<?php
/**
 * Name: Dreamwidth Post Connector
 * Description: Post to dreamwidth
 * Version: 1.0
 * Author: Tony Baldwin <https://free-haven.org/profile/tony>
 * Author: Michael Johnston
 * Author: Cat Gray <https://free-haven.org/profile/catness>
 */

use Friendica\App;
use Friendica\Content\Text\BBCode;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Tag;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\XML;

function dwpost_install()
{
	Hook::register('post_local',              'addon/dwpost/dwpost.php', 'dwpost_post_local');
	Hook::register('notifier_normal',         'addon/dwpost/dwpost.php', 'dwpost_send');
	Hook::register('jot_networks',            'addon/dwpost/dwpost.php', 'dwpost_jot_nets');
	Hook::register('connector_settings',      'addon/dwpost/dwpost.php', 'dwpost_settings');
	Hook::register('connector_settings_post', 'addon/dwpost/dwpost.php', 'dwpost_settings_post');
}

function dwpost_jot_nets(App $a, array &$jotnets_fields)
{
	if (!local_user()) {
		return;
	}

	if (DI::pConfig()->get(local_user(), 'dwpost', 'post')) {
		$jotnets_fields[] = [
			'type' => 'checkbox',
			'field' => [
				'dwpost_enable',
				DI::l10n()->t('Post to Dreamwidth'),
				DI::pConfig()->get(local_user(), 'dwpost', 'post_by_default')
			]
		];
	}
}


function dwpost_settings(App $a, &$s)
{
	if (!local_user()) {
		return;
	}

	/* Add our stylesheet to the page so we can make our settings look nice */
	DI::page()['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . DI::baseUrl()->get() . '/addon/dwpost/dwpost.css' . '" media="all" />' . "\r\n";

	/* Get the current state of our config variables */
	$enabled = DI::pConfig()->get(local_user(), 'dwpost', 'post');

	$checked = (($enabled) ? ' checked="checked" ' : '');

	$def_enabled = DI::pConfig()->get(local_user(), 'dwpost', 'post_by_default');

	$def_checked = (($def_enabled) ? ' checked="checked" ' : '');

	$dw_username = DI::pConfig()->get(local_user(), 'dwpost', 'dw_username');
	$dw_password = DI::pConfig()->get(local_user(), 'dwpost', 'dw_password');

	/* Add some HTML to the existing form */
	$s .= '<span id="settings_dwpost_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_dwpost_expanded\'); openClose(\'settings_dwpost_inflated\');">';
	$s .= '<img class="connector" src="images/dreamwidth.png" /><h3 class="connector">'. DI::l10n()->t("Dreamwidth Export").'</h3>';
	$s .= '</span>';
	$s .= '<div id="settings_dwpost_expanded" class="settings-block" style="display: none;">';
	$s .= '<span class="fakelink" onclick="openClose(\'settings_dwpost_expanded\'); openClose(\'settings_dwpost_inflated\');">';
	$s .= '<img class="connector" src="images/dreamwidth.png" /><h3 class="connector">'. DI::l10n()->t("Dreamwidth Export").'</h3>';
	$s .= '</span>';

	$s .= '<div id="dwpost-enable-wrapper">';
	$s .= '<label id="dwpost-enable-label" for="dwpost-checkbox">' . DI::l10n()->t('Enable dreamwidth Post Addon') . '</label>';
	$s .= '<input id="dwpost-checkbox" type="checkbox" name="dwpost" value="1" ' . $checked . '/>';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="dwpost-username-wrapper">';
	$s .= '<label id="dwpost-username-label" for="dwpost-username">' . DI::l10n()->t('dreamwidth username') . '</label>';
	$s .= '<input id="dwpost-username" type="text" name="dw_username" value="' . $dw_username . '" />';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="dwpost-password-wrapper">';
	$s .= '<label id="dwpost-password-label" for="dwpost-password">' . DI::l10n()->t('dreamwidth password') . '</label>';
	$s .= '<input id="dwpost-password" type="password" name="dw_password" value="' . $dw_password . '" />';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="dwpost-bydefault-wrapper">';
	$s .= '<label id="dwpost-bydefault-label" for="dwpost-bydefault">' . DI::l10n()->t('Post to dreamwidth by default') . '</label>';
	$s .= '<input id="dwpost-bydefault" type="checkbox" name="dw_bydefault" value="1" ' . $def_checked . '/>';
	$s .= '</div><div class="clear"></div>';

