import { Router } from "express";
import type { Request } from "express";
import { graphqlClient } from "../lib/graphqlClient";
import { respondWithError } from "../lib/error";
import {
  GetTranslationDocument,
  TranslationsDocument,
  CreateTranslationDocument,
  UpdateTranslationDocument,
  DeleteTranslationDocument,
} from "../../shared/generated/graphql";

interface GqlRequest extends Request {
  gql?: typeof graphqlClient;
}

const router = Router();

// GET /api/translations/:id
router.get("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { translation } = await client.request(GetTranslationDocument, {
      id: req.params.id,
    });
    if (!translation)
      return res.status(404).json({ message: "Translation not found" });
    res.json(translation);
  } catch (error) {
    respondWithError(res, error, "Failed to fetch translation");
  }
});

// GET /api/translations
router.get("/", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { translations } = await client.request(TranslationsDocument, {
      workId: req.query.workId as string,
      language: req.query.language as string | undefined,
      limit: req.query.limit ? Number(req.query.limit) : undefined,
      offset: req.query.offset ? Number(req.query.offset) : undefined,
    });
    res.json(translations);
  } catch (error) {
    respondWithError(res, error, "Failed to fetch translations");
  }
});

// POST /api/translations
router.post("/", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { createTranslation } = await client.request(
      CreateTranslationDocument,
      {
        input: req.body,
      }
    );
    res.status(201).json(createTranslation);
  } catch (error) {
    respondWithError(res, error, "Failed to create translation");
  }
});

// PUT /api/translations/:id
router.put("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { updateTranslation } = await client.request(
      UpdateTranslationDocument,
      {
        id: req.params.id,
        input: req.body,
      }
    );
    res.json(updateTranslation);
  } catch (error) {
    respondWithError(res, error, "Failed to update translation");
  }
});

// DELETE /api/translations/:id
router.delete("/:id", async (req: GqlRequest, res) => {
  try {
    const client = req.gql || graphqlClient;
    const { deleteTranslation } = await client.request(
      DeleteTranslationDocument,
      {
        id: req.params.id,
      }
    );
    res.json({ success: deleteTranslation });
  } catch (error) {
    respondWithError(res, error, "Failed to delete translation");
  }
});

export default router;
