use asciiOnlyToLowerCase to match lower function behaviour of SQLite

server/models/Author.js

@@ -1,5 +1,6 @@
 const { DataTypes, Model, where, fn, col } = require('sequelize')
 const parseNameString = require('../utils/parsers/parseNameString')
+const { asciiOnlyToLowerCase } = require('../utils/index')
 
 class Author extends Model {
   constructor(values, options) {
@@ -53,27 +54,15 @@ class Author extends Model {
    * @returns {Promise<Author>}
    */
   static async getByNameAndLibrary(authorName, libraryId) {
-    const containsOnlyASCII = /^[\u0000-\u007f]*$/.test(authorName)
-
-    // SQLite does not support lower with non-Unicode chars
-    if (!containsOnlyASCII) {
-      return this.findOne({
-        where: {
-          name: authorName,
-          libraryId: libraryId
-        }
-      })
-    } else {
     return this.findOne({
       where: [
-          where(fn('lower', col('name')), authorName.toLowerCase()),
+        where(fn('lower', col('name')), asciiOnlyToLowerCase(authorName)),
         {
           libraryId
         }
       ]
     })
   }
-  }
 
   /**
    *

server/models/Series.js

@@ -1,6 +1,7 @@
 const { DataTypes, Model, where, fn, col } = require('sequelize')
 
 const { getTitlePrefixAtEnd } = require('../utils/index')
+const { asciiOnlyToLowerCase } = require('../utils/index')
 
 class Series extends Model {
   constructor(values, options) {
@@ -39,27 +40,15 @@ class Series extends Model {
    * @returns {Promise<Series>}
    */
   static async getByNameAndLibrary(seriesName, libraryId) {
-    const containsOnlyASCII = /^[\u0000-\u007f]*$/.test(authorName)
-
-    // SQLite does not support lower with non-Unicode chars
-    if (!containsOnlyASCII) {
-      return this.findOne({
-        where: {
-          name: seriesName,
-          libraryId: libraryId
-        }
-      })
-    } else {
     return this.findOne({
       where: [
-          where(fn('lower', col('name')), seriesName.toLowerCase()),
+        where(fn('lower', col('name')), asciiOnlyToLowerCase(seriesName)),
         {
           libraryId
         }
       ]
     })
   }
-  }
 
   /**
    * Initialize model