<?php
/**
 * Name: pump.io Post Connector
 * Description: Post to pump.io
 * Version: 0.1
 * Author: Michael Vogel <http://pirati.ca/profile/heluecht>
 */
require('addon/pumpio/oauth/http.php');
require('addon/pumpio/oauth/oauth_client.php');

define('PUMPIO_DEFAULT_POLL_INTERVAL', 5); // given in minutes

function pumpio_install() {
    register_hook('post_local',           'addon/pumpio/pumpio.php', 'pumpio_post_local');
    register_hook('notifier_normal',      'addon/pumpio/pumpio.php', 'pumpio_send');
    register_hook('jot_networks',         'addon/pumpio/pumpio.php', 'pumpio_jot_nets');
    register_hook('connector_settings',      'addon/pumpio/pumpio.php', 'pumpio_settings');
    register_hook('connector_settings_post', 'addon/pumpio/pumpio.php', 'pumpio_settings_post');
    register_hook('cron', 'addon/pumpio/pumpio.php', 'pumpio_cron');

}
function pumpio_uninstall() {
    unregister_hook('post_local',       'addon/pumpio/pumpio.php', 'pumpio_post_local');
    unregister_hook('notifier_normal',  'addon/pumpio/pumpio.php', 'pumpio_send');
    unregister_hook('jot_networks',     'addon/pumpio/pumpio.php', 'pumpio_jot_nets');
    unregister_hook('connector_settings',      'addon/pumpio/pumpio.php', 'pumpio_settings');
    unregister_hook('connector_settings_post', 'addon/pumpio/pumpio.php', 'pumpio_settings_post');
    unregister_hook('cron', 'addon/pumpio/pumpio.php', 'pumpio_cron');
}

function pumpio_module() {}

function pumpio_content(&$a) {

	if(! local_user()) {
		notice( t('Permission denied.') . EOL);
		return '';
	}

	if (isset($a->argv[1]))
		switch ($a->argv[1]) {
			case "connect":
				$o = pumpio_connect($a);
				break;
			default:
				$o = print_r($a->argv, true);
				break;
		}
	else
		$o = pumpio_connect($a);

	return $o;
}

function pumpio_registerclient($a, $host) {

	$url = "https://".$host."/api/client/register";

        $params = array();

	$application_name  = get_config('pumpio', 'application_name');

	if ($application_name == "")
		$application_name = $a->get_hostname();

        $params["type"] = "client_associate";
        $params["contacts"] = $a->config['admin_email'];
        $params["application_type"] = "native";
        $params["application_name"] = $application_name;
        $params["logo_url"] = $a->get_baseurl()."/images/friendica-256.png";
        $params["redirect_uris"] = $a->get_baseurl()."/pumpio/connect";

        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
        curl_setopt($ch, CURLOPT_POST,1);
        curl_setopt($ch, CURLOPT_POSTFIELDS,$params);
        curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");

        $s = curl_exec($ch);
        $curl_info = curl_getinfo($ch);

        if ($curl_info["http_code"] == "200") {
                $values = json_decode($s);
		return($values);
                $pumpio = array();
                $pumpio["client_id"] = $values->client_id;
                $pumpio["client_secret"] = $values->client_secret;
                print_r($values);
        }
	return(false);
}

function pumpio_connect($a) {
	// Start a session.  This is necessary to hold on to  a few keys the callback script will also need
	session_start();

	// Define the needed keys
	$consumer_key = get_pconfig(local_user(), 'pumpio','consumer_key');
	$consumer_secret = get_pconfig(local_user(), 'pumpio','consumer_secret');
	$hostname = get_pconfig(local_user(), 'pumpio','host');

	if ((($consumer_key == "") OR ($consumer_secret == "")) AND ($hostname != "")) {
		$clientdata = pumpio_registerclient($a, $hostname);
		set_pconfig(local_user(), 'pumpio','consumer_key', $clientdata->client_id);
		set_pconfig(local_user(), 'pumpio','consumer_secret', $clientdata->client_secret);

		$consumer_key = get_pconfig(local_user(), 'pumpio','consumer_key');
		$consumer_secret = get_pconfig(local_user(), 'pumpio','consumer_secret');
	}

	if (($consumer_key == "") OR ($consumer_secret == ""))
		return;

	// The callback URL is the script that gets called after the user authenticates with pumpio
	$callback_url = $a->get_baseurl()."/pumpio/connect";

	// Let's begin.  First we need a Request Token.  The request token is required to send the user
	// to pumpio's login page.

