<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008, 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

/**
 * @todo Needs documentation.
 */
class Channel
{
    function on($user)
    {
        return false;
    }

    function off($user)
    {
        return false;
    }

    function output($user, $text)
    {
        return false;
    }

    function error($user, $text)
    {
        return false;
    }

    function source()
    {
        return null;
    }
}

class CLIChannel extends Channel
{
    function source()
    {
        return 'cli';
    }

    function output($user, $text)
    {
        $site = common_config('site', 'name');
        print "[{$user->nickname}@{$site}] $text\n";
    }

    function error($user, $text)
    {
        $this->output($user, $text);
    }
}

class WebChannel extends Channel
{
    var $out = null;

    function __construct($out=null)
    {
        $this->out = $out;
    }

    function source()
    {
        return 'web';
    }

    function on($user)
    {
        return false;
    }

    function off($user)
    {
        return false;
    }

    function output($user, $text)
    {
        // XXX: buffer all output and send it at the end
        // XXX: even better, redirect to appropriate page
        //      depending on what command was run
        $this->out->startHTML();
        $this->out->elementStart('head');
        // TRANS: Title for command results.
        $this->out->element('title', null, _('Command results'));
        $this->out->elementEnd('head');
        $this->out->elementStart('body');
        $this->out->element('p', array('id' => 'command_result'), $text);
        $this->out->elementEnd('body');
        $this->out->endHTML();
    }

    function error($user, $text)
    {
        common_user_error($text);
    }
}

class AjaxWebChannel extends WebChannel
{
    function output($user, $text)
    {
        $this->out->startHTML('text/xml;charset=utf-8');
        $this->out->elementStart('head');
        // TRANS: Title for command results.
        $this->out->element('title', null, _('Command results'));
        $this->out->elementEnd('head');
        $this->out->elementStart('body');
        $this->out->element('p', array('id' => 'command_result'), $text);
        $this->out->elementEnd('body');
        $this->out->endHTML();
    }

    function error($user, $text)
    {
        $this->out->startHTML('text/xml;charset=utf-8');
        $this->out->elementStart('head');
        // TRANS: Title for command results.
        $this->out->element('title', null, _('AJAX error'));
        $this->out->elementEnd('head');
        $this->out->elementStart('body');
        $this->out->element('p', array('id' => 'error'), $text);
        $this->out->elementEnd('body');
        $this->out->endHTML();
    }
}

class MailChannel extends Channel
{
    var $addr = null;

    function source()
    {
        return 'mail';
    }

    function __construct($addr=null)
    {
        $this->addr = $addr;
    }

    function on($user)
    {
        return $this->setNotify($user, 1);
    }

    function off($user)
    {
        return $this->setNotify($user, 0);
    }

    function output($user, $text)
    {
        $headers['From'] = $user->incomingemail;
        $headers['To'] = $this->addr;

        // TRANS: E-mail subject when a command has completed.
        $headers['Subject'] = _('Command complete');

        return mail_send(array($this->addr), $headers, $text);
    }

    function error($user, $text)
    {
        $headers['From'] = $user->incomingemail;
        $headers['To'] = $this->addr;

        // TRANS: E-mail subject when a command has failed.
        $headers['Subject'] = _('Command failed');

        return mail_send(array($this->addr), $headers, $text);
    }

    function setNotify($user, $value)
    {
        $orig = clone($user);
        $user->smsnotify = $value;
        $result = $user->update($orig);
        if (!$result) {
            common_log_db_error($user, 'UPDATE', __FILE__);
            return false;
        }
        return true;
    }
}