<?php
  /**
   * @package 8digits
   * @version 1.1
   */
  /*
  Plugin Name: 8digits
  Plugin URI: http://wordpress.org/plugins/8digits/
  Description: Plugin for 8digits.com to integrate your woocommerce store with 8digits easily!
  Author: 8digits
  Version: 1.1
  Author URI: http://www.8digits.com/
  */

  if(!defined('ABSPATH')) {
    exit;
  }

  define('ED_IS_WOO_ENABLED', in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins'))));


  if(!class_exists('EightDigits') && ED_IS_WOO_ENABLED) {

    /**
     *
     */
    final class EightDigits {

      /**
       * @var string
       */
      public static $version = '1.1';

      /**
       * @var EightDigits instance of class
       */
      private static $_instance = null;

      /**
       * @var null
       */
      private $pluginDir = null;

      /**
       * @var string
       */
      private $_extraCodeBefore = '';

      /**
       * @var string
       */
      private $_8digitsInterface = 'http://www.8digits.com';

      /**
       * @var string
       */
      private $_8digitsStaticInterface = '//cdn.8digits.com';


      /**
       * Creates instance of EightDigits class
       *
       * @return EightDigits|null
       */
      public static function instance() {

        if(self::$_instance == null) {
          self::$_instance = new self();
        }

        return self::$_instance;
      }

      /**
       *
       */
      public function __construct() {
        $this->initialize();
        $this->buildMenu();
      }

      /**
       *
       */
      public function initialize() {
        $this->pluginDir = plugin_dir_path(__FILE__);

        /**
         * Adds 8digits tracking code to page
         */
        add_action('wp_footer', array($this, 'add8digitsCode'));

        /**
         * Product view
         */
        add_action('the_post', array($this, 'view'));

        register_activation_hook(__FILE__, array($this, 'activate'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate'));
      }

      /**
       *
       */
      private function buildMenu() {
        add_action('admin_init', array($this, 'adminInit'));
        add_action('admin_menu', array($this, 'pluginMenu'));
      }

      /**
       *
       */
      public function activate() {

      }

      /**
       *
       */
      public function deactivate() {

      }

      /**
       *
       */
      public function adminInit() {
        add_settings_section(
          'eightdigits_setting_section',
          'Account Settings',
          array($this, 'accountSettingsSectionRenderer'),
          '8digits'
        );

        add_settings_field(
          'eightdigits_tracking_code',
          'Tracking Code',
          array($this, 'textFieldRenderer'),
          '8digits',
          'eightdigits_setting_section',
          array(
            'id'    => 'eightdigits_tracking_code',
            'label' => 'Type your Tracking Code here.'
          )
        );
        
        add_settings_field(
          'eightdigits_access_token',
          'Access Token',
          array($this, 'textFieldRenderer'),
          '8digits',
          'eightdigits_setting_section',
          array(
            'id'    => 'eightdigits_access_token',
            'label' => 'Type your Access Token here.'
          )
        );

        add_settings_field(
            'eightdigits_installation_notified',
            '',
            array($this, 'hiddenFieldRenderer'),
            '8digits',
            'eightdigits_setting_section',
            array(
                'name'    => 'eightdigits_installation_notified',
                'default' => '1'
            )
        );

        register_setting('8digits', 'eightdigits_tracking_code');
        register_setting('8digits', 'eightdigits_access_token');
        register_setting('8digits', 'eightdigits_installation_notified');
      }

      /**
       *
       */
      public function pluginMenu() {
         add_menu_page('8digits', '8digits', 'manage_options', '8digits', array($this, 'adminPage'));
      }
      
      public function styleRenderer() {
      	$output = '<style>' . PHP_EOL;
		$output .= '.eightdigits-app-iframe {bottom: 0;box-sizing: border-box;height: 100%;left: 0;position: absolute;';
		$output .= 'right: 0;top: 0;width: 100%;min-height: 575px;max-height: 800px;}' . PHP_EOL;
		$output .= '.eightdigits-error {color: red;}' . PHP_EOL;
		$output .= '</style>';
		
		echo $output;
      
      }
      
      public function adminPage() {
      	$adminEmail = get_option('admin_email');
		$siteUrl = get_option('siteurl');
      	$trackingCode = get_option('eightdigits_tracking_code');
		$accessToken = get_option('eightdigits_access_token');
		
