Slur Filter Warning

Mlem/API/Models/Site/APILocalSite.swift

@@ -23,7 +23,7 @@ struct APILocalSite: Decodable {
 //    let legalInformation: String?
 //    let hideModlogModNames: Bool
 //    let applicationEmailAdmins: Bool
-//    let slurFilterRegex: String?
+      let slurFilterRegex: String?
 //    let actorNameMaxLength: Int
 //    let federationEnabled: Bool
 //    let federationDebug: Bool

Mlem/Models/Composers/Response Composers/EditorModelProtocol.swift

@@ -16,6 +16,8 @@ protocol ResponseEditorModel: Identifiable {
 
     var modalName: String { get } // what to title the modal
 
+    var showSlurWarning: Bool { get }
+
     var prefillContents: String? { get } // optional, contents to prepopulate the editor with
 
     func embeddedView() -> AnyView

Mlem/Models/Composers/Response Composers/Editors/CommentEditor.swift

@@ -13,6 +13,7 @@ struct CommentEditor: ResponseEditorModel {
     @Dependency(\.commentRepository) var commentRepository
 
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "Edit Comment"
     var prefillContents: String? { comment.comment.content }
     let comment: APICommentView

Mlem/Models/Composers/Response Composers/Replies/ReplyToComment.swift

@@ -14,6 +14,7 @@ struct ReplyToComment: ResponseEditorModel {
 
     var id: Int { comment.id }
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "New Comment"
     let comment: APICommentView
     let prefillContents: String?

Mlem/Models/Composers/Response Composers/Replies/ReplyToCommentReply.swift

@@ -13,6 +13,7 @@ struct ReplyToCommentReply: ResponseEditorModel {
     @Dependency(\.commentRepository) var commentRepository
 
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "New Comment"
     let prefillContents: String? = nil
     let commentReply: ReplyModel

Mlem/Models/Composers/Response Composers/Replies/ReplyToMention.swift

@@ -13,6 +13,7 @@ struct ReplyToMention: ResponseEditorModel {
     @Dependency(\.commentRepository) var commentRepository
 
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "New Comment"
     let prefillContents: String? = nil
     let mention: MentionModel

Mlem/Models/Composers/Response Composers/Replies/ReplyToMessage.swift

@@ -15,6 +15,7 @@ struct ReplyToMessage: ResponseEditorModel {
 
     var id: Int { message.id }
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "New Message"
     let prefillContents: String? = nil
     let message: MessageModel

Mlem/Models/Composers/Response Composers/Replies/ReplyToPost.swift

@@ -13,6 +13,7 @@ struct ReplyToPost: ResponseEditorModel {
     @Dependency(\.commentRepository) var commentRepository
 
     let canUpload: Bool = true
+    let showSlurWarning: Bool = true
     let modalName: String = "New Comment"
     let prefillContents: String?
     let commentTracker: CommentTracker?

Mlem/Models/Composers/Response Composers/Reports/ReportComment.swift

@@ -14,6 +14,7 @@ struct ReportComment: ResponseEditorModel {
 
     var id: Int { comment.id }
     let canUpload: Bool = false
+    let showSlurWarning: Bool = false
     let modalName: String = "Report Comment"
     let prefillContents: String? = nil
     let comment: APICommentView

Mlem/Models/Composers/Response Composers/Reports/ReportCommentReply.swift

@@ -14,6 +14,7 @@ struct ReportCommentReply: ResponseEditorModel {
 
     var id: Int { commentReply.id }
     let canUpload: Bool = false
+    let showSlurWarning: Bool = false
     let modalName: String = "Report Comment"
     let prefillContents: String? = nil
     let commentReply: ReplyModel

Mlem/Models/Composers/Response Composers/Reports/ReportMention.swift

@@ -14,6 +14,7 @@ struct ReportMention: ResponseEditorModel {
 
     var id: Int { mention.id }
     let canUpload: Bool = false
+    let showSlurWarning: Bool = false
     let modalName: String = "Report Comment"
     let prefillContents: String? = nil
     let mention: MentionModel

Mlem/Models/Composers/Response Composers/Reports/ReportMessage.swift

@@ -15,6 +15,7 @@ struct ReportMessage: ResponseEditorModel {
 
     var id: Int { message.id }
     let canUpload: Bool = false
+    let showSlurWarning: Bool = false
     let modalName: String = "Report Message"
     let prefillContents: String? = nil
     let message: MessageModel

Mlem/Models/Composers/Response Composers/Reports/ReportPost.swift

@@ -15,6 +15,7 @@ struct ReportPost: ResponseEditorModel {
 
     var id: Int { post.postId }
     let canUpload: Bool = false
+    let showSlurWarning: Bool = false
     let modalName: String = "Report Post"
     let prefillContents: String? = nil
     let post: PostModel

Mlem/Models/Content/Instance/InstanceModel.swift

@@ -17,6 +17,8 @@ struct InstanceModel {
     var url: URL!
     var version: SiteVersion?
 
