import * as plugins from './npmci.plugins'
import {bash} from './npmci.bash'
import * as env from './npmci.env'
import * as sshModule from './npmci.ssh'


// types

/**
 * defines possible prepare services
 */
export type TPrepService = 'npm' | 'docker' | 'docker-gitlab' | 'ssh';

/**
 * authenticates npm with token from env var
 */
let npm = function(){
    let done = plugins.q.defer()

    let npmrcPrefix: string = '//registry.npmjs.org/:_authToken='
    let npmToken: string = process.env.NPMCI_TOKEN_NPM
    let npmrcFileString = npmrcPrefix + npmToken

    if (npmToken) {
        plugins.beautylog.info('found access token')
    } else {
        plugins.beautylog.error('no access token found! Exiting!')
        process.exit(1)
    }
    plugins.smartfile.memory.toFsSync(npmrcFileString,'/root/.npmrc')
    done.resolve()
    return done.promise
}

/**
 * logs in docker
 */
let docker = function(){
    let done = plugins.q.defer()
    env.setDockerRegistry('docker.io')
    let dockerRegex = /^([a-zA-Z0-9\.]*)\|([a-zA-Z0-9\.]*)/
    if (!process.env.NPMCI_LOGIN_DOCKER) {
        plugins.beautylog.error('You have to specify Login Data to the Docker Registry')
        process.exit(1)
    }
    plugins.shelljs.exec('docker login -u gitlab-ci-token -p ' + process.env.CI_BUILD_TOKEN + ' ' + 'registry.gitlab.com') // Always also login to GitLab Registry
    let dockerRegexResultArray = dockerRegex.exec(process.env.NPMCI_LOGIN_DOCKER)
    let username = dockerRegexResultArray[1]
    let password = dockerRegexResultArray[2]
    plugins.shelljs.exec('docker login -u ' + username + ' -p ' + password)
    done.resolve()
    return done.promise
}

/**
 * prepare docker for gitlab registry
 */
let dockerGitlab = function(){
    let done = plugins.q.defer()
    env.setDockerRegistry('registry.gitlab.com')
    plugins.shelljs.exec('docker login -u gitlab-ci-token -p ' + process.env.CI_BUILD_TOKEN + ' ' + 'registry.gitlab.com')
    done.resolve()
    return done.promise
}

/**
 * prepare ssh
 */
let ssh = function(){
    let done = plugins.q.defer()
    sshModule.ssh()
        .then(done.resolve)
    return done.promise
}

/**
 * the main exported prepare function
 * @param servieArg describes the service to prepare
 */
export let prepare = function(serviceArg: TPrepService){
    switch (serviceArg) {
        case 'npm':
            return npm()
        case 'docker':
            return docker()
        case 'docker-gitlab':
            return dockerGitlab()
        case 'ssh':
            return ssh()
        default:
            break
    }
}