import { useEffect, useState, useRef } from 'preact/hooks'
import axios from 'axios'
import ICAL from 'ical.js'
import config from '../data/config'

export const useEventStream = () => {
  const [data, setData] = useState([])
  const [loading, setLoading] = useState(true)

  async function fetchData() {
    setLoading(true)

    const { data: responseData } = await axios.get(
      `https://cloud.undersco.re/remote.php/dav/public-calendars/${config.calendarId}/?export`
    )
    const jCalData = ICAL.parse(responseData)
    const comp = new ICAL.Component(jCalData)

    const vevents = comp.getAllSubcomponents('vevent')

    const calEvents = vevents
      .filter(
        vevent =>
          vevent.getFirstPropertyValue('status') === null ||
          (vevent.getFirstPropertyValue('status') &&
            vevent.getFirstPropertyValue('status').toUpperCase() ===
              'CONFIRMED')
      )
      .map(vevent => {
        const event = new ICAL.Event(vevent)
        return event
      })
      .sort((a, b) => a.startDate.toJSDate() - b.startDate.toJSDate())

    await Promise.all(
      calEvents.map(async calItem => {
        const url = calItem.component.getAllProperties('url')[0]
        if (url) {
          const id = url
            .getFirstValue()
            .split('/')
            .pop()
          const {
            data: {
              account,
              category,
              channel,
              embedPath,
              language,
              state,
              previewPath,
              views,
              duration,
            },
          } = await axios.get(`https://tv.undersco.re/api/v1/videos/${id}`)

          const item = {
            title: calItem.summary,
            account,
            category,
            channel,
            description: calItem.description,
            embedPath,
            language,
            state,
            previewPath,
            views,
            start: calItem.startDate.toJSDate(),
            end: calItem.endDate.toJSDate(),
            id,
            duration,
            videoUrl: url.getFirstValue(),
          }
          setData(arr => [...arr, item])
        } else {
          const item = {
            title: calItem.summary,
            description: calItem.description,
            start: calItem.startDate.toJSDate(),
            end: calItem.endDate.toJSDate(),
          }
          setData(arr => [...arr, item])
        }
      })
    )

    setLoading(false)
  }

  useEffect(() => {
    fetchData()
  }, [])

  return { loading, data }
}