	// Create a new instance of the TumblrOAuth library.  For this step, all we need to give the library is our
	// Consumer Key and Consumer Secret
	$client = new oauth_client_class;
	$client->debug = 1;
	$client->server = '';
	$client->oauth_version = '1.0a';
	$client->request_token_url = 'https://'.$hostname.'/oauth/request_token';
	$client->dialog_url = 'https://'.$hostname.'/oauth/authorize';
	$client->access_token_url = 'https://'.$hostname.'/oauth/access_token';
	$client->url_parameters = false;
	$client->authorization_header = true;
	$client->redirect_uri = $callback_url;
	$client->client_id = $consumer_key;
	$client->client_secret = $consumer_secret;

	if (($success = $client->Initialize())) {
		if (($success = $client->Process())) {
			if (strlen($client->access_token)) {
				set_pconfig(local_user(), "pumpio", "oauth_token", $client->access_token);
				set_pconfig(local_user(), "pumpio", "oauth_token_secret", $client->access_token_secret);
			}
		}
		$success = $client->Finalize($success);
	}
        if($client->exit)
	    $o = 'Could not connect to pumpio. Refresh the page or try again later.';

        if($success) {
		$o .= t("You are now authenticated to pumpio.");
		$o .= '<br /><a href="'.$a->get_baseurl().'/settings/connectors">'.t("return to the connector page").'</a>';
	}

	return($o);
}

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

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


function pumpio_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/pumpio/pumpio.css' . '" media="all" />' . "\r\n";

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

    $enabled = get_pconfig(local_user(),'pumpio','post');
    $checked = (($enabled) ? ' checked="checked" ' : '');

    $def_enabled = get_pconfig(local_user(),'pumpio','post_by_default');
    $def_checked = (($def_enabled) ? ' checked="checked" ' : '');

    $public_enabled = get_pconfig(local_user(),'pumpio','public');
    $public_checked = (($public_enabled) ? ' checked="checked" ' : '');

    $mirror_enabled = get_pconfig(local_user(),'pumpio','mirror');
    $mirror_checked = (($mirror_enabled) ? ' checked="checked" ' : '');

    $servername = get_pconfig(local_user(), "pumpio", "host");
    $username = get_pconfig(local_user(), "pumpio", "user");

    /* Add some HTML to the existing form */

    $s .= '<div class="settings-block">';
    $s .= '<h3>' . t('Pump.io Post Settings') . '</h3>';

    $s .= '<div id="pumpio-username-wrapper">';
    $s .= '<label id="pumpio-username-label" for="pumpio-username">'.t('pump.io username (without the servername)').'</label>';
    $s .= '<input id="pumpio-username" type="text" name="pumpio_user" value="'.$username.'" />';
    $s .= '</div><div class="clear"></div>';

    $s .= '<div id="pumpio-servername-wrapper">';
    $s .= '<label id="pumpio-servername-label" for="pumpio-servername">'.t('pump.io servername (without "http://" or "https://" )').'</label>';
    $s .= '<input id="pumpio-servername" type="text" name="pumpio_host" value="'.$servername.'" />';
    $s .= '</div><div class="clear"></div>';

    if (($username != '') AND ($servername != '')) {

	$oauth_token = get_pconfig(local_user(), "pumpio", "oauth_token");
	$oauth_token_secret = get_pconfig(local_user(), "pumpio", "oauth_token_secret");

	$s .= '<div id="pumpio-password-wrapper">';
	if (($oauth_token == "") OR ($oauth_token_secret == "")) {
		$s .= '<div id="pumpio-authenticate-wrapper">';
		$s .= '<a href="'.$a->get_baseurl().'/pumpio/connect">'.t("Authenticate your pump.io connection").'</a>';
		$s .= '</div><div class="clear"></div>';

		//$s .= t("You are not authenticated to pumpio");
	} else {
		$s .= '<div id="pumpio-enable-wrapper">';
		$s .= '<label id="pumpio-enable-label" for="pumpio-checkbox">' . t('Enable pump.io Post Plugin') . '</label>';
		$s .= '<input id="pumpio-checkbox" type="checkbox" name="pumpio" value="1" ' . $checked . '/>';
		$s .= '</div><div class="clear"></div>';

		$s .= '<div id="pumpio-bydefault-wrapper">';
		$s .= '<label id="pumpio-bydefault-label" for="pumpio-bydefault">' . t('Post to pump.io by default') . '</label>';
		$s .= '<input id="pumpio-bydefault" type="checkbox" name="pumpio_bydefault" value="1" ' . $def_checked . '/>';
		$s .= '</div><div class="clear"></div>';

		$s .= '<div id="pumpio-public-wrapper">';
		$s .= '<label id="pumpio-public-label" for="pumpio-public">' . t('Should posts be public?') . '</label>';
		$s .= '<input id="pumpio-public" type="checkbox" name="pumpio_public" value="1" ' . $public_checked . '/>';
		$s .= '</div><div class="clear"></div>';

