'use strict';

const express = require('express');
const router = express.Router();
const shoppingService = require('../services/shoppingService');
const { authenticate } = require('../middleware/authenticate');
const { validate } = require('../utils/validate');
const {
  createShoppingListSchema,
  addShoppingListItemSchema,
  updateShoppingListItemSchema,
  addRecipesToListSchema,
} = require('../utils/validation');

// All shopping list routes require authentication
router.use(authenticate);

// GET /v1/shopping-lists
router.get('/', async (req, res, next) => {
  try {
    const lists = await shoppingService.getShoppingLists(req.user.sub);
    return res.status(200).json({
      shopping_lists: lists,
      synced_at: new Date().toISOString(),
    });
  } catch (err) {
    return next(err);
  }
});

// POST /v1/shopping-lists
router.post('/', async (req, res, next) => {
  try {
    const data = validate(createShoppingListSchema, req.body);
    const list = await shoppingService.createShoppingList(req.user.sub, data);
    return res.status(201).json({ shopping_list: list });
  } catch (err) {
    return next(err);
  }
});

// GET /v1/shopping-lists/:list_id
router.get('/:list_id', async (req, res, next) => {
  try {
    const list = await shoppingService.getShoppingListById(
      req.user.sub,
      req.params.list_id
    );
    return res.status(200).json({
      shopping_list: list,
      synced_at: new Date().toISOString(),
    });
  } catch (err) {
    return next(err);
  }
});

// DELETE /v1/shopping-lists/:list_id
router.delete('/:list_id', async (req, res, next) => {
  try {
    await shoppingService.deleteShoppingList(req.user.sub, req.params.list_id);
    return res.status(204).send();
  } catch (err) {
    return next(err);
  }
});

// POST /v1/shopping-lists/:list_id/items
router.post('/:list_id/items', async (req, res, next) => {
  try {
    const data = validate(addShoppingListItemSchema, req.body);
    const result = await shoppingService.addItemToList(
      req.user.sub,
      req.params.list_id,
      data
    );
    return res.status(201).json(result);
  } catch (err) {
    return next(err);
  }
});

// POST /v1/shopping-lists/:list_id/add-recipes
router.post('/:list_id/add-recipes', async (req, res, next) => {
  try {
    const data = validate(addRecipesToListSchema, req.body);
    const result = await shoppingService.addRecipesToList(
      req.user.sub,
      req.params.list_id,
      data
    );
    return res.status(201).json(result);
  } catch (err) {
    return next(err);
  }
});

// PUT /v1/shopping-lists/:list_id/items/:item_id
router.put('/:list_id/items/:item_id', async (req, res, next) => {
  try {
    const data = validate(updateShoppingListItemSchema, req.body);
    const item = await shoppingService.updateListItem(
      req.user.sub,
      req.params.list_id,
      req.params.item_id,
      data
    );
    return res.status(200).json({ item });
  } catch (err) {
    return next(err);
  }
});

// DELETE /v1/shopping-lists/:list_id/items/:item_id
router.delete('/:list_id/items/:item_id', async (req, res, next) => {
  try {
    await shoppingService.deleteListItem(
      req.user.sub,
      req.params.list_id,
      req.params.item_id
    );
    return res.status(204).send();
  } catch (err) {
    return next(err);
  }
});

module.exports = router;