<?php //Amazon商品リンク
/**
 * Cocoon WordPress Theme
 * @author: yhira
 * @link: https://wp-cocoon.com/
 * @license: http://www.gnu.org/licenses/gpl-2.0.html GPL v2 or later
 */
if ( !defined( 'ABSPATH' ) ) exit;


if ( !class_exists( 'CocoonAwsV4' ) ):
class CocoonAwsV4 {

  private $accessKey = null;
  private $secretKey = null;
  private $path = null;
  private $regionName = null;
  private $serviceName = null;
  private $httpMethodName = null;
  private $queryParametes = array ();
  private $awsHeaders = array ();
  private $payload = "";

  private $HMACAlgorithm = "AWS4-HMAC-SHA256";
  private $aws4Request = "aws4_request";
  private $strSignedHeader = null;
  private $xAmzDate = null;
  private $currentDate = null;

  public function __construct($accessKey, $secretKey) {
      $this->accessKey = $accessKey;
      $this->secretKey = $secretKey;
      $this->xAmzDate = $this->getTimeStamp ();
      $this->currentDate = $this->getDate ();
  }

  function setPath($path) {
      $this->path = $path;
  }

  function setServiceName($serviceName) {
      $this->serviceName = $serviceName;
  }

  function setRegionName($regionName) {
      $this->regionName = $regionName;
  }

  function setPayload($payload) {
      $this->payload = $payload;
  }

  function setRequestMethod($method) {
      $this->httpMethodName = $method;
  }

  function addHeader($headerName, $headerValue) {
      $this->awsHeaders [$headerName] = $headerValue;
  }

  private function prepareCanonicalRequest() {
      $canonicalURL = "";
      $canonicalURL .= $this->httpMethodName . "\n";
      $canonicalURL .= $this->path . "\n" . "\n";
      $signedHeaders = '';
      foreach ( $this->awsHeaders as $key => $value ) {
          $signedHeaders .= $key . ";";
          $canonicalURL .= $key . ":" . $value . "\n";
      }
      $canonicalURL .= "\n";
      $this->strSignedHeader = substr ( $signedHeaders, 0, - 1 );
      $canonicalURL .= $this->strSignedHeader . "\n";
      $canonicalURL .= $this->generateHex ( $this->payload );
      return $canonicalURL;
  }

  private function prepareStringToSign($canonicalURL) {
      $stringToSign = '';
      $stringToSign .= $this->HMACAlgorithm . "\n";
      $stringToSign .= $this->xAmzDate . "\n";
      $stringToSign .= $this->currentDate . "/" . $this->regionName . "/" . $this->serviceName . "/" . $this->aws4Request . "\n";
      $stringToSign .= $this->generateHex ( $canonicalURL );
      return $stringToSign;
  }

  private function calculateSignature($stringToSign) {
      $signatureKey = $this->getSignatureKey ( $this->secretKey, $this->currentDate, $this->regionName, $this->serviceName );
      $signature = hash_hmac ( "sha256", $stringToSign, $signatureKey, true );
      $strHexSignature = strtolower ( bin2hex ( $signature ) );
      return $strHexSignature;
  }

  public function getHeaders() {
      $this->awsHeaders ['x-amz-date'] = $this->xAmzDate;
      ksort ( $this->awsHeaders );

      // Step 1: CREATE A CANONICAL REQUEST
      $canonicalURL = $this->prepareCanonicalRequest ();

      // Step 2: CREATE THE STRING TO SIGN
      $stringToSign = $this->prepareStringToSign ( $canonicalURL );

      // Step 3: CALCULATE THE SIGNATURE
      $signature = $this->calculateSignature ( $stringToSign );

      // Step 4: CALCULATE AUTHORIZATION HEADER
      if ($signature) {
          $this->awsHeaders ['Authorization'] = $this->buildAuthorizationString ( $signature );
          return $this->awsHeaders;
      }
  }

  private function buildAuthorizationString($strSignature) {
      return $this->HMACAlgorithm . " " . "Credential=" . $this->accessKey . "/" . $this->getDate () . "/" . $this->regionName . "/" . $this->serviceName . "/" . $this->aws4Request . "," . "SignedHeaders=" . $this->strSignedHeader . "," . "Signature=" . $strSignature;
  }

  private function generateHex($data) {
      return strtolower ( bin2hex ( hash ( "sha256", $data, true ) ) );
  }

  private function getSignatureKey($key, $date, $regionName, $serviceName) {
      $kSecret = "AWS4" . $key;
      $kDate = hash_hmac ( "sha256", $date, $kSecret, true );
      $kRegion = hash_hmac ( "sha256", $regionName, $kDate, true );
      $kService = hash_hmac ( "sha256", $serviceName, $kRegion, true );
      $kSigning = hash_hmac ( "sha256", $this->aws4Request, $kService, true );

      return $kSigning;
  }

  private function getTimeStamp() {
      return gmdate ( "Ymd\THis\Z" );
  }

  private function getDate() {
      return gmdate ( "Ymd" );
  }
}
endif;


//JSONがエラーを出力しているか
if ( !function_exists( 'is_paapi_json_error' ) ):
function is_paapi_json_error($json){
  return property_exists($json, 'Errors');
}
endif;

//PA-APIの返り値のJSONにアイテムが存在するか
if ( !function_exists( 'is_paapi_json_item_exist' ) ):
function is_paapi_json_item_exist($json){
  if (isset($json->{'ItemsResult'})) {
    $ItemsResult = $json->{'ItemsResult'};
    return property_exists($ItemsResult, 'Items');
  }
}
endif;


