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Image uploading #652

Merged
merged 21 commits into from
Oct 1, 2023
Merged

Image uploading #652

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6624a55
Add function to upload image
Sjmarf Sep 24, 2023
76e695d
Update
Sjmarf Sep 24, 2023
4a3786c
UI
Sjmarf Sep 24, 2023
0802b31
Update
Sjmarf Sep 25, 2023
a08583f
Extra check
Sjmarf Sep 25, 2023
d94ccf5
Update
Sjmarf Sep 26, 2023
7a6d545
Merge branch 'dev' into sjmarf/image-upload
Sjmarf Sep 26, 2023
2158383
Icon
Sjmarf Sep 26, 2023
4bded01
Delete from pictrs if attachment removed
Sjmarf Sep 29, 2023
d36cc85
Update project.pbxproj
Sjmarf Sep 29, 2023
2b324ef
Improved error handling
Sjmarf Sep 29, 2023
9252b67
Update
Sjmarf Sep 30, 2023
a04d941
Update
Sjmarf Sep 30, 2023
7274bc8
Oops, wrong default
Sjmarf Sep 30, 2023
caa144c
Update UploadConfirmationView.swift
Sjmarf Sep 30, 2023
bd8ecd5
Bug fix
Sjmarf Sep 30, 2023
e3162f9
Bug fix
Sjmarf Sep 30, 2023
e23dfec
Bug fix
Sjmarf Sep 30, 2023
324feda
- Add boolean to track if we've asked user for upload permission.
boscojwho Oct 1, 2023
d211f7d
Merge branch 'dev' into sjmarf/image-upload
Sjmarf Oct 1, 2023
c04a143
Merge branch 'sjmarf/image-upload' of https://github.com/mlemgroup/ml…
Sjmarf Oct 1, 2023
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40 changes: 40 additions & 0 deletions Mlem.xcodeproj/project.pbxproj
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -11,10 +11,16 @@
030AC0522A64666C00037155 /* UserSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030AC0512A64666C00037155 /* UserSettingsView.swift */; };
030D4AE62AA1273200A3393D /* ErrorDetails.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030D4AE52AA1273200A3393D /* ErrorDetails.swift */; };
030D4AE82AA1278400A3393D /* ErrorDetails+Mock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030D4AE72AA1278400A3393D /* ErrorDetails+Mock.swift */; };
030E86392AC6B44B000283A6 /* DeletePictrsFile.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030E86382AC6B44B000283A6 /* DeletePictrsFile.swift */; };
030E863B2AC6C3B1000283A6 /* PictrsRespository.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030E863A2AC6C3B1000283A6 /* PictrsRespository.swift */; };
030E863D2AC6C49E000283A6 /* PictrsRepository+Dependency.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030E863C2AC6C49E000283A6 /* PictrsRepository+Dependency.swift */; };
030E863F2AC6C5E9000283A6 /* PictrsImageModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 030E863E2AC6C5E9000283A6 /* PictrsImageModel.swift */; };
031A93D62AC847DA0077030C /* UploadConfirmationView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 031A93D52AC847DA0077030C /* UploadConfirmationView.swift */; };
031BF9532AB24BAF00F4517F /* SiteVersion.swift in Sources */ = {isa = PBXBuildFile; fileRef = 031BF9522AB24BAF00F4517F /* SiteVersion.swift */; };
031BF9552AB25AFB00F4517F /* SiteVersionTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 031BF9542AB25AFB00F4517F /* SiteVersionTests.swift */; };
032109472AA7C3FC00912DFC /* CommunityLabelView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 032109462AA7C3FC00912DFC /* CommunityLabelView.swift */; };
032109492AA7C41800912DFC /* AvatarView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 032109482AA7C41800912DFC /* AvatarView.swift */; };
032DD2FD2AC3594B00F1B33D /* ImageUploadView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 032DD2FC2AC3594B00F1B33D /* ImageUploadView.swift */; };
034C724F2A82B61200B8A4B8 /* LayoutWidgetTracker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 034C724E2A82B61200B8A4B8 /* LayoutWidgetTracker.swift */; };
035EB0CA2A8687C200227859 /* JumpButtonView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 035EB0C92A8687C200227859 /* JumpButtonView.swift */; };
038A16DF2A75172C0087987E /* LayoutWidgetEditView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 038A16DE2A75172C0087987E /* LayoutWidgetEditView.swift */; };
Expand All @@ -35,6 +41,8 @@
