<?php
session_start ();
include_once 'clazz/Zincluder.php';
/*
TODO add $_GET['p'] => should return on $_SESSION ['current_error'] (0) or via echo (1)
*/

function exiting($message,$location='index.php'){
	if($message instanceof SQLProcessingException){
		echo $message->getMessage();
		$_SESSION ['current_error'] = $message->getHtmlMessage();
	}else if($message instanceof Exception){
		echo $message->getMessage();
		$_SESSION ['current_error'] = htmlSpecialChars($message->getMessage());
	}else{
		$_SESSION ['current_error'] = $message;
	}
	header ( 'Location:' . $location );
	exit;
}


if (! isset ( $_GET ['action'] )) 
	exiting(NULL,'40A.php');


switch ($_GET ['action']) {
	case 'disconnect' :
	
		unset($_SESSION['session_id']);
		unset($_SESSION['session_mdp']);

		header('Location:index.php');//TODO lastpageredirection
		$_SESSION['current_error'] = 'La d&eacute;connexion se sera correctement pass&eacutee!';
		
		exit;
	
	case 'register' :
		//Action : register
		$pseudo = $_POST ['pseudo'] ?? NULL;
		$mdp = $_POST ['mdp'] ?? NULL;
		$mdp2 = $_POST ['mdp2'] ?? NULL;
		
		try{
			assert($pseudo,new MissingDataException('pseudo','POST'));
			assert($mdp,new MissingDataException('mdp','POST'));
			assert($mdp2,new MissingDataException('mdp2','POST'));
			assert($mdp===$mdp2,new DataException('mdp and mdp2 should be equal'));
		
			Membre::registerPerson ($pseudo,$mdp);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(Utility::SUCESSFULLY_REGISTERED,'login.php');
	
	case 'login' :
		//Action : login
		$pseudo = $_POST ['pseudo'] ?? NULL;
		$mdp = $_POST ['mdp'] ?? NULL;
		
		try{
			assert($pseudo,new MissingDataException('pseudo','POST'));
			assert($mdp,new MissingDataException('mdp','POST'));
			$_SESSION['session_id'] = Membre::checkLogin ($pseudo,$mdp);
			$_SESSION['session_mdp'] = $mdp;
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(Utility::SUCESSFULLY_LOGGED_IN,'index.php');//TODO Do a "previousContentPageRedirection"

	case 'changePassword' :
		//Action : change password
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$rmdp = $_POST ['rmdp'] ?? NULL;
		$mdp = $_POST ['nmdp'] ?? NULL;
		$mdp2 = $_POST ['nmdp2'] ?? NULL;
		
		var_dump($_POST);
		
		try{
			assert($rmdp,new MissingDataException('rmdp','POST'));
			assert($mdp,new MissingDataException('mdp','POST'));
			assert($mdp2,new MissingDataException('mdp2','POST'));
			assert($mdp===$mdp2,new DataException('mdp and mdp2 should be equal'));
		
			Membre::changePassword ($sid,$rmdp,$mdp);
		}catch(Exception $e){
			exiting($e);
		}
		exiting(Utility::SUCESSFULLY_CHANGED_PASSWORD,'login.php');

	case 'createDiscussion' :
		//Action : create discussion
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$name = $_POST ['name'] ?? NULL;
		
		try{
			assert($sid,new LoginNeededException());
			assert($rmdp,new MissingDataException('rmdp','POST'));
			assert($mdp,new MissingDataException('mdp','POST'));
			assert($mdp2,new MissingDataException('mdp2','POST'));
		
			$did = Discussion::createDiscussion ($sid,$mdp,$name);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(Utility::SUCESSFULLY_CREATED_DISCUSSION,'discut.php?d='.$did);

	case 'postMessage' :
		//Action : post message
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$did = $_GET ['d'] ?? NULL;
		$text = $_POST ['msg'] ?? NULL;
		
		var_dump($text);
		
		try{
			assert($sid,new LoginNeddedException());
			assert($did,new MissingDataException('d','GET'));
			assert($text,new MissingDataException('text','POST'));
		
			Message::postMessage ($sid,$mdp,$did,$text);
			
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'discut.php?d='.$did);

	case 'deleteMessage' :
		//Action : delete message
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$mid = $_GET ['m'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($mid,new MissingDataException('m','GET'));
		
			$did = Message::deleteMessage ($sid,$mdp,$mid);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'discut.php?d='.$did);
	case 'editVersion' :
		//Action : edit version
		// Data : name langage tags insertIndex -> facultatifs
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$v = $_GET['v'] ?? NULL;
		
		$name = $_POST['name'] ?? NULL;
		$langage = $_POST['langage'] ?? NULL;
		$tags = $_POST['tags'] ?? NULL;
		$insertIndex = $_POST['insertIndex'] ?? NULL;
		
		try{
			assert($sid,new LoginNeededException());
			assert($v,new MissingDataException('v','GET'));
			
			Version::editVersion ($sid,$mdp,$v,$name,$langage,$tags,$insertIndex);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(Utility::SUCESSFULLY_CHANGED_PASSWORD,'login.php');
		
		
	case 'getDiscutsMessages' :
		//Action : get discut's messages
		//TODO precise output type (via $_GET)
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$did = $_GET ['did'] ?? NULL;
		
		try{
			assert($sid,new LoginNeededException());
			assert($did,new MissingDataException('did','GET'));
			
