const PartySet = require('../models/PartySet')
const {body, validationResult} = require('express-validator')
const sharp = require('sharp')
const fs = require('fs')
const {_sr} = require('../plugins/serverResponses')
const {res404, res500, checkValidations} = require('../plugins/controllersHelperFunctions')

///// variables
const foodImageWidth = 500
const foodImageHeight = 500
const foodImageQuality = 100
const limit = 20

//////////////////////////////////////////////////////////////////////////////// create
module.exports.create = [
  [
    body('title')
       .isLength({min: 2}).withMessage(_sr['fa'].min_char.min2)
       .bail()
       .custom((value, {req}) => {
         return PartySet.findOne({title: value})
            .then(item => {
              if (item) return Promise.reject(_sr['fa'].duplicated.title)
              else return true
            })
       }),

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

    body('price')
       .notEmpty().withMessage(_sr['fa'].required.price)
       .bail()
       .isNumeric().withMessage(_sr['fa'].format.number),

    body('description')
       .notEmpty().withMessage(_sr['fa'].required.description)

  ],
  checkValidations(validationResult),
  async (req, res) => {
    if (req.files?.image && !_sr.supportedImageFormats.includes(req.files.image.mimetype.split('/')[1])) return res.status(422).json({validation: {image: {msg: _sr['fa'].format.image}}})

    const {title, description, active, index} = req.body
    const data = {title, description, active, index}
    data.price = Number(req.body.price)

    if (req.files?.image) {
      const image = req.files.image
      const imageName = 'partySet_' + Date.now() + '.' + image.mimetype.split('/')[1]
      data.image = imageName
      try {
        const target = sharp(image.data)
        await target.jpeg({quality: foodImageQuality}).resize(foodImageWidth, foodImageHeight, {fit: 'cover'}).toFile(`./static/uploads/images/partySet/${imageName}`)
      } catch (e) {
        return res500(res, e)
      }
    }
    const partySet = new PartySet(data)
    partySet.save((err, data) => {
      if (err) return res500(res, err)
      return res.json({message: _sr['fa'].response.success_save})
    })
  }
]

//////////////////////////////////////////////////////////////////////////////// get all
module.exports.getAll = [
  (req, res) => {
    PartySet.find({active: true}).sort({index: 1}).exec((err, foods) => {
      if (err) return res500(res, err)
      return res.json(foods)
    })
  }
]

module.exports.getAll_for_admin = [
  (req, res) => {
    const filter = {}
    PartySet.paginate(filter, {
      page: req.query.page || 1,
      limit,
      sort : {index : 1}
    } , (err, foods) => {
      if (err) return res500(res, err)
      return res.json(foods)
    })
  }
]

//////////////////////////////////////////////////////////////////////////////// get one
module.exports.getOne = [
  (req, res) => {
    PartySet.findById(req.params.id, (err, food) => {
      if (err || !food) return res404(res, err)
      return res.json(food)
    })
  }
]

//////////////////////////////////////////////////////////////////////////////// update
module.exports.update = [
  [
    body('title')
       .isLength({min: 2}).withMessage(_sr['fa'].min_char.min2)
       .bail()
       .custom((value, {req}) => {
         return PartySet.findOne({title: value})
            .then(item => {
              if (item && item._id.toString() !== req.params.id) return Promise.reject(_sr['fa'].duplicated.title)
              else return true
            })
       }),

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

    body('price')
       .notEmpty().withMessage(_sr['fa'].required.price)
       .bail()
       .isNumeric().withMessage(_sr['fa'].format.number),

    body('description')
       .notEmpty().withMessage(_sr['fa'].required.description)

  ],
  checkValidations(validationResult),
  async (req, res) => {
    if (req.files?.image && !_sr.supportedImageFormats.includes(req.files.image.mimetype.split('/')[1])) return res.status(422).json({validation: {image: {msg: _sr['fa'].format.image}}})

    const {title, description, active, index} = req.body
    const data = {title, description, active, index}
    data.price = Number(req.body.price)

    if (req.files?.image) {
      const image = req.files.image
      const imageName = 'partySet_' + Date.now() + '.' + image.mimetype.split('/')[1]
      data.image = imageName
      try {
        const target = sharp(image.data)
        await target
           .resize(foodImageWidth, foodImageHeight, {fit: 'cover'})
           .jpeg({quality: foodImageQuality})
           .toFile(`./static/uploads/images/partySet/${imageName}`)
      } catch (e) {
        return res500(res, e)
      }
    }

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

//////////////////////////////////////////////////////////////////////////////// delete
module.exports.delete = [
  (req, res) => {
    PartySet.findByIdAndRemove(req.params.id, (err, data) => {
      if (err || !data) return res404(res, err)
      if (data.image) {
        fs.unlink(`./static/${data.image}`, err => {
          if (err) console.log(err)
        })
      }
      return res.json({message: _sr['fa'].response.success_remove})
    })
  }
]