//Amazon APIから情報の取得
if ( !function_exists( 'get_amazon_itemlookup_json' ) ):
function get_amazon_itemlookup_json($asin, $tracking_id = null){
  $asin = trim($asin);

  //トラッキングIDが存在する場合
  $tracking_id = trim($tracking_id);
  $tid = null;
  if ($tracking_id) {
    $tid = '+'.$tracking_id;
  }

  //キャッシュの存在
  $transient_id = get_amazon_api_transient_id($asin.$tid);
  $transient_bk_id = get_amazon_api_transient_bk_id($asin.$tid);
  $json_cache = get_transient( $transient_id );
  // $json = json_decode( $json_cache );
  // $json_error_code    = isset($json->{'Errors'}[0]->{'Code'}) ? $json->{'Errors'}[0]->{'Code'} : null;
  //_v($json_cache);
  if ($json_cache /* && ($json_error_code != 'TooManyRequests')*/ && DEBUG_CACHE_ENABLE) {
    //_v($json_cache);
    return $json_cache;
  }

  $serviceName = 'ProductAdvertisingAPI';
  $region = __( 'us-west-2', THEME_NAME );
  $region = apply_filters('amazon_webservices_region', $region);

  //アクセスキー
  $accessKey = trim(get_amazon_api_access_key_id());
  //シークレットキー
  $secretKey = trim(get_amazon_api_secret_key());
  //アソシエイトタグ
  $partnerTag = trim(get_amazon_associate_tracking_id($tracking_id));
  //キャッシュ更新間隔（日）
  $days = 1; //1日（24時間）
  // $days = intval(get_api_cache_retention_period());
  //PA API 4条の(n)によりキャッシュは24時間までとする
  // (n) 乙は、画像で構成される商品関連コンテンツを保存またはキャッシュしてはいけませんが、画像で構成される商品関連コンテンツへのリンクについては最長24時間保存することができます。乙は、画像で構成されていない他の商品関連コンテンツを、データキャッシュの目的で、最長24時間保存することができますが、その場合、乙は、その後直ちに Product Advertising APIにリクエスト送信を行いまたは新しいデータフィードを取り込み、乙のサイト上の商品関連コンテンツを刷新することにより、商品関連コンテンツを直ちに刷新し、再表示しなければなりません。別途甲から通知がない限り、乙は、個別のAmazon Standard Identification Number（以下「ASIN」といいます。）を、本ライセンスの終了まで、期間の制限なく保存することができます。前記にかかわらず、乙のサイトがクライアントアプリケーションを含む場合、これらのクライアントアプリケーションは、商品関連コンテンツを保存またはキャッシュしてはいけません。甲が要請した場合、乙は、甲が乙の本ライセンスの遵守状況を確認するため、3営業日以内に、甲に対して、商品関連コンテンツを含むまたは使用するクライアントアプリケーションのコピーを提供するものとします。

