doesn't need to be asynchronous or throwing. You can simplify it as follows:internal var current: any PaginatedResult<T> { self }This change would improve performance by avoiding unnecessary asynchronous overhead when accessing the current page.
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1-95: Well-structured pagination system with room for minor improvementsThe implementation of the pagination system is well-designed and effectively bridges callback-based APIs to async/await. The code follows Swift best practices and is easy to understand.
To further improve the codebase, consider adding documentation comments (using
///) for thePaginatedResultprotocol andPaginatedResultWrapperclass. This would enhance code readability and make it easier for other developers to understand and use these types.For example:
/// A protocol representing a paginated result set. /// /// `PaginatedResult` provides a generic interface for accessing paginated data, /// including the current items, pagination status, and methods to fetch additional pages. public protocol PaginatedResult<T>: AnyObject, Sendable { // ... (existing code) } /// A concrete implementation of `PaginatedResult` that wraps an `ARTHTTPPaginatedResponse`. /// /// `PaginatedResultWrapper` provides access to paginated data and implements /// the necessary logic to fetch additional pages using the underlying `ARTHTTPPaginatedResponse`. internal final class PaginatedResultWrapper<T: Codable & Sendable>: PaginatedResult { // ... (existing code) }These documentation comments will be particularly helpful when generating API documentation or when using code completion in Xcode.
Example/AblyChatExample/MessageDemoView.swift (1)
1-8: Consider using environment variables for sensitive informationThe
clientIdandapiKeyare currently set as empty strings. For better security and flexibility, consider loading these values from environment variables or a secure configuration file, especially when moving beyond this example code.Sources/AblyChat/ChatAPI.swift (5)
3-13: LGTM with a minor suggestionThe
ChatAPIclass is well-structured with appropriate access levels and protocol conformance. The use offinalprevents subclassing, which is good for maintaining control over the API.However, consider making the
apiProtocolVersionmore flexible:private let apiProtocolVersion: Int public init(realtime: RealtimeClient, apiProtocolVersion: Int = 3) { self.realtime = realtime self.apiProtocolVersion = apiProtocolVersion }This allows for easier version updates in the future without changing the class implementation.
26-68: LGTM with a suggestion for date conversion clarityThe
sendMessagefunction correctly implements the CHA-M3 requirements, including proper validation of metadata and headers. The error handling for invalid keys is well implemented.However, the date conversion from milliseconds to seconds could be more explicit:
let createdAtInSeconds = TimeInterval(response.createdAt) / 1000This makes it clear that we're working with milliseconds without relying on the
integerLiteralinitializer.Also, consider adding a comment explaining why
clientIDcan be an empty string:clientID: realtime.clientId ?? "", // Empty string is allowed as per Ably's specification
75-102: LGTM with a note on the TODOThe
makeAuthorizedRequestfunction is well-implemented, using the continuation pattern correctly and handling errors comprehensively.Regarding the TODO comment:
// TODO: Improve as part of occupancy/presenceIt's good practice to include more context in TODO comments. Consider adding a brief explanation of what improvements are needed and why they're related to occupancy/presence. This will help future developers (including yourself) understand the intent behind the comment.
For example:
// TODO: Refactor error handling and response processing when implementing occupancy/presence features to ensure consistent behavior across different request types.
104-118: LGTM with a suggestion for error handling consistencyThe
makeAuthorizedPaginatedRequestfunction is well-implemented, using the continuation pattern andARTHTTPPaginatedCallbackWrapperappropriately for handling paginated results.However, the error handling in this function is minimal compared to
makeAuthorizedRequest. Consider adding more specific error handling similar tomakeAuthorizedRequestfor consistency:if let error { continuation.resume(throwing: ARTErrorInfo.create(from: error)) return } guard let paginatedResponse else { continuation.resume(throwing: ChatError.noPaginatedResponse) return } ARTHTTPPaginatedCallbackWrapper<Response>(callbackResult: (paginatedResponse, nil)).handleResponse(continuation: continuation)This would provide more detailed error information and ensure consistent error handling across both request functions.
125-139: LGTM with suggestions for error handling improvementsThe
DictionaryDecoderstruct is well-implemented and serves its purpose effectively. However, there are a few improvements that could be made to enhance error handling and provide more context in case of failures:
- Consider wrapping the JSONSerialization and decoding errors in a custom error type to provide more context:
enum DictionaryDecoderError: Error { case serializationFailed(Error) case decodingFailed(Error) } internal func decode<T: Decodable>(_: T.Type, from dictionary: NSDictionary) throws -> T { do { let data = try JSONSerialization.data(withJSONObject: dictionary) do { return try decoder.decode(T.self, from: data) } catch { throw DictionaryDecoderError.decodingFailed(error) } } catch { throw DictionaryDecoderError.serializationFailed(error) } }
Add similar error handling to the array decoding method.
Consider adding a method to decode from
[String: Any]as well, which is a more common Swift dictionary type:internal func decode<T: Decodable>(_: T.Type, from dictionary: [String: Any]) throws -> T { // Implementation similar to NSDictionary method }These changes will make the struct more robust and easier to use in different contexts.