+    var slurFilterRegex: Regex<AnyRegexOutput>?
+
     init(from response: SiteResponse) {
         self.update(with: response)
     }
@@ -33,6 +35,17 @@ struct InstanceModel {
             return user
         }
         self.version = SiteVersion(response.version)
+
+        let localSite = response.siteView.localSite
+
+        do {
+            if let regex = localSite.slurFilterRegex {
+                self.slurFilterRegex = try .init(regex)
+            }
+        } catch {
+            print("Invalid slur filter regex")
+        }
+
         self.update(with: response.siteView.site)
     }
 
@@ -48,6 +61,19 @@ struct InstanceModel {
             url = components.url
         }
     }
+
+    func firstSlurFilterMatch(_ input: String) -> String? {
+        do {
+            if let slurFilterRegex {
+                if let output = try slurFilterRegex.firstMatch(in: input.lowercased()) {
+                    return String(input[output.range])
+                }
+            }
+        } catch {
+            print("REGEX FAILED")
+        }
+        return nil
+    }
 }
 
 extension InstanceModel: Identifiable {

Mlem/Models/Trackers/SiteInformationTracker.swift

@@ -21,6 +21,7 @@ class SiteInformationTracker: ObservableObject {
     @Published var myUserInfo: APIMyUserInfo?
 
     func load(account: SavedAccount) {
+
         version = account.siteVersion
         Task {
             do {
@@ -36,6 +37,7 @@ class SiteInformationTracker: ObservableObject {
                 }
                 myUserInfo = response.myUser
                 allLanguages = response.allLanguages
+
             } catch {
                 errorHandler.handle(error)
             }

Mlem/Views/Shared/Components/Image Upload/LinkAttachmentModel.swift

@@ -145,10 +145,10 @@ class LinkAttachmentModel: ObservableObject {
         if let task = self.uploadTask {
             task.cancel()
         }
+        self.photosPickerItem = nil
         switch self.imageModel?.state {
         case .uploaded(file: let file):
             if let file = file {
-                self.photosPickerItem = nil
                 Task {
                     do {
                         if let compareUrl {

Mlem/Views/Shared/Composer/PostComposerView+Logic.swift

@@ -17,7 +17,7 @@ extension PostComposerView {
     var isReadyToPost: Bool {
         switch attachmentModel.imageModel?.state {
         case nil, .uploaded:
-            return postTitle.trimmed.isNotEmpty
+            return postTitle.trimmed.isNotEmpty && titleSlurMatch == nil && bodySlurMatch == nil
         default:
             return false
         }

Mlem/Views/Shared/Composer/PostComposerView.swift

@@ -54,6 +54,9 @@ struct PostComposerView: View {
 
     @FocusState private var focusedField: Field?
 
+    @State var titleSlurMatch: String?
+    @State var bodySlurMatch: String?
+
     init(editModel: PostEditorModel) {
         self.editModel = editModel
 
@@ -73,22 +76,7 @@ struct PostComposerView: View {
                 .edgesIgnoringSafeArea(.bottom)
                 VStack(spacing: 0) {
                     // Community Row
-                    HStack {
-                        CommunityLabelView(
-                            community: editModel.community,
-                            serverInstanceLocation: .bottom,
-                            overrideShowAvatar: true
-                        )
-                        Spacer()
-                        if let person = siteInformation.myUserInfo?.localUserView.person {
-                            UserLabelView(
-                                person: person,
-                                serverInstanceLocation: .bottom,
-                                overrideShowAvatar: true
-                            )
-                            .environment(\.layoutDirection, layoutDirection == .leftToRight ? .rightToLeft : .leftToRight)
-                        }
-                    }
+                    headerView
                     .padding(.bottom, 15)
                     .padding(.horizontal)
                     .zIndex(1)
@@ -103,17 +91,22 @@ struct PostComposerView: View {
                             }
                             .padding(.top)
                             .padding(.horizontal)
+                            .onChange(of: postTitle) { newValue in
+                                titleSlurMatch = siteInformation.instance?.firstSlurFilterMatch(newValue)
+                            }
 
