const request = require('request')
const database = require('../database/database.js')
const not_found_error = require('../../lib/src/http/errors/not_found_error')
const {ping_session_server} = require('../modules/session_server.js')

const max_response_timeout = 500

const validate_url = async (domain) => {
    let options = {
        url: domain,
        method: "GET",
        path: '/',
        timeout: max_response_timeout
    }

    return new Promise(function (resolve, reject) {
        request(options,
            async function(err, answer, data) {
                if (err || !answer.socket) {
                    resolve(false)
                    return
                } else if (answer.socket.authorized) {
                    resolve(true)
                } else {
                    resolve(false)
                }
            }
        )
    })
}

const validate_all_urls = async (urls) => {
    return Promise.all(urls.map(async (url) => {
        const status = await validate_url(url)
        return {url:url, status:status}
    }))
}

const ping_all_session_servers = async (urls) => {
    return Promise.all(urls.map(async (url) => {
        const status = await ping_session_server(url)
        return {url:url, status:status}
    }))
}



const get_status = async (req, res, next) => {
    let statuses = await database.get_statuses()
    let urls = statuses[0].urls

    let session_servers = await database.get_all_session_servers()

    let session_servers_urls = []

    session_servers.forEach(server => {
        session_servers_urls.push(server.url)
    })

    urls = urls.concat(session_servers_urls)

    // all ssl statuses
    let ssl_statuses = await validate_all_urls(urls)

    let session_server_statuses = await ping_all_session_servers(session_servers_urls)

    let errors = await database.get_errors()

    let active_sessions = await database.get_all_active_sessions()
    if (active_sessions) {
        active_sessions.forEach(function(part, index) {
            this[index].websocket_url = ""
            this[index].session_id = ""
        }, active_sessions)
    }

    let sessions_history = await database.get_all_session_history()
    if (sessions_history) {
        sessions_history.forEach(function(part, index) {
            this[index].websocket_url = ""
            this[index].session_id = ""
        }, sessions_history)
    }
    
    res.json([{ssl_statuses:ssl_statuses}, {session_server_statuses:session_server_statuses}, {errors:errors}, {active_sessions:active_sessions}, {sessions_history:sessions_history}])
}

module.exports = {
    get_status
}