Show external files in generation

CHDataManagement/Generator/Results/GenerationResults.swift

@@ -25,6 +25,9 @@ final class GenerationResults: ObservableObject {
     @Published
     var requiredFiles: Set<FileResource> = []
 
+    @Published
+    var externalFiles: Set<FileResource> = []
+
     @Published
     var imagesToGenerate: Set<ImageVersion> = []
 
@@ -113,6 +116,7 @@ final class GenerationResults: ObservableObject {
             self.missingPages = []
             self.externalLinks = []
             self.requiredFiles = []
+            self.externalFiles = []
             self.imagesToGenerate = []
             self.invalidCommands = []
             self.invalidBlocks = []
@@ -143,6 +147,8 @@ final class GenerationResults: ObservableObject {
         update { self.externalLinks = externalLinks }
         let requiredFiles = cache.values.map { $0.requiredFiles }.union()
         update { self.requiredFiles = requiredFiles }
+        let externalFiles = cache.values.map { $0.requiredFiles.filter { $0.isExternallyStored } }.union()
+        update { self.externalFiles = externalFiles }
         let imagesToGenerate = cache.values.map { $0.imagesToGenerate }.union()
         update { self.imagesToGenerate = imagesToGenerate }
         let invalidCommands = cache.values.map { $0.invalidCommands.map { $0.markdown }}.union()
@@ -195,11 +201,19 @@ final class GenerationResults: ObservableObject {
     }
 
     func require(file: FileResource) {
-        update { self.requiredFiles.insert(file) }
+        update {
+            self.requiredFiles.insert(file)
+            if file.isExternallyStored {
+                self.externalFiles.insert(file)
+            }
+        }
     }
 
     func require<S>(files: S) where S: Sequence, S.Element == FileResource {
-        update { self.requiredFiles.formUnion(files) }
+        update {
+            self.requiredFiles.formUnion(files)
+            self.externalFiles.formUnion(files.filter { $0.isExternallyStored })
+        }
     }
 
     func generate(_ image: ImageVersion) {

CHDataManagement/Views/Generation/GenerationContentView.swift

@@ -58,6 +58,10 @@ struct GenerationContentView: View {
                 text: "required files",
                 statusWhenNonEmpty: .nominal,
                 items: $content.results.requiredFiles) { $0.id }
+            GenerationStringIssuesView(
+                text: "external files",
+                statusWhenNonEmpty: .nominal,
+                items: $content.results.externalFiles) { $0.id }
             GenerationStringIssuesView(
                 text: "empty pages",
                 statusWhenNonEmpty: .warning,