1 files changed, 41 insertions, 0 deletions
diff --git a/src/api/endpoints/username/available.js b/src/api/endpoints/username/available.js
new file mode 100644
index 0000000000..a93637bc1f
--- /dev/null
+++ b/src/api/endpoints/username/available.js
@@ -0,0 +1,41 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import User from '../../models/user';
+import { validateUsername } from '../../models/user';
+
+/**
+ * Check available username
+ *
+ * @param {Object} params
+ * @return {Promise<object>}
+ */
+module.exports = async (params) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'username' parameter
+	const username = params.username;
+	if (username == null || username == '') {
+		return rej('username-is-required');
+	}
+
+	// Validate username
+	if (!validateUsername(username)) {
+		return rej('invalid-username');
+	}
+
+	// Get exist
+	const exist = await User
+		.count({
+			username_lower: username.toLowerCase()
+		}, {
+			limit: 1
+		});
+
+	// Reply
+	res({
+		available: exist === 0
+	});
+});