Sources/AblyChat/DefaultMessages.swift (1)
80-91: TODO: ImplementsubscribeToDiscontinuitiesmethod.The
subscribeToDiscontinuitiesmethod is currently not implemented and throws a fatal error. As per the TODO comment, this needs to be implemented to allow users to subscribe to discontinuity events. Consider creating a GitHub issue to track this task if it doesn't already exist.Would you like me to create a GitHub issue for implementing the
subscribeToDiscontinuitiesmethod?Sources/AblyChat/Rooms.swift (1)
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17-17: Addasyncto thegetmethod implementation to match the protocolThe
get(roomID:options:)method inDefaultRoomsis missing theasynckeyword, whereas theRoomsprotocol defines it as anasyncfunction. This mismatch could lead to compiler errors or unexpected behavior.Apply this diff to update the method signature:
-internal func get(roomID: String, options: RoomOptions) throws -> any Room { +internal func get(roomID: String, options: RoomOptions) async throws -> any Room {Sources/AblyChat/Room.swift (1)
55-55: Consider marking_messagesasnonisolatedSince
_messagesis accessed from anonisolatedcontext in themessagesproperty, it would be appropriate to declare it asnonisolatedto clarify the concurrency context and ensure thread safety. Update the declaration as follows:-private let _messages: any Messages +private nonisolated let _messages: any MessagesSources/AblyChat/Messages.swift (2)
24-24: Reminder: Implement Date Conversion forstartandendParametersThe TODO comment indicates that
startandendshould be properly converted betweenDateand timeserialInt. Addressing this will ensure accurate API requests and data consistency.Would you like assistance in implementing the date conversion, or should we open a GitHub issue to track this task?
47-75: Ensure Proper Formatting of Date and Timeserial Parameters intoDictionary()When converting
DateandIntparameters to strings in thetoDictionary()method, it's important to format them correctly for API consumption. For instance:
- Convert
Dateobjects to timestamps (milliseconds since epoch) or ISO 8601 strings.- Ensure that timeserial integers are accurately represented as strings without loss of precision.
If you need assistance with the formatting, I'm happy to help implement the necessary conversions.
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📒 Files selected for processing (30)
- AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved (1 hunks)
- Example/AblyChatExample.xcodeproj/project.pbxproj (1 hunks)
- Example/AblyChatExample/AblyChatExampleApp.swift (1 hunks)
- Example/AblyChatExample/ContentView.swift (0 hunks)
- Example/AblyChatExample/MessageDemoView.swift (1 hunks)
- Example/AblyChatExample/Mocks/MockRealtime.swift (3 hunks)
- Package.resolved (1 hunks)
- Package.swift (2 hunks)
- [email protected] (1 hunks)
- Sources/AblyChat/ChatAPI.swift (1 hunks)
- Sources/AblyChat/DefaultMessages.swift (1 hunks)
- Sources/AblyChat/Dependencies.swift (1 hunks)
- Sources/AblyChat/EmitsDiscontinuities.swift (1 hunks)
- Sources/AblyChat/Events.swift (1 hunks)
- Sources/AblyChat/Headers.swift (1 hunks)
- Sources/AblyChat/Message.swift (2 hunks)
- Sources/AblyChat/Messages.swift (3 hunks)
- Sources/AblyChat/Metadata.swift (1 hunks)
- Sources/AblyChat/Occupancy.swift (1 hunks)
- Sources/AblyChat/PaginatedResult.swift (2 hunks)
- Sources/AblyChat/Room.swift (2 hunks)
- Sources/AblyChat/Rooms.swift (1 hunks)
- Sources/AblyChat/Timeserial.swift (1 hunks)
- Sources/AblyChat/Version.swift (1 hunks)
- Tests/AblyChatTests/DefaultRoomTests.swift (4 hunks)
- Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
- Tests/AblyChatTests/MessageSubscriptionTests.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockChannels.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRealtime.swift (2 hunks)
- Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift (3 hunks)
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- Example/AblyChatExample/ContentView.swift
✅ Files skipped from review due to trivial changes (1)
- Sources/AblyChat/Events.swift
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- AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved
- Example/AblyChatExample.xcodeproj/project.pbxproj
- Example/AblyChatExample/AblyChatExampleApp.swift
- Package.resolved
- Package.swift
- [email protected]
- Sources/AblyChat/Dependencies.swift
- Sources/AblyChat/EmitsDiscontinuities.swift
- Sources/AblyChat/Headers.swift
- Sources/AblyChat/Message.swift
- Sources/AblyChat/Metadata.swift
- Sources/AblyChat/Occupancy.swift
- Sources/AblyChat/Version.swift
- Tests/AblyChatTests/DefaultRoomTests.swift
- Tests/AblyChatTests/DefaultRoomsTests.swift
- Tests/AblyChatTests/MessageSubscriptionTests.swift
- Tests/AblyChatTests/Mocks/MockChannels.swift
- Tests/AblyChatTests/Mocks/MockRealtime.swift
- Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift
🧰 Additional context used
📓 Learnings (6)
