Merge branch 'lars-chat' into 'master'

Lars chat

See merge request !59

website/queries/friendship.php

@@ -3,6 +3,7 @@
 function selectAllFriends($db, $userID) {
     return $db->query("
     SELECT
+        `user`.`userID`,
         `user`.`username`,
         `user`.`profilepicture`,
         `user`.`onlinestatus`,

website/queries/private_message.php

@@ -0,0 +1,85 @@
+<?php
+
+include_once("connect.php");
+
+session_start();
+
+function getOldChatMessages($user2ID) {
+    $db = $GLOBALS["db"];
+    $user1ID = $_SESSION["userID"];
+
+    $stmt = $db->prepare("
+    SELECT
+        *
+    FROM
+        `private_message`
+    WHERE
+        `origin` = :user1 AND 
+        `destination` = :user2 OR 
+        `origin` = :user2 AND
+        `destination` = :user1
+    ORDER BY
+        `messageID` ASC
+    ");
+
+    $stmt->bindParam(":user1", $user1ID);
+    $stmt->bindParam(":user2", $user2ID);
+
+    $stmt->execute();
+
+    return json_encode($stmt->fetchAll());
+}
+
+function sendMessage($destination, $content) {
+    $db = $GLOBALS["db"];
+    $stmt = $db->prepare("
+    INSERT INTO
+        `private_message`
+    (
+        `origin`,
+        `destination`,
+        `content`
+    )
+    VALUES
+    (
+        :origin,
+        :destination,
+        :content
+    )
+    ");
+
+    return $stmt->execute(array(
+        "origin" => $_SESSION["userID"],
+        "destination" => $destination,
+        "content" => $content
+    ));
+}
+
+function getNewChatMessages($lastID, $destination) {
+    $db = $GLOBALS["db"];
+    $origin = $_SESSION["userID"];
+
+    $stmt = $db->prepare("
+    SELECT
+        *
+    FROM
+        `private_message`
+    WHERE
+        (
+        `origin` = :user1 AND 
+        `destination` = :user2 OR 
+        `origin` = :user2 AND
+        `destination` = :user1) AND
+        `messageID` > :lastID
+    ORDER BY
+        `messageID` ASC
+    ");
+
+    $stmt->bindParam(':user1', $origin);
+    $stmt->bindParam(':user2', $destination);
+    $stmt->bindParam(':lastID', $lastID);
+
+    $stmt->execute();
+
+    return json_encode($stmt->fetchAll());
+}