From e95f6cfb982b8afa8da565966ba5202bd856398d Mon Sep 17 00:00:00 2001
From: Pierre <pierre@hubert.fr>
Date: Sun, 31 Dec 2017 13:49:10 +0100
Subject: [PATCH] A user can delete his membership from a conversation

---
 RestControllers/conversationsController.php | 12 +++----
 classes/components/conversations.php        | 35 +++++++++++++++++++++
 2 files changed, 40 insertions(+), 7 deletions(-)

diff --git a/RestControllers/conversationsController.php b/RestControllers/conversationsController.php
index 08edfc9..85f9c52 100644
--- a/RestControllers/conversationsController.php
+++ b/RestControllers/conversationsController.php
@@ -34,12 +34,8 @@ class conversationsController{
 	public function getOneInformations(){
 		user_login_required();
 
-		//First, check the parametres
-		if(!isset($_POST['conversationID']))
-			Rest_fatal_error(501, "No conversation ID specified with the request");
-		
-		//Extract data
-		$conversationID = toInt($_POST['conversationID']);
+		//Get conversation ID
+		$conversationID = getPostConversationID("conversationID");
 		
 		//Try to get informations about the conversation
 		$conversationsList = CS::get()->components->conversations->getList(userID, $conversationID);
@@ -412,7 +408,9 @@ class conversationsController{
 				Rest_fatal_error(500, "Couldn't delete the conversation from the server !");
 		}
 		else {
-			Rest_fatal_error(500, "Not implemented yet !!");
+			//Delete the membership to the conversation
+			if(!CS::get()->components->conversations->delete_member($conversationID, userID))
+				Rest_fatal_error(500, "Couldn't delete conversation membership !");
 		}
 
 
diff --git a/classes/components/conversations.php b/classes/components/conversations.php
index 19756f5..a9c54bd 100644
--- a/classes/components/conversations.php
+++ b/classes/components/conversations.php
@@ -635,6 +635,8 @@ class conversations {
 	/**
 	 * Delete a conversation
 	 * 
+	 * Delete all the messages, membership and informations about a conversation
+	 * 
 	 * @param int $conID The conversation to delete
 	 * @return bool True in case of success / False else
 	 */
@@ -661,6 +663,39 @@ class conversations {
 		return true;
 	}
 
+	/**
+	 * Delete a conversation membership
+	 * 
+	 * This function is just removing a user from a conversation by 
+	 * deleting all the messages the user has posted and removing its 
+	 * membership
+	 * 
+	 * @param int $convID The target conversation
+	 * @param int $memberID The ID of the member to delete from the conversation
+	 * @return bool True in case of success / false else
+	 */
+	public function delete_member(int $convID, int $memberID) : bool {
+
+		//Get all the messages of member the conversation
+		$messages = $this->getMessages(
+			"WHERE ID_".$this->conversationsListTable." = ? AND ID_utilisateurs = ?", 
+			array($convID, $memberID));
+
+		//Delete each message
+		foreach($messages as $message){
+			if(!$this->delete_message($message['ID'], $convID))
+				return false;
+		}
+
+		//Delete user membership
+		if(!$this->removeMember($convID, $memberID))
+			return false;
+
+		//Success
+		return true;
+	}
+
+
 	/**
 	 * Delete a single message of a conversation
 	 *