		$error = '';
		if (empty($trackingCode) || empty($accessToken)) {
			// new installation: create profile and access token
			// create url
			$url = $this->_8digitsInterface . '/frame/auth';
			$url .= '?shop=' . $siteUrl;
			$url .= '&token=' . $accessToken;
			$url .= '&trackingCode=' . $trackingCode;
			$url .= '&email=' . urlencode($adminEmail);  // user may have + in email address
			$url .= '&type=woocommerce';
			
			// var_dump($url);
			$response = wp_remote_get($url, array( 'timeout' => 120));
			// var_dump($response);
			if ( !is_wp_error( $response ) ) {
				$data = wp_remote_retrieve_body( $response );
				
				if ( !is_wp_error( $data ) ) {
					$result = json_decode($data, true);
					if ($result['status']) {
						$trackingCode = $result['trackingCode'];
						$accessToken = $result['accessToken'];
						
						update_option('eightdigits_tracking_code', $trackingCode);
						update_option('eightdigits_access_token', $accessToken);
					} else {
						$error .= '<p class="eightdigits-error">' . $result['error'] . '</p>';
					}
				}
			}
			
		}
		
		// echo page output
		$this->styleRenderer();
		if (!empty($trackingCode) && !empty($accessToken)) {
			$this->iframePage();
		} else {
			if (!empty($error)) {
				echo $error;
			}
			$this->optionsPage();
		}
		$this->renderNotifyScript();
      }

      /**
       *
       */
      public function optionsPage() {
        echo '<div class="wrap">';
        echo '<h2>8digits Options</h2>';
        echo '<form method="post" action="options.php">';
        settings_fields('8digits');
        do_settings_sections('8digits');
        submit_button();
        echo '</form>';
        echo '</div>';
        
      }
      
      
     /**
      *  Renders notification script
      *  This is for 8digits to be notified on new installations
      *  and offer support to find the best ways to run solutions
      *  for your site.
      */
      public function renderNotifyScript() {
          $notified = get_option('eightdigits_installation_notified');

          if (!($notified)) {
              $output .= <<<EOD
              <script type='text/javascript'>
                if(typeof jQuery!="undefined") {
                    addLoadEvent(function() {
                        jQuery.ajax({
                          url: '$this->_8digitsInterface/wordpress/installed',
                          method: 'POST',
                          dataType: 'jsonp',
                          data: {
                              siteurl: '$siteUrl',
                              email: '$adminEmail'
                          }
                        })
                    }());
                }
              </script>
EOD;

              update_option('eightdigits_installation_notified', true);
          }

          echo $output;
      }
      
      public function iframePage() {
      	$adminEmail = get_option('admin_email');
		$siteUrl = get_option('siteurl');
		$trackingCode = get_option('eightdigits_tracking_code');
		$accessToken = get_option('eightdigits_access_token');
		
		$output = '<iframe name="eightdigits-app-iframe" class="eightdigits-app-iframe" frameborder="0" src="';
		$output .= $this->_8digitsInterface . '/frame/auth';
		$output .= '?shop=' . $siteUrl;
		$output .= '&token=' . $accessToken;
		$output .= '&trackingCode=' . $trackingCode;
		$output .= '&email=' . urlencode($adminEmail); // user may have + in email address
		$output .= '&type=woocommerce"></iframe>';
		
		echo $output;
      }
      
      /**
       * Renders section header for settings
       */
      public function accountSettingsSectionRenderer() {
          $output = '<p>To activate 8digits, type in your tracking code and access token, and save changes.</p>';
          $output .= '<ul>';
          $output .= '<li>If you have not registered with 8digits yet please <a href="' . $this->_8digitsInterface . '/index/signup/woocommerce" target="_blank" class="button-primary">sign up now</a></li>';
          $output .= '<li>If you already have an account but you do not remember your tracking code or access token please visit your <a href="' . $this->_8digitsInterface . '/index/login/woocommerceIntegration" target="_blank" class="button-primary">integration page</a></li>';
          $output .= '</ul>';

          echo $output;
      }

      /**
       * Renders input box for option
       */
      public function textFieldRenderer() {
        $args  = func_get_args();
        $args = $args[0];

        $id    = $args['id'];
        $label = $args['label'];

        echo '<input name="' . $id . '" id="' . $id . '" type="text" style="width:300px" value="' . get_option($id) . '" /> ' . $label;
      }


        /**
         * Renders hidden input box for option
         */
        public function hiddenFieldRenderer() {
            $args  = func_get_args();
            $args = $args[0];

            $name    = $args['name'];
            $defaultVal = $args['default'];
            $optVal = get_option($name);

            echo '<input name="' . $name . '" type="hidden" value="' . ($optVal ? $optVal : $defaultVal) . '" /> ';
        }