  $payload = '{'
    .' "ItemIds": ['
    .'  "'.$asin.'"'
    .' ],'
    .' "Resources": ['
    .'  "BrowseNodeInfo.BrowseNodes",'
    .'  "BrowseNodeInfo.BrowseNodes.Ancestor",'
    .'  "BrowseNodeInfo.BrowseNodes.SalesRank",'
    .'  "BrowseNodeInfo.WebsiteSalesRank",'
    .'  "CustomerReviews.Count",'
    .'  "CustomerReviews.StarRating",'
    .'  "Images.Primary.Small",'
    .'  "Images.Primary.Medium",'
    .'  "Images.Primary.Large",'
    .'  "Images.Variants.Small",'
    .'  "Images.Variants.Medium",'
    .'  "Images.Variants.Large",'
    .'  "ItemInfo.ByLineInfo",'
    .'  "ItemInfo.ContentInfo",'
    .'  "ItemInfo.ContentRating",'
    .'  "ItemInfo.Classifications",'
    .'  "ItemInfo.ExternalIds",'
    .'  "ItemInfo.Features",'
    .'  "ItemInfo.ManufactureInfo",'
    .'  "ItemInfo.ProductInfo",'
    .'  "ItemInfo.TechnicalInfo",'
    .'  "ItemInfo.Title",'
    .'  "ItemInfo.TradeInInfo",'
    .'  "Offers.Listings.Availability.MaxOrderQuantity",'
    .'  "Offers.Listings.Availability.Message",'
    .'  "Offers.Listings.Availability.MinOrderQuantity",'
    .'  "Offers.Listings.Availability.Type",'
    .'  "Offers.Listings.Condition",'
    .'  "Offers.Listings.Condition.SubCondition",'
    .'  "Offers.Listings.DeliveryInfo.IsAmazonFulfilled",'
    .'  "Offers.Listings.DeliveryInfo.IsFreeShippingEligible",'
    .'  "Offers.Listings.DeliveryInfo.IsPrimeEligible",'
    .'  "Offers.Listings.DeliveryInfo.ShippingCharges",'
    .'  "Offers.Listings.IsBuyBoxWinner",'
    .'  "Offers.Listings.LoyaltyPoints.Points",'
    .'  "Offers.Listings.MerchantInfo",'
    .'  "Offers.Listings.Price",'
    .'  "Offers.Listings.ProgramEligibility.IsPrimeExclusive",'
    .'  "Offers.Listings.ProgramEligibility.IsPrimePantry",'
    .'  "Offers.Listings.Promotions",'
    .'  "Offers.Listings.SavingBasis",'
    .'  "Offers.Summaries.HighestPrice",'
    .'  "Offers.Summaries.LowestPrice",'
    .'  "Offers.Summaries.OfferCount",'
    .'  "ParentASIN",'
    .'  "RentalOffers.Listings.Availability.MaxOrderQuantity",'
    .'  "RentalOffers.Listings.Availability.Message",'
    .'  "RentalOffers.Listings.Availability.MinOrderQuantity",'
    .'  "RentalOffers.Listings.Availability.Type",'
    .'  "RentalOffers.Listings.BasePrice",'
    .'  "RentalOffers.Listings.Condition",'
    .'  "RentalOffers.Listings.Condition.SubCondition",'
    .'  "RentalOffers.Listings.DeliveryInfo.IsAmazonFulfilled",'
    .'  "RentalOffers.Listings.DeliveryInfo.IsFreeShippingEligible",'
    .'  "RentalOffers.Listings.DeliveryInfo.IsPrimeEligible",'
    .'  "RentalOffers.Listings.DeliveryInfo.ShippingCharges",'
    .'  "RentalOffers.Listings.MerchantInfo"'
    .' ],'
    .' "PartnerTag": "'.$partnerTag.'",'
    .' "PartnerType": "Associates",'
    .' "Marketplace": "'.AMAZON_DOMAIN.'"'
    .'}';
  $host = __( 'webservices.amazon.co.jp', THEME_NAME );
  $host = apply_filters('amazon_webservices_host', $host);
  $uriPath = '/paapi5/getitems';
  $awsv4 = new CocoonAwsV4 ($accessKey, $secretKey);
  $awsv4->setRegionName($region);
  $awsv4->setServiceName($serviceName);
  $awsv4->setPath ($uriPath);
  $awsv4->setPayload ($payload);
  $awsv4->setRequestMethod ("POST");
  $awsv4->addHeader ('content-encoding', 'amz-1.0');
  $awsv4->addHeader ('content-type', 'application/json; charset=utf-8');
  $awsv4->addHeader ('host', $host);
  $awsv4->addHeader ('x-amz-target', 'com.amazon.paapi5.v1.ProductAdvertisingAPIv1.GetItems');
  $headers = $awsv4->getHeaders ();
  $headerString = "";
  foreach ( $headers as $key => $value ) {
		$curl_headers[] = $key . ': ' . $value;
    $headerString .= $key . ': ' . $value . "\r\n";
  }

  //cURLがインストールされていれば利用する
  if ( ini_get('allow_url_fopen') == '1' ) {
    $params = array (
      'http' => array (
        'header' => $headerString,
        'method' => 'POST',
        'content' => $payload,
        'ignore_errors' => true,
      )
    );
    $stream = stream_context_create( $params );

    $fp = @fopen ( 'https://'.$host.$uriPath, 'rb', false, $stream );

    if (!$fp) {
      //throw new Exception ( "Exception Occured" );
      return false;
    }
    $res = @stream_get_contents( $fp );
    if ($res === false) {
      //throw new Exception ( "Exception Occured" );
      return false;
    }
  } elseif (function_exists( 'curl_version' )) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, 'https://' . $host.$uriPath );
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'POST' );
    curl_setopt($curl, CURLOPT_POSTFIELDS, $payload );
    curl_setopt($curl, CURLOPT_HTTPHEADER, $curl_headers );
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true );
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true );
    curl_setopt($curl, CURLOPT_HEADER, true );
    curl_setopt($curl, CURLOPT_TIMEOUT, 10 );
    $response	= curl_exec( $curl );
    $info		= curl_getinfo( $curl );
    $error_no	= curl_errno( $curl );

    $status_code = $info[ 'http_code' ];
    $header_size = curl_getinfo( $curl, CURLINFO_HEADER_SIZE );
    $res = substr( $response, $header_size );
  } else {
    return false;
  }

  //503エラーの場合はfalseを返す
  if (includes_string($res, 'Website Temporarily Unavailable')) {
    return false;
  }

  //_v($res);
  if ($res) {
    //JSON取得
    $json = json_decode( $res );
    //_v($json);
    //_v(is_paapi_json_item_exist($json));
    //_v(is_paapi_json_error($json));

    if ($json) {
      //エラーだった場合
      if (is_paapi_json_error($json)) {
        //バックアップキャッシュの確認
        $json_cache = get_transient( $transient_bk_id );
        if ($json_cache && DEBUG_CACHE_ENABLE) {
          return $json_cache;
        }
        return $res;
      }

      //取得できなかった商品のログ出力
      if (!is_paapi_json_item_exist($json)) {
        error_log_to_amazon_product($asin, AMAZON_ASIN_ERROR_MESSAGE);
      }
    }

    if (DEBUG_CACHE_ENABLE) {
      //一応、XML取得時のタイムスタンプを保存しておく
      $count = 1;
      $res = str_replace(',"BrowseNodeInfo":{', ',"date":"'.date_i18n( 'Y/m/d H:i').'","BrowseNodeInfo":{', $res, $count);
      //_v($res);
      //キャッシュ更新間隔（randで次回の同時読み込みを防ぐ）
      $expiration = DAY_IN_SECONDS * $days + (rand(0, 60) * 60);
      //Amazon APIキャッシュの保存
      set_transient($transient_id, $res, $expiration);
      //Amazon APIバックアップキャッシュの保存
      set_transient($transient_bk_id, $res, $expiration * 2);
    }

    return $res;
  }
  return false;
}
endif;


