const express = require('express')
const fs = require('fs')
const databaseMigration = require('./database-migration');
const channelCache = require('./channel-cache')
const constants = require('./constants')

module.exports = { router: api }
function api(db, xmltvInterval) {
    let router = express.Router()

    router.get('/api/version', (req, res) => {
        res.send( { "dizquetv" : constants.VERSION_NAME } )
    })

    // Plex Servers
    router.get('/api/plex-servers', (req, res) => {
        let servers = db['plex-servers'].find()
        res.send(servers)
    })
    router.delete('/api/plex-servers', (req, res) => {
        db['plex-servers'].remove(req.body, false)
        let servers = db['plex-servers'].find()
        res.send(servers)
    })
    router.post('/api/plex-servers', (req, res) => {
        db['plex-servers'].save(req.body)
        let servers = db['plex-servers'].find()
        res.send(servers)
    })

    // Channels
    router.get('/api/channels', (req, res) => {
        let channels = db['channels'].find()
        channels.sort((a, b) => { return a.number < b.number ? -1 : 1 })
        res.send(channels)
    })
    router.post('/api/channels', (req, res) => {
        cleanUpChannel(req.body);
        db['channels'].save(req.body)
        channelCache.clear();
        let channels = db['channels'].find()
        channels.sort((a, b) => { return a.number < b.number ? -1 : 1 })
        res.send(channels)
        updateXmltv()

    })
    router.put('/api/channels', (req, res) => {
        cleanUpChannel(req.body);
        db['channels'].update({ _id: req.body._id }, req.body)
        channelCache.clear();
        let channels = db['channels'].find()
        channels.sort((a, b) => { return a.number < b.number ? -1 : 1 })
        res.send(channels)
        updateXmltv()
    })
    router.delete('/api/channels', (req, res) => {
        db['channels'].remove({ _id: req.body._id }, false)
        channelCache.clear();
        let channels = db['channels'].find()
        channels.sort((a, b) => { return a.number < b.number ? -1 : 1 })
        res.send(channels)
        updateXmltv()
    })

    // FFMPEG SETTINGS
    router.get('/api/ffmpeg-settings', (req, res) => {
        let ffmpeg = db['ffmpeg-settings'].find()[0]
        res.send(ffmpeg)
    })
    router.put('/api/ffmpeg-settings', (req, res) => {
        db['ffmpeg-settings'].update({ _id: req.body._id }, req.body)
        let ffmpeg = db['ffmpeg-settings'].find()[0]
        res.send(ffmpeg)
    })
    router.post('/api/ffmpeg-settings', (req, res) => { // RESET
        let ffmpeg = databaseMigration.defaultFFMPEG() ;
        ffmpeg.ffmpegPath = req.body.ffmpegPath;
        db['ffmpeg-settings'].update({ _id: req.body._id },  ffmpeg)
        ffmpeg = db['ffmpeg-settings'].find()[0]
        res.send(ffmpeg)
    })

    // PLEX SETTINGS
    router.get('/api/plex-settings', (req, res) => {
        let plex = db['plex-settings'].find()[0]
        res.send(plex)
    })
    router.put('/api/plex-settings', (req, res) => {
        db['plex-settings'].update({ _id: req.body._id }, req.body)
        let plex = db['plex-settings'].find()[0]
        res.send(plex)
    })
    router.post('/api/plex-settings', (req, res) => { // RESET
        db['plex-settings'].update({ _id: req.body._id }, {
            streamPath: 'plex',
            debugLogging: true,
            directStreamBitrate: '40000',
            transcodeBitrate: '3000',
            mediaBufferSize: 1000,
            transcodeMediaBufferSize: 20000,
            maxPlayableResolution: "1920x1080",
            maxTranscodeResolution: "1920x1080",
            videoCodecs: 'h264,hevc,mpeg2video,av1',
            audioCodecs: 'ac3',
            maxAudioChannels: '2',
            audioBoost: '100',
            enableSubtitles: false,
            subtitleSize: '100',
            updatePlayStatus: false,
            streamProtocol: 'http',
            forceDirectPlay: false,
            pathReplace: '',
            pathReplaceWith: ''
        })
        let plex = db['plex-settings'].find()[0]
        res.send(plex)
    })

    router.get('/api/xmltv-last-refresh', (req, res) => {
        res.send(JSON.stringify({ value: xmltvInterval.lastUpdated.valueOf() }))
    })

