/* global wp, jQuery */
/**
 * File customizer.js.
 *
 * Theme Customizer enhancements for a better user experience.
 *
 * Contains handlers to make Theme Customizer preview reload changes asynchronously.
 */

( function( $ ) {
	// Site title and description.
	wp.customize( 'blogname', function( value ) {
		value.bind( function( to ) {
			$( '.site-title a' ).text( to );
		} );
	} );
	wp.customize( 'blogdescription', function( value ) {
		value.bind( function( to ) {
			$( '.site-description' ).text( to );
		} );
	} );

	// Header text color.
	wp.customize( 'header_textcolor', function( value ) {
		value.bind( function( to ) {
			if ( 'blank' === to ) {
				$( '.site-title, .site-description' ).css( {
					clip: 'rect(1px, 1px, 1px, 1px)',
					position: 'absolute',
				} );
			} else {
				$( '.site-title, .site-description' ).css( {
					clip: 'auto',
					position: 'relative',
				} );
				$( '.site-title a, .site-description' ).css( {
					color: to,
				} );
			}
		} );
	} );

	const blog_articles_section_lists = ['banner', 'posts-grid'];
	blog_articles_section_lists.forEach(blog_articles_homepage_scroll_preview);

	function blog_articles_homepage_scroll_preview(item, index) {
        // Collect information from customize-controls.js about which panels are opening.
		wp.customize.bind('preview-ready', function() {

            // Initially hide the theme option placeholders on load.
			$('.panel-placeholder').hide();
			item = item.replace(/-/g, '_');
			wp.customize.preview.bind(item, function(data) {
                // Only on the front page.
				if (!$('body').hasClass('home')) {
					return;
				}

                // When the section is expanded, show and scroll to the content placeholders, exposing the edit links.
				if (true === data.expanded) {
					$('html, body').animate({
						'scrollTop': $('#blog_articles_' + item + '_section').position().top
					});
				}
			});

		});
	}

}( jQuery ) );