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

	$( document.body )

		// Handle locale
		.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 );

				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( '.select2-selection__placeholder' ).text( thislocale[ key ].placeholder );

					// Use the i18n label as a placeholder if there is no label element or i18n placeholder.
					} else if ( thislocale[ key ].label && ! field.find( 'label' ).length ) {
						field.find( 'input' ).attr( 'placeholder', thislocale[ key ].label );
						field.find( '.select2-selection__placeholder' ).text( thislocale[ key ].label );
					}

					field_is_required( field, false );

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

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

					if ( thislocale[ key ].priority ) {
						field.data( 'priority', thislocale[ key ].priority );
					} else if ( locale['default'][ key ].priority ) {
						field.data( 'priority', locale['default'][ key ].priority );
					}

				} else if ( locale['default'][ key ] ) {

					if ( 'state' !== key ) {
						if ( typeof locale['default'][ key ].hidden === 'undefined' || locale['default'][ key ].hidden === false ) {
							field.show();
						} else if ( locale['default'][ key ].hidden === true ) {
							field.hide().find( 'input' ).val( '' );
						}
					}

					if ( 'postcode' === key || 'city' === key || 'state' === key ) {
						if ( locale['default'][ key ].label ) {
							field.find( 'label' ).html( locale['default'][ key ].label );
						}

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

					if ( locale['default'][ key ].required === true ) {
						if ( field.find( 'label abbr' ).length === 0 ) {
							field_is_required( field, true );
						}
					}

					if ( locale['default'][ key ].priority ) {
						field.data( 'priority', locale['default'][ key ].priority );
					}
				}

			});

			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 );
			} );
		});
});