Example/AblyChatExample/MessageDemoView.swift (3)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:131-145 Timestamp: 2024-10-02T23:24:01.894Z Learning: The example code in `Example/AblyChatExample/MessageDemoView.swift` is temporary and will soon be replaced; issues in this file can be deprioritized in code reviews.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:122-123 Timestamp: 2024-10-02T23:28:40.105Z Learning: In `Example/AblyChatExample/MessageDemoView.swift`, UI updates within `startChat` are acceptable because `startChat` is called on the main thread.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:49-54 Timestamp: 2024-10-02T23:26:46.896Z Learning: The `clientOptions` for `Realtime` and `DefaultChatClient` are different: one is for Realtime, and one is for log handling.Example/AblyChatExample/Mocks/MockRealtime.swift (4)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#35 File: Example/AblyChatExample/Mocks/MockRealtime.swift:16-32 Timestamp: 2024-09-02T16:30:26.840Z Learning: When reviewing code, do not ask lawrence-forooghian about "not yet implemented" `fatalError` calls.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#35 File: Example/AblyChatExample/Mocks/MockRealtime.swift:34-174 Timestamp: 2024-09-02T16:30:41.278Z Learning: When reviewing code, do not ask lawrence-forooghian about "not yet implemented" `fatalError` calls.Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/Mocks/MockClients.swift:24-44 Timestamp: 2024-09-22T21:36:09.485Z Learning: In mock implementations, it's acceptable to leave the `release` method unimplemented during early development.Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/Mocks/MockClients.swift:367-369 Timestamp: 2024-09-22T21:19:09.956Z Learning: In mock implementations, it's acceptable to leave `subscribeToDiscontinuities` unimplemented during early development.Sources/AblyChat/ChatAPI.swift (1)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/ChatAPI.swift:104-118 Timestamp: 2024-10-02T23:22:40.173Z Learning: In the `makeAuthorizedPaginatedRequest` function, nested `do-catch` blocks are acceptable for maintaining lower-level error propagation without additional error mapping.Sources/AblyChat/DefaultMessages.swift (1)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:134-137 Timestamp: 2024-10-01T20:11:26.655Z Learning: In `RoomLifecycleManager`, capturing `self` as `[weak self]` in closures is acceptable because if `self` is deallocated, missing state changes is acceptable since there's no object to process them.Sources/AblyChat/PaginatedResult.swift (3)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:64-66 Timestamp: 2024-10-02T23:40:28.836Z Learning: When handling closures passed to `paginatedResponse.next` in `PaginatedResultWrapper`, it is unnecessary to capture `paginatedResponse` weakly since it is provided by the method and not retained by `self`; therefore, there is no risk of a retain cycle.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:24-25 Timestamp: 2024-10-02T23:39:04.481Z Learning: The syntax `if let variable {` is valid in newer versions of Swift and should not be flagged as incorrect.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:29-29 Timestamp: 2024-10-02T23:38:51.440Z Learning: In Swift, the guard statement can use shorthand optional binding syntax like `guard let variable else { ... }` without needing to assign `variable = variable`.Sources/AblyChat/Room.swift (1)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/Room.swift:50-50 Timestamp: 2024-10-02T23:39:50.226Z Learning: In the Cocoa SDK, `clientID` can be `nil`, and using an empty string as `clientID` works fine.
🔇 Additional comments (13)
Sources/AblyChat/Timeserial.swift (2)
3-12: LGTM: Timeserial protocol definition is well-structuredThe Timeserial protocol is well-defined with appropriate properties and methods for timeserial comparison. The conformance to Sendable is a good practice for concurrent environments.
14-25: LGTM: DefaultTimeserial struct is well-implementedThe DefaultTimeserial struct correctly implements the Timeserial protocol. The use of a private initializer is good for encapsulation and control over object creation.
Sources/AblyChat/PaginatedResult.swift (1)
90-95: Clean and purposeful extensionThe private extension on
ARTHTTPPaginatedResponseprovides a concise and useful method for converting toPaginatedResultWrapper. This approach enhances code readability and maintainability.Example/AblyChatExample/MessageDemoView.swift (1)
1-150: Overall assessment of MessageDemoView.swiftThe implementation provides a functional chat interface using SwiftUI and Ably. While it serves its purpose as example code, there are several areas where it could be improved:
- Security: Move sensitive information (clientId, apiKey) to a secure configuration.
- User Experience: Improve message alignment for better visual distinction between senders.
- Code Organization: Extract configuration and utility functions to separate files or extensions.
- Error Handling: Implement more robust error handling, especially in the
startChat()function.- Concurrency: Address potential race conditions in the
sendMessage()function.These suggestions can serve as valuable considerations when implementing the final version of the chat interface.
Sources/AblyChat/DefaultMessages.swift (3)
1-10: LGTM! Well-structured file header and imports.The file structure is clean, with appropriate imports and well-documented private types. The
FromSerialtypealias andMessageSubscriptionWrapperstruct are clearly explained and serve specific purposes in the implementation.
97-124: LGTM! Well-implementedgetBeforeSubscriptionStartmethod.The method correctly handles querying message history before a subscription point, including proper error handling for invalid query parameters. The implementation aligns well with the specified requirements (CHA-M5j, CHA-M5f, CHA-M5g).
