$output
		));
		$result = curl_exec($cSession);
		curl_close($cSession);
		return $result;
}
/* this function fetches all the data from a profile (bio, username, relationships, etc) 
	- $user is the id of the queried user
	
	- returns the array conversion of the json response
*/
function user_info($user) {
	global $user_settings;
	$info = api_get("accounts/" . $user);
	$rel = api_get("accounts/relationships?id=" . $user);
	return array(
		$info,
		$rel
	);
}
/* this function fetches the context (the previous posts and replies) of a specified post 
   - $post = ID of the post queried.
   
   - returns an array conversion of the json response
*/
function context($post) {
	global $srv;
	global $token;
	$curl = curl_init();
	curl_setopt($curl, CURLOPT_URL, "https://$srv/api/v1/statuses/$post/context");
	if (!is_null($token)) {
		curl_setopt($curl, CURLOPT_HTTPHEADER, array(
			'Authorization: Bearer ' . $token
		));
	}
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	$result = curl_exec($curl);
	curl_close($curl);
	return $result;
}
/* a function to fav or unfav a specified post 
	- $post = ID of the post queried.
	- $mode can be true if is a fav or false if it's an unfav
	
	- returns the number of favs of the post after the specified action or "error"
	  if there was an error performing the action
*/
function favourite($post, $mode) {
	$result = api_post(($mode == true ? "statuses/$post/favourite" : "statuses/$post/unfavourite"),array());
	if (isset($result['favourites_count'])) {
		return $result['favourites_count'];
	}
	else {
		return "error";
	}
}
/* a function to reblog or unreblog a specified post 
	- $post = ID of the post queried.
	- $mode can be true if is a reblog or false if it's an unreblog
	
	- returns the number of reblogs of the post after the specified action or "error"
	  if there was an error performing the action
*/
function reblog($post, $mode) {
	$result = api_post(($mode == true ? "statuses/$post/reblog" : "statuses/$post/unreblog"),array());
	if (isset($result['reblog']['reblogs_count'])) {
		return $result['reblog']['reblogs_count'];
	}
	elseif (isset($result['reblogs_count'])) {
		return $result['reblogs_count'];
	}
	else {
		return "error";
	}
}
/* function to delete a post 
   - $id is the id of the post to delete
   
   - returns 1 if the post was deleted succesfully or 0 if there was an error
*/
function delpost($id) {
	global $srv;
	global $token;
	if (!is_null($token)) {
		$curl = curl_init();
		curl_setopt($curl, CURLOPT_HEADER, false);
		curl_setopt($curl, CURLOPT_POST, 1);
		curl_setopt($curl, CURLOPT_URL, "https://$srv/api/v1/statuses/$id");
		curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "DELETE");
		curl_setopt($curl, CURLOPT_HTTPHEADER, array(
			'Authorization: Bearer ' . $token
		));
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
		$result = curl_exec($curl);
		curl_close($curl);
		$result = json_decode($result, true);
		if (empty($result)) {
			return "1";
		}
		else {
			return "0";
		}
	}
}
/* function to issue a vote to a poll
	- $id is the id of the poll to vote on
	
	- $choices is a comma separated string of the choices that will be voted.
*/
function vote($poll, $choices) {
	global $srv;
	global $token;
	if (!is_null($token)) {
		$cSession = curl_init();
		curl_setopt($cSession, CURLOPT_URL, "https://$srv/api/v1/polls/$poll/votes");
		curl_setopt($cSession, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($cSession, CURLOPT_POST, 1);
		curl_setopt($cSession, CURLOPT_HTTPHEADER, array(
			'Authorization: Bearer ' . $token
		));
		$query = "";
		$choicelist = explode(",",$choices);
		foreach($choicelist as $choice){
			$query .= "choices[]=$choice&";
		}
		
		curl_setopt($cSession, CURLOPT_POSTFIELDS, $query);
		$result = curl_exec($cSession);
		curl_close($cSession);
		return $result;
	}
	else {
		return false;
	}
}
/* function to send a new post to the logged in instance
	- $text = the body of the message
	- $media = array of uploaded media id's
	- $reply = the id of a post being replied to, can be null.
	- $markdown = specify if the post uses markdown (unused at this moment)
	- $scope = the scope of the post (public, private, unlisted or direct)
	- $sensitive = bool to specify if the post media is sensitive
	- $spoiler = string of the title of the post
	
