const api = require('../core/api')
const _ = require('lodash')

module.exports = async function (streams = []) {
	streams = _.filter(streams, stream => !stream.channel || stream.channel.is_nsfw === false)

	await api.countries.load()
	const countries = await api.countries.all()
	await api.regions.load()
	const regions = await api.regions.all()

	const output = []
	for (const country of countries) {
		const countryAreaCodes = _.filter(regions, { countries: [country.code] }).map(
			r => `r/${r.code}`
		)
		countryAreaCodes.push(`c/${country.code}`)
		let items = _.filter(
			streams,
			stream =>
				stream.channel && _.intersection(stream.channel.broadcast_area, countryAreaCodes).length
		)
		output.push({ filepath: `countries/${country.code.toLowerCase()}.m3u`, items })
	}

	let items = _.filter(streams, stream => !stream.channel || !stream.channel.broadcast_area.length)
	output.push({ filepath: 'countries/undefined.m3u', items })

	return output
}