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

////// variables
const yearBannerWidth = 1920
const yearBannerHeight = 160
const yearBannerQuality = 100


module.exports.updateYearBanner = [
  checkSchema({
    iranFlag: {
      optional: true,
      isBoolean: true,
      errorMessage: _sr['fa'].format.boolean
    }
  }),
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({validation: errors.mapped()});

    try {
      /**
       * get data from input
       */
      const {
        iranFlag,
        electionBtn,
        hasEmail,
        hasGPlus,
        hasTweeter,
        hasInstagram,
        email,
        gPlus,
        tweeter,
        instagram
      } = req.body

      const yearBanner = await YearBanner.findOne();

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

        imageName = `mainPage_cover.jpg`;

        const target = sharp(image.data)
        await target
           .resize(yearBannerWidth, yearBannerHeight, {fit: 'cover'})
           .toFormat('jpg')
           .jpeg({quality: yearBannerQuality})
           .toFile(`./static/uploads/images/mainCover/${imageName}`);
      }

      if (yearBanner) {
        yearBanner.iranFlag = iranFlag;
        yearBanner.electionBtn = electionBtn;
        // footerOptions
        yearBanner.hasEmail = hasEmail;
        yearBanner.hasGPlus = hasGPlus;
        yearBanner.hasTweeter = hasTweeter;
        yearBanner.hasInstagram = hasInstagram;
        yearBanner.email = email;
        yearBanner.gPlus = gPlus;
        yearBanner.tweeter = tweeter;
        yearBanner.instagram = instagram;

        if (req.files?.mainCover) yearBanner.mainCover = imageName;
        yearBanner._updatedBy = req.user._id;

        await yearBanner.save();

        return res.json({message: _sr['fa'].response.success_save});
      } else {
        const data = {
          iranFlag,
          electionBtn,
          hasEmail,
          hasGPlus,
          hasTweeter,
          hasInstagram,
          email,
          gPlus,
          tweeter,
          instagram,
          _updatedBy: req.user._id
        }
        if (req.files?.mainCover) data.mainCover = imageName;
        await YearBanner.create(data);
        return res.json({message: _sr['fa'].response.success_save});
      }

    } catch (error) {
      return res500(res, `مشکلی در اجرای درخواست پیش آمده است`);
    }
  }
]

module.exports.getYearBanner = [
  async (req, res) => {
    try {
      /**
       * get getYearBanner
       */
      const getYearBanner = await YearBanner.findOne();

      /**
       * if not exist
       */
      if (!getYearBanner) return res.json({
        mainCover: '',
        iranFlag: true,
        electionBtn: true,
        hasEmail: true,
        hasGPlus: true,
        hasTweeter: true,
        hasInstagram: true,
        email: '',
        gPlus: '',
        tweeter: '',
        instagram: ''
      });

      /**
       * show result
       */
      return res.json(getYearBanner);
    } catch (error) {
      /**
       * if we got unkown error show to client
       */
      return res500(res, `مشکلی در اجرای درخواست شما پیش آمده است`);
    }
  }
]