Anki findNotes (#2152)

* Add findNotes API

* Add api.findAnkiNotes

ext/js/background/backend.js

@@ -129,7 +129,8 @@ class Backend {
             ['triggerDatabaseUpdated',       {async: false, contentScript: true,  handler: this._onApiTriggerDatabaseUpdated.bind(this)}],
             ['testMecab',                    {async: true,  contentScript: true,  handler: this._onApiTestMecab.bind(this)}],
             ['textHasJapaneseCharacters',    {async: false, contentScript: true,  handler: this._onApiTextHasJapaneseCharacters.bind(this)}],
-            ['getTermFrequencies',           {async: true,  contentScript: true,  handler: this._onApiGetTermFrequencies.bind(this)}]
+            ['getTermFrequencies',           {async: true,  contentScript: true,  handler: this._onApiGetTermFrequencies.bind(this)}],
+            ['findAnkiNotes',                {async: true,  contentScript: true,  handler: this._onApiFindAnkiNotes.bind(this)}]
         ]);
         this._messageHandlersWithProgress = new Map([
         ]);
@@ -752,6 +753,10 @@ class Backend {
         return await this._translator.getTermFrequencies(termReadingList, dictionaries);
     }
 
+    async _onApiFindAnkiNotes({query}) {
+        return await this._anki.findNotes(query);
+    }
+
     // Command handlers
 
     async _onCommandOpenSearchPage(params) {

ext/js/comm/anki.js

@@ -120,6 +120,18 @@ class AnkiConnect {
         return await this._invoke('storeMediaFile', {filename: fileName, data: content});
     }
 
+    /**
+     * Finds notes matching a query.
+     * @param {string} query Searches for notes matching a query.
+     * @returns {number[]} An array of note IDs.
+     * @see https://docs.ankiweb.net/searching.html
+     */
+    async findNotes(query) {
+        if (!this._enabled) { return []; }
+        await this._checkVersion();
+        return await this._invoke('findNotes', {query});
+    }
+
     async findNoteIds(notes) {
         if (!this._enabled) { return []; }
         await this._checkVersion();

ext/js/comm/api.js

@@ -172,6 +172,10 @@ class API {
         return this._invoke('getTermFrequencies', {termReadingList, dictionaries});
     }
 
+    findAnkiNotes(query) {
+        return this._invoke('findAnkiNotes', {query});
+    }
+
     // Utilities
 
     _createActionPort(timeout=5000) {