	- returns the json of the api response
   */
function sendpost($text, $media, $reply = null, $markdown = false, $scope = "public", $sensitive = false, $spoiler = false) {
	global $srv;
	global $token;
	if (!is_null($token)) {
		$cSession = curl_init();
		curl_setopt($cSession, CURLOPT_URL, "https://$srv/api/v1/statuses");
		curl_setopt($cSession, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($cSession, CURLOPT_POST, 1);
		curl_setopt($cSession, CURLOPT_HTTPHEADER, array(
			'Authorization: Bearer ' . $token
		));
		$query = "";
		$query .= "status=" . urlencode(html_entity_decode($text, ENT_QUOTES)) . "&visibility=" . $scope;;
		if (!is_null($reply) && $reply != "null") {
			$query .= "&in_reply_to_id=" . $reply;
		}
		if ($markdown == true) {
			$query .= "&content_type=text/markdown";
		}
		if ($sensitive == 'true') {
			$query .= "&sensitive=true";
		}
		if ($spoiler == true) {
			$query .= "&spoiler_text=" . $spoiler;
		}
		if (!is_null($media)) {
			foreach ($media as $mid) {
				$query .= "&media_ids[]=" . $mid;
			}
		}
		
		curl_setopt($cSession, CURLOPT_POSTFIELDS, $query);
		$result = curl_exec($cSession);
		curl_close($cSession);
		return $result;
	}
	else {
		return false;
	}
}
/* uploads a file to the logged in instance.
	- $file = path of the file to upload on local storage
	
	- returns an array where: 
	    0: the ID of the uploaded file
		1: the url of the file (if the file isn't an image, returns a placeholder)
   */
function uploadpic($file) {
	global $srv;
	global $token;
	if (!is_null($token)) {
		$mime = get_mime($file);
		$info = pathinfo($file);
		$name = $info['basename'];
		$output = new CURLFile($file, $mime, $name);
			$cSession = curl_init();
			curl_setopt($cSession, CURLOPT_URL, "https://$srv/api/v1/media");
			curl_setopt($cSession, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($cSession, CURLOPT_POST, 1);
			curl_setopt($cSession, CURLOPT_HTTPHEADER, array(
				'Authorization: Bearer ' . $token
			));
			curl_setopt($cSession, CURLOPT_POSTFIELDS, array(
				'file' => $output
			));
			$result = curl_exec($cSession);
		curl_close($cSession);
		$array = json_decode($result, true);
		$ext = explode(".", $array['url']);
		$ext = end($ext);
		$ext = explode("?", $ext) [0];
		if (in_array($ext, array(
			'jpg',
			'jpeg',
			'gif',
			'png',
			'svg'
		))) {
			$file = $array['url'];
		}
		else {
			$file = "img/doc.png";
		}
		return json_encode(array(
			$array['id'],
			$file
		));
	}
	else {
		return false;
	}
}
/* this is used to register DashFE as an application on an instance 
   mostly used when logging in
   - $instance = the url of the instance where to log in
   