//Amazon商品リンク作成
if (!shortcode_exists('amazon')) {
  add_shortcode('amazon', 'amazon_product_link_shortcode');
}
if ( !function_exists( 'amazon_product_link_shortcode' ) ):
function amazon_product_link_shortcode($atts){
  extract( shortcode_atts( array(
    'asin' => null,
    'id' => null,
    //'search ' => null,
    'kw' => null,
    'title' => null,
    'desc' => null,
    'tracking_id' => null,
    'price' => null,
    'review' => null,
    'size' => 'm',
    'amazon' => 1,
    'rakuten' => 1,
    'yahoo' => 1,
    'mercari' => 1,
    'dmm' => 1,
    'border' => 1,
    'logo' => null,
    'image_only' => 0,
    'text_only' => 0,
    'image_index' => null,
    'samples' => null,
    'catalog' => null,
    'btn1_url' => null,
    'btn1_text' => __( '詳細ページ', THEME_NAME ),
    'btn1_tag' => null,
    'btn2_url' => null,
    'btn2_text' => __( '詳細ページ', THEME_NAME ),
    'btn2_tag' => null,
    'btn3_url' => null,
    'btn3_text' => __( '詳細ページ', THEME_NAME ),
    'btn3_tag' => null,
  ), $atts, 'amazon' ) );

  $asin = sanitize_shortcode_value($asin);

  //ASINが取得できない場合はID
  if (empty($asin)) {
    $asin = sanitize_shortcode_value($id);
  }
  //キーワード
  $keyword = sanitize_shortcode_value($kw);

  //説明文
  $description = $desc;

  //カタログ
  if (!is_null($catalog)) {
    $samples = $catalog;
  }

  //アクセスキー
  $access_key_id = trim(get_amazon_api_access_key_id());
  //シークレットキー
  $secret_access_key = trim(get_amazon_api_secret_key());
  //トラッキングID
  $associate_tracking_id = trim(get_amazon_associate_tracking_id($tracking_id));
  //楽天アフィリエイトID
  $rakuten_affiliate_id = trim(get_rakuten_affiliate_id());
  //Yahoo!バリューコマースSID
  $sid = trim(get_yahoo_valuecommerce_sid());
  //Yahoo!バリューコマースPID
  $pid = trim(get_yahoo_valuecommerce_pid());
  //メルカリアンバサダーID
  $mercari_affiliate_id = trim(get_mercari_affiliate_id());
  //DMMアフィリエイトID
  $dmm_affiliate_id = trim(get_dmm_affiliate_id());

  //もしもID
  $moshimo_amazon_id  = trim(get_moshimo_amazon_id());
  $moshimo_rakuten_id = trim(get_moshimo_rakuten_id());
  $moshimo_yahoo_id   = trim(get_moshimo_yahoo_id());

  //アクセスキーもしくはシークレットキーがない場合
  if (empty($access_key_id) || empty($secret_access_key) || empty($associate_tracking_id)) {
    $error_message = __( 'Amazon APIのアクセスキーもしくはシークレットキーもしくはトラッキングIDが設定されていません。「Cocoon設定」の「API」タブから入力してください。', THEME_NAME );
    return wrap_product_item_box($error_message);
  }

  //ASINがない場合
  if (empty($asin)) {
    $error_message = __( 'Amazon商品リンクショートコード内にASINが入力されていません。', THEME_NAME );
    return wrap_product_item_box($error_message);
  }

  //アソシエイトurlの取得
  $associate_url = get_amazon_associate_url($asin, $associate_tracking_id);

  //商品情報の取得
  $res = get_amazon_itemlookup_json($asin, $associate_tracking_id);

  if ($res === false) {//503エラーの場合
    return get_amazon_admin_error_message_tag($associate_url, __( '503エラー。このエラーは、PA-APIのアクセス制限を超えた場合や、メンテナンス中などにより、リクエストに応答できない場合に出力されるエラーコードです。サーバーの「php.ini設定」の「allow_url_fopen」項目が「ON」になっているかを確認してください。このエラーが頻出する場合は「API」設定項目にある「キャッシュの保存期間」を長めに設定することをおすすめします。', THEME_NAME ));
  }

  //_v($res);
  if ($res) {
    // xml取得
    $json = json_decode( $res );

    if (is_paapi_json_error($json)) {

      $json_error_code    = $json->{'Errors'}[0]->{'Code'};
      $json_error_message = $json->{'Errors'}[0]->{'Message'};

      $admin_message = __( 'アイテムを取得できませんでした。', THEME_NAME ).'<br>';
      $admin_message .= '<pre class="nohighlight"><b>'.$json_error_code.'</b><br>'.preg_replace('/AWS Access Key ID: .+?\. /', '', $json_error_message).'</pre>';
      $admin_message .= '<span class="red">'.__( 'このエラーメッセージは"サイト管理者のみ"に表示されています。', THEME_NAME ).'</span>';

      //キャッシュ名の取得
      $transient_id = get_amazon_api_transient_id($asin);
      $json_cache = get_transient( $transient_id );
      //キャッシュがないときのみログ・メールする
      if (!$json_cache) {
        //メールの送信
        $msg = 'アイテムを取得できませんでした。'.PHP_EOL.
          $json_error_code.PHP_EOL.
          $json_error_message.PHP_EOL;
        error_log_to_amazon_product($asin, $msg);