03E0B9C82A61F0F400FED265 /* AdvancedSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03E0B9C72A61F0F400FED265 /* AdvancedSettingsView.swift */; };
03E0B9CA2A62B4A400FED265 /* ContributorsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03E0B9C92A62B4A400FED265 /* ContributorsView.swift */; };
03E0B9CC2A62CD5800FED265 /* ThemeSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03E0B9CB2A62CD5800FED265 /* ThemeSettingsView.swift */; };
03EA79C42AC0D92C00BCDC91 /* PostDetailEditorView+Logic.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03EA79C32AC0D92C00BCDC91 /* PostDetailEditorView+Logic.swift */; };
03EC92992AC0BF8A007BBE7E /* APIClient+Pictrs.swift in Sources */ = {isa = PBXBuildFile; fileRef = 03EC92982AC0BF8A007BBE7E /* APIClient+Pictrs.swift */; };
500C168E2A66FAAB006F243B /* HapticManager+Dependency.swift in Sources */ = {isa = PBXBuildFile; fileRef = 500C168D2A66FAAB006F243B /* HapticManager+Dependency.swift */; };
5016A2B12A67EB8600B257E8 /* UIViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5016A2B02A67EB8600B257E8 /* UIViewController.swift */; };
5016A2B32A67EC0700B257E8 /* NotificationDisplayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5016A2B22A67EC0700B257E8 /* NotificationDisplayer.swift */; };
Expand Down Expand Up @@ -463,10 +471,16 @@
030AC0512A64666C00037155 /* UserSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserSettingsView.swift; sourceTree = "<group>"; };
030D4AE52AA1273200A3393D /* ErrorDetails.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ErrorDetails.swift; sourceTree = "<group>"; };
030D4AE72AA1278400A3393D /* ErrorDetails+Mock.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "ErrorDetails+Mock.swift"; sourceTree = "<group>"; };
030E86382AC6B44B000283A6 /* DeletePictrsFile.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeletePictrsFile.swift; sourceTree = "<group>"; };
030E863A2AC6C3B1000283A6 /* PictrsRespository.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PictrsRespository.swift; sourceTree = "<group>"; };
030E863C2AC6C49E000283A6 /* PictrsRepository+Dependency.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "PictrsRepository+Dependency.swift"; sourceTree = "<group>"; };
030E863E2AC6C5E9000283A6 /* PictrsImageModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PictrsImageModel.swift; sourceTree = "<group>"; };
031A93D52AC847DA0077030C /* UploadConfirmationView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UploadConfirmationView.swift; sourceTree = "<group>"; };
031BF9522AB24BAF00F4517F /* SiteVersion.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SiteVersion.swift; sourceTree = "<group>"; };
031BF9542AB25AFB00F4517F /* SiteVersionTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SiteVersionTests.swift; sourceTree = "<group>"; };
032109462AA7C3FC00912DFC /* CommunityLabelView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CommunityLabelView.swift; sourceTree = "<group>"; };
032109482AA7C41800912DFC /* AvatarView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AvatarView.swift; sourceTree = "<group>"; };
032DD2FC2AC3594B00F1B33D /* ImageUploadView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageUploadView.swift; sourceTree = "<group>"; };
034C724E2A82B61200B8A4B8 /* LayoutWidgetTracker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LayoutWidgetTracker.swift; sourceTree = "<group>"; };
035EB0C92A8687C200227859 /* JumpButtonView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = JumpButtonView.swift; sourceTree = "<group>"; };
038A16DE2A75172C0087987E /* LayoutWidgetEditView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LayoutWidgetEditView.swift; sourceTree = "<group>"; };
Expand All @@ -487,6 +501,8 @@
03E0B9C72A61F0F400FED265 /* AdvancedSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AdvancedSettingsView.swift; sourceTree = "<group>"; };
03E0B9C92A62B4A400FED265 /* ContributorsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContributorsView.swift; sourceTree = "<group>"; };
03E0B9CB2A62CD5800FED265 /* ThemeSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThemeSettingsView.swift; sourceTree = "<group>"; };
