/*global wc_address_i18n_params */
jQuery( function( $ ) {

	// wc_address_i18n_params is required to continue, ensure the object exists
	if ( typeof wc_address_i18n_params === 'undefined' ) {
		return false;
	}

	var locale_json = wc_address_i18n_params.locale.replace( /"/g, '"' ), locale = $.parseJSON( locale_json );

	function field_is_required( field, is_required ) {
		if ( is_required ) {
			field.find( 'label .optional' ).remove();
			field.addClass( 'validate-required' );

			if ( field.find( 'label .required' ).length === 0 ) {
				field.find( 'label' ).append( '&nbsp;<abbr class="required" title="' + wc_address_i18n_params.i18n_required_text + '">*</abbr>' );
			}
		} else {
			field.find( 'label .required' ).remove();
			field.removeClass( 'validate-required' );

			if ( field.find( 'label .optional' ).length === 0 ) {
				field.find( 'label' ).append( '&nbsp;<span class="optional">(' + wc_address_i18n_params.i18n_optional_text + ')</span>' );
			}
		}
	}

	// Handle locale
	$( document.body ).bind( 'country_to_state_changing', function( event, country, wrapper ) {
		var thisform = wrapper, thislocale;

		if ( typeof locale[ country ] !== 'undefined' ) {
			thislocale = locale[ country ];
		} else {
			thislocale = locale['default'];
		}

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

		var locale_fields = $.parseJSON( wc_address_i18n_params.locale_fields );

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

			var field       = thisform.find( value ),
				fieldLocale = $.extend( true, {}, locale['default'][ key ], thislocale[ key ] );

			// Labels.
			if ( typeof fieldLocale.label !== 'undefined' ) {
				field.find( 'label' ).html( fieldLocale.label );
			}

			// Placeholders.
			if ( typeof fieldLocale.placeholder !== 'undefined' ) {
				field.find( 'input' ).attr( 'placeholder', fieldLocale.placeholder );
				field.find( '.select2-selection__placeholder' ).text( fieldLocale.placeholder );
			}

			// Use the i18n label as a placeholder if there is no label element and no i18n placeholder.
			if ( typeof fieldLocale.placeholder === 'undefined' && typeof fieldLocale.label !== 'undefined' && ! field.find( 'label' ).length ) {
				field.find( 'input' ).attr( 'placeholder', fieldLocale.label );
				field.find( '.select2-selection__placeholder' ).text( fieldLocale.label );
			}

			// Required.
			if ( typeof fieldLocale.required !== 'undefined' ) {
				field_is_required( field, fieldLocale.required );
			} else {
				field_is_required( field, false );
			}

			// Priority.
			if ( typeof fieldLocale.priority !== 'undefined' ) {
				field.data( 'priority', fieldLocale.priority );
			}

			// Hidden fields.
			if ( 'state' !== key ) {
				if ( typeof fieldLocale.hidden !== 'undefined' && true === fieldLocale.hidden ) {
					field.hide().find( 'input' ).val( '' );
				} else {
					field.show();
				}
			}
		});

		var fieldsets = $('.woocommerce-billing-fields__field-wrapper, .woocommerce-shipping-fields__field-wrapper, .woocommerce-address-fields__field-wrapper, .woocommerce-additional-fields__field-wrapper .woocommerce-account-fields');

		fieldsets.each( function( index, fieldset ) {
			var rows    = $( fieldset ).find( '.form-row' );
			var wrapper = rows.first().parent();

			// Before sorting, ensure all fields have a priority for bW compatibility.
			var last_priority = 0;

			rows.each( function() {
				if ( ! $( this ).data( 'priority' ) ) {
						$( this ).data( 'priority', last_priority + 1 );
				}
				last_priority = $( this ).data( 'priority' );
			} );

			// Sort the fields.
			rows.sort( function( a, b ) {
				var asort = $( a ).data( 'priority' ),
					bsort = $( b ).data( 'priority' );

				if ( asort > bsort ) {
					return 1;
				}
				if ( asort < bsort ) {
					return -1;
				}
				return 0;
			});

			rows.detach().appendTo( wrapper );
		} );
	});
});