        //リクエスト過多エラーの場合はキャッシュを保存しない
        if ($json_error_code != 'TooManyRequests') {
          //エラーの場合は一日だけキャッシュ
          $expiration = DAY_IN_SECONDS;
          //Amazon APIキャッシュの保存
          set_transient($transient_id, $res, $expiration);
        }
      }

      return get_amazon_admin_error_message_tag($associate_url, $admin_message);
    }

    //var_dump($item);
    ///////////////////////////////////////////
    // キャッシュ削除リンク
    ///////////////////////////////////////////
    $cache_delete_tag = get_cache_delete_tag('amazon', $asin);

    if (!is_paapi_json_item_exist($json)) {
      return get_amazon_admin_error_message_tag($associate_url, AMAZON_ASIN_ERROR_MESSAGE, $cache_delete_tag, $asin);
    }

    if (is_paapi_json_item_exist($json)) {
      $item = $json->{'ItemsResult'}->{'Items'}[0];
      //_v($item);

      ///////////////////////////////////////
      // アマゾンURL
      ///////////////////////////////////////
      $moshimo_amazon_base_url = 'https://af.moshimo.com/af/c/click?a_id='.$moshimo_amazon_id.'&p_id=170&pc_id=185&pl_id=4062&url=';
      $DetailPageURL = esc_url($item->DetailPageURL);
      if ($DetailPageURL) {
        $associate_url = $DetailPageURL;
      }
      $moshimo_amazon_url = null;
      $moshimo_amazon_impression_tag = null;
      if ($moshimo_amazon_id && is_moshimo_affiliate_link_enable()) {
        $moshimo_amazon_url = $moshimo_amazon_base_url.urlencode(get_amazon_associate_url($asin));
        $associate_url = $moshimo_amazon_url;
        //インプレッションタグ
        $moshimo_amazon_impression_tag = get_moshimo_amazon_impression_tag();
      }


      //イメージセットを取得する
      $Images = $item->{'Images'};
      $ImageItem = $Images->{'Primary'};
      //メイン画像以外の画像
      $Variants = isset($Images->{'Variants'}) ? $Images->{'Variants'} : array();

      //画像インデックスが設定されている場合
      if (!is_null($image_index) && $Variants) {
        //インデックスを整数型にする
        $image_index = intval($image_index);

        //有効なインデックスの場合
        if (!empty($Variants[$image_index])) {
          //インデックスが有効な場合は画像アイテムを入れ替える
          $ImageItem = $Variants[$image_index];
        }
      }
      //_v($ImageItem);

      //$Primary = $ImageItem->{'Primary'};
      $SmallImage = $ImageItem->{'Small'};
      $SmallImageUrl = $SmallImage->URL;
      $SmallImageWidth = $SmallImage->Width;
      $SmallImageHeight = $SmallImage->Height;
      $MediumImage = $ImageItem->{'Medium'};
      $MediumImageUrl = $MediumImage->URL;
      $MediumImageWidth = $MediumImage->Width;
      $MediumImageHeight = $MediumImage->Height;
      $LargeImage = $ImageItem->{'Large'};
      $LargeImageUrl = $LargeImage->URL;
      $LargeImageWidth = $LargeImage->Width;
      $LargeImageHeight = $LargeImage->Height;
      // _v($SmallImage);
      // _v($MediumImage);
      // _v($LargeImage);

      //サイズ設定
      $size = strtolower($size);
      switch ($size) {
        case 's':
          $size_class = 'pis-s';
          if ($SmallImageUrl) {
            $ImageUrl = $SmallImageUrl;
            $ImageWidth = $SmallImageWidth;
            $ImageHeight = $SmallImageHeight;
          } else {
            $ImageUrl = 'https://images-fe.ssl-images-amazon.com/images/G/09/nav2/dp/no-image-no-ciu._SL75_.gif';
            $ImageWidth = '75';
            $ImageHeight = '75';
          }
          break;
        case 'l':
          $size_class = 'pis-l';
          if ($LargeImageUrl) {
            $ImageUrl = $LargeImageUrl;
            $ImageWidth = $LargeImageWidth;
            $ImageHeight = $LargeImageHeight;
          } else {
            $ImageUrl = 'https://images-fe.ssl-images-amazon.com/images/G/09/nav2/dp/no-image-no-ciu._SL500_.gif';
            $ImageWidth = '500';
            $ImageHeight = '500';
          }
          break;
        default:
          $size_class = 'pis-m';
          if ($MediumImageUrl) {
            $ImageUrl = $MediumImageUrl;
            $ImageWidth = $MediumImageWidth;
            $ImageHeight = $MediumImageHeight;
          } else {
            $ImageUrl = 'https://images-fe.ssl-images-amazon.com/images/G/09/nav2/dp/no-image-no-ciu._SL160_.gif';
            $ImageWidth = '160';
            $ImageHeight = '160';
          }
          break;
      }

      $ItemInfo = isset($item->{'ItemInfo'}) ? $item->{'ItemInfo'} : null;
      //_v( $ItemInfo);

      if ($ItemInfo) {
        //説明文
        if (is_null($description)) {
          if (is_amazon_item_description_visible()) {
            $Features = isset($ItemInfo->{'Features'}) ? $ItemInfo->{'Features'} : null;
            $description = isset($Features->{'DisplayValues'}[0]) ? $Features->{'DisplayValues'}[0] : null;
          }
        }
      }