   - returns the array conversion of the json response
 */
function register_app($instance) {
	global $setting;
	$cSession = curl_init();
	curl_setopt($cSession, CURLOPT_URL, "https://$instance/api/v1/apps");
	curl_setopt($cSession, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($cSession, CURLOPT_HEADER, false);
	curl_setopt($cSession, CURLOPT_POST, 1);
	curl_setopt($cSession, CURLOPT_POSTFIELDS, http_build_query(array(
		'client_name' => $setting['appname'],
		'redirect_uris' => $setting['url'],
		'scopes' => 'read write follow'
	)));
	$result = curl_exec($cSession);
	curl_close($cSession);
	return json_decode($result, true);
}
/* this function will get all the notes (reblogs and favs) that has an specified post
	- $thread = the id of the post queried
	
	- returns an array with all the notes
	  each note is another array where:
	  0 = type of note ("reb" reblog or "fab" favorite)
	  1 = array of the details of the user, converted from the json of the api response.
 */ 
function getnotes($thread) {
	global $user_settings;
	global $token;
	global $srv;
	global $setting;
	global $logedin;
	@$reb = array(
		api_get("statuses/" . $thread . "/reblogged_by")
	);
	@$fab = array(
		api_get("statuses/" . $thread . "/favourited_by")
	);
	$limit = (count($reb[0]) > count($fab[0]) ? count($reb[0]) - 1 : count($fab[0]) - 1);
	$notes = array();
	$index = 0;
	for ($i = 0;$i <= $limit;$i++) {
		if (isset($reb[0][$i])) {
			$notes[$index][0] = "reb";
			$notes[$index][1] = $reb[0][$i];
			$index++;
		}
		if (isset($fab[0][$i])) {
			$notes[$index][0] = "fav";
			$notes[$index][1] = $fab[0][$i];
			$index++;
		}
	}
	return $notes;
}
/* this function will fetch replies of a post
	- $thread = the id of the post from where to fetch replies
	- $since = id of a post. If specified, the function will fetch the replies 
	           only since the specified id.
			   
	- returns an array with all the replies
	  each element is another array where:
	  'mode' = type of the reply (ancestor or descendant)
	  'content' = array of the contents of the reply, converted from the json of the api response.
 */ 
function getreplies($thread, $since = false) {
	global $user_settings;
	global $token;
	global $srv;
	global $setting;
	global $logedin;
	$context = json_decode(context($thread) , true);
	$array = array();
	if (!empty($context['ancestors'])) {
		if ($since == false) {
			foreach ($context['ancestors'] as $elem) {
				$elem['type'] = 'ancestor';
				$array[] = $elem;
			}
		}
	}
	$flag = 0;
	if (!empty($context['descendants'])) {
		foreach ($context['descendants'] as $elem) {
			if (($since != false && $flag == 1) || $since == false) {
				$elem['type'] = 'descendant';
				$array[] = $elem;
			}
			if ($since != false && $elem['id'] == $since) {
				$flag = 1;
			}
		}
	}
	$replies = array();
	foreach ($array as $item) {
		$reply['mode'] = "";
		if ($item['type'] == 'ancestor') {
			$reply['mode'] = "ancestor";
		}
		$replies[] = array(
			'mode' => $reply['mode'],
			'content' => $item
		);
	}
	return $replies;
}
/* this function takes some options from the init.php file and the user_settings cookie 
   and fetches all the posts of the appropiate timeline 
   - $query = an array with a set of elements generated by the file "include/init.php" 
   
   - returns an array of the posts list fetched converted from the json response of the api.  
   */
function timeline($query) {
	global $token;
	global $srv;
	$notes = "";
	
	$hq = array();
	$hq['limit'] = 10;
	$hq['only_media'] = ($query['text'] == "off" ? 'true' : 'false');
	if ($query['next']){
		$hq['max_id'] = $query['next'];
		$next = $query['next'];
	} elseif ($query['since']) {
		$hq['since_id'] = $query['since'];
	}
	
