<?php

/**
 * Name: Diaspora Post Connector
 * Description: Post to Diaspora
 * Version: 0.1
 * Author: Michael Vogel <heluecht@pirati.ca>
 * Status: Unsupported
 */

function diaspora_install() {
	register_hook('post_local',           'addon/diaspora/diaspora.php', 'diaspora_post_local');
	register_hook('notifier_normal',      'addon/diaspora/diaspora.php', 'diaspora_send');
	register_hook('jot_networks',         'addon/diaspora/diaspora.php', 'diaspora_jot_nets');
	register_hook('connector_settings',      'addon/diaspora/diaspora.php', 'diaspora_settings');
	register_hook('connector_settings_post', 'addon/diaspora/diaspora.php', 'diaspora_settings_post');
	register_hook('queue_predeliver', 'addon/diaspora/diaspora.php', 'diaspora_queue_hook');
}
function diaspora_uninstall() {
	unregister_hook('post_local',       'addon/diaspora/diaspora.php', 'diaspora_post_local');
	unregister_hook('notifier_normal',  'addon/diaspora/diaspora.php', 'diaspora_send');
	unregister_hook('jot_networks',     'addon/diaspora/diaspora.php', 'diaspora_jot_nets');
	unregister_hook('connector_settings',      'addon/diaspora/diaspora.php', 'diaspora_settings');
	unregister_hook('connector_settings_post', 'addon/diaspora/diaspora.php', 'diaspora_settings_post');
	unregister_hook('queue_predeliver', 'addon/diaspora/diaspora.php', 'diaspora_queue_hook');
}


function diaspora_jot_nets(&$a,&$b) {
    if(! local_user())
        return;

    $diaspora_post = get_pconfig(local_user(),'diaspora','post');
    if(intval($diaspora_post) == 1) {
        $diaspora_defpost = get_pconfig(local_user(),'diaspora','post_by_default');
        $selected = ((intval($diaspora_defpost) == 1) ? ' checked="checked" ' : '');
        $b .= '<div class="profile-jot-net"><input type="checkbox" name="diaspora_enable"' . $selected . ' value="1" /> '
            . t('Post to Diaspora') . '</div>';
    }
}

function diaspora_queue_hook(&$a,&$b) {
	$hostname = $a->get_hostname();

	$qi = q("SELECT * FROM `queue` WHERE `network` = '%s'",
		dbesc(NETWORK_DIASPORA2)
	);
	if(! count($qi))
		return;

	require_once('include/queue_fn.php');

	foreach($qi as $x) {
		if($x['network'] !== NETWORK_DIASPORA2)
			continue;

		logger('diaspora_queue: run');

		$r = q("SELECT `user`.* FROM `user` LEFT JOIN `contact` on `contact`.`uid` = `user`.`uid`
			WHERE `contact`.`self` = 1 AND `contact`.`id` = %d LIMIT 1",
			intval($x['cid'])
		);
		if(! count($r))
			continue;

		$userdata = $r[0];

		$diaspora_username = get_pconfig($userdata['uid'],'diaspora','diaspora_username');
		$diaspora_password = get_pconfig($userdata['uid'],'diaspora','diaspora_password');
		$diaspora_url = get_pconfig($userdata['uid'],'diaspora','diaspora_url');

		$success = false;

		if($diaspora_url && $diaspora_username && $diaspora_password) {
			require_once("addon/diaspora/diasphp.php");

                        logger('diaspora_queue: able to post for user '.$diaspora_username);

			$z = unserialize($x['content']);

			$post = $z['post'];

			logger('diaspora_queue: post: '.$post, LOGGER_DATA);

			try {
				logger('diaspora_queue: prepare', LOGGER_DEBUG);
				$conn = new Diasphp($diaspora_url);
				logger('diaspora_queue: try to log in '.$diaspora_username, LOGGER_DEBUG);
				$conn->login($diaspora_username, $diaspora_password);
				logger('diaspora_queue: try to send '.$body, LOGGER_DEBUG);
				$conn->post($post, $hostname);

                                logger('diaspora_queue: send '.$userdata['uid'].' success', LOGGER_DEBUG);

                                $success = true;

