const {body, validationResult} = require('express-validator');
const mongoose = require('mongoose');
const sharp = require('sharp');
const {_sr} = require('../plugins/serverResponses');
const allPortals = require('../plugins/portals');
const {res404, res500} = require('../plugins/controllersHelperFunctions');
const fs = require('fs');
const moment = require('moment-jalaali');
const axios = require('axios');

const HomePage = require('../models/HomePage');
const News = require('./../models/News');
const Gallery = require('./../models/Gallery');
const Category = require('./../models/Category');
const NewsFile = require('./../models/NewsFile');
const Slider = require('./../models/Slider');
const Links = require('./../models/Links');
const Content = require('./../models/Content');
const Occasion = require('./../models/Occasion');

/////////////////////////////////////////////////////// admin

module.exports.updateHomePage = [
  async (req, res) => {
    try {
      const {
        s2,
        s3,
        s4,
        s5,
        s6,
        s2Side,
        s3Side,
        s4Side,
        s5Side,
        s6Side
      } = req.body;

      const portal = req.query.portal ? 'ostandari' : req.query.portal;

      if (!req.user.portals.includes(portal)) {
        return res.status(403).json({message: `شما اجازه دسترسی به اطلاعات این صفحه را ندارید`});
      }

      if (!allPortals.some(item => item.value === portal)) {
        return res.status(403).json(`پرتال ارسال شده وجود ندارد`);
      }

      const addHome = await HomePage.findOne({modelType: portal});
      if (addHome) {
        const oldData = addHome
        oldData.s2 = s2 || null
        oldData.s3 = s3 || null
        oldData.s4 = s4 || null
        oldData.s5 = s5 || null
        oldData.s6 = s6 || null
        // side bar
        oldData.s2Side = s2Side || null
        oldData.s3Side = s3Side || null
        oldData.s4Side = s4Side || null
        oldData.s5Side = s5Side || null
        oldData.s6Side = s6Side || null
        await oldData.save();

        return res.json({message: _sr['fa'].response.success_save})
      } else {
        const data = {
          s2: s2 || null,
          s3: s3 || null,
          s4: s4 || null,
          s5: s5 || null,
          s6: s6 || null,
          s2Side: s2Side || null,
          s3Side: s3Side || null,
          s4Side: s4Side || null,
          s5Side: s5Side || null,
          s6Side: s6Side || null,
          modelType: portal
        }

        const addHome = await HomePage.create(data);

        if (!addHome) return res500(res, `مشکلی در اجرای درخواست شما به وجود آمده است`);

        return res.json({message: _sr['fa'].response.success_save})
      }

    } catch (e) {
      console.log(e)
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }
  }
]

module.exports.getHomePage = [
  async (req, res) => {
    try {
      const portal = req?.query?.portal ? req.query.portal : 'ostandari';

      if (!req.user.portals.includes(portal)) {
        return res.status(403).json(`شما اجازه دسترسی به اطلاعات این صفحه را ندارید`);
      }

      const getHome = await HomePage.find({modelType: portal});
      if (getHome.length) return res.json(getHome[0])
      else return res.json({
        s2: '',
        s3: '',
        s4: '',
        s5: [],
        s6: '',
        s2Side: '',
        s3Side: '',
        s4Side: '',
        s5Side: '',
        s6Side: ''
      })
    } catch (e) {
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }
  }
]

module.exports.changeShowInHome = [
  [
    body('id')
       .notEmpty().withMessage(_sr['fa'].required.title),

    body('modelName')
       .custom((value, {req}) => {
         const models = ['news', 'newsFile', 'gallery']
         if (!models.includes(value)) {
           return Promise.reject(_sr['fa'].required.field);
         } else {
           return true
         }
       })

  ],
  async (req, res) => {
    const errors = validationResult(req)
    if (!errors.isEmpty()) return res.status(422).json({
      validation: errors.mapped()
    });
    try {
      const {id, modelName} = req.body;

      let Model;

      switch (modelName) {
        case 'news':
          Model = News;
          break;
        case 'newsFile' :
          Model = NewsFile;
          break;
        case 'gallery':
          Model = Gallery;
          break;
      }

      const targetModel = await Model.findById(id)

      if (!targetModel) return res404(res, `اطلاعات مورد یافت نشد`);

      targetModel.showInHome = !targetModel.showInHome;

      await targetModel.save();

      return res.json(targetModel);
    } catch (e) {
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }
  }
]

module.exports.getAllShowInHomeFalse = [
  async (req, res) => {
    try {
      const portal = req?.query?.portal ? req.query.portal : 'ostandari';

      const requests = [
        News.find({modelType: portal, showInHome: false}),
        NewsFile.find({modelType: portal, showInHome: false}),
        Gallery.find({modelType: portal, showInHome: false}),
      ]

      let fetch = await Promise.all(requests);

      const [news, newsFile, media] = fetch;

      return res.json({
        news,
        newsFile,
        media
      })
    } catch (e) {
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }
  }
]