	switch ($query['mode']) {
		case "home":
			$array = api_get("timelines/home?".http_build_query($hq));
		break;
		case "federated":
			$array = api_get("timelines/public?".http_build_query($hq));
		break;
		case "tag":
			$array = api_get("timelines/tag/" . $query['tag'] . "?".http_build_query($hq));
		break;
		case "local":
			$array = api_get("timelines/public?local=true&".http_build_query($hq));
		break;
		case "user":
			$array = api_get("accounts/" . $query['user'] . "/statuses?".http_build_query($hq));
		break;
		case "thread":
			$array = array(
				api_get("statuses/" . $query['thread'])
			);
		break;
		case "favourites":
			$array = api_get("favourites?".http_build_query($hq));
		break;
		case "direct":
			$array = api_get("timelines/direct?".http_build_query($hq));
		break;
		case "list":
			$array = api_get("timelines/list/" . $query['list'] . "?".http_build_query($hq));
		break;
		case "bookmarks":
			$array = api_get("bookmarks?".http_build_query($hq));
		break;
		
		case "search":
			$array = api_getv2("search?limit=40&q=".$query['search']."{$next}")['statuses'];
		break;
		case "account":
			$info = api_get("accounts/verify_credentials");
			$array = api_get("accounts/" . $info['id'] . "/statuses?".http_build_query($hq));
		break;
		default:
			$array = api_get("timelines/public?".http_build_query($hq));
		break;
	}
	if (!is_array($array)) {
		return false;
	}
	$next = end($array) ['id'];
	$thread = array();
	/*
	foreach ($array as $elem) {
		if ($query['replies'] == "on" || $query['mode'] == "thread") {
			$thread[] = $elem;
		}
		else {
			if ($elem['in_reply_to_id'] == null) {
				$thread[] = $elem;
			}
		}
	}*/
 
	foreach ($array as $elem) {
		if ($query['replies'] == "on" || $query['mode'] == "thread") {
			$thread[] = $elem;
		}
		else {
			if ($elem['in_reply_to_id'] == null || $elem['in_reply_to_account_id'] == $query['uid']) {
				$thread[] = $elem;
			} else {
				$rel = api_get("accounts/relationships?id=" . $elem['in_reply_to_account_id']);
				if ($rel[0]['following']){
					$thread[] = $elem;
				}
			}
		}
	}
	return $thread;
}
// FUNCTIONS THAT HAVE TO DO WITH RENDERING STUFF FOR THE PAGE
/* this function is used to generate the html code of a poll */
function renderPoll($elem) {
	global $logedin;
	
	$output = "";
	$output .= "
";
	$votes = $elem['poll']['votes_count'];
	
