Music albums grouping and page

server/controllers/LibraryController.js

@@ -492,6 +492,32 @@ class LibraryController {
     res.json(payload)
   }
 
+  // api/libraries/:id/albums
+  async getAlbumsForLibrary(req, res) {
+    if (!req.library.isMusic) {
+      return res.status(400).send('Invalid library media type')
+    }
+
+    let libraryItems = this.db.libraryItems.filter(li => li.libraryId === req.library.id)
+    let albums = libraryHelpers.groupMusicLibraryItemsIntoAlbums(libraryItems)
+    albums = naturalSort(albums).asc(a => a.title) // Alphabetical by album title
+
+    const payload = {
+      results: [],
+      total: albums.length,
+      limit: req.query.limit && !isNaN(req.query.limit) ? Number(req.query.limit) : 0,
+      page: req.query.page && !isNaN(req.query.page) ? Number(req.query.page) : 0
+    }
+
+    if (payload.limit) {
+      const startIndex = payload.page * payload.limit
+      albums = albums.slice(startIndex, startIndex + payload.limit)
+    }
+
+    payload.results = albums
+    res.json(payload)
+  }
+
   async getLibraryFilterData(req, res) {
     res.json(libraryHelpers.getDistinctFilterDataNew(req.libraryItems))
   }