1-235: Overall, well-implemented messaging system with room for minor improvements.The
DefaultMessagesclass provides a comprehensive implementation of a messaging system using the Ably SDK. It adheres well to the specified requirements and demonstrates good attention to detail. The suggested improvements, such as enhancing error handling, improving logging, and expanding the error enum, will further increase the robustness and maintainability of the code. Great job on the implementation!Sources/AblyChat/Room.swift (1)
39-51:⚠️ Potential issueEnsure
ChatAPIandDefaultMessagesconform toSendablefor concurrency safetyAccessing
chatAPIand_messagesfromnonisolatedcontexts within theDefaultRoomactor requires that these types conform toSendableto guarantee thread safety in Swift's concurrency model. Please verify thatChatAPI,Messages(and specificallyDefaultMessages), conform toSendableto avoid potential concurrency issues.You can run the following script to verify the conformance:
Sources/AblyChat/Messages.swift (4)
6-6: Approved: AsynchronoussubscribeMethod Enhances ResponsivenessChanging the
subscribemethod to beasync throwsis appropriate. This update allows for asynchronous operations and better error handling, improving the responsiveness of the API.
9-9: Approved: UpdatedchannelProperty Improves ConsistencyUpdating the
channelproperty to useRealtimeChannelProtocolensures consistency with the latest Ably SDK protocols.
85-94: Approved: Enhanced Initializers forMessageSubscriptionIncrease FlexibilityThe updated initializers with the
getPreviousMessagesclosure enhance the flexibility ofMessageSubscription, allowing for customized retrieval of previous messages.Also applies to: 97-100
107-108: Approved: Proper Delegation ingetPreviousMessagesMethodThe
getPreviousMessagesmethod correctly delegates the execution to the provided closure, maintaining clean code architecture and separation of concerns.Example/AblyChatExample/Mocks/MockRealtime.swift (1)
45-49:⚠️ Potential issueVerify
ARTChannelPropertiesConformance toSendableSince
Channelis marked asSendable, all of its stored properties, includingARTChannelProperties, should also conform toSendableto ensure concurrency safety. IfARTChannelPropertiesdoes not conform toSendable, this may lead to concurrency issues when accessing its properties across different threads.To confirm if
ARTChannelPropertiesconforms toSendable, please run the following script:
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Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (16)
Sources/AblyChat/Message.swift (4)
37-41: LGTM with suggestion: Implement isBefore method with potential optimizationThe
isBeforemethod correctly implements the comparison logic based on timeserials. However, consider optimizing the method by calculatingselfTimeserialonce and reusing it:public func isBefore(_ otherMessage: Message) throws -> Bool { + let selfTimeserial = try DefaultTimeserial.calculateTimeserial(from: timeserial) let otherMessageTimeserial = try DefaultTimeserial.calculateTimeserial(from: otherMessage.timeserial) - return try DefaultTimeserial.calculateTimeserial(from: timeserial).before(otherMessageTimeserial) + return selfTimeserial.before(otherMessageTimeserial) }This optimization can improve performance by avoiding redundant calculations.
43-47: LGTM with suggestion: Implement isAfter method with potential optimizationThe
isAftermethod correctly implements the comparison logic based on timeserials. Similar to theisBeforemethod, consider optimizing by calculatingselfTimeserialonce:public func isAfter(_ otherMessage: Message) throws -> Bool { + let selfTimeserial = try DefaultTimeserial.calculateTimeserial(from: timeserial) let otherMessageTimeserial = try DefaultTimeserial.calculateTimeserial(from: otherMessage.timeserial) - return try DefaultTimeserial.calculateTimeserial(from: timeserial).after(otherMessageTimeserial) + return selfTimeserial.after(otherMessageTimeserial) }This optimization aligns with the suggestion for the
isBeforemethod and can improve overall performance.
49-53: LGTM with suggestion: Implement isEqual method with potential optimizationThe
isEqualmethod correctly implements the comparison logic based on timeserials. To maintain consistency with the previous suggestions, consider optimizing by calculatingselfTimeserialonce:public func isEqual(_ otherMessage: Message) throws -> Bool { + let selfTimeserial = try DefaultTimeserial.calculateTimeserial(from: timeserial) let otherMessageTimeserial = try DefaultTimeserial.calculateTimeserial(from: otherMessage.timeserial) - return try DefaultTimeserial.calculateTimeserial(from: timeserial).equal(otherMessageTimeserial) + return selfTimeserial.equal(otherMessageTimeserial) }This optimization completes the set of optimized comparison methods, ensuring consistent performance improvements across all three methods.
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6-53: Consider conforming to Comparable and Equatable protocolsThe
Messagestruct now implements comparison methods (isBefore,isAfter,isEqual) and conforms toHashable. To further enhance its functionality and provide a more idiomatic Swift interface, consider conforming to theComparableandEquatableprotocols:public struct Message: Sendable, Codable, Hashable, Comparable, Equatable { // ... existing properties and methods ... public static func < (lhs: Message, rhs: Message) throws -> Bool { return try lhs.isBefore(rhs) } public static func == (lhs: Message, rhs: Message) throws -> Bool { return try lhs.isEqual(rhs) } }This change would allow for more natural sorting and comparison operations using standard Swift operators, improving the overall usability of the
Messagestruct in various contexts.Sources/AblyChat/PaginatedResult.swift (3)
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10-10: Address the TODO comment regarding unwrappingThe TODO comment suggests a potential issue with unwrapping that needs to be addressed. Consider creating a GitHub issue to track this task and ensure it's not overlooked.
