Webservices

services/www/api/gallery_item/read.php

@@ -0,0 +1,82 @@
+<?php
+
+const ITEMS_PER_PAGE = 50;
+
+// required headers
+header("Access-Control-Allow-Origin: *");
+header("Content-Type: application/json; charset=UTF-8");
+
+// include database and object files
+include_once '../../config/database.php';
+include_once '../objects/gallery_item.php';
+include_once '../objects/user.php';
+include_once '../objects/like.php';
+include_once '../authenticator.php';
+
+if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
+    // CORS Pre-flight request
+    header("Access-Control-Allow-Headers: origin, content-type, accept, authentication");
+    http_response_code(200);
+    exit();
+} else if ($_SERVER['REQUEST_METHOD'] != 'GET') {
+    http_response_code(400);
+    echo json_encode(array("error" => "Method not accepted."));
+    exit();
+}
+
+// get params
+$page = 0;
+if (isset($_GET["page"])) {
+    if (!is_int($_GET["page"])) {
+        http_response_code(400);
+    }
+    $page = $_GET["page"];
+}
+$id = null;
+if (isset($_GET['id'])) {
+    if (!is_int($_GET["id"])) {
+        http_response_code(400);
+    }
+    $id = $_GET["id"];
+}
+
+// instantiate database and product object
+$database = new Database();
+$db = $database->getConnection();
+
+$auth = new Authenticator($db);
+$uid = $auth->authenticate();
+
+// query products
+if ($id)
+    $stmt = GalleryItem::readById($db, $uid, $id);
+else
+    $stmt = GalleryItem::read($db, $uid, $page, ITEMS_PER_PAGE);
+
+// products array
+$gi_arr=array();
+$gi_arr["records"]=array();
+$gi_arr["page"]=$page;
+$gi_arr["more"]=FALSE;
+
+// retrieve our table contents
+// fetch() is faster than fetchAll()
+// http://stackoverflow.com/questions/2770630/pdofetchall-vs-pdofetch-in-a-loop
+$count = 0;
+while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
+    $count++;
+
+    $gallery_item = GalleryItem::fromRow($row);
+
+    if ($count <= ITEMS_PER_PAGE) {
+        array_push($gi_arr["records"], $gallery_item);
+    } else {
+        $gi_arr["more"] = TRUE;     // If the query returns one more element than ITEMS_PER_PAGE, there is at least another page
+    }
+}
+
+// set response code - 200 OK
+http_response_code(200);
+
+// show products data in json format
+echo json_encode($gi_arr);