const apexinstance = require('./lib/apex'),
    apexcustom = require('./lib/apexcustom'),
    apiswagger = require('./lib/apiswagger'),
    api = require('./lib/api'),
    logger = require('./lib/logger'),
    swagger = require('./lib/swagger'),
    fediblock = require('./lib/fediblock'),
    constant = require('./lib/constant'),
    http = require('http'),
    express = require('express'),
    app = express(),
    events = require('events'),
    { generateKeyPairSync } = require('crypto'),
    { MongoClient } = require('mongodb'),
    mongoclient = new MongoClient(constant.dburl),
    { Client } = require('@elastic/elasticsearch'),
    client = new Client({
        node: constant.elasticnode,
        pingTimeout: 10000,
        requestTimeout: 60000,
        retryOnTimeout: true,
        maxRetries: 3
    }),
    ActivitypubExpress = require('activitypub-express'),
    routes = {
        actor: '/u/:actor',
        object: '/o/:id',
        activity: '/s/:id',
        inbox: '/u/:actor/inbox',
        outbox: '/u/:actor/outbox',
        followers: '/u/:actor/followers',
        following: '/u/:actor/following',
        liked: '/u/:actor/liked',
        collections: '/u/:actor/c/:id',
        blocked: '/u/:actor/blocked',
        rejections: '/u/:actor/rejections',
        rejected: '/u/:actor/rejected',
        shares: '/s/:id/shares',
        likes: '/s/:id/likes'
    },
    apex = ActivitypubExpress({
        name: 'Fediblock Instance',
        version: '1.0.0',
        domain: constant.apexdomain,
        actorParam: 'actor',
        objectParam: 'id',
        activityParam: 'id',
        routes,
        endpoints: {
            proxyUrl: 'https://' + constant.apexdomain + '/proxy'
        },
        itemsPerPage: 50
    }),
    server = http.createServer(app).listen(4000, () => {
        mongoclient.connect()
            .then(async () => {
                const exists = await client.indices.exists({ index: constant.index })
                if (!exists) {
                    await client.indices.create({
                        index: constant.index,
                        body: require('./fediblock-mapping.json')
                    })
                }
                apex.store.db = mongoclient.db(constant.dbname)
                return apex.store.db
            })
            .then(async () => {
                try {
                    const admin = await apex.store.getObject(apex.utils.usernameToIRI('admin'), true)
                    if (!admin) {
                        const adminaccount = await apex.createActor('admin', 'Fediblock Admin', 'Fediblock Admin - https://' + constant.apexdomain,
                            { type: 'Image', mediaType: 'image/png', url: constant.icon }, 'Service'),
                            keys = generateKeyPairSync('rsa', {
                                modulusLength: 2048,
                                publicKeyEncoding: {
                                    type: 'spki',
                                    format: 'pem'
                                },
                                privateKeyEncoding: {
                                    type: 'pkcs8',
                                    format: 'pem'
                                }
                            })
                        adminaccount.publicKey[0].publicKeyPem[0] = keys.publicKey
                        adminaccount._meta.privateKey = keys.privateKey
                        await apex.store.saveObject(adminaccount)
                        const bot = await apex.createActor(constant.nick, 'Fediblock Bot', 'Fediblock #Bot - https://' + constant.apexdomain,
                            { type: 'Image', mediaType: 'image/png', url: constant.icon }, 'Person'),
                            keysbot = generateKeyPairSync('rsa', {
                                modulusLength: 2048,
                                publicKeyEncoding: {
                                    type: 'spki',
                                    format: 'pem'
                                },
                                privateKeyEncoding: {
                                    type: 'pkcs8',
                                    format: 'pem'
                                }
                            })
                        bot.publicKey[0].publicKeyPem[0] = keysbot.publicKey
                        bot._meta.privateKey = keysbot.privateKey
                        await apex.store.saveObject(bot)
                        apex.systemUser = adminaccount
                        apex.store.setup(adminaccount)
                    } else {
                        apex.systemUser = admin
                    }
                    await apex.startDelivery()
                    console.log('Server listening on ' + server.address().address + ':' + server.address().port)
                    await fediblock(client, apex, app)
                } catch (e) {
                    console.error(e)
                }
            })
    })

app.locals.scan = new events.EventEmitter()
app.locals.scannum = 0
app.locals.scantotal = 0
app.locals.server = ''
app.locals.peers = 0
app.locals.instances = 0
app.locals.created = 0
app.locals.updated = 0
app.disable('x-powered-by')
app.set('json spaces', 2)
app.set('trust proxy', true)
logger(app)
app.use(
    express.json({ type: apex.consts.jsonldTypes }),
    express.urlencoded({ extended: true }),
    apex
)
apexinstance(app, apex, routes)
apexcustom(app, apex, client)
api(app, apex, client)
apiswagger(app, client)
swagger(app)
app.use(express.static('dist'))
    .use((err, req, res, next) => {
        if (res.headersSent) {
            console.error(err.stack)
            return next(err)
        }
        res.status(500).end('Error')
    })