		$s .= '<div id="pumpio-mirror-wrapper">';
		$s .= '<label id="pumpio-mirror-label" for="pumpio-mirror">' . t('Mirror all public posts') . '</label>';
		$s .= '<input id="pumpio-mirror" type="checkbox" name="pumpio_mirror" value="1" ' . $mirror_checked . '/>';
		$s .= '</div><div class="clear"></div>';

		$s .= '<div id="pumpio-delete-wrapper">';
		$s .= '<label id="pumpio-delete-label" for="pumpio-delete">' . t('Check to delete this preset') . '</label>';
		$s .= '<input id="pumpio-delete" type="checkbox" name="pumpio_delete" value="1" />';
		$s .= '</div><div class="clear"></div>';

		//$s .= '<div id="pumpio-authenticate-wrapper">';
		//$s .= '<a href="'.$a->get_baseurl().'/pumpio/connect">'.t("Reauthenticate your pump.io connection").'</a>';
		//$s .= '</div><div class="clear"></div>';

	}

	$s .= '</div><div class="clear"></div>';
    }

    /* provide a submit button */

    $s .= '<div class="settings-submit-wrapper" ><input type="submit" id="pumpio-submit" name="pumpio-submit" class="settings-submit" value="' . t('Submit') . '" /></div></div>';

}


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

	if(x($_POST,'pumpio-submit')) {
		if(x($_POST,'pumpio_delete')) {
			set_pconfig(local_user(),'pumpio','consumer_key','');
			set_pconfig(local_user(),'pumpio','consumer_secret','');
			set_pconfig(local_user(),'pumpio','host','');
			set_pconfig(local_user(),'pumpio','oauth_token','');
			set_pconfig(local_user(),'pumpio','oauth_token_secret','');
			set_pconfig(local_user(),'pumpio','post',false);
			set_pconfig(local_user(),'pumpio','post_by_default',false);
			set_pconfig(local_user(),'pumpio','user','');
		} else {
			// filtering the username if it is filled wrong
			$user = $_POST['pumpio_user'];
			if (strstr($user, "@")) {
				$pos = strpos($user, "@");
				if ($pos > 0)
					$user = substr($user, 0, $pos);
			}

			// Filtering the hostname if someone is entering it with "http"
			$host = $_POST['pumpio_host'];
			$host = trim($host);
			$host = str_replace(array("https://", "http://"), array("", ""), $host);

			set_pconfig(local_user(),'pumpio','post',intval($_POST['pumpio']));
			set_pconfig(local_user(),'pumpio','host',$host);
			set_pconfig(local_user(),'pumpio','user',$user);
			set_pconfig(local_user(),'pumpio','public',$_POST['pumpio_public']);
			set_pconfig(local_user(),'pumpio','mirror',$_POST['pumpio_mirror']);
			set_pconfig(local_user(),'pumpio','post_by_default',intval($_POST['pumpio_bydefault']));
		}
	}
}

function pumpio_post_local(&$a,&$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;

	$pumpio_post   = intval(get_pconfig(local_user(),'pumpio','post'));

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

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

	if(! $pumpio_enable)
		return;

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

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


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

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

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

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

	// if post comes from pump.io don't send it back
	if($b['app'] == "pump.io")
		return;

	$oauth_token = get_pconfig($b['uid'], "pumpio", "oauth_token");
	$oauth_token_secret = get_pconfig($b['uid'], "pumpio", "oauth_token_secret");
	$consumer_key = get_pconfig($b['uid'], "pumpio","consumer_key");
	$consumer_secret = get_pconfig($b['uid'], "pumpio","consumer_secret");

	$host = get_pconfig($b['uid'], "pumpio", "host");
	$user = get_pconfig($b['uid'], "pumpio", "user");
	$public = get_pconfig($b['uid'], "pumpio", "public");

	if($oauth_token && $oauth_token_secret) {

		require_once('include/bbcode.php');

		$title = trim($b['title']);

		if ($title != '')
			$title = "<h4>".$title."</h4>";

		$params = array();

		$params["verb"] = "post";

		$params["object"] = array(
					'objectType' => "note",
					'content' => $title.bbcode($b['body'], false, false));

		if ($public)
			$params["to"] = array(Array(
						"objectType" => "collection",
						"id" => "http://activityschema.org/collection/public"));

		$client = new oauth_client_class;
		$client->oauth_version = '1.0a';
		$client->url_parameters = false;
		$client->authorization_header = true;
		$client->access_token = $oauth_token;
		$client->access_token_secret = $oauth_token_secret;
		$client->client_id = $consumer_key;
		$client->client_secret = $consumer_secret;

		$username = $user.'@'.$host;

		$success = $client->CallAPI(
					'https://'.$host.'/api/user/'.$user.'/feed',
					'POST', $params, array('FailOnAccessError'=>true, 'RequestContentType'=>'application/json'), $user);

		if($success)
			logger('pumpio_send '.$username.': success');
		else
			logger('pumpio_send '.$username.': general error: ' . print_r($user,true));