Would you like me to create a GitHub issue to track this TODO item?
16-46: Well-structured error handling and response decodingThe
ARTHTTPPaginatedCallbackWrapperstruct is well-designed for handling paginated responses and errors. The error handling logic is comprehensive and covers various scenarios.Consider adding a more specific error case for decoding failures to provide better context when debugging:
internal enum PaginatedResultError: Error { case noErrorWithInvalidResponse case decodingError(Error) }Then, update the catch block in
handleResponse:} catch { continuation.resume(throwing: PaginatedResultError.decodingError(error)) }This change would provide more context about the specific error that occurred during decoding.
49-88: Solid implementation of PaginatedResult protocolThe
PaginatedResultWrapper<T>class provides a robust implementation of thePaginatedResultprotocol. The use ofwithCheckedThrowingContinuationfor asynchronous operations is appropriate.For consistency, consider using the same pattern for the
currentproperty as used innextandfirst. This would make the code more uniform and easier to maintain:internal var current: any PaginatedResult<T> { get async throws { try await withCheckedThrowingContinuation { continuation in continuation.resume(returning: self) } } }This change would make all properties consistent in their asynchronous nature, even if
currentdoesn't perform any actual asynchronous operations.Sources/AblyChat/Messages.swift (5)
3-9: Approved: Protocol updates enhance concurrency and type safetyThe changes to the
Messagesprotocol are well-considered:
- The
@MainActorannotation addresses a Swift 6.0 error and allows for mutations on listeners.- The
subscribemethod is now asynchronous and throwing, aligning with modern Swift concurrency practices.- The
channelproperty type change toRealtimeChannelProtocolsuggests a move towards a custom abstraction.These updates improve type safety and concurrency handling in the protocol.
Consider updating the comment to mention the async nature of the
subscribemethod:// MainActor is required to resolve a Swift 6.0 error "Incorrect actor executor assumption", // whilst also allowing for mutations on listeners within the concrete class. // The async subscribe method ensures proper concurrency handling.
47-77: Approved: Well-implemented toDictionary() method with minor optimization opportunityThe
toDictionary()method is a well-implemented addition to theQueryOptionsstruct:
- It correctly handles all optional properties.
- The conversion of
ResultOrderenum to string representation is appropriate.- The method provides a clean way to convert
QueryOptionsto a format suitable for API requests.Consider a minor optimization to reduce dictionary mutations:
public func toDictionary() -> [String: String] { var dict: [String: String] = [:] dict.reserveCapacity(5) // Pre-allocate capacity for potential items if let start { dict["start"] = "\(start)" } if let end { dict["end"] = "\(end)" } if let limit { dict["limit"] = "\(limit)" } if let orderBy { dict["direction"] = orderBy == .oldestFirst ? "forwards" : "backwards" } if let fromSerial { dict["fromSerial"] = fromSerial } return dict }This optimization pre-allocates dictionary capacity and uses a more concise syntax for the
orderByconversion.
85-94: Approved: Enhanced MessageSubscription with flexible message retrievalThe changes to the
MessageSubscriptionstruct improve its functionality and flexibility:
- The addition of the
getPreviousMessagesproperty allows for customizable message retrieval.- The new initializer provides a clean way to inject the
getPreviousMessagesfunctionality.These changes enhance the struct's capabilities and align with dependency injection principles.
Consider adding documentation for the
getPreviousMessagesproperty to clarify its purpose and usage:/// A closure that retrieves previous messages based on the provided query options. /// This allows for customizable message retrieval strategies. private let getPreviousMessages: @Sendable (QueryOptions) async throws -> any PaginatedResult<Message>
107-109: Approved: Simplified getPreviousMessages method with suggestionThe changes to the
getPreviousMessagesmethod improve consistency and reduce code duplication:
- Using
QueryOptionsinstead ofQueryOptionsWithoutDirectionaligns with earlier changes in the struct.- The simplified implementation directly calls the
getPreviousMessagesproperty, reducing code duplication.Consider adding error handling to provide more context if an error occurs:
public func getPreviousMessages(params: QueryOptions) async throws -> any PaginatedResult<Message> { do { return try await getPreviousMessages(params) } catch { throw MessageSubscriptionError.getPreviousMessagesFailed(underlyingError: error) } } enum MessageSubscriptionError: Error { case getPreviousMessagesFailed(underlyingError: Error) }This change would provide more context about where the error occurred, which can be helpful for debugging and error reporting.
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1-128: Overall: Significant improvements with minor refinements neededThe changes to this file represent a substantial improvement in functionality, testability, and type safety:
- The
Messagesprotocol now leverages Swift's concurrency features and provides better actor isolation.- The
QueryOptionsstruct has been enhanced, although there's still work to be done on date representation.- The
MessageSubscriptionstruct now offers more flexible message retrieval and improved testability.- The new
toDictionary()method inQueryOptionsprovides a clean way to convert options for API requests.These changes collectively enhance the SDK's capabilities and align it with modern Swift practices.
