#!/usr/bin/env node

const execOriginal = require('child_process').exec
const requestOriginal = require('request')

function exec(command) {
    return new Promise(function (resolve, reject) {
        processToRun = execOriginal(command, function (err, stdout, stderr) {
            if (stderr) {
                console.log('stderr')
                console.log(stderr)
            }

            if (err) {
                reject(err)
                return
            }

            resolve(stdout)
        })

        if (processToRun.stdout && processToRun.stdout.pipe) {
            processToRun.stdout.pipe(process.stdout)
        }
    })
}

function request(url) {
    return new Promise(function (resolve, reject) {
        requestOriginal(url, function (error, response, body) {
            if (body) {
                body = JSON.parse(body)
            }

            if (error || !body) {
                console.log('Error while fetching tags from Docker Hub!')
                reject(error)
                return
            }

            resolve(body)
        })
    })
}

const publishedNameOnDockerHub = 'caprover/caprover'
let version = ''

exec('npm run build')
    .then(function (data) {
        data = (data + '').trim()
        console.log('----------')
        console.log(data)
        console.log('----------')
        if (
            !data.startsWith('> caprover@0.0.0') ||
            !data.endsWith('rm -rf ./built && npx tsc')
        ) {
            console.log('Unexpected output:')
            throw new Error(data)
        }

        version = require('./built/utils/CaptainConstants').configs.version
        return exec(`rm -rf ./built`)
    })
    .then(function () {

        return exec('git status')
    })
    .then(function (data) {
        var l1 = 'On branch master'
        var l2 = "Your branch is up-to-date with 'origin/master'"
        var l3 = 'nothing to commit, working tree clean'

        if (
            data.indexOf(l1) < 0 ||
            data.indexOf(l2) < 0 ||
            data.indexOf(l3) < 0
        ) {
            console.log(
                'Make sure you are on master branch, in sync with remote, and your working directory is clean'
            )
            throw new Error(data)
        }

        var URL =
            'https://hub.docker.com/v2/repositories/' +
            publishedNameOnDockerHub +
            '/tags'

        return request(URL)
    })
    .then(function (body) {
        if (!body.results || !body.results.length) {
            console.log('Error while fetching tags from Docker Hub!')
            throw error
        }

        var highestTag = ''
        var highestTagValue = 0

        function getTagValue(tag) {
            var sp = tag.split('.')
            return (
                Number(sp[0]) * 1000 * 1000 +
                Number(sp[1]) * 1000 +
                Number(sp[2])
            )
        }

        for (var i = 0; i < body.results.length; i++) {
            var t = body.results[i].name
            var value = getTagValue(t)

            if (value > highestTagValue) {
                highestTagValue = value
                highestTag = t
            }
        }

        var isVersionValid = false

        if (getTagValue(version) > highestTagValue) {
            isVersionValid = true
        }

        if (!isVersionValid || !highestTagValue || !version) {
            console.log(
                `isVersionValid: ${isVersionValid}   highestTagValue: ${highestTagValue}`
            )
            throw new Error(
                'The version you are pushing is not valid! ' + version
            )
        }

        console.log('Pushing ' + version)

        var t1 = publishedNameOnDockerHub + ':' + 'latest'
        var t2 = publishedNameOnDockerHub + ':' + version

        return exec(
            `sudo docker build -t ${t1} -t ${t2} -f dockerfile-captain.release . && docker push ${t1} && docker push ${t2}`
        )
    })
    .then(function (stdout) {
        if (stdout) {
            console.log('stdout')
            console.log(stdout)
        }
    })
    .catch(function (err) {
        console.error(err)
        process.exit(1)
    })