Add new api to change name and password

routes/api/user/change_name.ts

@@ -0,0 +1,42 @@
+import { Handlers } from "$fresh/server.ts";
+import { User } from "../../../db.ts";
+import { get_task_manager } from "../../../server.ts";
+import { get_string } from "../../../server/parse_form.ts";
+import { BUser } from "../../../server/user.ts";
+import { return_data, return_error } from "../../../server/utils.ts";
+
+export const handler: Handlers = {
+    async POST(req, ctx) {
+        const user = <User | undefined> ctx.state.user;
+        if (!user) {
+            return return_error(403, "Permission denied.");
+        }
+        let d: FormData | null = null;
+        try {
+            d = await req.formData();
+        } catch (_) {
+            return return_error(1, "Invalid parameters.");
+        }
+        const username = await get_string(d.get("username"));
+        if (!username) return return_error(2, "User name not specified.");
+        if (user.username == username) {
+            return return_error(3, "Name not changed.");
+        }
+        const m = get_task_manager();
+        const u = m.db.get_user_by_name(username);
+        if (u) {
+            return return_error(
+                4,
+                "User name is already used by other user, please use another name.",
+            );
+        }
+        user.username = username;
+        m.db.update_user(user);
+        return return_data<BUser>({
+            id: user.id,
+            is_admin: user.is_admin,
+            permissions: user.permissions,
+            username: user.username,
+        });
+    },
+};