Fix links to external pages

Sources/Generator/Content/Element.swift

@@ -289,16 +289,23 @@ struct Element {
         self.readElements(in: folder, source: path, log: log)
     }
 
-    func getContainedIds(log: MetadataInfoLogger) -> [String : String] {
-        elements.reduce(into: [id : path]) { dict, element in
-            element.getContainedIds(log: log).forEach { id, path in
-                if let existing = dict[id] {
-                    log.error("Conflicting id with \(existing)", source: path)
-                } else {
-                    dict[id] = path
-                }
+    func getExternalPageMap(language: String) -> [String : String] {
+        var result = [String : String]()
+        if let ext = getExternalLink(for: language) {
+            result[id] = ext
+        } else {
+            result[id] = path + Element.htmlPagePathAddition(for: language)
+        }
+        elements.forEach { element in
+            element.getExternalPageMap(language: language).forEach { key, value in
+                result[key] = value
             }
         }
+        return result
+    }
+
+    private func getExternalLink(for language: String) -> String? {
+        languages.first { $0.language == language }?.externalUrl
     }
 }
 
@@ -381,6 +388,9 @@ extension Element {
      - Returns: The relative url from a localized page of the element to the target file.
      */
     func relativePathToOtherSiteElement(file: String) -> String {
+        guard !file.hasPrefix("/") else {
+            return file
+        }
         // Note: The element `path` is missing the last component
         // i.e. travel/alps instead of travel/alps/en.html
         let ownParts = path.components(separatedBy: "/")

Sources/Generator/Generators/PageContentGenerator.swift

@@ -47,13 +47,12 @@ struct PageContentGenerator {
         let file = markdown.between("(", and: ")")
         if file.hasPrefix("page:") {
             let pageId = file.replacingOccurrences(of: "page:", with: "")
-            guard let pagePath = results.getPagePath(for: pageId, source: page.path) else {
+            guard let pagePath = results.getPagePath(for: pageId, source: page.path, language: language) else {
                 // Remove link since the page can't be found
                 return markdown.between("[", and: "]")
             }
-            let fullPath = pagePath + Element.htmlPagePathAddition(for: language)
             // Adjust file path to get the page url
-            let url = page.relativePathToOtherSiteElement(file: fullPath)
+            let url = page.relativePathToOtherSiteElement(file: pagePath)
             return html.replacingOccurrences(of: file, with: url)
         }
 
@@ -244,7 +243,7 @@ struct PageContentGenerator {
     private func handlePageLink(page: Element, language: String, pageId: String) -> String {
         guard let linkedPage = siteRoot.find(pageId) else {
             // Checking the page path will add it to the missing pages
-            _ = results.getPagePath(for: pageId, source: page.path)
+            _ = results.getPagePath(for: pageId, source: page.path, language: language)
             // Remove link since the page can't be found
             return ""
         }

Sources/Generator/Processing/GenerationResultsHandler.swift

@@ -8,6 +8,8 @@ enum MinificationType {
     case css
 }
 
+typealias PageMap = [(language: String, pages: [String : String])]
+
 final class GenerationResultsHandler {
 
     /// The content folder where the input data is stored
@@ -23,7 +25,7 @@ final class GenerationResultsHandler {
 
      This relation is used to generate relative links to pages using the ``Element.id`
      */
-    private let pagePaths: [String: String]
+    private let pageMap: PageMap
 
     private let configuration: Configuration
 
@@ -31,11 +33,11 @@ final class GenerationResultsHandler {
 
     private let numberOfTotalPages: Int
 
-    init(in input: URL, to output: URL, configuration: Configuration, fileUpdates: FileUpdateChecker, pagePaths: [String: String], pageCount: Int) {
+    init(in input: URL, to output: URL, configuration: Configuration, fileUpdates: FileUpdateChecker, pageMap: PageMap, pageCount: Int) {
         self.contentFolder = input
         self.fileUpdates = fileUpdates
         self.outputFolder = output
-        self.pagePaths = pagePaths
+        self.pageMap = pageMap
         self.configuration = configuration
         self.numberOfTotalPages = pageCount
     }
@@ -86,8 +88,8 @@ final class GenerationResultsHandler {
 
     // MARK: Page data
 
-    func getPagePath(for id: String, source: String) -> String? {
-        guard let pagePath = pagePaths[id] else {
+    func getPagePath(for id: String, source: String, language: String) -> String? {
+        guard let pagePath = pageMap.first(where: { $0.language == language})?.pages[id] else {
             missingLinkedPages[id] = source
             return nil
         }

Sources/Generator/run.swift

@@ -31,7 +31,7 @@ private func loadConfiguration(at configPath: String) -> Configuration? {
     return config
 }
 
-private func loadSiteData(in folder: URL, runFolder: URL) throws -> (root: Element, ids: [String : String])? {
+private func loadSiteData(in folder: URL, runFolder: URL) throws -> (root: Element, pageMap: PageMap)? {
     print("--- SOURCE FILES -----------------------------------")
     print("                                                    ")
 
@@ -48,22 +48,22 @@ private func loadSiteData(in folder: URL, runFolder: URL) throws -> (root: Eleme
         print("                Error: No site root loaded, aborting generation")
         return nil
     }
-    let ids = root.getContainedIds(log: log)
+    let pageMap = root.languages.map { (language: $0.language, pages: root.getExternalPageMap(language: $0.language)) }
     log.printMetadataScanOverview(languages: root.languages.count)
-    return (root, ids)
+    return (root, pageMap)
 }
 
-private func generatePages(from root: Element, configuration: Configuration, fileUpdates: FileUpdateChecker, ids: [String: String], runFolder: URL) -> (ImageData, FileData)? {
+private func generatePages(from root: Element, configuration: Configuration, fileUpdates: FileUpdateChecker, pageMap: PageMap, runFolder: URL) -> (ImageData, FileData)? {
     print("--- GENERATION -------------------------------------")
     print("                                                    ")
 
-    let pageCount = ids.count * root.languages.count
+    let pageCount = pageMap.reduce(0) { $0 + $1.pages.count }
     let results = GenerationResultsHandler(
         in: configuration.contentDirectory,
         to: configuration.outputDirectory,
         configuration: configuration,
         fileUpdates: fileUpdates,
-        pagePaths: ids,
+        pageMap: pageMap,
         pageCount: pageCount)
 
     defer { results.printOverview() }
@@ -149,7 +149,7 @@ private func generate(configPath: String) throws {
     let runFolder = configuration.contentDirectory.appendingPathComponent("run")
 
     // 2. Scan site elements
-    guard let (siteRoot, ids) = try loadSiteData(in: configuration.contentDirectory, runFolder: runFolder) else {
+    guard let (siteRoot, pageMap) = try loadSiteData(in: configuration.contentDirectory, runFolder: runFolder) else {
         return
     }
 
@@ -165,7 +165,7 @@ private func generate(configPath: String) throws {
 
     // 3. Generate pages
 
-    guard let (images, files) = generatePages(from: siteRoot, configuration: configuration, fileUpdates: fileUpdates, ids: ids, runFolder: runFolder) else {
+    guard let (images, files) = generatePages(from: siteRoot, configuration: configuration, fileUpdates: fileUpdates, pageMap: pageMap, runFolder: runFolder) else {
         return
     }