	/* provide a submit button */
	$s .= '<div class="settings-submit-wrapper" ><input type="submit" id="dwpost-submit" name="dwpost-submit" class="settings-submit" value="' . DI::l10n()->t('Save Settings') . '" /></div></div>';
}


function dwpost_settings_post(App $a, array &$b)
{
	if (!empty($_POST['dwpost-submit'])) {
		DI::pConfig()->set(local_user(), 'dwpost', 'post',            intval($_POST['dwpost']));
		DI::pConfig()->set(local_user(), 'dwpost', 'post_by_default', intval($_POST['dw_bydefault']));
		DI::pConfig()->set(local_user(), 'dwpost', 'dw_username',     trim($_POST['dw_username']));
		DI::pConfig()->set(local_user(), 'dwpost', 'dw_password',     trim($_POST['dw_password']));
	}
}

function dwpost_post_local(App $a, array &$b)
{
	// This can probably be changed to allow editing by pointing to a different API endpoint
	if ($b['edit']) {
		return;
	}

	if ((!local_user()) || (local_user() != $b['uid'])) {
		return;
	}

	if ($b['private'] || $b['parent']) {
		return;
	}

	$dw_post = intval(DI::pConfig()->get(local_user(),'dwpost','post'));

	$dw_enable = (($dw_post && !empty($_REQUEST['dwpost_enable'])) ? intval($_REQUEST['dwpost_enable']) : 0);

	if ($b['api_source'] && intval(DI::pConfig()->get(local_user(),'dwpost','post_by_default'))) {
		$dw_enable = 1;
	}

	if (!$dw_enable) {
		return;
	}

	if (strlen($b['postopts'])) {
		$b['postopts'] .= ',';
	}

	$b['postopts'] .= 'dwpost';
}

function dwpost_send(App $a, array &$b)
{
	if ($b['deleted'] || $b['private'] || ($b['created'] !== $b['edited'])) {
		return;
	}

	if (!strstr($b['postopts'],'dwpost')) {
		return;
	}

	if ($b['parent'] != $b['id']) {
		return;
	}

	/*
	 * dreamwidth post in the LJ user's timezone.
	 * Hopefully the person's Friendica account
	 * will be set to the same thing.
	 */
	$tz = 'UTC';

	$x = q("SELECT `timezone` FROM `user` WHERE `uid` = %d LIMIT 1",
		intval($b['uid'])
	);

	if (DBA::isResult($x) && !empty($x[0]['timezone'])) {
		$tz = $x[0]['timezone'];
	}

	$dw_username = DI::pConfig()->get($b['uid'],'dwpost','dw_username');
	$dw_password = DI::pConfig()->get($b['uid'],'dwpost','dw_password');
	$dw_blog = 'http://www.dreamwidth.org/interface/xmlrpc';

	if ($dw_username && $dw_password && $dw_blog) {
		$title = $b['title'];
		$post = BBCode::convert($b['body']);
		$post = XML::escape($post);
		$tags = Tag::getCSVByURIId($b['uri-id'], [Tag::HASHTAG]);

		$date = DateTimeFormat::convert($b['created'], $tz);
		$year = intval(substr($date,0,4));
		$mon  = intval(substr($date,5,2));
		$day  = intval(substr($date,8,2));
		$hour = intval(substr($date,11,2));
		$min  = intval(substr($date,14,2));

		$xml = <<< EOT
<?xml version="1.0" encoding="utf-8"?>
<methodCall><methodName>LJ.XMLRPC.postevent</methodName>
<params><param>
<value><struct>
<member><name>year</name><value><int>$year</int></value></member>
<member><name>mon</name><value><int>$mon</int></value></member>
<member><name>day</name><value><int>$day</int></value></member>
<member><name>hour</name><value><int>$hour</int></value></member>
<member><name>min</name><value><int>$min</int></value></member>
<member><name>event</name><value><string>$post</string></value></member>
<member><name>username</name><value><string>$dw_username</string></value></member>
<member><name>password</name><value><string>$dw_password</string></value></member>
<member><name>subject</name><value><string>$title</string></value></member>
<member><name>lineendings</name><value><string>unix</string></value></member>
<member><name>ver</name><value><int>1</int></value></member>
<member><name>props</name>
<value><struct>
<member><name>useragent</name><value><string>Friendica</string></value></member>
<member><name>taglist</name><value><string>$tags</string></value></member>
</struct></value></member>
</struct></value>
</param></params>
</methodCall>

EOT;

		Logger::log('dwpost: data: ' . $xml, Logger::DATA);

		if ($dw_blog !== 'test') {
			$x = DI::httpRequest()->post($dw_blog, $xml, ["Content-Type: text/xml"])->getBody();
		}

		Logger::log('posted to dreamwidth: ' . ($x) ? $x : '', Logger::DEBUG);
	}
}
