<?php
/**
 * PHPCI - Continuous Integration for PHP
 *
 * @copyright    Copyright 2014, Block 8 Limited.
 * @license      https://github.com/Block8/PHPCI/blob/master/LICENSE.md
 * @link         https://www.phptesting.org/
 */

namespace PHPCI\Plugin;

use PHPCI\Builder;
use PHPCI\Model\Build;

/**
* XMPP Notification - Send notification for successful or failure build
* @author       Alexandre Russo <dev.github@ange7.com>
* @package      PHPCI
* @subpackage   Plugins
*/
class XMPP implements \PHPCI\Plugin
{
    protected $directory;
    protected $args;
    protected $phpci;
    protected $build;

    /**
     * @var string, username of sender account xmpp
     */
    protected $username;

    /**
     * @var string, alias server of sender account xmpp
     */
    protected $server;

    /**
     * @var string, password of sender account xmpp
     */
    protected $password;

    /**
     * @var string, alias for sender
     */
    protected $alias;

    /**
     * @var string, use tls
     */
    protected $tls;

    /**
     * @var array, list of recipients xmpp accounts
     */
    protected $recipients

    /**
     * @var string, mask to format date
     */
    protected $dateFormat

    /**
     *
     * @param Builder $phpci
     * @param Build $build
     * @param array $options
     */
    public function __construct(Builder $phpci, Build $build, array $options = array())
    {
        $this->phpci = $phpci;
        $this->build = $build;

        $this->username  = '';
        $this->password  = '';
        $this->server    = '';
        $this->alias     = '';
        $this->recipients= array();
        $this->tls       = false;
        $this->dateFormat= '%d/%m/%Y %l:%M %P';

        /*
         * Set recipients list
         */
        if(!empty($options['recipients'])) {
            if(is_string($options['recipients'])) {
                $this->recipients = array($options['recipients']);
            } elseif(is_array($options['recipients'])) {
                $this->recipients = $options['recipients'];
            }
        }

        $this->setOptions($options);
    }

    /**
     * Set options configuration for plugin
     *
     * @param array $options
     */
    protected function setOptions($options)
    {
        foreach (array('username', 'password', 'alias', 'tls', 'server', 'dateFormat')
                as $key) {
            if (array_key_exists($key, $options)) {
                $this->{$key} = $options[$key];
            }
        }
    }

    /**
     * Get config format for sendxmpp config file
     *
     * @return string
     */
    protected function getConfigFormat()
    {
        $conf = $this->username;
        if(!empty($this->server)) {
            $conf .= ';'.$this->server;
        }

        $conf .= ' '.$this->password;

        if(!empty($this->alias)) {
            $conf .= ' '.$this->alias;
        }

        return $conf;
    }

    /**
     * Find config file for sendxmpp binary (default is ~/.sendxmpp)
     */
    public static function findConfigFile()
    {
        if (file_exists('~/.sendxmpp')) {
            if( md5(file_get_contents('~/.sendxmpp')) !==
                    md5($this->getConfigFormat())) {
                return null;
            }

            return true;
        }

        return null;
    }

    /**
    * Send notification message.
    */
    public function execute()
    {
        $sendxmpp = $this->phpci->findBinary('/usr/bin/sendxmpp');

        if (!$sendxmpp) {
            $this->phpci->logFailure('Could not find sendxmpp.');
            return false;
        }

        /*
         * Without recipients we can't send notification
         */
        if (count($this->recipients) == 0) {
            return false;
        }

        /*
         * Try to build conf file
         */
        if(is_null(self::findConfigFile())) {
            file_put_contents('~/.sendxmpp', $this->getConfigFormat());
            chmod('~/.sendxmpp', 0600);
        }

        /*
         * Enabled ssl for connection
         */
        $tls = '';
        if($this->tls) {
            $tls = ' -t';
        }

        /*
         * Send XMPP notification for all recipients
         */
        $success = array()
        foreach($this->recipients as $recipient) {
            if($cmd = $this->phpci->executeCommand('echo %s | ' . $sendxmpp .
                    ' %s %s', $this->getMessage(), $tls, $recipients)) {
                $success[] = $cmd;
            }

            print $this->phpci->getLastOutput();
        }

        return (count($success) === count($this->recipients));
    }

    /**
     * Build message for notification
     *
     * @return string
     */
    protected function getMessage()
    {
        $message = '';

        if($this->build->isSuccessful()) {
            $message = "✔ [".$this->build->getProjectTitle()."] Build #".
                    $this->build->getId()." successful";
        } else {
            $message = "✘ [".$this->build->getProjectTitle()."] Build #".
                    $this->build->getId()." failure";
        }

        $message .= ' ('.strftime($this->dateFormat).')';
        return $message;
    }
}