jQuery(document).ready(function($) {

	var updateTimer;
	var dirtyInput = false;
	var xhr;

	function update_checkout() {

		if (xhr) xhr.abort();

		if ( $('select#shipping_method').size() > 0 )
			var method = $('select#shipping_method').val();
		else
			var method = $('input[name=shipping_method]:checked').val();

		var payment_method 	= $('#order_review input[name=payment_method]:checked').val();
		var country 		= $('#billing_country').val();
		var state 			= $('#billing_state').val();
		var postcode 		= $('input#billing_postcode').val();
		var city	 		= $('input#billing_city').val();
		var address	 		= $('input#billing_address_1').val();
		var address_2	 	= $('input#billing_address_2').val();

		if ( $('#shiptobilling input').is(':checked') || $('#shiptobilling input').size() == 0 ) {
			var s_country 	= country;
			var s_state 	= state;
			var s_postcode 	= postcode;
			var s_city 		= city;
			var s_address 	= address;
			var s_address_2	= address_2;
		} else {
			var s_country 	= $('#shipping_country').val();
			var s_state 	= $('#shipping_state').val();
			var s_postcode 	= $('input#shipping_postcode').val();
			var s_city 		= $('input#shipping_city').val();
			var s_address 	= $('input#shipping_address_1').val();
			var s_address_2	= $('input#shipping_address_2').val();
		}

		$('#order_methods, #order_review').block({message: null, overlayCSS: {background: '#fff url(' + woocommerce_params.ajax_loader_url + ') no-repeat center', backgroundSize: '16px 16px', opacity: 0.6}});

		var data = {
			action: 			'woocommerce_update_order_review',
			security: 			woocommerce_params.update_order_review_nonce,
			shipping_method: 	method,
			payment_method:		payment_method,
			country: 			country,
			state: 				state,
			postcode: 			postcode,
			city:				city,
			address:			address,
			address_2:			address_2,
			s_country: 			s_country,
			s_state: 			s_state,
			s_postcode: 		s_postcode,
			s_city:				s_city,
			s_address:			s_address,
			s_address_2:		s_address_2,
			post_data:			$('form.checkout').serialize()
		};

		xhr = $.ajax({
			type: 		'POST',
			url: 		woocommerce_params.ajax_url,
			data: 		data,
			success: 	function( response ) {
				if ( response ) {
					var order_output = $(response);
					$('#order_review').html(order_output.html());
					$('body').trigger('updated_checkout');
				}
			}
		});

	}

	// Event for updating the checkout
	$('body').bind('update_checkout', function() {
		clearTimeout(updateTimer);
		update_checkout();
	});

	$('p.password, form.login, .checkout_coupon, div.shipping_address').hide();

	$('input.show_password').change(function(){
		$('p.password').slideToggle();
	});

	$('a.showlogin').click(function(){
		$('form.login').slideToggle();
		return false;
	});

	$('a.showcoupon').click(function(){
		$('.checkout_coupon').slideToggle();
		$('#coupon_code').focus();
		return false;
	});

	$('#shiptobilling input').change(function(){
		$('div.shipping_address').hide();
		if (!$(this).is(':checked')) {
			$('div.shipping_address').slideDown();
		}
	}).change();

	if ( woocommerce_params.option_guest_checkout == 'yes' ) {

		$('div.create-account').hide();

		$('input#createaccount').change(function(){
			$('div.create-account').hide();
			if ($(this).is(':checked')) {
				$('div.create-account').slideDown();
			}
		}).change();

	}

	// Used for input change events below
	function input_changed() {
		var update_totals = true;

		if ( $(dirtyInput).size() ) {

			$required_siblings = $(dirtyInput).closest('.form-row').siblings('.address-field.validate-required');

			if ( $required_siblings.size() ) {
				 $required_siblings.each(function(){
					if ( $(this).find('input.input-text').val() == '' || $(this).find('input.input-text').val() == 'undefined' ) {
						update_totals = false;
					}
				 });
			}

		}

		if ( update_totals ) {
			dirtyInput = false;
			$('body').trigger('update_checkout');
		}
	}

	$('#order_review')

	/* Payment option selection */

	.on( 'click', '.payment_methods input.input-radio', function() {
		if ( $('.payment_methods input.input-radio').length > 1 ) {
			$('div.payment_box').filter(':visible').slideUp(250);
			if ($(this).is(':checked')) {
				$('div.payment_box.' + $(this).attr('ID')).slideDown(250);
			}
		} else {
			$('div.payment_box').show();
		}
	})

