Added queries and functions for adding group members.

website/queries/group_member.php

@@ -54,3 +54,48 @@ function searchSomeOwnGroups($n, $m, $search) {
 
     return json_encode($stmt->fetchAll());
 }
+
+function addMember($groupID, $userID, $role) {
+    $stmt = prepareQuery("
+    INSERT INTO
+      `group_member` (`userID`, `groupID`, `role`)
+    VALUES
+      (:userID, :groupID, :role)
+    ");
+
+    $stmt->bindParam(':userID', $userID);
+    $stmt->bindParam(':groupID', $groupID);
+    $stmt->bindParam(':role', $role);
+    return $stmt->execute();
+}
+
+function changeMember($groupID, $userID, $role) {
+    $stmt = prepareQuery("
+    UPDATE
+      `group_member`
+    SET
+      `role` = :role
+    WHERE
+      `userID` = :userID AND
+      `groupID` = :groupID
+    ");
+
+    $stmt->bindParam(':userID', $userID);
+    $stmt->bindParam(':groupID', $groupID);
+    $stmt->bindParam(':role', $role);
+    return $stmt->execute();
+}
+
+function deleteMember($groupID, $userID) {
+    $stmt = prepareQuery("
+    DELETE FROM
+      `group_member`
+    WHERE
+      `userID` = :userID AND
+      `groupID` = :groupID
+    ");
+
+    $stmt->bindParam(':userID', $userID);
+    $stmt->bindParam(':groupID', $groupID);
+    return $stmt->execute();
+}

website/queries/group_page.php

@@ -58,6 +58,23 @@ function selectGroupRole(int $groupID) {
     return $stmt->fetch()["role"];
 }
 
+function selectGroupStatus(int $groupID) {
+    $stmt = prepareQuery("
+        SELECT
+          `status`
+        FROM
+          `group_page`
+        WHERE
+          `groupID` = :groupID
+    ");
+
+    $stmt->bindParam(':groupID', $groupID, PDO::PARAM_INT);
+    if(!$stmt->execute()) {
+        return False;
+    }
+    return $stmt->fetch()["status"];
+}
+
 function selectGroupMembers(int $groupID) {
     $stmt = prepareQuery("
         SELECT