<?php

/**
 * Description of class
 *
 * @author yongquizheng
 */
class AdditionalCharge {
    
        private static $initiated = false;
        public static $rates_default=array('0.10','0.15','0.18','0.20');
        public static $domain=ADDITIONAL_CHARGE_DOMAIN;
        
        public static $rate_var ='ac-charge-rates';
        public static $heading_var='ac-heading';
        public static $message_var='ac-message';
        public static $btn_var='ac-btn';
        public static $fee_label_var='ac-fee-label';

        protected static $default_btn;
        protected static $default_message;
        protected static $default_heading;
        protected static $default_fee_label;
        
        
        public static function init() {
		if ( ! self::$initiated ) {
			self::init_hooks();
		}
                self::$default_btn = __("Add Charge",self::$domain);
                self::$default_heading = __("Additional Charge",self::$domain);
                self::$default_message= __("Charge has been added",self::$domain);
                self::$default_fee_label= __("Additional Charge",self::$domain);
        }
        /**
	 * Initializes WordPress hooks
	 */
	private static function init_hooks() {
		self::$initiated = true;
                add_action('woocommerce_after_order_notes',array('AdditionalCharge','add_additional_charge_section'));
                add_action('init',array('AdditionalCharge','init_domain'),97);
                add_action('init',array('AdditionalCharge','init_session'),96);
                add_action('init',array('AdditionalCharge','registerScriptAndStyle'),98);
                
                add_action('wp_enqueue_scripts', array('AdditionalCharge','enqueueScriptAndStyle'),99);
                
                add_action('wp_ajax_nopriv_add_charge',array('AdditionalCharge','add_charge'),10);
                add_action('wp_ajax_add_charge',array('AdditionalCharge','add_charge'),10);
                add_action('woocommerce_cart_calculate_fees', array('AdditionalCharge','add_charge_cost_from_session'),10);
                add_action('woocommerce_thankyou',array('AdditionalCharge','unset_charge_session'),10);
	}
        public static function unset_charge_session(){
            // we need to unset the charge value in the session after order has been placed
            unset($_SESSION['charge_value']);// try to unset the session before checkout cart begin
        }
        
        public static function add_charge(){            
                $cost = filter_input(INPUT_POST,'charge',FILTER_VALIDATE_FLOAT);
                $charge = floatval($cost);
                if($charge!=0.0){
                    $option_message = get_option(self::$message_var);
                     $message = empty($option_message)?self::$default_message:$option_message;
                    $_SESSION['charge_value']=$charge;
                    echo json_encode(array("status"=>1,"message"=>$message));
                }else{
                    echo json_encode(array("status"=>0,"message"=>__("Failed to add tip","shundao")));
                }
                exit();
        }
        public static function add_charge_cost_from_session() {
            $cart= wc()->cart;
            $charge=$_SESSION['charge_value'];
            if(!empty($charge)){
                $charge_label= empty(get_option(self::$fee_label_var))?self::$default_fee_label:get_option(self::$fee_label_var);
                $cart->add_fee($charge_label,$charge);
            }
        }
        
        public static function init_domain(){
           load_plugin_textdomain( self::$domain );
        }
        
        public static function init_session(){
              $status = session_status();
            if ( PHP_SESSION_DISABLED === $status ) {
                // That's why you cannot rely on sessions!
                return;
            }
            if ( PHP_SESSION_NONE === $status ) {
                session_start();
            }
        }


        public static function registerScriptAndStyle(){
            // try loading the script
            $initJs =plugins_url('/public/assets/js/init.js', __FILE__);
            $styleCss =plugins_url('/public/assets/css/additionalcharge.css', __FILE__);
            wp_register_script( 'ac_script',$initJs );
            wp_register_style( 'ac_style', $styleCss);
            
        }
        
        public static function enqueueScriptAndStyle(){
            wp_enqueue_script('ac_script');
            wp_enqueue_style('ac_style');
        }
        
        
    	/**
	 * Attached to activate_{ plugin_basename( __FILES__ ) } by register_activation_hook()
	 * @static
	 */
	public static function plugin_activation() {
                if(!class_exists( 'WooCommerce' )){
                    self::failActivation(__("WooCommerce is require for this plugin",ADDITIONAL_CHARGE_DOMAIN));
                    // woocommerce doesn't exist
                    exit;
                }
	}
        
        private static function failActivation($message){
    
           ?>
           <html>
            <head>
            <meta charset="<?php bloginfo( 'charset' ); ?>">
            <style>
            * {
                    text-align: center;
                    margin: 0;
                    padding: 0;
                    font-family: "Lucida Grande",Verdana,Arial,"Bitstream Vera Sans",sans-serif;
            }
            p {
                    margin-top: 1em;
                    font-size: 18px;
            }
            </style>
            <body>
            <p><?php echo esc_html( $message ); ?></p>
            </body>
            </html>
    <?php
        }

	/**
	 * Removes all connection options
	 * @static
	 */
	public static function plugin_deactivation( ) {
	}
        
        // adding actions
        public static function add_additional_charge_section(){
            global $woocommerce;
            //TODO: need to the rate to the admin page
            $option_rates = get_option(self::$rate_var);
            $option_heading = get_option(self::$heading_var);
            $option_btn= get_option(self::$btn_var);
            $rates = empty($option_rates)?self::$rates_default:explode(',', $option_rates);
            $heading = empty($option_heading)?self::$default_heading:$option_heading;
            $btn = empty($option_btn)?self::$default_btn:$option_btn;
            // we handle output the additional charge to woocommerce section
            $cart_total = $woocommerce->cart->cart_contents_total;
        ?>
            <div class="addtional-charge-info-cont">
                <p class="addtional-charge-info"></p>
            </div>
            <div class="additional-charge-cont">
                <h4><?php echo $heading;  ?><div id="ac-spinner" class="ac-spinner"></div></h4>
                <div class="addtional-charge-radio-cont">
                    <p class="addtional-charge-message do-not-show"></p>
                    <?php for($i=0;$i<count($rates);$i++){ ?>
                        <input class="ac-selection" checked="checked"  
                               type="radio" 
                               id="ac-radio-<?php echo $i ?>" 
                               name="ac-radios" 
                               value="<?php echo (number_format(($rates[$i] * $cart_total),2)); ?>">
                        <label for="ac-radio-<?php echo $i ?>">
                            <?php echo (number_format($rates[$i] * 100))."% ($".(number_format(($rates[$i] * $cart_total),2)).")";?>
                        </label>
                    <?php } ?>
                        
                      <div class="additional-charge-control">
                        <input type="text" name="additional-charge-value" 
                               class="input-text-ac" id="input-text-ac" value="">
                        <button id="ac-add-charge" type="button"><?php echo $btn; ?></button>
                      </div>    
                </div>
            </div>
<?php
        }
}