	// Trigger initial click
	.find('input[name=payment_method]:checked').click();

	$('form.checkout')

	/* Update totals/taxes/shipping */

	// Inputs/selects which update totals instantly
	.on( 'change', 'select#shipping_method, input[name=shipping_method], #shiptobilling input, .update_totals_on_change select', function(){
		clearTimeout( updateTimer );
		dirtyInput = false;
		$('body').trigger('update_checkout');
	})

	// Address-fields which refresh totals when all required fields are filled
	.on( 'change', '.address-field input.input-text, .update_totals_on_change input.input-text', function() {
		if ( dirtyInput ) {
			input_changed();
		}
	})

	.on( 'change', '.address-field select', function() {
		dirtyInput = this;
		input_changed();
	})

	.on( 'keydown', '.address-field input.input-text, .update_totals_on_change input.input-text', function( e ){
		var code = e.keyCode || e.which;
		if ( code == '9' )
			return;
		dirtyInput = this;
		clearTimeout( updateTimer );
		updateTimer = setTimeout( input_changed, '1000' );
	})

	/* Inline validation */

	.on( 'blur change', '.input-text, select', function() {
		var $this = $(this);
		var $parent = $this.closest('.form-row');
		var validated = true;

		if ( $parent.is( '.validate-required' ) ) {
			if ( $this.val() == '' ) {
				$parent.removeClass( 'woocommerce-validated' ).addClass( 'woocommerce-invalid woocommerce-invalid-required-field' );
				validated = false;
			}
		}

		if ( $parent.is( '.validate-email' ) ) {
			if ( $this.val() ) {

				/* http://stackoverflow.com/questions/2855865/jquery-validate-e-mail-address-regex */
				var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);

				if ( ! pattern.test( $this.val()  ) ) {
					$parent.removeClass( 'woocommerce-validated' ).addClass( 'woocommerce-invalid woocommerce-invalid-email' );
					validated = false;
				}
			}
		}

		if ( validated ) {
			$parent.removeClass( 'woocommerce-invalid woocommerce-invalid-required-field' ).addClass( 'woocommerce-validated' );
		}
	} )

	/* AJAX Form Submission */

	.submit( function() {
		clearTimeout( updateTimer );

		var $form = $(this);

		if ( $form.is('.processing') )
			return false;

		// Trigger a handler to let gateways manipulate the checkout if needed
		if ( $form.triggerHandler('checkout_place_order') !== false && $form.triggerHandler('checkout_place_order_' + $('#order_review input[name=payment_method]:checked').val() ) !== false ) {

			$form.addClass('processing');

			var form_data = $form.data();

			if ( form_data["blockUI.isBlocked"] != 1 )
				$form.block({message: null, overlayCSS: {background: '#fff url(' + woocommerce_params.ajax_loader_url + ') no-repeat center', backgroundSize: '16px 16px', opacity: 0.6}});

			$.ajax({
				type: 		'POST',
				url: 		woocommerce_params.checkout_url,
				data: 		$form.serialize(),
				success: 	function( code ) {
						try {
							// Get the valid JSON only from the returned string
							if ( code.indexOf("<!--WC_START-->") >= 0 )
								code = code.split("<!--WC_START-->")[1]; // Strip off before after WC_START

							if ( code.indexOf("<!--WC_END-->") >= 0 )
								code = code.split("<!--WC_END-->")[0]; // Strip off anything after WC_END

							// Parse
							var result = $.parseJSON( code );

							if (result.result=='success') {

								window.location = decodeURI(result.redirect);

							} else if (result.result=='failure') {

								$('.woocommerce-error, .woocommerce-message').remove();
								$form.prepend( result.messages );
								$form.removeClass('processing').unblock();
								$form.find( '.input-text, select' ).blur();

								if (result.refresh=='true') $('body').trigger('update_checkout');

								$('html, body').animate({
								    scrollTop: ($('form.checkout').offset().top - 100)
								}, 1000);

							} else {
								throw "Invalid response";
							}
						}
						catch(err) {
							$('.woocommerce-error, .woocommerce-message').remove();
						  	$form.prepend( code );
							$form.removeClass('processing').unblock();
							$form.find( '.input-text, select' ).blur();

							$('html, body').animate({
							    scrollTop: ($('form.checkout').offset().top - 100)
							}, 1000);
						}
					},
				dataType: 	"html"
			});

		}

		return false;
	});

	/* AJAX Coupon Form Submission */
	$('form.checkout_coupon').submit( function() {
		var $form = $(this);

		if ( $form.is('.processing') ) return false;

