const FoodCategory = require('../models/FoodCategory')
const Food = require('../models/Food')
const MenuType = require('../models/MenuType')
const {body, validationResult} = require('express-validator')
const {_sr} = require('../plugins/serverResponses')
const {res404, res500, checkValidations} = require('../plugins/controllersHelperFunctions')
const fs = require('fs')
const sharp = require('sharp')
const StoreInfo = require("../models/StoreInfo");

// variables
const coverWidth = 500
const coverHeight = 500
const coverQuality = 100
const limit = 20

module.exports.create = [
  [
    body('index')
       .notEmpty().withMessage(_sr['fa'].required.index)
       .bail()
       .isNumeric().withMessage(_sr['fa'].format.number),

    body('name')
       .notEmpty().withMessage(_sr['fa'].required.name)
       .bail()
       .custom((value, {req}) => {
         return FoodCategory.findOne({name: value, branchId: req?.body?.branchId})
            .then(foodCategory => {
              if (foodCategory) return Promise.reject(_sr['fa'].duplicated.name)
              else return true
            })
       }),

    body('type')
       .notEmpty().withMessage('نوع منو را انتخاب کنید')
       .bail()
       .custom((value, {req}) => {
         return MenuType.findOne({_id: value})
            .then(menuType => {
              if (!menuType) return Promise.reject(_sr['fa'].not_found.item_id)
              else return true
            })
       }),

    body('branchId')
        .notEmpty().withMessage(_sr['fa'].required.field)
        .bail()
        .custom((value, {req}) => {
          return StoreInfo.findOne({_id: value})
              .then(store => {
                if (!store) return Promise.reject(_sr['fa'].not_found.item_id)
                else return true
              })
        })
  ],
  checkValidations(validationResult),
  async (req, res) => {
    if (!req.files?.cover) return res.status(422).json({validation: {cover: {msg: _sr['fa'].required.cover}}})
    if (!_sr.supportedImageFormats.includes(req.files.cover.mimetype.split('/')[1])) return res.status(422).json({validation: {cover: {msg: _sr['fa'].format.image}}})
    try {
      const {name, type, index , branchId} = req.body
      const data = {name, type, index , branchId}

      const cover = req.files.cover
      const coverName = 'category_' + Date.now() + '.png'
      data.cover = coverName

      const target = await sharp(cover.data)
      await target
         .resize(coverWidth, coverHeight, {fit: 'cover'})
         .toFormat('png')
         .png({quality: coverQuality})
         .toFile(`./static/uploads/images/foodCategories/${coverName}`)

      const foodCategory = new FoodCategory(data)
      foodCategory.save(err => {
        if (err) return res500(res, err)
        else return res.json({message: _sr['fa'].response.success_save})
      })
    } catch (e) {
      return res500(res, e)
    }
  }
]

module.exports.get_all_for_panel = [
  (req, res) => {
    const filter = {branchId: req?.params?.branchId}
    FoodCategory.paginate(filter, {
      page: req.query.page || 1,
      limit,
      populate : 'type',
      sort : {index : 1}
    } , (err, data) => {
      if (err) return res500(res, err)
      else return res.json(data)
    })
  }
]

module.exports.get_all_for_web = [
  (req, res) => {
    const branchId = req?.params?.branchId
      const query = {}
      if (branchId) query.branchId = branchId
    FoodCategory.find(query).populate('type').sort({index: 1}).exec((err, data) => {
      if (err) return res500(res, err)
      else return res.json(data)
    })
  }
]

module.exports.get_one = [
  (req, res) => {
    FoodCategory.findById(req.params.id, (err, data) => {
      if (err || !data) return res404(res, err)
      else return res.json(data)
    })
  }
]

module.exports.update = [
  [
    body('index')
       .notEmpty().withMessage(_sr['fa'].required.index)
       .bail()
       .isNumeric().withMessage(_sr['fa'].format.number),

    body('name')
       .notEmpty().withMessage(_sr['fa'].required.name)
       .bail()
       .custom((value, {req}) => {
         return FoodCategory.findOne({name: value, branchId: req?.body?.branchId})
            .then(foodCategory => {
              if (foodCategory && foodCategory._id.toString() !== req.params.id) return Promise.reject(_sr['fa'].duplicated.name)
              else return true
            })
       }),

    body('type')
       .notEmpty().withMessage('نوع منو را انتخاب کنید')
       .bail()
       .custom((value, {req}) => {
         return MenuType.findOne({_id: value})
            .then(menuType => {
              if (!menuType) return Promise.reject(_sr['fa'].not_found.item_id)
              else return true
            })
       }),

    body('branchId')
        .notEmpty().withMessage(_sr['fa'].required.field)
        .bail()
        .custom((value, {req}) => {
          return StoreInfo.findOne({_id: value})
              .then(store => {
                if (!store) return Promise.reject(_sr['fa'].not_found.item_id)
                else return true
              })
        })
  ],
  checkValidations(validationResult),
  async (req, res) => {
    if (req.files?.cover && !_sr.supportedImageFormats.includes(req.files.cover.mimetype.split('/')[1])) return res.status(422).json({validation: {cover: {msg: _sr['fa'].format.image}}})

    try {
      const {name, type, index , branchId} = req.body
      const data = {name, type, index, branchId}

      if (req.files?.cover) {
        const cover = req?.files?.cover
        const coverName = 'category_' + Date.now() + '.png'
        data.cover = coverName

        const target = await sharp(cover.data)
        await target
           .resize(coverWidth, coverHeight, {fit: 'cover'})
           .toFormat('png')
           .png({quality: coverQuality})
           .toFile(`./static/uploads/images/foodCategories/${coverName}`)
      }


      FoodCategory.findByIdAndUpdate(req.params.id, data, (err, oldData) => {
        if (err || !oldData) return res404(res, err)
        if (req.files?.cover) {
          fs.unlink(`./static/${oldData.cover}`, err => {
            if (err) console.log(err)
          })
        }
        return res.json({message: _sr['fa'].response.success_save})
      })

    } catch (e) {
      return res500(res, e)
    }
  }
]

module.exports.delete = [
  (req, res) => {
    Food.findOne({category: req.params.id}, (err, food) => {
      if (err) return res500(res, err)
      if (food) return res.status(403).json({message: 'نمیتوان دسته بندی هایی که دارای زیر مجموعه هستند را حذف کرد.'})
      else {
        FoodCategory.findByIdAndDelete(req.params.id, (err, data) => {
          if (err || !data) return res404(res, err)
          else return res.json({message: _sr['fa'].response.success_remove})
        })
      }
    })
  }
]

////////////////////////////////////////////// user