	if ($elem['poll']['voted'] || $elem['poll']['expired']) {
		$output.= "Votes: $votes
";
		foreach ($elem['poll']['options'] as $option){
			$percentage = ($option['votes_count'] / $votes ) * 100;
			$output .= "
');
	$result = str_replace('", $result);
	$result = emojify($result, $elem['emojis']);
	if ($logedin){
		$result = preg_replace("/#([A-Za-z0-9\/\.]*)/", "#$1", $result);
	} else {
		$result = preg_replace("/#([A-Za-z0-9\/\.]*)/", "#$1", $result);
	}
	return $result;
}
// OTHER FUNCTIONS
/* the purpose of this function is to encode the auth token
   it is not used for now */
function msc($string, $action = 'e') {
	// you may change these values to your own
	$secret_key = 'yAmfVhZwm0749FSY24dC';
	$secret_iv = 'm37uvAeKjYLKdI1lPkcJ';
	$output = false;
	$encrypt_method = "AES-256-CBC";
	$key = hash('sha256', $secret_key);
	$iv = substr(hash('sha256', $secret_iv) , 0, 16);
	if ($action == 'e') {
		$output = base64_encode(openssl_encrypt($string, $encrypt_method, $key, 0, $iv));
	}
	else if ($action == 'd') {
		$output = openssl_decrypt(base64_decode($string) , $encrypt_method, $key, 0, $iv);
	}
	return $output;
}
/* this function extracts the urls from a text and return them in an array */
function get_urls($input) {
	$pattern = '$(https?://[a-z0-9_./?=&-~]+)(?![^<>]*>)$i'; 
	if (preg_match_all($pattern, $input, $matches)) {
		list($dummy, $links) = ($matches);
		return $links;
	}
	return false;
}
/* general function to check if one strings starts with a given search */ 	
function starts_with($string,$search){
	if (substr(strtolower($string),0,strlen($search)) == strtolower($search)){
		return true;
	}
	return false;
}
/* general function to check if one strings contains with a given search */ 
function contains($string,$search){
	if (is_numeric(strpos(strtolower($string),strtolower($search)))){
		return true;
	}
	return false;
}
/* this function just reduces an image to a 1x1 pixel image to get the overall color.
   */
function averageColor($url) {
	@$image = imagecreatefromstring(file_get_contents($url));
	if (!$image) {
		$mainColor = "CCCCCC";
	}
	else {
		$thumb = imagecreatetruecolor(1, 1);
		imagecopyresampled($thumb, $image, 0, 0, 0, 0, 1, 1, imagesx($image) , imagesy($image));
		$mainColor = strtoupper(dechex(imagecolorat($thumb, 0, 0)));
	}
	return $mainColor;
}
/* function used in the process of uploading a file */
function get_mime($filename) {
	$result = new finfo();
	if (is_resource($result) === true) {
		return $result->file($filename, FILEINFO_MIME_TYPE);
	}
	return false;
}
function sanitize($text){
	return preg_replace("/[^a-zA-Z0-9]+/", "", $text);
}
function themes($mode,$name = false){
	global $user_settings;
	switch ($mode){
		case "list":
			$themes = scandir("themes/");
			$themelist = array();
			foreach ($themes as $elem){
				if ($elem != ".." && $elem != "." && $elem != "custom" && is_dir("themes/".$elem)){
					$themelist[] = $elem;
				}
			}
			return $themelist;
			
		case "file":
			$theme = sanitize($user_settings['theme']);
			if (file_exists("themes/$theme/$name")){
				return "themes/$theme/$name";
			} else {
				return "$name";
			}
			
		case "get":
			$theme = sanitize($user_settings['theme']);
			if (file_exists("themes/$theme/$name")){
				return file_get_contents("themes/$theme/$name");
			} else {
				return file_get_contents("$name");
			}
	}
}
function time_elapsed_string($datetime, $full = false) {
    $now = new DateTime;
    $ago = new DateTime($datetime);
    $diff = $now->diff($ago);
    $diff->w = floor($diff->d / 7);
    $diff->d -= $diff->w * 7;
    $string = array(
        'y' => 'year',
        'm' => 'month',
        'w' => 'week',
        'd' => 'day',
        'h' => 'hour',
        'i' => 'minute',
        's' => 'second',
    );
    foreach ($string as $k => &$v) {
        if ($diff->$k) {
            $v = $diff->$k . ' ' . $v . ($diff->$k > 1 ? 's' : '');
        } else {
            unset($string[$k]);
        }
    }
    if (!$full) $string = array_slice($string, 0, 1);
    return $string ? implode(', ', $string) . ' ago' : 'just now';
}
function getHeaders($respHeaders) {
    $headers = array();
    $headerText = substr($respHeaders, 0, strpos($respHeaders, "\r\n\r\n"));
    foreach (explode("\r\n", $headerText) as $i => $line) {
        if ($i === 0) {
            $headers['http_code'] = $line;
        } else {
            list ($key, $value) = explode(': ', $line);
            $headers[$key] = $value;
        }
    }
    return $headerText;
}
', ' 
', $result);
	//$result = str_replace(''', "'", $result);
	foreach ($elem['mentions'] as $mention) {
		$result = str_replace("@" . $mention['username'], "@" . $mention['username'] . "", $result);
	}
	//$result = preg_replace("/(?$1