Get membership level of a user

RestControllers/GroupsController.php

@@ -7,6 +7,17 @@
 
 class GroupsController {
 	
+	/**
+	 * API groups membership levels
+	 */
+	const GROUPS_MEMBERSHIP_LEVELS = array(
+		0 => "administrator",
+		1 => "moderator",
+		2 => "member",
+		3 => "pending",
+		4 => "visitor"
+	);
+
 	/**
 	 * Create a group
 	 * 
@@ -95,6 +106,7 @@ class GroupsController {
 		$data["name"] = $info->get_name();
 		$data["icon_url"] = $info->get_icon_url();
 		$data["number_members"] = $info->get_number_members();
+		$data["membership"] = self::GROUPS_MEMBERSHIP_LEVELS[$info->get_membership_level()];
 
 		return $data;
 	}

classes/components/GroupsComponent.php

@@ -106,6 +106,48 @@ class GroupsComponent {
         ));
     }
 
+    /**
+     * Check whether a user has already a saved membership in a group or not
+     * 
+     * @param int $userID The ID of the target user
+     * @param int $groupID The ID of the target group
+     * @return bool TRUE if the database includes a membership for the user / FALSE else
+     */
+    private function hasMembership(int $userID, int $groupID) : bool {
+        return db()->count(
+            self::GROUPS_MEMBERS_TABLE,
+            "WHERE groups_id = ? AND user_id = ?", 
+            array($groupID, $userID)) > 0;
+    }
+
+    /**
+     * Get the membership level of a user to a group
+     * 
+     * @param int $userID The ID of the queried user
+     * @param int $groupID The ID of the target group
+     * @return int The membership level of the user
+     */
+    public function getMembershipLevel(int $userID, int $groupID) : int {
+
+        //Check for membership
+        if(!$this->hasMembership($userID, $groupID))
+            return GroupMember::VISITOR;
+        
+        //Fetch the database to get membership
+        $results = db()->select(
+            self::GROUPS_MEMBERS_TABLE,
+            "WHERE groups_id = ? AND user_id = ?",
+            array($groupID, $userID),
+            array("level")
+        );
+
+        //Check for results
+        if(count($results) < 0)
+            return GroupMember::VISITOR; //Security first
+        
+        return $results[0]["level"];
+    }
+
     /**
      * Count the number of members of a group
      * 
@@ -133,6 +175,7 @@ class GroupsComponent {
         $info->set_id($data["id"]);
         $info->set_name($data["name"]);
         $info->set_number_members($this->countMembers($info->get_id()));
+        $info->set_membership_level($this->getMembershipLevel(userID, $info->get_id()));
 
         return $info;
 

classes/models/GroupInfo.php

@@ -14,6 +14,7 @@ class GroupInfo extends BaseUniqueObject {
     private $name;
     private $number_members = -1;
 	private $icon;
+	private $membership_level = -1;
     
     
     //Get and set the name of group
@@ -57,5 +58,18 @@ class GroupInfo extends BaseUniqueObject {
 	
 	public function get_icon_url() : string {
 		return path_user_data($this->get_icon());
-    }
+	}
+	
+	//Get and set the membership level of the current user
+	public function set_membership_level(int $membership_level){
+		$this->membership_level = $membership_level;
+	}
+
+	public function has_membership_level() : bool {
+		return $this->membership_level > -1;
+	}
+
+	public function get_membership_level() : int {
+		return $this->membership_level;
+	}
 }