		$form.addClass('processing').block({message: null, overlayCSS: {background: '#fff url(' + woocommerce_params.ajax_loader_url + ') no-repeat center', backgroundSize: '16px 16px', opacity: 0.6}});

		var data = {
			action: 			'woocommerce_apply_coupon',
			security: 			woocommerce_params.apply_coupon_nonce,
			coupon_code:		$form.find('input[name=coupon_code]').val()
		};

		$.ajax({
			type: 		'POST',
			url: 		woocommerce_params.ajax_url,
			data: 		data,
			success: 	function( code ) {
				$('.woocommerce-error, .woocommerce-message').remove();
				$form.removeClass('processing').unblock();

				if ( code ) {
					$form.before( code );
					$form.slideUp();

					$('body').trigger('update_checkout');
				}
			},
			dataType: 	"html"
		});
		return false;
	});

	/* Localisation */
	var locale_json = woocommerce_params.locale.replace(/&quot;/g, '"');
	var locale = $.parseJSON( locale_json );
	var required = ' <abbr class="required" title="' + woocommerce_params.i18n_required_text + '">*</abbr>';

	$('body')

	// Handle locale
	.bind('country_to_state_changing', function( event, country, wrapper ){

		var thisform = wrapper;

		if ( locale[country] ) {
			var thislocale = locale[country];
		} else {
			var thislocale = locale['default'];
		}

		// Handle locale fields
		var locale_fields = {
			'address_1'	: 	'#billing_address_1_field, #shipping_address_1_field',
			'address_2'	: 	'#billing_address_2_field, #shipping_address_2_field',
			'state'		: 	'#billing_state_field, #shipping_state_field',
			'postcode'	:	'#billing_postcode_field, #shipping_postcode_field',
			'city'		: 	'#billing_city_field, #shipping_city_field'
		};

		$.each( locale_fields, function( key, value ) {

			var field = thisform.find( value );

			if ( thislocale[key] ) {

				if ( thislocale[key]['label'] ) {
					field.find('label').html( thislocale[key]['label'] );
				}

				if ( thislocale[key]['placeholder'] ) {
					field.find('input').attr( 'placeholder', thislocale[key]['placeholder'] );
				}

				field.find('label abbr').remove();

				if ( typeof thislocale[key]['required'] == 'undefined' && locale['default'][key]['required'] == true ) {
					field.find('label').append( required );
				} else if ( thislocale[key]['required'] == true ) {
					field.find('label').append( required );
				}

				if ( key !== 'state' ) {
					if ( thislocale[key]['hidden'] == true ) {
						field.hide().find('input').val('');
					} else {
						field.show();
					}
				}

			} else if ( locale['default'][key] ) {
				if ( locale['default'][key]['required'] == true ) {
					if (field.find('label abbr').size()==0) field.find('label').append( required );
				}
				if ( key !== 'state' && (typeof locale['default'][key]['hidden'] == 'undefined' || locale['default'][key]['hidden'] == false) ) {
					field.show();
				}
			}

		});

		var $postcodefield = thisform.find('#billing_postcode_field, #shipping_postcode_field');
		var $cityfield     = thisform.find('#billing_city_field, #shipping_city_field');
		var $statefield    = thisform.find('#billing_state_field, #shipping_state_field');

		if ( ! $postcodefield.attr('data-o_class') ) {
			$postcodefield.attr('data-o_class', $postcodefield.attr('class'));
			$cityfield.attr('data-o_class', $cityfield.attr('class'));
			$statefield.attr('data-o_class', $statefield.attr('class'));
		}

		// Re-order postcode/city
		if ( thislocale['postcode_before_city'] ) {

			$postcodefield.add( $cityfield ).add( $statefield ).removeClass('form-row-first form-row-last').addClass('form-row-wide');
			$postcodefield.insertBefore( $cityfield );

		} else {
			// Default
			$postcodefield.attr('class', $postcodefield.attr('data-o_class'));
			$cityfield.attr('class', $cityfield.attr('data-o_class'));
			$statefield.attr('class', $statefield.attr('data-o_class'));
			$postcodefield.insertAfter( $statefield );
		}

	})

	// Init trigger
	.bind('init_checkout', function() {
		$('#billing_country, #shipping_country, .country_to_state').change();
		$('body').trigger('update_checkout');
	});

	// Update on page load
	if ( woocommerce_params.is_checkout == 1 )
		$('body').trigger('init_checkout');

});