feat: custom pages (#994)

v2/lib/load/pages.js

@@ -1,16 +1,57 @@
 const globby = require('globby');
-const {encodePath, fileToPath} = require('./utils');
+const path = require('path');
+const {encodePath, fileToPath, idx} = require('./utils');
 
-async function loadPages(pagesDir) {
+async function loadPages({pagesDir, env, siteConfig}) {
   const pagesFiles = await globby(['**/*.js'], {
     cwd: pagesDir,
   });
 
-  const pagesMetadatas = await Promise.all(
-    pagesFiles.map(async source => ({
-      path: encodePath(fileToPath(source)),
-      source,
-    })),
+  const {baseUrl} = siteConfig;
+
+  /* Prepare metadata container */
+  const pagesMetadatas = [];
+
+  /* Translation */
+  const translationEnabled = idx(env, ['translation', 'enabled']);
+  const enabledLanguages =
+    translationEnabled && idx(env, ['translation', 'enabledLanguages']);
+  const enabledLangTags =
+    (enabledLanguages && enabledLanguages.map(lang => lang.tag)) || [];
+  const defaultLangTag = idx(env, ['translation', 'defaultLanguage', 'tag']);
+
+  await Promise.all(
+    pagesFiles.map(async relativeSource => {
+      const source = path.join(pagesDir, relativeSource);
+      const pathName = encodePath(fileToPath(relativeSource));
+      if (translationEnabled && enabledLangTags.length > 0) {
+        enabledLangTags.forEach(langTag => {
+          /* default lang should also be available. E.g: /en/users and /users is the same */
+          if (langTag === defaultLangTag) {
+            pagesMetadatas.push({
+              permalink: pathName.replace(/^\//, baseUrl),
+              language: langTag,
+              source,
+            });
+          }
+
+          const metadata = {
+            permalink: pathName.replace(/^\//, `${baseUrl}${langTag}/`),
+            language: langTag,
+            source,
+          };
+          pagesMetadatas.push(metadata);
+        });
+
+        // for defaultLanguage
+      } else {
+        const metadata = {
+          permalink: pathName.replace(/^\//, baseUrl),
+          source,
+        };
+        pagesMetadatas.push(metadata);
+      }
+    }),
   );
   return pagesMetadatas;
 }