const Catalog = require('../models/Catalog')
const mongoose = require('mongoose')
const sharp = require('sharp')
const fs = require('fs')
const {res404, res500} = require('../plugins/controllersHelperFunctions')
const {_sr} = require('../plugins/serverResponses')

// variables
const coverWidth = 390
const coverHeight = 551
const coverQuality = 100

module.exports.create = [
  async (req, res) => {
    if (!req.files || !req.files.file) return res.status(422).json({validation: {file: {msg: _sr['fa'].required.file}}})
    if (!req.files || !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}}})

    const {showInFa, showInEn, fa_title, en_title} = req.body

    const data = {
      locale: {
        fa: {
          title: fa_title
        },
        en: {
          title: en_title
        }
      },
      showInFa, showInEn
    }

    // file
    const file = req.files.file
    const fileName = 'orisoxin_catalog_' + Date.now() + '_' + file.name
    file.mv(`./static/uploads/catalogs/file/${fileName}`)
    data.file = fileName

    // cover
    const image = req.files.cover
    const imageName = 'orisoxin_catalog_cover_' + Date.now() + '.jpg'

    try {
      const target = await sharp(image.data)

      await target
         .resize(coverWidth, coverHeight, {fit: 'cover'})
         .withMetadata()
         .toFormat('jpg')
         .jpeg({quality: coverQuality})
         .toFile(`./static/uploads/catalogs/cover/${imageName}`)

      data.cover = imageName
    } catch (e) {
      return res500(res, e)
    }

    const catalog = new Catalog(data)
    catalog.save((err, data) => {
      if (err) return res500(res, err)
      return res.json(data)
    })
  }
]

module.exports.getAll = [
  (req, res) => {
    Catalog.find({}).sort({_id: -1}).exec((err, images) => {
      if (err) return res500(res, err)
      else return res.json(images)
    })
  }
]

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

module.exports.update = [
  async (req, res) => {
    const {showInFa, showInEn, fa_title, en_title} = req.body

    const data = {
      locale: {
        fa: {
          title: fa_title
        },
        en: {
          title: en_title
        }
      },
      showInFa, showInEn
    }

    if (req.files) {
      if (req.files.file) {
        const file = req.files.file
        const fileName = 'orisoxin_catalog_' + Date.now() + '_' + file.name
        file.mv(`./static/uploads/catalogs/file/${fileName}`)
        data.file = fileName
      }

      if (req.files.cover) {
        if (!_sr.supportedImageFormats.includes(req.files.cover.mimetype.split('/')[1])) return res.status(422).json({validation: {cover: {msg: _sr['fa'].format.image}}})

        const image = req.files.cover
        const imageName = 'orisoxsin_cover_' + Date.now() + '.jpg'

        try {
          const target = await sharp(image.data)
          await target
             .resize(coverWidth, coverHeight, {fit: 'cover'})
             .withMetadata()
             .toFormat('jpg')
             .jpeg({quality: coverQuality})
             .toFile(`./static/uploads/catalogs/cover/${imageName}`)

          data.cover = imageName
        } catch (e) {
          return res500(res, e)
        }
      }
    }

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

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