require('dotenv').config()

const dbRefreshToken	= require('./dbRefreshToken')
const validateToken		= require('./validateToken')
const refreshToken		= require('./refreshToken')
const writeEnv			= require('./writeEnv')

let client_id = process.env.TWITCH_APP_ID
let client_secret = process.env.TWITCH_APP_SECRET

module.exports = checkChannel = (async (channel_access_token) => {
	let result = [channel_access_token, '']

	// Check if channel_access_token is valid
	if (!await validateToken(channel_access_token)) {
		let channel_refresh_token = await dbRefreshToken('get', 'channel')
		if (channel_refresh_token.error) return channel_refresh_token.error
		
		result = await refreshToken(client_id, client_secret, channel_refresh_token)
		
		if (result.status) return result = ['no_refresh', result.message]
		else {
			let [channel_access_token, channel_refresh_token] = result
			writeEnv('TWITCH_CHANNEL_ACCESS_TOKEN', channel_access_token)
			writeEnv('TWITCH_CHANNEL_REFRESH_TOKEN', channel_refresh_token)

			await dbRefreshToken('update', 'channel', channel_refresh_token)

			let channel_name = await getUserInfo(client_id, channel_access_token, 'login')
			writeEnv('TWITCH_CHANNEL_NAME', channel_name)
		}		
	} else {
		let channel_name = await getUserInfo(client_id, channel_access_token, 'login')
		result = [channel_access_token, channel_name]
		writeEnv('TWITCH_CHANNEL_NAME', channel_name)
	}
	return result
})