1 files changed, 84 insertions, 0 deletions
diff --git a/ext/bg/js/anki-connect.js b/ext/bg/js/anki-connect.js
new file mode 100644
index 00000000..9759c8f5
--- /dev/null
+++ b/ext/bg/js/anki-connect.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(server) {
+        this.server = server;
+        this.asyncPools = {};
+        this.localVersion = 2;
+        this.remoteVersion = null;
+    }
+
+    addNote(note) {
+        return this.checkVersion().then(() => this.ankiInvoke('addNote', {note}, null));
+    }
+
+    canAddNotes(notes) {
+        return this.checkVersion().then(() => this.ankiInvoke('canAddNotes', {notes}, 'notes'));
+    }
+
+    getDeckNames() {
+        return this.checkVersion().then(() => this.ankiInvoke('deckNames', {}, null));
+    }
+
+    getModelNames() {
+        return this.checkVersion().then(() => this.ankiInvoke('modelNames', {}, null));
+    }
+
+    getModelFieldNames(modelName) {
+        return this.checkVersion().then(() => this.ankiInvoke('modelFieldNames', {modelName}, null));
+    }
+
+    checkVersion() {
+        if (this.localVersion === this.remoteVersion) {
+            return Promise.resolve(true);
+        }
+
+        return this.ankiInvoke('version', {}, null).then(version => {
+            this.remoteVersion = version;
+            if (this.remoteVersion < this.localVersion) {
+                return Promise.reject('extension and plugin versions incompatible');
+            }
+        });
+    }
+
+    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];
+                }
+
+                if (xhr.responseText) {
+                    resolve(JSON.parse(xhr.responseText));
+                } else {
+                    reject('unable to connect to plugin');
+                }
+            });
+
+            xhr.open('POST', this.server);
+            xhr.send(JSON.stringify({action, params}));
+        });
+    }
+}