sync of options

services/options.js

@@ -0,0 +1,41 @@
+const sql = require('./sql');
+const utils = require('./utils');
+
+const SYNCED_OPTIONS = [ 'username', 'password_verification_hash', 'encrypted_data_key', 'encryption_session_timeout',
+    'history_snapshot_time_interval' ];
+
+async function getOption(optName) {
+    const row = await sql.getSingleResultOrNull("SELECT opt_value FROM options WHERE opt_name = ?", [optName]);
+
+    if (!row) {
+        throw new Error("Option " + optName + " doesn't exist");
+    }
+
+    return row['opt_value'];
+}
+
+async function setOptionInTransaction(optName, optValue) {
+    await sql.doInTransaction(async () => setOption(optName, optValue));
+}
+
+async function setOption(optName, optValue) {
+    if (SYNCED_OPTIONS.includes(optName)) {
+        await sql.addOptionsSync(optName);
+    }
+
+    await setOptionNoSync(optName, optValue);
+}
+
+async function setOptionNoSync(optName, optValue) {
+    const now = utils.nowTimestamp();
+
+    await sql.execute("UPDATE options SET opt_value = ?, date_modified = ? WHERE opt_name = ?", [optValue, now, optName]);
+}
+
+module.exports = {
+    getOption,
+    setOption,
+    setOptionNoSync,
+    setOptionInTransaction,
+    SYNCED_OPTIONS
+};