const dayjs = require('dayjs')
const utc = require('dayjs/plugin/utc')
const timezone = require('dayjs/plugin/timezone')

dayjs.extend(utc)
dayjs.extend(timezone)

const tz = {
  AE: 'Asia/Dubai'
}

module.exports = {
  site: 'osn.com',
  request: {
    method: 'POST',
    data({ channel, date }) {
      const [selectedCountry, channelCode] = channel.site_id.split('#')
      return {
        newDate: date.format('MM/DD/YYYY'),
        selectedCountry,
        channelCode,
        isMobile: false,
        hoursForMobile: 0
      }
    }
  },
  url: function () {
    return `https://www.osn.com/CMSPages/TVScheduleWebService.asmx/GetTVChannelsProgramTimeTable`
  },
  logo: function ({ channel }) {
    const [_, channelCode] = channel.site_id.split('#')

    return `https://content.osn.com/logo/channel/cropped/${channelCode}.png`
  },
  parser: function ({ content, channel }) {
    let programs = []
    const items = parseItems(content)
    items.forEach(item => {
      const start = parseStart(item, channel)
      const duration = parseDuration(item)
      const stop = start.add(duration, 'm')
      programs.push({
        title: item.Arab_Title,
        category: item.GenreArabicName,
        start: start.toString(),
        stop: stop.toString()
      })
    })

    return programs
  }
}

function parseDuration(item) {
  return parseInt(item.TotalDivWidth / 4.8)
}

function parseStart(item, channel) {
  const time = item.StartDateTime
  const [selectedCountry] = channel.site_id.split('#')

  return dayjs.tz(time, 'DD MMM YYYY, HH:mm', tz[selectedCountry])
}

function parseItems(content) {
  if (!content) return []
  const json = JSON.parse(content)

  return json.d ? JSON.parse(json.d) : []
}