03EA79C32AC0D92C00BCDC91 /* PostDetailEditorView+Logic.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "PostDetailEditorView+Logic.swift"; sourceTree = "<group>"; };
03EC92982AC0BF8A007BBE7E /* APIClient+Pictrs.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "APIClient+Pictrs.swift"; sourceTree = "<group>"; };
500C168D2A66FAAB006F243B /* HapticManager+Dependency.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HapticManager+Dependency.swift"; sourceTree = "<group>"; };
5016A2B02A67EB8600B257E8 /* UIViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UIViewController.swift; sourceTree = "<group>"; };
5016A2B22A67EC0700B257E8 /* NotificationDisplayer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationDisplayer.swift; sourceTree = "<group>"; };
Expand Down Expand Up @@ -1022,6 +1038,15 @@
path = User;
sourceTree = "<group>";
};
031A93D42AC847D10077030C /* Image Upload */ = {
isa = PBXGroup;
children = (
032DD2FC2AC3594B00F1B33D /* ImageUploadView.swift */,
031A93D52AC847DA0077030C /* UploadConfirmationView.swift */,
);
path = "Image Upload";
sourceTree = "<group>";
};
031BF9562AB25AFE00F4517F /* Model */ = {
isa = PBXGroup;
children = (
Expand Down Expand Up @@ -1193,6 +1218,7 @@
50C99B5B2A61F5EB005D57DD /* CommentRepository.swift */,
CD82A2522A716B8100111034 /* PersonRepository.swift */,
CD6F29A92A78003A00F20B6B /* PostRepository.swift */,
030E863A2AC6C3B1000283A6 /* PictrsRespository.swift */,
50A881292A72D6BD003E3661 /* CommunityRepository.swift */,
50A881232A71A4CD003E3661 /* PersistenceRepository.swift */,
);
Expand Down Expand Up @@ -1285,6 +1311,7 @@
6386E0352A042C59006B3C1D /* Contributor.swift */,
63F0C7A52A05225100A18C5D /* Saved Account.swift */,
63CE4E722A06F5A100405271 /* Access Token.swift */,
030E863E2AC6C5E9000283A6 /* PictrsImageModel.swift */,
63E5D3932A13CF3600EC1FBD /* Favorite Community.swift */,
CD2BD6772A79F55800ECFF89 /* ImageSize.swift */,
030D4AE52AA1273200A3393D /* ErrorDetails.swift */,
Expand Down Expand Up @@ -1698,6 +1725,7 @@
637218282A3A2AAD008C4816 /* CreatePostLike.swift */,
637218292A3A2AAD008C4816 /* DeletePost.swift */,
6372182A2A3A2AAD008C4816 /* CreatePost.swift */,
030E86382AC6B44B000283A6 /* DeletePictrsFile.swift */,
6372182B2A3A2AAD008C4816 /* GetPost.swift */,
6372182C2A3A2AAD008C4816 /* GetPosts.swift */,
6372182D2A3A2AAD008C4816 /* SavePost.swift */,
Expand Down Expand Up @@ -1883,6 +1911,7 @@
ADF266942A4E8A1E00EBA648 /* PostComposerView.swift */,
CD391F952A535F5400E213B5 /* ResponseEditorView.swift */,
03CB329D2A6D8E910021EF27 /* PostDetailEditorView.swift */,
03EA79C32AC0D92C00BCDC91 /* PostDetailEditorView+Logic.swift */,
);
path = Composer;
sourceTree = "<group>";
Expand Down Expand Up @@ -1914,6 +1943,7 @@
637218012A3A2AAD008C4816 /* APIClient.swift */,
50A881272A71D66B003E3661 /* APIClient+Community.swift */,
50A8812D2A72D76C003E3661 /* APIClient+Comment.swift */,
03EC92982AC0BF8A007BBE7E /* APIClient+Pictrs.swift */,
CDEBC3382A9ADE6C00518D9D /* APIClient+Post.swift */,
);
path = APIClient;
Expand Down Expand Up @@ -1980,6 +2010,7 @@
CD69F5702A422EDD0028D4F7 /* InteractionBarView.swift */,
632E8EE427EE63BD007E8D75 /* Components */,
CDF1EF152A6C3BC2003594B6 /* End Of Feed View.swift */,
031A93D42AC847D10077030C /* Image Upload */,
CD45BCED2A75CA7200A2899C /* Thumbnail Image View.swift */,
CDC1C9422A7AC24600072E3D /* ReadCheck.swift */,
CD309C452A93FBD300988F95 /* Logo View.swift */,
Expand Down Expand Up @@ -2052,6 +2083,7 @@
50A881252A71A511003E3661 /* PersistenceRepository+Dependency.swift */,
CD82A2562A716D7C00111034 /* PersonRepository+Dependency.swift */,
CD6F29AB2A78015200F20B6B /* PostRepository+Dependency.swift */,
030E863C2AC6C49E000283A6 /* PictrsRepository+Dependency.swift */,
);
path = Repositories;
sourceTree = "<group>";
Expand Down Expand Up @@ -2573,6 +2605,7 @@
CDB0117F2A6F70A000D043EB /* Editor Tracker.swift in Sources */,
6354F30A2A2E20040074C08D /* Alert - Multiple Alerts.swift in Sources */,
6318EDC727EE4E1500BFCAE8 /* Post.swift in Sources */,