                                remove_queue_item($x['id']);
			} catch (Exception $e) {
				logger("diaspora_queue: Send ".$userdata['uid']." failed: ".$e->getMessage(), LOGGER_DEBUG);
			}
		} else
			logger('diaspora_queue: send '.$userdata['uid'].' missing username or password', LOGGER_DEBUG);

		if (!$success) {
			logger('diaspora_queue: delayed');
			update_queue_time($x['id']);
		}
	}
}

function diaspora_settings(&$a,&$s) {

	if(! local_user())
		return;

	/* Add our stylesheet to the page so we can make our settings look nice */

	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/diaspora/diaspora.css' . '" media="all" />' . "\r\n";

	/* Get the current state of our config variables */

	$enabled = get_pconfig(local_user(),'diaspora','post');
	$checked = (($enabled) ? ' checked="checked" ' : '');
	$css = (($enabled) ? '' : '-disabled');

	$def_enabled = get_pconfig(local_user(),'diaspora','post_by_default');

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

	$diaspora_username = get_pconfig(local_user(), 'diaspora', 'diaspora_username');
	$diaspora_password = get_pconfig(local_user(), 'diaspora', 'diaspora_password');
	$diaspora_url = get_pconfig(local_user(), 'diaspora', 'diaspora_url');

	$status = "";

	if ($diaspora_username AND $diaspora_password AND $diaspora_url) {
		try {
			require_once("addon/diaspora/diasphp.php");

			$conn = new Diasphp($diaspora_url);
			$conn->login($diaspora_username, $diaspora_password);
		} catch (Exception $e) {
			$status = t("Can't login to your Diaspora account. Please check username and password and ensure you used the complete address (including http...)");
		}
	}

	/* Add some HTML to the existing form */

	$s .= '<span id="settings_diaspora_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_diaspora_expanded\'); openClose(\'settings_diaspora_inflated\');">';
	$s .= '<img class="connector'.$css.'" src="images/diaspora-logo.png" /><h3 class="connector">'. t('Diaspora Export').'</h3>';
	$s .= '</span>';
	$s .= '<div id="settings_diaspora_expanded" class="settings-block" style="display: none;">';
	$s .= '<span class="fakelink" onclick="openClose(\'settings_diaspora_expanded\'); openClose(\'settings_diaspora_inflated\');">';
	$s .= '<img class="connector'.$css.'" src="images/diaspora-logo.png" /><h3 class="connector">'. t('Diaspora Export').'</h3>';
	$s .= '</span>';

	if ($status) {
		$s .= '<div id="diaspora-status-wrapper"><strong>';
		$s .= $status;
		$s .= '</strong></div><div class="clear"></div>';
	}

	$s .= '<div id="diaspora-enable-wrapper">';
	$s .= '<label id="diaspora-enable-label" for="diaspora-checkbox">' . t('Enable Diaspora Post Plugin') . '</label>';
	$s .= '<input id="diaspora-checkbox" type="checkbox" name="diaspora" value="1" ' . $checked . '/>';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="diaspora-username-wrapper">';
	$s .= '<label id="diaspora-username-label" for="diaspora-username">' . t('Diaspora username') . '</label>';
	$s .= '<input id="diaspora-username" type="text" name="diaspora_username" value="' . $diaspora_username . '" />';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="diaspora-password-wrapper">';
	$s .= '<label id="diaspora-password-label" for="diaspora-password">' . t('Diaspora password') . '</label>';
	$s .= '<input id="diaspora-password" type="password" name="diaspora_password" value="' . $diaspora_password . '" />';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="diaspora-url-wrapper">';
	$s .= '<label id="diaspora-url-label" for="diaspora-url">' . t('Diaspora site URL') . '</label>';
	$s .= '<input id="diaspora-url" type="text" name="diaspora_url" value="' . $diaspora_url . '" />';
	$s .= '</div><div class="clear"></div>';

	$s .= '<div id="diaspora-bydefault-wrapper">';
	$s .= '<label id="diaspora-bydefault-label" for="diaspora-bydefault">' . t('Post to Diaspora by default') . '</label>';
	$s .= '<input id="diaspora-bydefault" type="checkbox" name="diaspora_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="diaspora-submit" name="diaspora-submit" class="settings-submit" value="' . t('Save Settings') . '" /></div></div>';