/////////////////////////////////////////////////////// public
module.exports.getHomeByUser = [
  async (req, res) => {
    try {
      const homeSetting = await HomePage.find();

      const data = {
        occasion: [],
        s1: [],
        s2: [],
        s3: [],
        s4: [],
        s5: [],
        s6: [],
        s2Side: [],
        s3Side: [],
        s4Side: [],
        s5Side: [],
        s6Side: [],
      };

      const portal = req?.query?.portal ? req.query.portal : 'ostandari'

      const settings = homeSetting[0]
      const query = {publish: true, showInHome: true, modelType: portal}


      const request = [
        // Occasion
        Occasion.find({
          publish: true,
          status: true,
          startDate: {$lte: new Date()},
          endDate: {$gte: new Date()}
        }),
        // s1
        Slider.find({modelType: portal}),
        // s2
        News.find(settings?.s2 ? {
          ...query,
          catId: settings?.s2,
          newsStatus: true
        } : {...query, newsStatus: true}).populate('catId', 'title').limit(8).sort({customDate: -1}),
        // s3
        NewsFile.find(settings?.s3 ? {
          ...query,
          catId: settings?.s3
        } : query).populate('catId', 'title').limit(4).sort({_id: -1}),
        // s6
        News.find(settings?.s6 ? {
          ...query,
          catId: settings?.s6,
          newsStatus: true
        } : {...query, newsStatus: true}).limit(8).sort({userViews: -1}),
        // s1Side
        Content.find({param: 'manager'}),
        // s2Side
        Gallery.find(settings?.s2Side ? {
          ...query,
          catId: settings?.s2Side,
          galleryType: 'image',
          galleryStatus: true
        } : {...query, galleryType: 'image', galleryStatus: true}).populate('catId', 'title').limit(4).sort({customDate: -1}),
        // s3Side
        Gallery.find(settings?.s3Side ? {
          ...query,
          catId: settings?.s3Side,
          galleryType: 'video',
          galleryStatus: true
        } : {...query, galleryType: 'video', galleryStatus: true}).populate('catId', 'title').limit(4).sort({customDate: -1}),
        // s4Side
        Gallery.find(settings?.s4Side ? {
          ...query,
          catId: settings?.s4Side,
          galleryType: 'graphic',
          galleryStatus: true
        } : {...query, galleryType: 'graphic', galleryStatus: true}).populate('catId', 'title').limit(4).sort({customDate: -1}),
        // s5Side
        News.find(settings?.s5Side ? {
          ...query,
          catId: settings?.s5Side,
          special: true,
          newsStatus: true
        } : {...query, newsStatus: true, special: true}).limit(4).sort({customDate: -1}),
        // s6Side
        News.find(settings?.s6Side ? {
          ...query,
          catId: settings?.s6Side,
          newsStatus: true
        } : {...query, newsStatus: true}).limit(6).sort({customDate: -1}),
        // s7Side
        Links.find({modelType: portal, showInHome: true}),
        // notifications-side
        News.find(settings?.s6Side ? {
          ...query,
          catId: settings?.s5Side,
          newsStatus: true,
          notifications: true
        } : {...query, newsStatus: true, notifications: true}).limit(6).sort({customDate: -1}),
      ]


      const fetch = await Promise.all(request)

      const [occasion, s1, s2, s3, s6, s1Side, s2Side, s3Side, s4Side, s5Side, s6Side, s7Side, notificationsSide] = fetch;

      data.occasion = occasion
      data.s1 = s1
      data.s2 = s2
      data.s3 = s3
      data.s6 = s6
      data.s1Side = s1Side
      data.s2Side = s2Side
      data.s3Side = s3Side
      data.s4Side = s4Side
      data.s5Side = s5Side
      data.s6Side = s6Side
      data.s7Side = s7Side
      data.notificationsSide = notificationsSide

      ////////////////// computed main news
      const nameTag = await Category.findById(settings?.s4);
      const s4Categories = await Category.find(settings?.s4 ? {parent: settings?.s4} : {})

      const s4Obj = {};

      s4Obj.nameTag = nameTag ? nameTag.title : '';

      let s4News = [];
      if (settings?.s4) {
        for await (const cat of s4Categories) {
          const getNew = await News.find({...query, catId: cat._id , newsStatus : true}).sort({customDate: -1})
          if (getNew.length) s4News.push(getNew[0])
        }
        if (s4Categories.length !== 4) {
          const getNews = await News.find({...query, catId: settings?.s4 , newsStatus : true}).populate('catId', 'title').limit(4 - s4News.length).sort({customDate: -1})
          for (const item of getNews) {
            s4News.push(item);
          }
        }
      } else {
        s4News = await News.find({...query,newsStatus : true}).populate('catId', 'title').limit(4).sort({customDate: -1});
      }

      s4Obj.news = s4News
      data.s4 = s4Obj;

      //// s5
      if (settings?.s5?.length) {
        const s5News = []
        for await (const id of settings?.s5) {
          const item = {}
          const nameTag = await Category.findById(id)
          item.nameTag = nameTag ? nameTag.title : '';
          item.news = await News.find({...query, rootParent: id , newsStatus : true}).limit(10).sort({_id: -1})
          s5News.push(item)
        }
        data.s5 = s5News
      }

      return res.json(data);
    } catch (e) {
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }
  }
]

module.exports.search = [
  async (req, res) => {
    const {portal, terms} = req.query;

    try {
      const requests = [
        News.find({
          newsStatus: true, publish: true, $or: [
            {title: {$regex: terms, $options: 'i'}},
            {summaryTitle: {$regex: terms, $options: 'i'}},
            {keywords: {$in: terms}}
          ]
        }),
        Gallery.find({
          galleryStatus: true, publish: true, $or: [
            {title: {$regex: terms, $options: 'i'}},
            {summaryTitle: {$regex: terms, $options: 'i'}},
            {keywords: {$in: terms}}
          ]
        }),
        Category.find({
          $or: [
            {title: {$regex: terms, $options: 'i'}},
            {pageContent: {$regex: terms, $options: 'i'}}
          ]
        })
      ]

      const getData = await Promise.all(requests);

      let [news, gallery, category] = getData;

      return res.json({
        news,
        media: gallery,
        pages: category
      });

    } catch (e) {
      return res500(res, 'مشکلی در گرفتن اطلاعات پیش آمده است');
    }

  }
]