03EC92992AC0BF8A007BBE7E /* APIClient+Pictrs.swift in Sources */,
6372186C2A3A2AAD008C4816 /* SaveComment.swift in Sources */,
E4D4DBA22A7F233200C4F3DE /* FancyTabNavigationSelectionHashValueEnvironmentKey.swift in Sources */,
6DD8677A2A5083A200BEB00F /* Community Sidebar Link.swift in Sources */,
Expand All @@ -2588,6 +2621,7 @@
5064D03D2A6DE0AA00B22EE3 /* Notifier.swift in Sources */,
CDC65D912A86B830007205E5 /* DeleteAccountView.swift in Sources */,
CD391F9C2A53980900E213B5 /* ReplyToCommentReply.swift in Sources */,
030E863D2AC6C49E000283A6 /* PictrsRepository+Dependency.swift in Sources */,
630737892A1CD1E900039852 /* String.swift in Sources */,
50811B402A9205EE006BA3F2 /* CommunityResponse+Mock.swift in Sources */,
03E0B9CC2A62CD5800FED265 /* ThemeSettingsView.swift in Sources */,
Expand Down Expand Up @@ -2624,6 +2658,7 @@
637218672A3A2AAD008C4816 /* GetPersonDetails.swift in Sources */,
B1A26FE12A44AAB200B91A32 /* Navigation getter.swift in Sources */,
6332FDC027EFB05F0009A98A /* Settings Item.swift in Sources */,
031A93D62AC847DA0077030C /* UploadConfirmationView.swift in Sources */,
CD8C55342A95515C0060B75B /* Onboarding Text.swift in Sources */,
50C99B602A6299D8005D57DD /* ErrorHandler.swift in Sources */,
50F830F82A4C92BF00D67099 /* FeedTrackerItemProviding.swift in Sources */,
Expand Down Expand Up @@ -2654,11 +2689,13 @@
E4F0B56F2ABD00A000BC3E4A /* PresentationBackgroundInteraction.swift in Sources */,
CDF842612A49EA3900723DA0 /* Mentions Tracker.swift in Sources */,
6D693A4C2A51B99E009E2D76 /* APICommentReport.swift in Sources */,
030E863B2AC6C3B1000283A6 /* PictrsRespository.swift in Sources */,
63344C672A08D4E3001BC616 /* AppearanceSettingsView.swift in Sources */,
E49F0E762A90395400BC4EE3 /* NavigationPath+Helpers.swift in Sources */,
B1955A1F2A606F010056CF99 /* EasterFlagsTracker.swift in Sources */,
63D24ED92A169A5F005CCA81 /* UIApplication.swift in Sources */,
039439912A98FA6100463032 /* UserFeedView.swift in Sources */,
03EA79C42AC0D92C00BCDC91 /* PostDetailEditorView+Logic.swift in Sources */,
637218482A3A2AAD008C4816 /* APICommentReply.swift in Sources */,
032109472AA7C3FC00912DFC /* CommunityLabelView.swift in Sources */,
637218502A3A2AAD008C4816 /* APIPersonAggregates.swift in Sources */,
Expand Down Expand Up @@ -2741,6 +2778,7 @@
03CB329E2A6D8E910021EF27 /* PostDetailEditorView.swift in Sources */,
CD69F5752A42479A0028D4F7 /* Comment Item Logic.swift in Sources */,
6D7782342A48EE8C008AC1BF /* APIPrivateMessageView.swift in Sources */,
030E86392AC6B44B000283A6 /* DeletePictrsFile.swift in Sources */,
50811B342A9204EB006BA3F2 /* APICommunityAggregates+Mock.swift in Sources */,
B11A1A782A4EFF2B00520DB4 /* Feed Root.swift in Sources */,
CDC1C93F2A7AB8C700072E3D /* AccessibilitySettingsView.swift in Sources */,
Expand Down Expand Up @@ -2806,6 +2844,7 @@
5016A2B12A67EB8600B257E8 /* UIViewController.swift in Sources */,
6372184C2A3A2AAD008C4816 /* APIPostView.swift in Sources */,
CDB0117D2A6F703800D043EB /* CommentEditor.swift in Sources */,
030E863F2AC6C5E9000283A6 /* PictrsImageModel.swift in Sources */,
632E8EE627EE63D3007E8D75 /* UpvoteButtonView.swift in Sources */,
B1A26FE32A45B11800B91A32 /* View - Handle Lemmy Links.swift in Sources */,
03B643572A6864CD00F65700 /* TabBarSettingsView.swift in Sources */,
Expand All @@ -2830,6 +2869,7 @@
03A1B3F72A84000400AB0DE0 /* APIContentAggregatesProtocol.swift in Sources */,
CD4DBC032A6F803C001A1E61 /* ReplyToPost.swift in Sources */,
CD6483302A38D31C00EE6CA3 /* UpvoteCounterView.swift in Sources */,
032DD2FD2AC3594B00F1B33D /* ImageUploadView.swift in Sources */,
88B165B82A8643F4007C9115 /* View - NavigationBar Color.swift in Sources */,
030AC0522A64666C00037155 /* UserSettingsView.swift in Sources */,
CDA2C5262A705D6000649D5A /* PostEditor.swift in Sources */,
Expand Down
107 changes: 107 additions & 0 deletions Mlem/API/APIClient/APIClient+Pictrs.swift
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,107 @@
//
// APIClient+Pictrs.swift
// Mlem
//
// Created by Sjmarf on 24/09/2023.
//

