univ-pau-ics/build/router/controller/ics.php

<?php

	namespace router\controller;

	use \database\core\DatabaseDriver;


	class ics{


		private $diplome_id;

		/* PRE-CALL
		*
		* @url<String>									Calling URI
		*
		*/
		public function __construct($url){
			$this->diplome_id = $url['diplome_id'];

		}


		/* CALL
		*
		*/
		public function download(){

			/* [1] Check .ics file
			=========================================================*/
			/* (1) Set file name */
			$file_name = __ROOT__."/tmp/".$this->diplome_id.".ics";

			/* (2) Check if exists */
			if( !file_exists($file_name) )
				die("An error occured. Please contact the developers.\n");


			/* [2] Display file
			=========================================================*/
			/* (1) Headers */
			header('Content-Type: text/calendar; charset=utf-8');
			header('Content-Disposition: attachment; filename='.$this->diplome_id.'.ics');

			/* (2) Body */
			readfile($file_name);


		}



		public function info(){

			/* [1] Get database data
			=========================================================*/
			/* (1) Get the list of available events */
			$sqlr = DatabaseDriver::getPDO()->prepare("SELECT * FROM event WHERE id_diplome = :idd");
			$sqlr->execute([ ':idd' => $this->diplome_id ]);
			$d_cols = $sqlr->fetchAll();

			/* (2) Manage error */
			if( !$d_cols )
				die("Correction not available for this diplome");



			echo "<form method='POST' action='/correct/".$this->diplome_id."'>";

				foreach($d_cols as $data){

					$id       = $data['id_event'];
					$basename = $data['basename'];
					$color    = $data['color'];
					$name     = $data['name'];

					echo "$basename <input type='text' style='display: inline-block; margin: 1em .2em; padding: .2em; border: none; background-color: $color;' name='name[$id]' value='$name'><br>";

				}

				echo "<input type='submit' value='SAVE'>";
			echo "</form>";

		}



		public function correct(){


			/* [1] Update data
			=========================================================*/ {

				/* (1) Check $_POST['name'] */
				if( !isset($_POST['name']) || !is_array($_POST['name']) )
					die("No data received");

				/* (2) Store corrections */
				foreach($_POST['name'] as $id=>$correct){

					if( !empty(trim($correct)) ){
						$sqlr = DatabaseDriver::getPDO()->prepare("UPDATE event SET name = :name WHERE id_event = :ide");
						$sqlr->execute([ ':name' => $correct, ':ide' => $id ]);

					}

				}

			}




			/* [2] Update file one the fly
			=========================================================*/
			/* (1) Get corrections */
			$sqlr = DatabaseDriver::getPDO()->prepare("SELECT CONCAT(basename, color) as uid, name FROM event WHERE id_diplome = :idd");
			$sqlr->execute([ ':idd' => $this->diplome_id ]);

			/* (2) Manage error */
			if( !($fetched=$sqlr->fetchAll()) )
				die("Cannot update the .ics file now");

			/* (3) Format data */
			$corrections = [];

			foreach($fetched as $c)
				$corrections[$c['uid']] = $c['name'];


			/* (3) Get file pointer */
			$fp = file_get_contents(__ROOT__."/tmp/".$this->diplome_id.".ics");

			/* (4) Manage error */
			if( !$fp )
				die("Cannot update the .ics file now");


			/* (4) Read line by line */
			$line = explode("\n", $fp);

			for( $l = 0 ; $l < count($line)-1 ; $l++ ){

				// {1} If got the right pointer //
				if( preg_match('@^DESCRIPTION:(.+#[\da-f]{6})$@', $line[$l], $m) ){

					// {2} If is in the list of correction //
					if( !isset($corrections[$m[1]]) )
						continue;

					// {3} Rewrite name //
					$line[++$l] = "SUMMARY:".$corrections[$m[1]];

				}

			}


			/* (5) Back in file */
			file_put_contents(__ROOT__."/tmp/".$this->diplome_id.".ics", implode("\n", $line));

			header('Location: /');
		}

		/* POST-CALL
		*
		*/
		public function __destruct(){

		}



	}