}


function diaspora_settings_post(&$a,&$b) {

	if(x($_POST,'diaspora-submit')) {

		set_pconfig(local_user(),'diaspora','post',intval($_POST['diaspora']));
		set_pconfig(local_user(),'diaspora','post_by_default',intval($_POST['diaspora_bydefault']));
		set_pconfig(local_user(),'diaspora','diaspora_username',trim($_POST['diaspora_username']));
		set_pconfig(local_user(),'diaspora','diaspora_password',trim($_POST['diaspora_password']));
		set_pconfig(local_user(),'diaspora','diaspora_url',trim($_POST['diaspora_url']));

	}

}

function diaspora_post_local(&$a,&$b) {

	if($b['edit'])
		return;

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

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

	$diaspora_post   = intval(get_pconfig(local_user(),'diaspora','post'));

	$diaspora_enable = (($diaspora_post && x($_REQUEST,'diaspora_enable')) ? intval($_REQUEST['diaspora_enable']) : 0);

	if($_REQUEST['api_source'] && intval(get_pconfig(local_user(),'diaspora','post_by_default')))
		$diaspora_enable = 1;

    if(! $diaspora_enable)
       return;

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




function diaspora_send(&$a,&$b) {
	$hostname = $a->get_hostname();

	logger('diaspora_send: invoked');

	if($b['deleted'] || $b['private'] || ($b['created'] !== $b['edited']))
		return;

	if(! strstr($b['postopts'],'diaspora'))
		return;

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

	logger('diaspora_send: prepare posting', LOGGER_DEBUG);

	$diaspora_username = get_pconfig($b['uid'],'diaspora','diaspora_username');
	$diaspora_password = get_pconfig($b['uid'],'diaspora','diaspora_password');
	$diaspora_url = get_pconfig($b['uid'],'diaspora','diaspora_url');

	if($diaspora_url && $diaspora_username && $diaspora_password) {

		logger('diaspora_send: all values seem to be okay', LOGGER_DEBUG);

		require_once('include/bb2diaspora.php');
		$tag_arr = array();
		$tags = '';
		$x = preg_match_all('/\#\[(.*?)\](.*?)\[/',$b['tag'],$matches,PREG_SET_ORDER);

		if($x) {
			foreach($matches as $mtch) {
				$tag_arr[] = $mtch[2];
			}
		}
		if(count($tag_arr))
			$tags = implode(',',$tag_arr);

		$title = $b['title'];
		$body = $b['body'];
		// Insert a newline before and after a quote
		$body = str_ireplace("[quote", "\n\n[quote", $body);
		$body = str_ireplace("[/quote]", "[/quote]\n\n", $body);

		// Removal of tags and mentions
		// #-tags
		$body = preg_replace('/#\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', '#$2', $body);
 		// @-mentions
		$body = preg_replace('/@\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', '@$2', $body);

		// remove multiple newlines
		do {
			$oldbody = $body;
                        $body = str_replace("\n\n\n", "\n\n", $body);
                } while ($oldbody != $body);

		// convert to markdown
		$body = bb2diaspora($body, false, true);

		// Adding the title
		if(strlen($title))
			$body = "## ".html_entity_decode($title)."\n\n".$body;

		require_once("addon/diaspora/diasphp.php");

		try {
			logger('diaspora_send: prepare', LOGGER_DEBUG);
			$conn = new Diasphp($diaspora_url);
			logger('diaspora_send: try to log in '.$diaspora_username, LOGGER_DEBUG);
			$conn->login($diaspora_username, $diaspora_password);
			logger('diaspora_send: try to send '.$body, LOGGER_DEBUG);

			//throw new Exception('Test');
			$conn->post($body, $hostname);

			logger('diaspora_send: success');
		} catch (Exception $e) {
			logger("diaspora_send: Error submitting the post: " . $e->getMessage());

			logger('diaspora_send: requeueing '.$b['uid'], LOGGER_DEBUG);

			$r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `self`", $b['uid']);
			if (count($r))
				$a->contact = $r[0]["id"];

			$s = serialize(array('url' => $url, 'item' => $b['id'], 'post' => $body));
			require_once('include/queue_fn.php');
			add_to_queue($a->contact,NETWORK_DIASPORA2,$s);
			notice(t('Diaspora post failed. Queued for retry.').EOL);
		}
	}
}
