Fix multiple bugs

server/models/Author.js

@@ -50,16 +50,18 @@ class Author extends Model {
    *
    * @param {string} authorName
    * @param {string} libraryId
+   * @param {import('sequelize').Transaction} [transaction]
    * @returns {Promise<Author>}
    */
-  static async getByNameAndLibrary(authorName, libraryId) {
+  static async getByNameAndLibrary(authorName, libraryId, transaction = null) {
     return this.findOne({
       where: [
         where(fn('lower', col('name')), authorName.toLowerCase()),
         {
           libraryId
         }
-      ]
+      ],
+      transaction
     })
   }
 
@@ -111,16 +113,20 @@ class Author extends Model {
    *
    * @param {string} name
    * @param {string} libraryId
+   * @param {import('sequelize').Transaction} [transaction]
    * @returns {Promise<Author>}
    */
-  static async findOrCreateByNameAndLibrary(name, libraryId) {
-    const author = await this.getByNameAndLibrary(name, libraryId)
+  static async findOrCreateByNameAndLibrary(name, libraryId, transaction = null) {
+    const author = await this.getByNameAndLibrary(name, libraryId, transaction)
     if (author) return author
-    return this.create({
-      name,
-      lastFirst: this.getLastFirst(name),
-      libraryId
-    })
+    return this.create(
+      {
+        name,
+        lastFirst: this.getLastFirst(name),
+        libraryId
+      },
+      { transaction }
+    )
   }
 
   /**

server/models/BookAuthor.js

@@ -27,13 +27,15 @@ class BookAuthor extends Model {
    * Get number of books for author
    *
    * @param {string} authorId
+   * @param {import('sequelize').Transaction} [transaction]
    * @returns {Promise<number>}
    */
-  static getCountForAuthor(authorId) {
+  static getCountForAuthor(authorId, transaction = null) {
     return this.count({
       where: {
         authorId
-      }
+      },
+      transaction
     })
   }
 

server/models/Series.js

@@ -41,16 +41,18 @@ class Series extends Model {
    *
    * @param {string} seriesName
    * @param {string} libraryId
+   * @param {import('sequelize').Transaction} [transaction]
    * @returns {Promise<Series>}
    */
-  static async getByNameAndLibrary(seriesName, libraryId) {
+  static async getByNameAndLibrary(seriesName, libraryId, transaction = null) {
     return this.findOne({
       where: [
         where(fn('lower', col('name')), seriesName.toLowerCase()),
         {
           libraryId
         }
-      ]
+      ],
+      transaction
     })
   }
 
@@ -70,16 +72,20 @@ class Series extends Model {
    *
    * @param {string} seriesName
    * @param {string} libraryId
+   * @param {import('sequelize').Transaction} [transaction]
    * @returns {Promise<Series>}
    */
-  static async findOrCreateByNameAndLibrary(seriesName, libraryId) {
-    const series = await this.getByNameAndLibrary(seriesName, libraryId)
+  static async findOrCreateByNameAndLibrary(seriesName, libraryId, transaction = null) {
+    const series = await this.getByNameAndLibrary(seriesName, libraryId, transaction)
     if (series) return series
-    return this.create({
-      name: seriesName,
-      nameIgnorePrefix: getTitleIgnorePrefix(seriesName),
-      libraryId
-    })
+    return this.create(
+      {
+        name: seriesName,
+        nameIgnorePrefix: getTitleIgnorePrefix(seriesName),
+        libraryId
+      },
+      { transaction }
+    )
   }
 
   /**