Add web app manifest file

CHDataManagement/Generator/HeaderElement.swift

@@ -50,11 +50,14 @@ enum HeaderElement {
 
     case robots
 
+    case manifest(FileResource)
+
     var order: Int {
         switch self {
         case .charset: 1
         case .robots: 2
         case .viewport: 3
+        case .manifest: 4
         case .icon: 10
         case .css(_, let order): order
         case .js: 20
@@ -79,6 +82,8 @@ enum HeaderElement {
             return file
         case .jsModule(let file):
             return file
+        case .manifest(let file):
+            return file
         default:
             return nil
         }
@@ -129,6 +134,8 @@ extension HeaderElement {
             return "<meta name='viewport' content='width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1' />"
         case .robots:
             return "<meta name='robots' content='noindex'>"
+        case .manifest(let file):
+            return "<link rel='manifest' href='\(file.absoluteUrl)'>"
         }
     }
 }
@@ -165,6 +172,8 @@ extension HeaderElement: CustomStringConvertible {
             return "viewport"
         case .robots:
             return "robots"
+        case .manifest:
+            return "manifest"
         }
     }
 }

CHDataManagement/Model/Content+Generation.swift

@@ -175,6 +175,9 @@ extension Content {
         if let css {
             result.insert(.css(file: css, order: HeaderElement.defaultCssFileOrder))
         }
+        if let manifest = settings.pages.manifestFile {
+            result.insert(.manifest(manifest))
+        }
         return result
     }
 

CHDataManagement/Model/Settings/PageSettings.swift

@@ -26,6 +26,9 @@ final class PageSettings: ObservableObject {
     @Published
     var imageCompareCssFile: FileResource?
 
+    @Published
+    var manifestFile: FileResource?
+
     @Published
     var german: LocalizedPageSettings
 
@@ -40,6 +43,7 @@ final class PageSettings: ObservableObject {
          modelViewerJsFile: FileResource? = nil,
          imageCompareJsFile: FileResource? = nil,
          imageCompareCssFile: FileResource? = nil,
+         manifestFile: FileResource? = nil,
          german: LocalizedPageSettings,
          english: LocalizedPageSettings) {
         self.contentWidth = contentWidth
@@ -50,6 +54,7 @@ final class PageSettings: ObservableObject {
         self.modelViewerJsFile = modelViewerJsFile
         self.imageCompareJsFile = imageCompareJsFile
         self.imageCompareCssFile = imageCompareCssFile
+        self.manifestFile = manifestFile
         self.german = german
         self.english = english
     }
@@ -70,6 +75,9 @@ final class PageSettings: ObservableObject {
         if imageCompareCssFile == file {
             imageCompareCssFile = nil
         }
+        if manifestFile == file {
+            manifestFile = nil
+        }
     }
 }
 
@@ -87,6 +95,7 @@ extension PageSettings {
             modelViewerJsFile: data.modelViewerJsFile.map(context.file),
             imageCompareJsFile: data.imageCompareJsFile.map(context.file),
             imageCompareCssFile: data.imageCompareCssFile.map(context.file),
+            manifestFile: data.manifestFile.map(context.file),
             german: .init(data: data.german),
             english: .init(data: data.english))
     }
@@ -100,6 +109,7 @@ extension PageSettings {
               modelViewerJsFile: modelViewerJsFile?.id,
               imageCompareJsFile: imageCompareJsFile?.id,
               imageCompareCssFile: imageCompareCssFile?.id,
+              manifestFile: manifestFile?.id,
               german: german.data,
               english: english.data)
     }
@@ -113,6 +123,7 @@ extension PageSettings {
         let modelViewerJsFile: String?
         let imageCompareJsFile: String?
         let imageCompareCssFile: String?
+        let manifestFile: String?
         let german: LocalizedPageSettings.Data
         let english: LocalizedPageSettings.Data
     }

CHDataManagement/Views/Settings/Pages/PageSettingsDetailView.swift

@@ -57,6 +57,11 @@ struct PageSettingsDetailView: View {
                     selectedFile: $pageSettings.imageCompareJsFile,
                     allowedType: .code)
 
+                FilePropertyView(
+                    title: "Web App Manifest File",
+                    footer: "The manifest file with the properties of the website when used as a progressive web app",
+                    selectedFile: $pageSettings.manifestFile)
+
                 LocalizedPageSettingsView(settings: pageSettings.localized(in: language))
                     .id(language)
             }