<?php

  $shopUrl = "https://api.spreadshirt.net/api/v1/shops/100070016/";
  $user_agent = "TshirtFamilyBasket/1.0 (http://www.tshirtfamily.fr; mail@test.fr)";

    @ini_set ('user_agent', $user_agent);

  $header = array();
  $header[] = createSprdAuthHeader("GET", $shopUrl);
  $header[] = "Content-Type: application/xml";

  $ch = curl_init($shopUrl);
  curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
  curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HEADER, false);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  $result = curl_exec($ch);

  // Close the handle
  curl_close($ch);

  $shop = new SimpleXMLElement($result);
  $namespaces = $shop->getNamespaces(true);



  // 5. Crée un panier
  $basket = new SimpleXMLElement(getFileData("basket.xml")); // crée un panier 'temps'

  $basketsUrl = 'https://api.spreadshirt.net/api/v1/baskets';

  $header = array();
  $header[] = createSprdAuthHeader("POST", $basketsUrl);
  $header[] = "Content-Type: application/xml";

  $ch = curl_init($basketsUrl);
  curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $basket->asXML());
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HEADER, true);
  $result = curl_exec($ch);
  // Close the handle
  curl_close($ch);

  $basketUrl = parseHttpHeaders($result, "Location");

  // 6. Crée un item dans le panier

  // je remplacerais ce num par le panier ensuite
  $idBasketInterne = str_replace (' ', '', microtime());
  $idBasketInterne = str_replace ('.', '', $idBasketInterne);

  $saveDataBasket = [];

  foreach ($_SESSION['articles'] as $key => $value) {


  // enregistre les articles en bdd
    $saveDataBasket[] = [
          'produitId'    => $value['product']['id'],
          'produitUrl'   => $value['product']['href'],
          'appearance'    => $value['appearance']['name'],
          'view'          => $value['view']['name'],
          'productType'   => $value['productType']['name'],
          'size'          => $value['size']['name'],
          'quantity'      => $value['quantity'],
          'basketsUrl'   => $idBasketInterne
      ];


    $articleUrl = $value['product']['href'];
    $quantity = $value['quantity'];
    $appearanceId = $value['appearance']['id'];
    $sizeId = $value['size']['id'];

    $basketItem = new SimpleXMLElement(getFileData("basketitem.xml")); // crée un article 'temps'



    $itemAttributes = $basketItem->element->attributes($namespaces['xlink']);
    $itemAttributes->href = $articleUrl;
    $basketItem->quantity = $quantity;
    $basketItem->element->properties->property[0] = $appearanceId;
    $basketItem->element->properties->property[1] = $sizeId;

    $basketItemsUrl = $basketUrl."/items";

    $header = array();
    $header[] = createSprdAuthHeader("POST", $basketItemsUrl);
    $header[] = "Content-Type: application/xml";

    $ch = curl_init($basketItemsUrl);
    curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $basketItem->asXML()); // envoi l'article
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, true);
    $result = curl_exec($ch);

    print_r($result);



    // Close the handle
    curl_close($ch);

  }





  // 7. Obtenir une URL de caisse
  $basketCheckoutUrl = $basketUrl."/checkout";

  $header = array();
  $header[] = createSprdAuthHeader("GET", $basketCheckoutUrl);
  $header[] = "Content-Type: application/xml";

  $ch = curl_init($basketCheckoutUrl);
curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
  curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HEADER, false);
  $result = curl_exec($ch);
  // Close the handle
  curl_close($ch);

  $checkoutRef = new SimpleXMLElement($result);
  $refAttributes = $checkoutRef->attributes($namespaces['xlink']);
  $checkoutUrl = $refAttributes->href;

  $checkoutUrl = str_replace('en', 'fr', $checkoutUrl);
  $checkoutUrl = str_replace('net', 'fr', $checkoutUrl);
  $checkoutUrl = $checkoutUrl.'&shopId=100070016';


  var_dump($checkoutUrl);


  //je supprime le panier avant la redirection
  unset( $_SESSION['articles']);
  // j'enregistre le panier dans la BDD
  foreach ($saveDataBasket as $saveData) {
    $saveData['basketsUrl'] = $checkoutUrl;
    addInDb($saveData, DB_BASKET);
  }

  //redirection vers le payement
  header("location:".$checkoutUrl);
  die();



////////////////////////////////////////////
/////////// function
////////////////////////////////////////////

function createSprdAuthHeader($method, $url) {
    $apiKey = "my-api-key";
    $secret = "my-secret-key";
    $time = time()*1000;

    $data = "$method $url $time";
    $sig = sha1("$data $secret");

    return "Authorization: SprdAuth apiKey=\"$apiKey\", data=\"$data\", sig=\"$sig\"";
}

function parseHttpHeaders( $header, $headername ) {
    $retVal = array();
    $fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));
    foreach( $fields as $field ) {
        if( preg_match('/('.$headername.'): (.+)/m', $field, $match) ) {
            return $match[2];
        }
    }
    return $retVal;
}

function getFileData($file) {
    $fp = fopen($file, "r");
    $data = "";
    while(!feof($fp)) {
        $data .= fgets($fp, 1024);
    }
    fclose($fp);
    return $data;
}