import Foundation

extension APIClient {
@discardableResult
func deleteImage(file: PictrsFile) async throws -> ImageDeleteResponse {
let request = try ImageDeleteRequest(session: session, file: file.file, deleteToken: file.deleteToken)
return try await perform(request: request)
}

func uploadImage(
_ imageData: Data,
onProgress progressCallback: @escaping (_ progress: Double) -> Void,
onCompletion completionCallback: @escaping(_ response: ImageUploadResponse?) -> Void,
`catch`: @escaping (Error) -> Void
) async throws -> Task<(), any Error> {

let delegate = ImageUploadDelegate(callback: progressCallback)
// Modify the instance URL to remove "api/v3" and add "pictrs/image".
var components = URLComponents()
components.scheme = try self.session.instanceUrl.scheme
components.host = try self.session.instanceUrl.host
components.path = "/pictrs/image"

guard let url = components.url else {
throw APIClientError.response(.init(error: "Failed to modify instance URL to add pictrs."), nil)
}
var request = URLRequest(url: url)
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request.httpMethod = "POST"

let boundary = UUID().uuidString

request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
request.setValue("jwt=\(try session.token)", forHTTPHeaderField: "Cookie")

let multiPartForm: MultiPartForm = try .init(
mimeType: "image/png",
fileName: "image.png",
imageData: imageData,
auth: session.token
)

return Task { [request] in
do {
let (data, _) = try await self.urlSession.upload(
for: request,
from: multiPartForm.createField(boundary: boundary),
delegate: delegate)
do {
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
let response = try decoder.decode(ImageUploadResponse.self, from: data)
completionCallback(response)
} catch DecodingError.dataCorrupted {
throw APIClientError.decoding(data)
}
} catch {
if !Task.isCancelled {
`catch`(error)
}
}
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}
}
}

private struct MultiPartForm: Codable {
var mimeType: String
var fileName: String
var imageData: Data
var auth: String

func createField(boundary: String) -> Data {
var data = Data()
data.append(Data("--\(boundary)\r\n".utf8))
data.append(Data("Content-Disposition: form-data; name=\"images[]\"; filename=\"\(fileName)\"\r\n".utf8))
data.append(Data("Content-Type: \(mimeType)\r\n".utf8))
data.append(Data("\r\n".utf8))
data.append(imageData)
data.append(Data("\r\n".utf8))
data.append(Data("--\(boundary)--\r\n".utf8))
return data
}
}

private class ImageUploadDelegate: NSObject, URLSessionTaskDelegate {
public let callback: (Double) -> Void

public init(callback: @escaping (Double) -> Void) {
self.callback = callback
}

public func urlSession(
_ session: URLSession,
task: URLSessionTask,
didSendBodyData bytesSent: Int64,
totalBytesSent: Int64,
totalBytesExpectedToSend: Int64
) {
callback(Double(totalBytesSent) / Double(totalBytesExpectedToSend))
}
}
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