      ///////////////////////////////////////////
      // 商品リンク出力用の変数設定
      ///////////////////////////////////////////
      if ($title) {
        $Title = $title;
      } else {
        $Title = $ItemInfo->{'Title'}->{'DisplayValue'};
      }
      //_v($Title);
      $TitleAttr = esc_attr($Title);
      $TitleHtml = esc_html($Title);

      //商品グレープ
      $Classifications = $ItemInfo->{'Classifications'};
      $ProductGroup = esc_html($Classifications->{'ProductGroup'}->{'DisplayValue'});
      $ProductGroupClass = strtolower($ProductGroup);
      $ProductGroupClass = str_replace(' ', '-', $ProductGroupClass);

      $ByLineInfo = isset($ItemInfo->{'ByLineInfo'}) ? $ItemInfo->{'ByLineInfo'} : null;
      $Publisher = esc_html(isset($ByLineInfo->{'Publisher'}->{'DisplayValue'}) ? $ByLineInfo->{'Publisher'}->{'DisplayValue'} : null);
      $Manufacturer = esc_html(isset($ByLineInfo->{'Manufacturer'}->{'DisplayValue'}) ? $ByLineInfo->{'Manufacturer'}->{'DisplayValue'} : null);
      $Brand = esc_html(isset($ByLineInfo->{'Brand'}->{'DisplayValue'}) ? $ByLineInfo->{'Brand'}->{'DisplayValue'} : null);
      $Binding = esc_html(isset($ByLineInfo->{'Binding'}->{'DisplayValue'}) ? $ByLineInfo->{'Binding'}->{'DisplayValue'} : null);
      $Author = esc_html(isset($ByLineInfo->{'Author'}->{'DisplayValue'}) ? $ByLineInfo->{'Author'}->{'DisplayValue'} : null);
      $Artist = esc_html(isset($ByLineInfo->{'Artist'}->{'DisplayValue'}) ? $ByLineInfo->{'Artist'}->{'DisplayValue'} : null);
      $Actor = esc_html(isset($ByLineInfo->{'Actor'}->{'DisplayValue'}) ? $ByLineInfo->{'Actor'}->{'DisplayValue'} : null);
      $Creator = esc_html(isset($ByLineInfo->{'Creator'}->{'DisplayValue'}) ? $ByLineInfo->{'Creator'}->{'DisplayValue'} : null);
      $Director = esc_html(isset($ByLineInfo->{'Director'}->{'DisplayValue'}) ? $ByLineInfo->{'Director'}->{'DisplayValue'} : null);
      if ($Author) {
        $maker = $Author;
      } elseif ($Artist) {
        $maker = $Artist;
      } elseif ($Actor) {
        $maker = $Actor;
      } elseif ($Creator) {
        $maker = $Creator;
      } elseif ($Director) {
        $maker = $Director;
      } elseif ($Publisher) {
        $maker = $Publisher;
      } elseif ($Brand) {
        $maker = $Brand;
      } elseif ($Manufacturer) {
        $maker = $Manufacturer;
      } else {
        $maker = $Binding;
      }
      //_v($maker);

      $HighestPrice = null;
      $LowestPrice = null;
      $SavingBasisPrice = null;
      $Price = null;

      if (isset($item->{'Offers'})) {
        $Offers = $item->{'Offers'};
        $HighestPrice = isset($Offers->{'Summaries'}[0]->{'HighestPrice'}->{'DisplayAmount'}) ? $Offers->{'Summaries'}[0]->{'HighestPrice'}->{'DisplayAmount'} : null;
        $LowestPrice = isset($Offers->{'Summaries'}[0]->{'LowestPrice'}->{'DisplayAmount'}) ? $Offers->{'Summaries'}[0]->{'LowestPrice'}->{'DisplayAmount'} : null;

        $SavingBasisPrice = isset($Offers->{'Listings'}[0]->{'SavingBasis'}->{'DisplayAmount'}) ? $Offers->{'Listings'}[0]->{'SavingBasis'}->{'DisplayAmount'} : null;
        $Price = isset($Offers->{'Listings'}[0]->{'Price'}->{'DisplayAmount'}) ? $Offers->{'Listings'}[0]->{'Price'}->{'DisplayAmount'} : null;

        //$ListPrice = $item->ItemAttributes->ListPrice;
        //_v($FormattedPrice);
      }


      ///////////////////////////////////////////
      // デフォルト価格取得
      ///////////////////////////////////////////
      if ($SavingBasisPrice) {
        $FormattedPrice = $SavingBasisPrice;
      } else {
        if ($Price) {
          $FormattedPrice = $Price;
        } elseif ($LowestPrice) {
          $FormattedPrice = $LowestPrice;
        } else {
          $FormattedPrice = $HighestPrice;
        }
      }

      ///////////////////////////////////////////
      // Amazon価格タイプに合わせる
      ///////////////////////////////////////////
      switch (get_amazon_item_price_type()) {
        case 'price':
          $FormattedPrice = $Price ? $Price : $FormattedPrice;
          break;
        case 'lowest_price':
          $FormattedPrice = $LowestPrice ? $LowestPrice : $FormattedPrice;
          break;
        case 'highest_price':
          $FormattedPrice = $HighestPrice ? $HighestPrice : $FormattedPrice;
          break;
      }
      // if (is_amazon_item_lowest_price_visible()) {
      //   $FormattedPrice = $LowestPrice ? $LowestPrice : $FormattedPrice;
      // }


      //$associate_url = esc_url($base_url.$ASIN.'/'.$associate_tracking_id.'/');

