Add id to the metadata json and use it when moving files if ino cannot be matched

server/models/LibraryItem.js

@@ -574,6 +574,7 @@ class LibraryItem extends Model {
     let jsonObject = {}
     if (this.mediaType === 'book') {
       jsonObject = {
+        absId: this.id,
         tags: mediaExpanded.tags || [],
         chapters: mediaExpanded.chapters?.map((c) => ({ ...c })) || [],
         title: mediaExpanded.title,
@@ -598,6 +599,7 @@ class LibraryItem extends Model {
       }
     } else {
       jsonObject = {
+        absId: this.id,
         tags: mediaExpanded.tags || [],
         title: mediaExpanded.title,
         author: mediaExpanded.author,

server/scanner/BookScanner.js

@@ -821,6 +821,7 @@ class BookScanner {
     const metadataFilePath = Path.join(metadataPath, `metadata.${global.ServerSettings.metadataFileFormat}`)
 
     const jsonObject = {
+      absId: libraryItem.id,
       tags: libraryItem.media.tags || [],
       chapters: libraryItem.media.chapters?.map((c) => ({ ...c })) || [],
       title: libraryItem.media.title,

server/scanner/LibraryScanner.js

@@ -14,6 +14,7 @@ const LibraryItemScanner = require('./LibraryItemScanner')
 const LibraryScan = require('./LibraryScan')
 const LibraryItemScanData = require('./LibraryItemScanData')
 const Task = require('../objects/Task')
+const abmetadataGenerator = require('../utils/generators/abmetadataGenerator')
 
 class LibraryScanner {
   constructor() {
@@ -574,7 +575,7 @@ class LibraryScanner {
       let updatedLibraryItemDetails = {}
       if (!existingLibraryItem) {
         const isSingleMedia = isSingleMediaFile(fileUpdateGroup, itemDir)
-        existingLibraryItem = (await findLibraryItemByItemToItemInoMatch(library.id, fullPath)) || (await findLibraryItemByItemToFileInoMatch(library.id, fullPath, isSingleMedia)) || (await findLibraryItemByFileToItemInoMatch(library.id, fullPath, isSingleMedia, fileUpdateGroup[itemDir]))
+        existingLibraryItem = (await findLibraryItemByItemToItemInoMatch(library.id, fullPath)) || (await findLibraryItemByItemToFileInoMatch(library.id, fullPath, isSingleMedia)) || (await findLibraryItemByFileToItemInoMatch(library.id, fullPath, isSingleMedia, fileUpdateGroup[itemDir])) || (await findLibraryItemByItemToMetadata(fullPath, isSingleMedia))
         if (existingLibraryItem) {
           // Update library item paths for scan
           existingLibraryItem.path = fullPath
@@ -709,3 +710,14 @@ async function findLibraryItemByFileToItemInoMatch(libraryId, fullPath, isSingle
   if (existingLibraryItem) Logger.debug(`[LibraryScanner] Found library item with inode matching one of "${itemFileInos.join(',')}" at path "${existingLibraryItem.path}"`)
   return existingLibraryItem
 }
+
+async function findLibraryItemByItemToMetadata(fullPath, isSingleMedia) {
+  if (isSingleMedia) return null
+  const metadataText = await fileUtils.readTextFile(Path.join(fullPath, 'metadata.json'))
+  if (!metadataText) return null
+  const abMetadata = abmetadataGenerator.parseJson(metadataText) || {}
+  // check if metadata id exists in the database
+  const existingLibraryItem = await Database.libraryItemModel.getExpandedById(abMetadata.absId)
+  if (existingLibraryItem) Logger.debug(`[LibraryScanner] Found library item with metadata id matching one of "${abMetadata.absId}" at path "${existingLibraryItem.path}"`)
+  return existingLibraryItem
+}

server/scanner/PodcastScanner.js

@@ -421,6 +421,7 @@ class PodcastScanner {
     const metadataFilePath = Path.join(metadataPath, `metadata.${global.ServerSettings.metadataFileFormat}`)
 
     const jsonObject = {
+      absId: libraryItem.id,
       tags: libraryItem.media.tags || [],
       title: libraryItem.media.title,
       author: libraryItem.media.author,