    // XMLTV SETTINGS
    router.get('/api/xmltv-settings', (req, res) => {
        let xmltv = db['xmltv-settings'].find()[0]
        res.send(xmltv)
    })
    router.put('/api/xmltv-settings', (req, res) => {
        db['xmltv-settings'].update({ _id: req.body._id }, req.body)
        let xmltv = db['xmltv-settings'].find()[0]
        res.send(xmltv)
        updateXmltv()
    })
    router.post('/api/xmltv-settings', (req, res) => {
        db['xmltv-settings'].update({ _id: req.body._id }, {
            _id: req.body._id,
            cache: 12,
            refresh: 4,
            file: process.env.DATABASE + '/xmltv.xml'
        })
        var xmltv = db['xmltv-settings'].find()[0]
        res.send(xmltv)
        updateXmltv()
    })


    //HDHR SETTINGS
    router.get('/api/hdhr-settings', (req, res) => {
        let hdhr = db['hdhr-settings'].find()[0]
        res.send(hdhr)
    })
    router.put('/api/hdhr-settings', (req, res) => {
        db['hdhr-settings'].update({ _id: req.body._id }, req.body)
        let hdhr = db['hdhr-settings'].find()[0]
        res.send(hdhr)
    })
    router.post('/api/hdhr-settings', (req, res) => {
        db['hdhr-settings'].update({ _id: req.body._id }, {
            _id: req.body._id,
            tunerCount: 1,
            autoDiscovery: true,
        })
        var hdhr = db['hdhr-settings'].find()[0]
        res.send(hdhr)
    })


    // XMLTV.XML Download
    router.get('/api/xmltv.xml', (req, res) => {
        res.type('text')
        let xmltvSettings = db['xmltv-settings'].find()[0]
        res.send(fs.readFileSync(xmltvSettings.file))
    })

    // CHANNELS.M3U Download 
    router.get('/api/channels.m3u', (req, res) => {
        res.type('text')
        let channels = db['channels'].find()
        var data = "#EXTM3U\n"
        for (var i = 0; i < channels.length; i++) {
            data += `#EXTINF:0 tvg-id="${channels[i].number}" tvg-name="${channels[i].name}" tvg-logo="${channels[i].icon}" group-title="dizqueTV",${channels[i].name}\n`
            data += `${req.protocol}://${req.get('host')}/video?channel=${channels[i].number}\n`
        }
        if (channels.length === 0) {
            data += `#EXTINF:0 tvg-id="1" tvg-name="dizqueTV" tvg-logo="https://raw.githubusercontent.com/vexorian/dizquetv/master/resources/dizquetv.png" group-title="dizqueTV",dizqueTV\n`
            data += `${req.protocol}://${req.get('host')}/setup\n`
        }
        res.send(data)
    })

    function updateXmltv() {
        xmltvInterval.updateXML()
        xmltvInterval.restartInterval()
    }

    function cleanUpProgram(program) {
        if ( typeof(program.server) !== 'undefined') {
            program.server = {
                uri: program.server.uri,
                accessToken: program.server.accessToken,
            }
        }
        delete program.streams;
    }

    function cleanUpChannel(channel) {
        channel.programs.forEach( cleanUpProgram );
        channel.fillerContent.forEach( cleanUpProgram );
        channel.fallback.forEach( cleanUpProgram );
    }


    return router
}