Add button to remove a tag

CHDataManagement/Main/SelectedContent.swift

@@ -29,6 +29,12 @@ final class SelectedContent: ObservableObject {
         }
     }
 
+    func remove(_ tag: Tag) {
+        if self.tag == tag {
+            self.tag = nil
+        }
+    }
+
     func remove(_ file: FileResource) {
         if self.file == file {
             self.file = nil

CHDataManagement/Model/Content.swift

@@ -145,6 +145,17 @@ final class Content: ObservableObject {
         // TODO: Check for page links and other references in content
     }
 
+    func remove(_ tag: Tag) {
+        tags.remove(tag)
+        for post in posts {
+            post.tags.remove(tag)
+        }
+        for page in pages {
+            page.tags.remove(tag)
+        }
+        // TODO: Check for tag links and other references is content
+    }
+
     // MARK: Loading
 
     func file(withOutputPath: String) -> FileResource? {

CHDataManagement/Storage/Storage.swift

@@ -151,9 +151,7 @@ final class Storage: ObservableObject {
      Completely delete a post file from the content folder
      */
     func delete(page pageId: String) -> Bool {
-        guard let contentScope else {
-            return false
-        }
+        guard let contentScope else { return false }
         guard contentScope.deleteFile(at: pageMetadataPath(page: pageId)) else {
             return false
         }
@@ -213,9 +211,7 @@ final class Storage: ObservableObject {
      Completely delete a post file from the content folder
      */
     func delete(post postId: String) -> Bool {
-        guard let contentScope else {
-            return false
-        }
+        guard let contentScope else { return false }
         return contentScope.deleteFile(at: postFilePath(post: postId))
     }
 
@@ -258,6 +254,11 @@ final class Storage: ObservableObject {
         return contentScope.move(tagFilePath(tag: tagId), to: tagFilePath(tag: newId))
     }
 
+    func delete(tag tagId: String) -> Bool {
+        guard let contentScope else { return false }
+        return contentScope.deleteFile(at: tagFilePath(tag: tagId))
+    }
+
     // MARK: Files
 
     func size(of file: String) -> Int? {

CHDataManagement/Views/Tags/TagDetailView.swift

@@ -6,6 +6,12 @@ struct TagDetailView: View {
     @Environment(\.language)
     private var language
 
+    @EnvironmentObject
+    private var content: Content
+
+    @EnvironmentObject
+    private var selection: SelectedContent
+
     @ObservedObject
     var tag: Tag
 
@@ -37,10 +43,20 @@ struct TagDetailView: View {
                     tag: tag.localized(in: language),
                     transferImage: transferImage)
                 .id(tag.id + language.rawValue)
+                DeleteButton(action: deleteTag)
             }
             .padding()
         }
     }
+
+    private func deleteTag() {
+        guard content.storage.delete(tag: tag.id) else {
+            print("Tag '\(tag.id)': Failed to delete file in content folder")
+            return
+        }
+        content.remove(tag)
+        selection.remove(tag)
+    }
 }
 
 extension TagDetailView: MainContentView {