                         if attachmentModel.imageModel != nil || attachmentModel.url.isNotEmpty {
                             VStack {
                                 let url = URL(string: attachmentModel.url)
                                 if !(url?.isImage ?? true) {
                                     HStack(spacing: AppConstants.postAndCommentSpacing) {
-                                        Image(systemName: "link")
+                                        Image(systemName: Icons.websiteAddress)
                                             .foregroundStyle(.blue)
+                                            .padding(.leading, 5)
                                         Text(attachmentModel.url)
                                             .foregroundStyle(.secondary)
                                             .lineLimit(1)
+                                        Spacer()
                                         Button(action: attachmentModel.removeLinkAction, label: {
                                             Image(systemName: Icons.close)
                                                 .fontWeight(.semibold)
@@ -186,6 +179,9 @@ struct PostComposerView: View {
                         .accessibilityLabel("Post Body")
                         .focused($focusedField, equals: .body)
                         .padding(.horizontal)
+                        .onChange(of: postBody) { newValue in
+                            bodySlurMatch = siteInformation.instance?.firstSlurFilterMatch(newValue)
+                        }
 
                         Spacer()
                     }
@@ -236,7 +232,7 @@ struct PostComposerView: View {
                 }
                 ToolbarItem(placement: .navigationBarTrailing) {
                     LinkUploadOptionsView(model: attachmentModel) {
-                        Label("Attach image or link", systemImage: "link")
+                        Label("Attach Image or Link", systemImage: Icons.websiteAddress)
                     }
                     .disabled(attachmentModel.imageModel != nil || attachmentModel.url.isNotEmpty)
                 }
@@ -261,4 +257,36 @@ struct PostComposerView: View {
         .navigationBarColor()
         .navigationBarTitleDisplayMode(.inline)
     }
+
+    @ViewBuilder
+    var headerView: some View {
+        HStack {
+            CommunityLabelView(
+                community: editModel.community,
+                serverInstanceLocation: .bottom,
+                overrideShowAvatar: true
+            )
+            Spacer()
+            if let person = siteInformation.myUserInfo?.localUserView.person {
+                UserLabelView(
+                    person: person,
+                    serverInstanceLocation: .bottom,
+                    overrideShowAvatar: true
+                )
+                .environment(\.layoutDirection, layoutDirection == .leftToRight ? .rightToLeft : .leftToRight)
+            }
+        }
+        .overlay {
+            if let slurMatch = titleSlurMatch == nil ? bodySlurMatch : titleSlurMatch {
+                ZStack {
+                    Capsule()
+                        .fill(.red)
+                    Text("\"\(slurMatch)\" is disallowed.")
+                        .foregroundStyle(.white)
+                }
+                .padding(-2)
+            }
+        }
+        .animation(.default, value: titleSlurMatch == nil && bodySlurMatch == nil)
+    }
 }

Mlem/Views/Shared/Composer/ResponseEditorView.swift

@@ -15,6 +15,7 @@ struct ResponseEditorView: View {
     }
 
     @Dependency(\.errorHandler) var errorHandler
+    @Dependency(\.siteInformation) var siteInformation
 
     let editorModel: any ResponseEditorModel
 
@@ -28,20 +29,14 @@ struct ResponseEditorView: View {
     @State var editorBody: String
     @State var isSubmitting: Bool = false
 
+    @State var slurMatch: String?
+
     @FocusState private var focusedField: Field?
 
     private var isReadyToReply: Bool {
         editorBody.trimmed.isNotEmpty
     }
-
-    func uploadImage() {
-        if editorModel.canUpload {
-            print("Uploading")
-        } else {
-            print("Uploading disabled for this sort of response")
-        }
-    }
-
+
     var body: some View {
         ScrollView {
             VStack(spacing: AppConstants.postAndCommentSpacing) {
@@ -58,11 +53,32 @@ struct ResponseEditorView: View {
                 .onAppear {
                     focusedField = .editorBody
                 }
+                .onChange(of: editorBody) { newValue in
+                    if editorModel.showSlurWarning {
+                        slurMatch = siteInformation.instance?.firstSlurFilterMatch(newValue)
+                    }
+                }
 
                 Divider()
 
-                editorModel.embeddedView()
+                if let slurMatch {
+                    VStack {
+                        Text("\"\(slurMatch)\" is disallowed.")
+                            .foregroundStyle(.white)
+                        Text("You can still post this comment, but your instance will replace \"\(slurMatch)\" with \"*removed*\".")
+                            .multilineTextAlignment(.center)
+                            .font(.footnote)
+                            .foregroundStyle(.white.opacity(0.8))
+                    }
+                    .padding()
+                    .frame(maxWidth: .infinity)
+                    .background(RoundedRectangle(cornerRadius: AppConstants.largeItemCornerRadius).fill(.red))
+                    .padding(.horizontal, 10)
+                } else {
+                    editorModel.embeddedView()
+                }
             }
+            .animation(.default, value: slurMatch)
             .padding(.bottom, AppConstants.editorOverscroll)
         }
         .scrollDismissesKeyboard(.automatic)