import 'typings-global'
import * as plugins from './npmci.plugins'

let sshRegex = /^(.*)\|(.*)\|(.*)/
let sshInstance: plugins.smartssh.SshInstance

/**
 * checks for ENV vars in form of NPMCI_SSHKEY_* and deploys any found ones
 */
export let ssh = () => {
    let done = plugins.q.defer()
    sshInstance = new plugins.smartssh.SshInstance() // init ssh instance
    plugins.smartparam.forEachMinimatch(process.env,'NPMCI_SSHKEY_*',evaluateSshEnv)
    if (!process.env.NPMTS_TEST) {
        sshInstance.writeToDisk()
    } else {
        plugins.beautylog.log('In test mode, so not storing SSH keys to disk!')
    };
    done.resolve()
    return done.promise
}

/**
 * gets called for each found SSH ENV Var and deploys it 
 */
let evaluateSshEnv = (sshkeyEnvVarArg) => {
    let resultArray = sshRegex.exec(sshkeyEnvVarArg)
    let sshKey = new plugins.smartssh.SshKey()
    plugins.beautylog.info('Found SSH identity for ' + resultArray[1])
    if (notUndefined(resultArray[1])) {
        plugins.beautylog.log('---> host defined!')
        sshKey.host = resultArray[1]
    }
    if (notUndefined(resultArray[2])) {
        plugins.beautylog.log('---> privKey defined!')
        sshKey.privKeyBase64 = resultArray[2]
    };
    if (notUndefined(resultArray[3])) {
        '---> pubKey defined!'
        sshKey.pubKeyBase64 = resultArray[3]
    };

    sshInstance.addKey(sshKey)
}

/**
 * checks if not undefined
 */
let notUndefined = (stringArg: string) => {
    return (stringArg && stringArg !== 'undefined' && stringArg !== '##')
}