			$jmsgs = Discussion::getMessages ($sid,$mdp,$did);
			echo json_encode ( $jmsgs );
			flush ();
			exit;
		}catch(Exception $e){
			exiting($e);
		}
		exit;
		
	case 'getPeopleList' :
		//Action : get project's secondary owners
		//TODO precise output type (via $_GET)
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['p'] ?? NULL;
		
		try{
			assert($sid,new LoginNeededException());
			assert($pid,new MissingDataException('pid','GET'));
		
			$secondaryOwners = Projet::getSecondaryOwners ($sid,$mdp,$pid);
			$jsowns = array();
			foreach($secondaryOwners as $sOwner){
				$jsown = array();
				$jsown['ID'] = $sOwner['ID'];
				$jsown['pseudo'] = $sOwner['pseudo'];
				array_push($jsowns,$jsown);
			}
		
			echo json_encode ( $jsowns );
			flush ();
			exit;
		}catch(Exception $e){
			exiting($e);
		}
		exit;
		
		
	case 'removePeople' :
		//Action : remove secodary owner
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['pid'] ?? NULL;
		$peopleIDs = $_POST['peopleIDs'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('pid','GET'));
		
			$did = Projet::removeSecondaryOwner ($sid,$mdp,$pid,explode(',',$peopleIDs));
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'projet.php?p='.$pid);
		
		exit;

	case 'addPeople' :
		//Action : 	add secondary owner
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['pid'] ?? NULL;
		$personName = $_POST['personName'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('pid','GET'));
			assert($pid,new MissingDataException('personName','POST'));
		
			$did = Projet::addSecondaryOwner ($sid,$mdp,$pid,explode(',',$personName));
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'projet.php?p='.$pid);

	case 'nameOwner' :
		//Action : 	name a new Owner
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['pid'] ?? NULL;
		$personId = $_POST['personId'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('pid','GET'));
			assert($personId,new MissingDataException('personId','POST'));
		
			Projet::nameOwner ($sid,$mdp,$pid,explode(',',$personId));
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'projet.php?p='.$pid);
		

	case 'delProject' :
		//Action : delete this project
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['pid'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('pid','GET'));
		
			Projet::removeProject ($sid,$mdp,$pid);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'projets.php');
		

	case 'getVersionList' :
		//Action : get project's versions
		//TODO precise output type (via $_GET)
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['p'] ?? NULL;
		
		try{
			assert($sid,new LoginNeededException());
			assert($pid,new MissingDataException('pid','GET'));
		
			$versions = Version::getFromProject ($sid,$mdp,$pid);
			$jvs = array();
			foreach($versions as $version){
				$jv = array();
				$jv['ID'] = $version['ID'];
				$jv['name'] = $version['pseudo'];
				$jv['versionAbs'] = $version['versionAbs'];
				array_push($jvs,$jv);
			}
		
			echo json_encode ( $jvs );
			flush ();
			exit;
		}catch(Exception $e){
			exiting($e);
		}
		exit;
		
		
	case 'createVersion' :
		//Action : 	add new version
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$pid = $_GET ['pid'] ?? NULL;
		$name = $_POST ['name'] ?? NULL;
		$tags = $_POST ['tags'] ?? NULL;
		$language = $_POST ['language'] ?? NULL;
		$insertIndex = $_POST ['insertIndex'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('pid','GET'));
			assert($text,new MissingDataException('name','POST'));
			assert($text,new MissingDataException('tags','POST'));
			assert($text,new MissingDataException('language','POST'));
		
			$vid = Version::createVerion ($sid,$mdp,$pid,$name,$tags,$language,$insertIndex);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'version.php?v='.$vid);								
										
	case 'editVersion' :
		//Action : 	add secodary owner
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$vid = $_GET ['vid'] ?? NULL;
		$name = $_POST ['name'] ?? NULL;
		$tags = $_POST ['tags'] ?? NULL;
		$language = $_POST ['language'] ?? NULL;
		$insertIndex = $_POST ['insertIndex'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('vid','GET'));
			assert($text,new MissingDataException('name','POST'));
			assert($text,new MissingDataException('tags','POST'));
			assert($text,new MissingDataException('language','POST'));
		
			$vid = Version::editVerion ($sid,$mdp,$vid,$name,$tags,$language,$insertIndex);
		}catch(Exception $e){
			exiting($e);
		}
		
		//TODO make auto version_abs sorting according to $_POST ['insertIndex']
		//TODO verify tags and langage
		
		exiting(NULL,'version.php?v='.$vid);
		
					
	case 'delVersion' :
		//Action : delete this version
		
		$sid = $_SESSION ['session_id'] ?? NULL;
		$mdp = $_SESSION ['session_mdp'] ?? NULL;
		$vid = $_GET ['vid'] ?? NULL;
		
		try{
			assert($sid,new LoginNeddedException());
			assert($pid,new MissingDataException('vid','GET'));
		
			$pid = Version::removeVersion ($sid,$mdp,$vid);
		}catch(Exception $e){
			exiting($e);
		}
		
		exiting(NULL,'projet.php?p=' . $pid);
							
}