To further improve the codebase:
- Resolve the TODO regarding date representation in
QueryOptions.- Ensure consistent error handling throughout the file.
- Consider creating a separate file for
QueryOptionsif it grows in complexity.- Review the usage of
RealtimeChannelProtocolto ensure it meets all requirements previously covered byARTRealtimeChannelProtocol.These refinements will help maintain code quality and improve long-term maintainability.
Example/AblyChatExample/Mocks/MockRealtime.swift (2)
46-46: Consider initializing properties in the initializer.The empty initializer
init()has been added to theChannelclass. While this is acceptable for a mock implementation, consider using this initializer to set up any required properties or perform any necessary initialization, even if it's just setting default values. This can help ensure that the mock object is in a consistent state when created.
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4-231: Overall structure looks good, consider next steps for implementation.The additions to the
MockRealtimeclass and its nested classes are consistent with the purpose of this mock implementation. Here are some suggestions for next steps:
- Prioritize implementing methods that are crucial for your current testing needs.
- Consider adding TODO comments for methods that will need implementation in the future.
- As mentioned in a previous comment, address the concurrency concerns with
ARTRealtimeChannelOptionswhen you start implementing the methods.- When you begin implementing methods, consider adding basic logging to help with debugging during tests.
Remember to update the comment at the top of the file if the purpose or scope of this mock implementation changes.
Sources/AblyChat/Rooms.swift (2)
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35-49: Missingasyncingetmethod implementationThe
getmethod in theRoomsprotocol is declared asasync throws, but the implementation inDefaultRoomsis missing theasynckeyword. This mismatch can lead to compilation errors and violates protocol conformance.Apply this diff to fix the issue:
- internal func get(roomID: String, options: RoomOptions) throws -> any Room { + internal func get(roomID: String, options: RoomOptions) async throws -> any Room {
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49-51: Implement thereleasemethod to manage room lifecycleThe
releasemethod currently containsfatalError("Not yet implemented"). Implementing this method is crucial for proper resource management and to prevent runtime crashes when the method is called.Would you like assistance in drafting an implementation for the
releasemethod or opening a GitHub issue to track this task?
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Review profile: CHILL
📒 Files selected for processing (30)
- AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved (1 hunks)
- Example/AblyChatExample.xcodeproj/project.pbxproj (1 hunks)
- Example/AblyChatExample/AblyChatExampleApp.swift (1 hunks)
- Example/AblyChatExample/ContentView.swift (0 hunks)
- Example/AblyChatExample/MessageDemoView.swift (1 hunks)
- Example/AblyChatExample/Mocks/MockRealtime.swift (3 hunks)
- Package.resolved (1 hunks)
- Package.swift (2 hunks)
- [email protected] (1 hunks)
- Sources/AblyChat/ChatAPI.swift (1 hunks)
- Sources/AblyChat/DefaultMessages.swift (1 hunks)
- Sources/AblyChat/Dependencies.swift (1 hunks)
- Sources/AblyChat/EmitsDiscontinuities.swift (1 hunks)
- Sources/AblyChat/Events.swift (1 hunks)
- Sources/AblyChat/Headers.swift (1 hunks)
- Sources/AblyChat/Message.swift (2 hunks)
- Sources/AblyChat/Messages.swift (3 hunks)
- Sources/AblyChat/Metadata.swift (1 hunks)
- Sources/AblyChat/Occupancy.swift (1 hunks)
- Sources/AblyChat/PaginatedResult.swift (2 hunks)
- Sources/AblyChat/Room.swift (2 hunks)
- Sources/AblyChat/Rooms.swift (1 hunks)
- Sources/AblyChat/Timeserial.swift (1 hunks)
- Sources/AblyChat/Version.swift (1 hunks)
- Tests/AblyChatTests/DefaultRoomTests.swift (4 hunks)
- Tests/AblyChatTests/DefaultRoomsTests.swift (3 hunks)
- Tests/AblyChatTests/MessageSubscriptionTests.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockChannels.swift (1 hunks)
- Tests/AblyChatTests/Mocks/MockRealtime.swift (2 hunks)
- Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift (2 hunks)
💤 Files with no reviewable changes (1)
- Example/AblyChatExample/ContentView.swift
🚧 Files skipped from review as they are similar to previous changes (22)
- AblyChat.xcworkspace/xcshareddata/swiftpm/Package.resolved
- Example/AblyChatExample.xcodeproj/project.pbxproj
- Example/AblyChatExample/AblyChatExampleApp.swift
- Package.resolved
- Package.swift
- [email protected]
- Sources/AblyChat/ChatAPI.swift
- Sources/AblyChat/Dependencies.swift
- Sources/AblyChat/EmitsDiscontinuities.swift
- Sources/AblyChat/Events.swift
- Sources/AblyChat/Headers.swift
- Sources/AblyChat/Metadata.swift
- Sources/AblyChat/Occupancy.swift
- Sources/AblyChat/Room.swift
- Sources/AblyChat/Timeserial.swift
- Sources/AblyChat/Version.swift
- Tests/AblyChatTests/DefaultRoomTests.swift
- Tests/AblyChatTests/DefaultRoomsTests.swift
- Tests/AblyChatTests/MessageSubscriptionTests.swift
- Tests/AblyChatTests/Mocks/MockChannels.swift
