const axios = require('axios')
const dayjs = require('dayjs')
const cheerio = require('cheerio')
const utc = require('dayjs/plugin/utc')
const customParseFormat = require('dayjs/plugin/customParseFormat')

dayjs.extend(utc)
dayjs.extend(customParseFormat)

const API_ENDPOINT = 'https://sat.tv/wp-content/themes/twentytwenty-child/ajax_chaines.php'

module.exports = {
  site: 'sat.tv',
  days: 2,
  url: API_ENDPOINT,
  request: {
    method: 'POST',
    headers({ channel }) {
      return {
        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
        Cookie: `pll_language=${channel.lang}`
      }
    },
    data({ channel, date }) {
      const [satSatellite, satLineup] = channel.site_id.split('#')
      const params = new URLSearchParams()
      params.append('dateFiltre', date.format('YYYY-MM-DD'))
      params.append('hoursFiltre', '0')
      params.append('satLineup', satLineup)
      params.append('satSatellite', satSatellite)
      params.append('userDateTime', date.valueOf())
      params.append('userTimezone', 'Europe/London')

      return params
    }
  },
  parser: function ({ content, date, channel }) {
    let programs = []
    const items = parseItems(content, channel)
    items.forEach(item => {
      let $item = cheerio.load(item)
      let start = parseStart($item, date)
      let duration = parseDuration($item)
      let stop = start.add(duration, 'm')

      programs.push({
        title: parseTitle($item),
        description: parseDescription($item),
        icon: parseIcon($item),
        start,
        stop
      })
    })

    return programs
  },
  async channels({ lang, satLineup, satSatellite }) {
    const params = new URLSearchParams()
    params.append('dateFiltre', dayjs().format('YYYY-MM-DD'))
    params.append('hoursFiltre', '0')
    params.append('satLineup', satLineup)
    params.append('satSatellite', satSatellite)
    params.append('userDateTime', dayjs().valueOf())
    params.append('userTimezone', 'Europe/London')
    const data = await axios
      .post(API_ENDPOINT, params, {
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
          Cookie: `pll_language=${lang}`
        }
      })
      .then(r => r.data)
      .catch(console.log)

    const $ = cheerio.load(data)
    const channels = $('.main-container-channels-events > .container-channel-events').toArray()

    return channels.map(item => {
      const name = $(item).find('.channel-title').text().trim()
      return {
        lang,
        site_id: name,
        name
      }
    })
  }
}

function parseIcon($item) {
  const src = $item('.event-logo img:not(.no-img)').attr('src')

  return src ? `https://sat.tv${src}` : null
}

function parseTitle($item) {
  return $item('.event-data-title').text()
}

function parseDescription($item) {
  return $item('.event-data-desc').text()
}

function parseStart($item, date) {
  let eventDataDate = $item('.event-data-date').text().trim()
  let [, time] = eventDataDate.match(/(\d{2}:\d{2})/) || [null, null]
  if (!time) return null

  return dayjs.utc(`${date.format('YYYY-MM-DD')} ${time}`, 'YYYY-MM-DD HH:mm')
}

function parseDuration($item) {
  let eventDataInfo = $item('.event-data-info').text().trim()
  let [, h, m] = eventDataInfo.match(/(\d{2})h(\d{2})/) || [null, 0, 0]

  return parseInt(h) * 60 + parseInt(m)
}

function parseItems(content, channel) {
  const [, , site_id] = channel.site_id.split('#')
  const $ = cheerio.load(content)
  const channelData = $('.main-container-channels-events > .container-channel-events')
    .filter((index, el) => {
      return $(el).find('.channel-title').text().trim() === site_id
    })
    .first()
  if (!channelData) return []

  return $(channelData).find('.container-event').toArray()
}