      /**
       * Adds 8digits integration code to footer. Also, renders scraping code to get called when 8digits JS SDK is ready.
       */
      public function add8digitsCode() {
        $trackingCode = get_option('eightdigits_tracking_code');

        $output = '';

        if($trackingCode) {

          if($this->_extraCodeBefore) {
            $output .= $this->_extraCodeBefore;
          }

          $version = self::$version;

          $output .= <<<EOD
          <script type='text/javascript'>
            var _trackingCode = '$trackingCode';
            (function() {
              var wa = document.createElement('script'); wa.type = 'text/javascript'; wa.async = true;
              wa.src = '$this->_8digitsStaticInterface/automation.js';
              var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(wa, s);
            })();
          </script>
          <!-- 8digits WooCommerce Plugin Version : $version -->
EOD;

        }

        echo $output;
      }

      /**
       * Creates scraping code according to page. Currently, we are handling cart, checkout and congrats pages.
       *
       * @param $post
       */
      public function view($post) {
        global $woocommerce;

        if(is_shop()) {

        } else if(is_product_category()) {

        } else if(is_product_tag()) {

        } else if(is_product()) {

        } else if(is_cart()) {
          
          $cartItems = $woocommerce->cart->get_cart();
          if (empty($cartItems) || !is_array($cartItems)) break;
          
          $dataLayer = array(
			'price' => "".$woocommerce->cart->total,
			'itemCount' => "".$woocommerce->cart->get_cart_contents_count(),
			'products' => array()
		  );

          $products  = array();
			
          foreach($cartItems AS $key => $item) {
            $product = $item['data'];
            
            if (empty($products[$product->get_sku()])) {
            	$terms = get_the_terms( $product->id, 'product_cat' );
            	$categories = array();
            	foreach ( $terms as $term ){
    				$categories[] = $term->name;
    			}
            	
				// Build all fields the first time we encounter this item.
				$products[$product->get_sku()] = array(
					'name' => $product->get_title(),
					'sku' => $product->get_sku(),
					'category' => implode('|',$categories),
					'price' => (double)number_format($product->get_sale_price(),2,'.',''),
					'quantity' => (int)$item['quantity']
				);
		  	} else {
				// If we already have the item, update quantity.
				$products[$product->get_sku()]['quantity'] += (int)$item['quantity'];
		  	}
          }
          
          // Push products into main data array.
		  foreach ($products as $product) {
			$dataLayer['products'][] = $product;
		  }

		  // Trim empty fields from the final output.
		  foreach ($dataLayer as $key => $value) {
			if (!is_numeric($value) && empty($value)) unset($dataLayer[$key]);
		  }
		  
		  if (!empty($dataLayer)) {
		  	$attributeList = json_encode($dataLayer);
		  	
          	$this->_extraCodeBefore = <<<EOF
          	<script type="text/javascript">
          		var EightDigitsData = $attributeList;
          		
            	function EightDigitsReady() {
              		EightDigits.setAttributes($attributeList);

              		setTimeout(function() {
                		EightDigits.event({ key: 'CartDisplayed', noPath: true });
              		}, 500);
				}
          	</script>
EOF;
		  }
        } else if(is_checkout()) {
          $this->_extraCodeBefore = <<<EOF
          <script type="text/javascript">
            function EightDigitsReady() {
              EightDigits.event({ key: 'CheckoutDisplayed', noPath: true });
            }

            var attributeNamesMap = {
              'billing_first_name': 'firstName',
              'billing_last_name': 'lastName',
              'billing_company': 'company',
              'billing_email': 'email',
              'billing_phone': 'phone'
            };

            jQuery(function() {
              jQuery('.woocommerce-billing-fields').find('input[type="text"]').on('blur', function() {
                var el = jQuery(this);
                var id = el.attr('id');
                var value = el.val();

                if(attributeNamesMap.hasOwnProperty(id)) {
                  var attributeName = attributeNamesMap[id];
                  EightDigits.setAttribute({
                    name: attributeName,
                    value: value
                  });
                }


              })
            })

          </script>
EOF;
        } else if(is_account_page()) {

        } else if(is_order_received_page()) {
          $this->_extraCodeBefore = <<<EOF
          <script type="text/javascript">
            function EightDigitsReady() {
              EightDigits.event({ key: 'OrderReceivedDisplayed', noPath: true });
            }
          </script>
EOF;

        }

      }
    }

    EightDigits::instance();

  }


?>