import { Router } from "express";
import type { Request } from "express";
import { graphqlClient } from "../lib/graphqlClient";
import { respondWithError } from "../lib/error";
import {
  GetUserDocument,
  UsersDocument,
  UpdateUserDocument,
  DeleteUserDocument,
  type GetUserQuery,
  type UsersQuery,
  type UpdateUserMutation,
  type DeleteUserMutation,
} from "../../shared/generated/graphql";

const router = Router();

// GET /api/users/:id
interface GqlRequest extends Request {
  gql?: typeof graphqlClient;
}

router.get("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { user } = await client.request<GetUserQuery>(GetUserDocument, {
      id: req.params.id,
    });
    res.json(user);
  } catch (error) {
    respondWithError(res, error, "Failed to fetch user");
  }
});

// GET /api/users
router.get("/", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { users } = await client.request<UsersQuery>(UsersDocument, {
      ...req.query,
    });
    res.json(users);
  } catch (error) {
    respondWithError(res, error, "Failed to fetch users");
  }
});

// PUT /api/users/:id
router.put("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { updateUser } = await client.request<UpdateUserMutation>(
      UpdateUserDocument,
      {
        id: req.params.id,
        input: req.body,
      }
    );
    res.json(updateUser);
  } catch (error) {
    respondWithError(res, error, "Failed to update user");
  }
});

// DELETE /api/users/:id
router.delete("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { deleteUser } = await client.request<DeleteUserMutation>(
      DeleteUserDocument,
      {
        id: req.params.id,
      }
    );
    res.json({ success: deleteUser });
  } catch (error) {
    respondWithError(res, error, "Failed to delete user");
  }
});

export default router;