1 files changed, 84 insertions, 0 deletions
diff --git a/ext/bg/js/anki.js b/ext/bg/js/anki.js
new file mode 100644
index 00000000..73f0d479
--- /dev/null
+++ b/ext/bg/js/anki.js
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2016  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+class AnkiConnect {
+    constructor(apiVersion) {
+        this.asyncPools = {};
+        this.apiVersion = apiVersion;
+        this.ankiConnectVer = 0;
+    }
+
+    addNote(note) {
+        return this.ankiInvokeSafe('addNote', {note}, null);
+    }
+
+    canAddNotes(notes) {
+        return this.ankiInvokeSafe('canAddNotes', {notes}, 'notes');
+    }
+
+    getDeckNames() {
+        return this.ankiInvokeSafe('deckNames', {}, null);
+    }
+
+    getModelNames() {
+        return this.ankiInvokeSafe('modelNames', {}, null);
+    }
+
+    getModelFieldNames(modelName) {
+        return this.ankiInvokeSafe('modelFieldNames', {modelName}, null);
+    }
+
+    getVersion() {
+        return this.ankiInvoke('version', {}, null);
+    }
+
+    ankiInvokeSafe(action, params, pool) {
+        if (this.ankiConnectVer === this.apiVersion) {
+            return this.ankiInvoke(action, params, pool);
+        }
+
+        return this.getVersion().then(version => {
+            if (version === this.apiVersion) {
+                return this.ankiInvoke(action, params, pool);
+            }
+
+            return null;
+        });
+    }
+
+    ankiInvoke(action, params, pool) {
+        return new Promise((resolve, reject) => {
+            if (pool !== null && this.asyncPools.hasOwnProperty(pool)) {
+                this.asyncPools[pool].abort();
+            }
+
+            const xhr = new XMLHttpRequest();
+            xhr.addEventListener('loadend', () => {
+                if (pool !== null) {
+                    delete this.asyncPools[pool];
+                }
+
+                const resp = xhr.responseText;
+                resolve(resp ? JSON.parse(resp) : null);
+            });
+
+            xhr.open('POST', 'http://127.0.0.1:8765');
+            xhr.send(JSON.stringify({action, params}));
+        });
+    }
+}