- Tests/AblyChatTests/Mocks/MockRealtime.swift
- Tests/AblyChatTests/Mocks/MockRealtimeChannel.swift
🧰 Additional context used
📓 Learnings (4)
Example/AblyChatExample/MessageDemoView.swift (3)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:131-145 Timestamp: 2024-10-02T23:24:01.894Z Learning: The example code in `Example/AblyChatExample/MessageDemoView.swift` is temporary and will soon be replaced; issues in this file can be deprioritized in code reviews.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:122-123 Timestamp: 2024-10-02T23:28:40.105Z Learning: In `Example/AblyChatExample/MessageDemoView.swift`, UI updates within `startChat` are acceptable because `startChat` is called on the main thread.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Example/AblyChatExample/MessageDemoView.swift:49-54 Timestamp: 2024-10-02T23:26:46.896Z Learning: The `clientOptions` for `Realtime` and `DefaultChatClient` are different: one is for Realtime, and one is for log handling.Example/AblyChatExample/Mocks/MockRealtime.swift (4)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#35 File: Example/AblyChatExample/Mocks/MockRealtime.swift:16-32 Timestamp: 2024-09-02T16:30:26.840Z Learning: When reviewing code, do not ask lawrence-forooghian about "not yet implemented" `fatalError` calls.Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#35 File: Example/AblyChatExample/Mocks/MockRealtime.swift:34-174 Timestamp: 2024-09-02T16:30:41.278Z Learning: When reviewing code, do not ask lawrence-forooghian about "not yet implemented" `fatalError` calls.Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/Mocks/MockClients.swift:24-44 Timestamp: 2024-09-22T21:36:09.485Z Learning: In mock implementations, it's acceptable to leave the `release` method unimplemented during early development.Learnt from: maratal PR: ably-labs/ably-chat-swift#34 File: Example/AblyChatExample/Mocks/MockClients.swift:367-369 Timestamp: 2024-09-22T21:19:09.956Z Learning: In mock implementations, it's acceptable to leave `subscribeToDiscontinuities` unimplemented during early development.Sources/AblyChat/DefaultMessages.swift (1)
Learnt from: lawrence-forooghian PR: ably-labs/ably-chat-swift#67 File: Sources/AblyChat/RoomLifecycleManager.swift:134-137 Timestamp: 2024-10-01T20:11:26.655Z Learning: In `RoomLifecycleManager`, capturing `self` as `[weak self]` in closures is acceptable because if `self` is deallocated, missing state changes is acceptable since there's no object to process them.Sources/AblyChat/PaginatedResult.swift (3)
Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:64-66 Timestamp: 2024-10-02T23:40:28.836Z Learning: When handling closures passed to `paginatedResponse.next` in `PaginatedResultWrapper`, it is unnecessary to capture `paginatedResponse` weakly since it is provided by the method and not retained by `self`; therefore, there is no risk of a retain cycle.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:24-25 Timestamp: 2024-10-02T23:39:04.481Z Learning: The syntax `if let variable {` is valid in newer versions of Swift and should not be flagged as incorrect.Learnt from: umair-ably PR: ably-labs/ably-chat-swift#45 File: Sources/AblyChat/PaginatedResult.swift:29-29 Timestamp: 2024-10-02T23:38:51.440Z Learning: In Swift, the guard statement can use shorthand optional binding syntax like `guard let variable else { ... }` without needing to assign `variable = variable`.
🔇 Additional comments (15)
Sources/AblyChat/Message.swift (3)
6-15: LGTM: Enhanced struct conformance and property optionalityThe changes to the
Messagestruct, including conformance toCodableandHashable, and makingclientIDandcreatedAtoptional, align well with the PR objectives. These modifications improve the struct's flexibility and compatibility with SwiftUI and serialization processes.
Line range hint
17-26: LGTM: Initializer updated to match property changesThe initializer has been correctly updated to accept optional
clientIDandcreatedAtparameters, maintaining consistency with the property changes. This modification enhances the flexibility of theMessagestruct initialization.
27-35: LGTM: CodingKeys enum added with correct mappingsThe addition of the
CodingKeysenum ensures proper JSON key mapping for theMessagestruct. The previously reported issue withmetadataandheadersmapping has been correctly addressed. This change enhances the struct's serialization capabilities.Sources/AblyChat/PaginatedResult.swift (1)
90-95: Clean extension for type conversionThe private extension on
ARTHTTPPaginatedResponseprovides a clean and efficient way to convertARTHTTPPaginatedResponsetoPaginatedResultWrapper. This approach enhances code readability and maintainability by encapsulating the conversion logic.Sources/AblyChat/Messages.swift (2)
97-100: Approved: Improved testability for MessageSubscriptionThe changes to the testing initializer enhance the testability of the
MessageSubscriptionstruct:
- The addition of the
mockGetPreviousMessagesparameter allows for easy injection of mock behavior.- Setting the
getPreviousMessagesproperty with the provided mock ensures consistent behavior during testing.These changes facilitate more comprehensive and flexible unit testing of the
MessageSubscriptionstruct.