      ///////////////////////////////////////////
      // 値段表記
      ///////////////////////////////////////////
      $item_price_tag = null;
      //JSONから時間情報を取得（無い場合は現時間）
      $acquired_date = isset($item->{'date'}) ? $item->{'date'} : date_i18n( 'Y/m/d H:i');
      if ((is_amazon_item_price_visible() || $price === '1')
            && $FormattedPrice
            && $price !== '0'
          ) {
        $item_price_tag = get_item_price_tag($FormattedPrice, $acquired_date);
      }
      ///////////////////////////////////////////
      // レビュー
      ///////////////////////////////////////////
      $review_tag = null;
      //_v($review);
      if ((is_amazon_item_customer_reviews_visible() || $review === '1')
          && $associate_tracking_id
          && $review !== '0') {
        $review_url = $review_url = get_amazon_review_url($asin, $associate_tracking_id);
        //_v($review_url);
        $review_tag =
          '<div class="amazon-item-review product-item-review item-review">'.
            '<span class="fa fa-comments-o" aria-hidden="true"></span> <a class="amazon-item-review-link  product-item-review-link item-review-link" href="'.esc_url($review_url).'" target="_blank" rel="nofollow noopener">'.
              get_amazon_item_customer_reviews_text().
            '</a>'.
          '</div>';
          //_v($review_tag);
      }


      ///////////////////////////////////////////
      // 説明文タグ
      ///////////////////////////////////////////
      $description_tag = get_item_description_tag($description);

      ///////////////////////////////////////////
      // 検索ボタンの作成
      ///////////////////////////////////////////
      $args = array(
        'keyword' => $keyword,
        'associate_tracking_id' => $associate_tracking_id,
        'rakuten_affiliate_id' => $rakuten_affiliate_id,
        'sid' => $sid,
        'pid' => $pid,
        'mercari_affiliate_id' => $mercari_affiliate_id,
        'dmm_affiliate_id' => $dmm_affiliate_id,
        'moshimo_amazon_id' => $moshimo_amazon_id,
        'moshimo_rakuten_id' => $moshimo_rakuten_id,
        'moshimo_yahoo_id' => $moshimo_yahoo_id,
        'amazon' => $amazon,
        'rakuten' => $rakuten,
        'yahoo' => $yahoo,
        'mercari' => $mercari,
        'dmm' => $dmm,
        'amazon_page_url' => $associate_url,
        'rakuten_page_url' => null,
        'btn1_url' => $btn1_url,
        'btn1_text' => $btn1_text,
        'btn1_tag' => $btn1_tag,
        'btn2_url' => $btn2_url,
        'btn2_text' => $btn2_text,
        'btn2_tag' => $btn2_tag,
        'btn3_url' => $btn3_url,
        'btn3_text' => $btn3_text,
        'btn3_tag' => $btn3_tag,
      );
      $buttons_tag = get_search_buttons_tag($args);

      //枠線非表示
      $border_class = null;
      if (!$border) {
        $border_class = ' no-border';
      }

      //ロゴ非表示
      $logo_class = null;
      if ((!is_amazon_item_logo_visible() && is_null($logo)) || (!$logo && !is_null($logo) )) {
        $logo_class = ' no-after';
      }

      ///////////////////////////////////////////
      // 管理者情報タグ
      ///////////////////////////////////////////
      $product_item_admin_tag = get_product_item_admin_tag($cache_delete_tag);

      ///////////////////////////////////////////
      // イメージリンクタグ
      ///////////////////////////////////////////
      //テーマ設定もしくはcatalog=1で機能が有効な場合
      $is_catalog_image_visible =
        (is_amazon_item_catalog_image_visible() && is_null($samples)) ||
        (!is_null($samples) && $samples);

      $image_l_tag = null;
      if ($is_catalog_image_visible && ($size != 'l') && $LargeImageUrl) {
        $image_l_tag =
          '<div class="amazon-item-thumb-l product-item-thumb-l image-content">'.
            '<img src="'.esc_url($LargeImageUrl).'" alt="" width="'.esc_attr($LargeImageWidth).'" height="'.esc_attr($LargeImageHeight).'">'.
          '</div>';
      }
      $swatchimages_tag = null;

      if ($Images && !$image_only && $is_catalog_image_visible) {

        $tmp_tag = null;
        for ($i=0; $i < count($Variants)-1; $i++) {
          $display_none_class = null;
          if (($size != 'l') && ($i >= 3)) {
            $display_none_class .= ' sp-display-none';
          }
          if (($size == 's') && ($i >= 3) || ($size == 'm') && ($i >= 5)) {
            $display_none_class .= ' display-none';
          }

          $Variant = $Variants[$i];
          //SwatchImage
          $SwatchImage = $Variant->{'Small'};
          $SwatchImageURL = $SwatchImage->URL;
          $SwatchImageWidth = $SwatchImage->Width;
          $SwatchImageHeight = $SwatchImage->Height;

          //LargeImage
          $LargeImage = $Variant->{'Large'};
          $LargeImageURL = $LargeImage->URL;
          $LargeImageWidth = $LargeImage->Width;
          $LargeImageHeight = $LargeImage->Height;

