Write metadata file option, rate limiting login attempts, generic failed login message

server/Scanner.js

@@ -13,6 +13,8 @@ class Scanner {
   constructor(AUDIOBOOK_PATH, METADATA_PATH, db, emitter) {
     this.AudiobookPath = AUDIOBOOK_PATH
     this.MetadataPath = METADATA_PATH
+    this.BookMetadataPath = Path.join(this.MetadataPath, 'books')
+
     this.db = db
     this.emitter = emitter
 
@@ -387,6 +389,39 @@ class Scanner {
     }
   }
 
+  async saveMetadata(audiobookId) {
+    if (audiobookId) {
+      var audiobook = this.db.audiobooks.find(ab => ab.id === audiobookId)
+      if (!audiobook) {
+        return {
+          error: 'Audiobook not found'
+        }
+      }
+      var savedPath = await audiobook.writeNfoFile()
+      return {
+        audiobookId,
+        audiobookTitle: audiobook.title,
+        savedPath
+      }
+    } else {
+      var response = {
+        success: 0,
+        failed: 0
+      }
+      for (let i = 0; i < this.db.audiobooks.length; i++) {
+        var audiobook = this.db.audiobooks[i]
+        var savedPath = await audiobook.writeNfoFile()
+        if (savedPath) {
+          Logger.info(`[Scanner] Saved metadata nfo ${savedPath}`)
+          response.success++
+        } else {
+          response.failed++
+        }
+      }
+      return response
+    }
+  }
+
   async find(req, res) {
     var method = req.params.method
     var query = req.query