Show errors during loading

CHDataManagement/Model/Content.swift

@@ -40,9 +40,6 @@ final class Content: ObservableObject {
     @Published
     private(set) var shouldGenerateWebsite = false
 
-    @State
-    var selectedFile: FileResource?
-
     let imageGenerator: ImageGenerator
 
     init(settings: Settings,
@@ -136,16 +133,18 @@ final class Content: ObservableObject {
             tag.remove(file)
         }
         settings.remove(file)
-        if selectedFile == file {
-            selectedFile = nil
-        }
     }
 
     func file(withOutputPath: String) -> FileResource? {
         files.first { $0.absoluteUrl == withOutputPath }
     }
 
+    private let errorPrinter = ErrorPrinter()
+
     func loadFromDisk(callback: @escaping (_ errors: [String]) -> ()) {
+        defer {
+            storage.contentScope?.delegate = errorPrinter
+        }
         DispatchQueue.global().async {
             let loader = ModelLoader(content: self, storage: self.storage)
             let result = loader.load()

CHDataManagement/Model/FileResource.swift

@@ -3,6 +3,8 @@ import SwiftUI
 
 final class FileResource: Item, LocalizedItem {
 
+    override var itemType: ItemType { .file }
+
     let type: FileType
 
     /// Indicate if the file content is stored by the app

CHDataManagement/Model/Item/ItemType.swift

@@ -7,6 +7,8 @@ enum ItemType: String, Equatable, Hashable {
 
     case tag = "tag"
 
+    case file = "file"
+
     case tagOverview = "tag-overview"
 }
 

CHDataManagement/Model/Loading/LoadingContext.swift

@@ -105,6 +105,12 @@ final class LoadingContext {
                 return nil
             }
             return tagOverview
+        case .file:
+            guard let id = itemId.id else {
+                error("Missing file id in itemId")
+                return nil
+            }
+            return file(id)
         }
     }
 }

CHDataManagement/Model/Loading/ModelLoader.swift

@@ -1,4 +1,17 @@
 
+final class LoadingErrorHandler: SecurityBookmarkErrorDelegate {
+
+    let context: LoadingContext
+
+    init(context: LoadingContext) {
+        self.context = context
+    }
+
+    func securityBookmark(error: String) {
+        context.error("\(error)")
+    }
+}
+
 final class ModelLoader {
 
     let content: Content
@@ -7,10 +20,14 @@ final class ModelLoader {
 
     let context: LoadingContext
 
+    let errorHandler: LoadingErrorHandler
+
     init(content: Content, storage: Storage) {
         self.content = content
         self.storage = storage
         self.context = .init(content: content)
+        self.errorHandler = .init(context: context)
+        storage.contentScope?.delegate = errorHandler
     }
 
     func load() -> LoadingResult {