/*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 = JSON.parse( 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 woocommerce-invalid woocommerce-invalid-required-field' );

			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 )
		.on( '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, #calc_shipping_postcode_field' ),
				$cityfield     = thisform.find( '#billing_city_field, #shipping_city_field, #calc_shipping_city_field' ),
				$statefield    = thisform.find( '#billing_state_field, #shipping_state_field, #calc_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 = JSON.parse( 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( ':input' ).attr( 'data-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:not(.screen-reader-text)' ).length
				) {
					field.find( ':input' ).attr( 'placeholder', fieldLocale.label );
					field.find( ':input' ).attr( 'data-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();
					}
				}

				// Class changes.
				if ( Array.isArray( fieldLocale.class ) ) {
					field.removeClass( 'form-row-first form-row-last form-row-wide' );
					field.addClass( fieldLocale.class.join( ' ' ) );
				}
			});

			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 = parseInt( $( a ).data( 'priority' ), 10 ),
						bsort = parseInt( $( b ).data( 'priority' ), 10 );

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

				rows.detach().appendTo( wrapper );
			});
		})
		.trigger( 'wc_address_i18n_ready' );
});