24-45:⚠️ Potential issueAddress type inconsistency and improve documentation
The changes to the
QueryOptionsstruct introduce some inconsistencies and potential issues:
- The
startproperty remains asDate?whileendis changed toInt?. This inconsistency could lead to confusion and potential errors.- The TODO comment acknowledges the need to revisit the date representation.
- The new
fromSerialproperty lacks documentation explaining its purpose and usage.To resolve these issues:
- Implement the TODO by converting both
startandendto use a consistent type (preferablyDate?).- If
Int?is necessary for compatibility reasons, consider creating a custom type that encapsulates the conversion logic.- Add documentation for the
fromSerialproperty explaining its purpose and when it should be set.Example implementation:
public struct QueryOptions: Sendable { // ... other properties ... /// The start time for the query range. public var start: Date? /// The end time for the query range. public var end: Date? /// Internal property used to specify the subscriber's subscription point. /// This is used in the fromSerial query parameter. internal var fromSerial: String? // ... rest of the implementation ... }To ensure that the
fromSerialproperty is used correctly throughout the codebase, run the following script:✅ Verification successful
Address Type Inconsistency and Enhance Documentation
The changes to the
QueryOptionsstruct introduce some inconsistencies and areas that require clarification:
- The
startproperty is of typeDate?, while theendproperty is of typeInt?. This inconsistency may lead to confusion and potential errors.- The TODO comment acknowledges the need to revisit the date representation for proper conversion between
IntandDate.- The new
fromSerialproperty is used in a limited scope and lacks documentation explaining its purpose and usage.Recommendations:
Implement the TODO: Convert both
startandendproperties to use a consistent type, preferablyDate?, to maintain uniformity and reduce potential errors.public struct QueryOptions: Sendable { /// The start time for the query range. public var start: Date? /// The end time for the query range. public var end: Date? // ... other properties ... }Document
fromSerial: Add clear documentation for thefromSerialproperty to explain its role and usage within theQueryOptionsstruct./// The subscriber's subscription point, specified internally in the fromSerial query parameter. internal var fromSerial: String?🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Find usage of fromSerial property rg "fromSerial" --type swiftLength of output: 675
Example/AblyChatExample/Mocks/MockRealtime.swift (1)
44-44: LGTM: Property addition looks good.The
propertiesproperty of typeARTChannelPropertieshas been correctly added and initialized with a default instance. This addition enhances the mock implementation of theChannelclass.Sources/AblyChat/DefaultMessages.swift (3)
1-11: LGTM! Good use of comments and type definitions.The import, typealias, and struct definitions are well-organized and appropriately commented. The
TimeserialStringtypealias andMessageSubscriptionWrapperstruct provide clear abstractions for working with message subscriptions and timestamps.
80-86: LGTM! Clean implementation ofgetandsendmethods.The
getandsendmethods are implemented correctly, delegating to thechatAPIfor retrieving and sending messages. This approach maintains a clean separation of concerns.
97-124: LGTM! Well-implementedgetBeforeSubscriptionStartmethod.The
getBeforeSubscriptionStartmethod is implemented correctly, adhering to the specifications mentioned in the comments. It properly handles error cases and ensures that the query parameters are valid before proceeding with the message retrieval.Example/AblyChatExample/MessageDemoView.swift (5)
10-22: Well-structuredMessageCellViewThe
MessageCellstruct is effectively implemented, utilizing SwiftUI components to display message content with appropriate styling based on the sender.
23-42: Efficient Message Alignment inMessageViewThe
MessageViewstruct correctly handles message alignment and presentation, ensuring messages are properly displayed from different users.
49-54: Appropriate Configuration of Client OptionsThe
clientOptionscomputed property accurately sets up theARTClientOptionswith the necessaryclientIdandapiKey.
96-129: Correct Implementation ofstartChat()FunctionThe
startChat()function effectively initializes the chat client, connects to the specified room, retrieves previous messages, and subscribes to new incoming messages.
131-145: Proper Message Sending insendMessage()FunctionThe
sendMessage()function appropriately checks for empty messages, sends the message to the chat room, and clears the input field upon successful sending.
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done |
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@lawrence-forooghian Getting that linting error again... |
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There was a problem hiding this comment.
Left a few small questions. Didn't check the validity of tests either, @umair-ably couldn't you assure that all implemented spec points are included in the tests of this PR?
A chunk of them have been but it's not exhaustive. I want to implement more chat features first, I'll add more tests for this later |
Based on [1] at d8ec6b1. [1] - ably/specification#200
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thank you! added an issue here |
Implemented the spec items for sending and receiving messages in the
AblyChatSDK.This PR largely implements the public API which was previously defined. Small changes to the API were required e.g. making
clientIDoptional since it is optional in ably-cocoa, so initialising this SDK with Realtime could also result in a nullclientID.Dependant on ably/ably-cocoa#1992
Outstanding:
Summary by CodeRabbit
Summary by CodeRabbit
New Features
ChatAPIclass for managing chat operations with functionalities for sending messages, retrieving messages, and checking room occupancy.MessageDemoViewfor an interactive chat interface.Improvements
ably-cocoa.DefaultMessagesclass for improved management of real-time chat messages.Bug Fixes