          $tmp_tag .=
            '<div class="image-thumb swatch-image-thumb si-thumb'.esc_attr($display_none_class).'">'.
              '<img src="'.esc_url($SwatchImageURL).'" alt="" width="'.esc_attr($SwatchImageWidth).'" height="'.esc_attr($SwatchImageHeight).'">'.
              '<div class="image-content">'.
              '<img src="'.esc_url($LargeImageURL).'" alt="" width="'.esc_attr($LargeImageWidth).'" height="'.esc_attr($LargeImageHeight).'">'.
              '</div>'.
            '</div>';
        }
        $swatchimages_tag = '<a href="'.esc_url($associate_url).'" class="swatchimages" target="_blank" rel="nofollow noopener">'.$tmp_tag.'</a>';
      }
      $image_only_class = null;
      if ($image_only) {
        $image_only_class = ' amazon-item-image-only product-item-image-only no-icon';
      }
      $image_link_tag = '<a href="'.esc_url($associate_url).'" class="amazon-item-thumb-link product-item-thumb-link image-thumb'.esc_attr($image_only_class).'" target="_blank" title="'.esc_attr($TitleAttr).'" rel="nofollow noopener">'.
              '<img src="'.esc_url($ImageUrl).'" alt="'.esc_attr($TitleAttr).'" width="'.esc_attr($ImageWidth).'" height="'.esc_attr($ImageHeight).'" class="amazon-item-thumb-image product-item-thumb-image">'.
              $moshimo_amazon_impression_tag.
              $image_l_tag.
            '</a>'.
            $swatchimages_tag;
      //画像のみ出力する場合
      if ($image_only) {
        return apply_filters('amazon_product_image_link_tag', $image_link_tag);
      }

      //画像ブロック
      $image_figure_tag =
        '<figure class="amazon-item-thumb product-item-thumb">'.
          $image_link_tag.
          //$image_l_tag.
        '</figure>';

      ///////////////////////////////////////////
      // Amazonテキストリンク
      ///////////////////////////////////////////
      $text_only_class = null;
      if ($text_only) {
        $text_only_class = ' amazon-item-text-only product-item-text-only';
      }
      $text_link_tag =
        '<a href="'.esc_url($associate_url).'" class="amazon-item-title-link product-item-title-link'.esc_attr($text_only_class).'" target="_blank" title="'.esc_attr($TitleAttr).'" rel="nofollow noopener">'.
        $TitleHtml.
        $moshimo_amazon_impression_tag.
        '</a>';
      if ($text_only) {
        return apply_filters('amazon_product_text_link_tag', $text_link_tag);
      }

      ///////////////////////////////////////////
      // 商品リンクタグの生成
      ///////////////////////////////////////////
      $tag =
        '<div class="amazon-item-box product-item-box no-icon '.$size_class.$border_class.$logo_class.' '.esc_attr($ProductGroupClass).' '.esc_attr($asin).' cf">'.
          $image_figure_tag.
          '<div class="amazon-item-content product-item-content cf">'.
            '<div class="amazon-item-title product-item-title">'.
            $text_link_tag.
            '</div>'.
            '<div class="amazon-item-snippet product-item-snippet">'.
              '<div class="amazon-item-maker product-item-maker">'.
                $maker.
              '</div>'.
              $item_price_tag.
              $description_tag.
              $review_tag.
            '</div>'.
            $buttons_tag.
          '</div>'.
          $product_item_admin_tag.
        '</div>';
    } else {
      $tag = get_amazon_admin_error_message_tag($associate_url, AMAZON_ASIN_ERROR_MESSAGE, $cache_delete_tag, $asin);
    }

    return apply_filters('amazon_product_link_tag', $tag);
  }

}
endif;


//PA-APIで商品情報を取得できなかった場合のエラーログ
if ( !function_exists( 'error_log_to_amazon_product' ) ):
function error_log_to_amazon_product($asin, $message = ''){
  //エラーログに出力
  $date = date_i18n("Y-m-d H:i:s");
  $msg = $date.','.
         $asin.','.
         get_the_permalink().
         PHP_EOL;
  error_log($msg, 3, get_theme_amazon_product_error_log_file());

  //メールで送信
  if (is_api_error_mail_enable()) {
    $subject = __( 'Amazon商品取得エラー', THEME_NAME );
    $mail_msg =
      __( 'Amazon商品リンクが取得できませんでした。', THEME_NAME ).PHP_EOL.
      PHP_EOL.
      'ASIN:'.$asin.PHP_EOL.
      'URL:'.get_the_permalink().PHP_EOL.
      'Message:'.$message.PHP_EOL.
      THEME_MAIL_AMAZON_PR.THEME_MAIL_CREDIT;
    wp_mail( get_wordpress_admin_email(), $subject, $mail_msg );
  }
}
endif;

//Amazonエラーの際に出力するリンクを
if ( !function_exists( 'get_amazon_error_product_link' ) ):
function get_amazon_error_product_link($url){
  return '<a href="'.esc_url($url).'" target="_blank" rel="nofollow noopener">'.__( 'Amazonで詳細を見る', THEME_NAME ).'</a>';
}
endif;

//AmazonのASINエラータグ取得
if ( !function_exists( 'get_amazon_admin_error_message_tag' ) ):
function get_amazon_admin_error_message_tag($url, $message, $cache_delete_tag = null, $asin = null){
  $error_message = get_amazon_error_product_link($url);
  if (is_user_administrator()) {
    $asin_msg = null;
    if ($asin) {
      $asin_msg = '(ASIN:'.$asin.')';
    }
    $error_message .= '<br><br>'.get_admin_errormessage_box_tag($message.$asin_msg);
  }
  return wrap_product_item_box($error_message, 'amazon', $cache_delete_tag);
}
endif;