<?php
// Comment if you don't want to allow posts from other domains
header('Access-Control-Allow-Origin: *');

// Allow the following methods to access this file
header('Access-Control-Allow-Methods: OPTIONS, GET, DELETE, POST, HEAD, PATCH');

// Allow the following headers in preflight
header('Access-Control-Allow-Headers: content-type, upload-length, upload-offset, upload-name');

// Allow the following headers in response
header('Access-Control-Expose-Headers: upload-offset');

// Load our configuration for this server
require_once ('config.php');
require ("./util/upload_media.php");
require ("./util/read_write_functions.php");


if ($_SERVER['REQUEST_METHOD'] === 'POST')
{

    $files = $_FILES["filepond"];
    $imageName = null;
    $id = null;

    function saveImagesToTempLocation($uploadedFile)
    {

        global $imageName;
        global $id;

        $imageUniqueId = null;

        // check that there were no errors while uploading file
        if (isset($uploadedFile) && $uploadedFile['error'] === UPLOAD_ERR_OK)
        {

            $imageName = uploadImage($uploadedFile, UPLOAD_DIR);

            if ($imageName)
            {

                $filePointer = UPLOAD_DIR . $imageName;
                $arrayDBStore = readJsonFile();
                $id = uniqid();

                $newImageInfo = ["id" => $id, "name" => $imageName, "date" => time() ];

                array_push($arrayDBStore, $newImageInfo);

                writeJsonFile($arrayDBStore);

            }

        }

        return $id;

    }

    $structuredFiles = [];
    if (isset($files))
    {
        foreach ($files["name"] as $filename)
        {
            $structuredFiles[] = ["name" => $filename];
        }

        foreach ($files["type"] as $index => $filetype)
        {
            $structuredFiles[$index]["type"] = $filetype;
        }

        foreach ($files["tmp_name"] as $index => $file_tmp_name)
        {
            $structuredFiles[$index]["tmp_name"] = $file_tmp_name;
        }

        foreach ($files["error"] as $index => $file_error)
        {
            $structuredFiles[$index]["error"] = $file_error;
        }

        foreach ($files["size"] as $index => $file_size)
        {
            $structuredFiles[$index]["size"] = $file_size;
        }
    }

    $uniqueImgID = null;
    if (count($structuredFiles))
    {
        foreach ($structuredFiles as $structuredFile)
        {
            $uniqueImgID = saveImagesToTempLocation($structuredFile);
        }
    }

    $response = [];
    if ($uniqueImgID)
    {

        $response["status"] = "success";
        $response["key"] = $uniqueImgID;
        $response["msg"] = null;
        $response["files"] = json_encode($structuredFiles);

        http_response_code(200);

    }
    else
    {

        $response["status"] = "error";
        $response["key"] = null;
        $response["msg"] = "An error occured while uploading image";
        $response["files"] = json_encode($structuredFiles);

        http_response_code(400);

    }

    header('Content-Type: application/json');
    echo json_encode($response);

    exit();

}
else
{

    exit();

}

?>