	}
}

function pumpio_cron($a,$b) {
        $last = get_config('pumpio','last_poll');

        $poll_interval = intval(get_config('pumpio','poll_interval'));
        if(! $poll_interval)
                $poll_interval = PUMPIO_DEFAULT_POLL_INTERVAL;

        if($last) {
                $next = $last + ($poll_interval * 60);
                if($next > time()) {
                        logger('pumpio: poll intervall not reached');
                        return;
                }
        }
        logger('pumpio: cron_start');

        $r = q("SELECT * FROM `pconfig` WHERE `cat` = 'pumpio' AND `k` = 'mirror' AND `v` = '1' ORDER BY RAND() ");
        if(count($r)) {
                foreach($r as $rr) {
                        logger('pumpio: fetching for user '.$rr['uid']);
                        pumpio_fetchtimeline($a, $rr['uid']);
                }
        }

        logger('pumpio: cron_end');

        set_config('pumpio','last_poll', time());
}

function pumpio_fetchtimeline($a, $uid) {
	$ckey    = get_pconfig($uid, 'pumpio', 'consumer_key');
	$csecret = get_pconfig($uid, 'pumpio', 'consumer_secret');
	$otoken  = get_pconfig($uid, 'pumpio', 'oauth_token');
	$osecret = get_pconfig($uid, 'pumpio', 'oauth_token_secret');
	$lastdate = get_pconfig($uid, 'pumpio', 'lastdate');
	$hostname = get_pconfig($uid, 'pumpio','host');
	$username = get_pconfig($uid, "pumpio", "user");

	$application_name  = get_config('pumpio', 'application_name');

	if ($application_name == "")
		$application_name = $a->get_hostname();

	$first_time = ($lastdate == "");

	$client = new oauth_client_class;
	$client->oauth_version = '1.0a';
	$client->authorization_header = true;
	$client->url_parameters = false;

	$client->client_id = $ckey;
	$client->client_secret = $csecret;
	$client->access_token = $otoken;
	$client->access_token_secret = $osecret;

	$url = 'https://'.$hostname.'/api/user/'.$username.'/feed/major';

	logger('pumpio: fetching for user '.$uid.' '.$url.' C:'.$client->client_id.' CS:'.$client->client_secret.' T:'.$client->access_token.' TS:'.$client->access_token_secret);

	$username = $user.'@'.$host;

	$success = $client->CallAPI($url, 'GET', array(), array('FailOnAccessError'=>true), $user);

	if (!$success) {
		logger('pumpio: error fetching posts for user '.$uid." ".$username." ".print_r($user, true));
		return;
	}

	$posts = array_reverse($user->items);

	$initiallastdate = $lastdate;
	$lastdate = '';

	if (count($posts)) {
		foreach ($posts as $post) {
			if ($post->generator->published <= $initiallastdate)
				continue;

			if ($lastdate < $post->generator->published)
				$lastdate = $post->generator->published;

			if ($first_time)
				continue;

			$receiptians = array();
			if (@is_array($post->cc))
				$receiptians = array_merge($receiptians, $post->cc);

			if (@is_array($post->to))
				$receiptians = array_merge($receiptians, $post->to);

			$public = false;
			foreach ($receiptians AS $receiver)
				if (is_string($receiver->objectType))
					if ($receiver->id == "http://activityschema.org/collection/public")
						$public = true;

			if ($public AND !strstr($post->generator->displayName, $application_name)) {
				require_once('include/html2bbcode.php');

				$_SESSION["authenticated"] = true;
				$_SESSION["uid"] = $uid;

				unset($_REQUEST);
				$_REQUEST["type"] = "wall";
				$_REQUEST["api_source"] = true;
				$_REQUEST["profile_uid"] = $uid;
				$_REQUEST["source"] = "pump.io";

				if ($post->object->displayName != "")
					$_REQUEST["title"] = html2bbcode($post->object->displayName);
				else
					$_REQUEST["title"] = "";

				$_REQUEST["body"] = html2bbcode($post->object->content);

				if ($post->object->fullImage->url != "")
					$_REQUEST["body"] = "[url=".$post->object->fullImage->url."][img]".$post->object->image->url."[/img][/url]\n".$_REQUEST["body"];

				logger('pumpio: posting for user '.$uid);

				require_once('mod/item.php');
				//print_r($_REQUEST);
				item_post($a);
				logger('pumpio: posting done - user '.$uid);
			}
		}
	}

	//$lastdate = '2013-05-16T20:22:12Z';

	if ($lastdate != 0)
		set_pconfig($uid,'pumpio','lastdate', $lastdate);
}