<?php

/* THEME SETUP
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_setup' ) ) {
	function mcluhan_setup() {

		// Automatic feed
		add_theme_support( 'automatic-feed-links' );

		// Set content-width
		global $content_width;
		if ( ! isset( $content_width ) ) {
			$content_width = 560;
		}

		// Post thumbnail support
		add_theme_support( 'post-thumbnails' );

		// Post thumbnail size
		set_post_thumbnail_size( 1200, 9999 );

		// Custom image sizes
		add_image_size( 'mcluhan_preview-image', 600, 9999 );

		// Background color
		add_theme_support( 'custom-background', array(
			'default-color' => 'ffffff',
		) );

		// Title tag support
		add_theme_support( 'title-tag' );

		// Add nav menu
		register_nav_menu( 'main-menu', __( 'Main menu', 'mcluhan' ) );
		register_nav_menu( 'social-menu', __( 'Social links', 'mcluhan' ) );

		// Add excerpts to pages
		add_post_type_support( 'page', array( 'excerpt' ) );

		// HTML5 semantic markup
		add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list', 'gallery', 'caption' ) );

		// Make the theme translation ready
		load_theme_textdomain( 'mcluhan', get_template_directory() . '/languages' );

	}
} // End if().
add_action( 'after_setup_theme', 'mcluhan_setup' );


/* IN SEARCH, LIST RESULTS BY DATE
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_sort_search_posts_by_date' ) ) {
	function mcluhan_sort_search_posts_by_date( $query ) {
		if ( ! is_admin() && $query->is_main_query() && $query->is_search() ) {
			$query->set( 'orderby', 'date' );
		}
	}
}
add_action( 'pre_get_posts', 'mcluhan_sort_search_posts_by_date' );


/* ENQUEUE STYLES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_load_style' ) ) {
	function mcluhan_load_style() {
		if ( ! is_admin() ) {
			wp_register_style( 'mcluhan-fonts', 'https://fonts.googleapis.com/css?family=Archivo:400,400i,600,600i,700,700i&amp;subset=latin-ext', array(), null );
			wp_register_style( 'fontawesome', get_template_directory_uri() . '/assets/css/font-awesome.css', null );

			wp_enqueue_style( 'mcluhan-style', get_template_directory_uri() . '/style.css', array( 'fontawesome', 'mcluhan-fonts' ) );
		}
	}
}
add_action( 'wp_enqueue_scripts', 'mcluhan_load_style' );


/* ADD EDITOR STYLES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_add_editor_styles' ) ) {
	function mcluhan_add_editor_styles() {
		add_editor_style( array(
			'mcluhan-editor-styles.css',
			'https://fonts.googleapis.com/css?family=Archivo:400,400i,600,700,700i&amp;subset=latin-ext',
		) );
	}
}
add_action( 'init', 'mcluhan_add_editor_styles' );


/* DEACTIVATE DEFAULT WP GALLERY STYLES
------------------------------------------------ */

add_filter( 'use_default_gallery_style', '__return_false' );


/* ENQUEUE SCRIPTS
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_enqueue_scripts' ) ) {
	function mcluhan_enqueue_scripts() {
		wp_enqueue_script( 'mcluhan_global', get_template_directory_uri() . '/assets/js/global.js', array( 'jquery', 'imagesloaded', 'masonry' ), '', true );

		global $wp_query;

		// AJAX PAGINATION
		wp_localize_script( 'mcluhan_global', 'mcluhan_ajaxpagination', array(
			'ajaxurl'		=> admin_url( 'admin-ajax.php' ),
			'query_vars'	=> wp_json_encode( $wp_query->query ),
		) );
	}
}
add_action( 'wp_enqueue_scripts', 'mcluhan_enqueue_scripts' );


/* POST CLASSES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_post_classes' ) ) {
	function mcluhan_post_classes( $classes ) {

		// Class indicating presence/lack of post thumbnail
		$classes[] = ( has_post_thumbnail() ? 'has-thumbnail' : 'missing-thumbnail' );

		return $classes;
	}
}
add_action( 'post_class', 'mcluhan_post_classes' );


/* BODY CLASSES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_body_classes' ) ) {
	function mcluhan_body_classes( $classes ) {

		// Check whether we're in the customizer preview
		if ( is_customize_preview() ) {
			$classes[] = 'customizer-preview';
		}

		// Hide social buttons
		if ( get_theme_mod( 'mcluhan_hide_social' ) ) {
			$classes[] = 'hide-social';
		}

		// White bg class
		if ( get_theme_mod( 'mcluhan_accent_color' ) == '#ffffff' && ( ! get_background_color() || get_background_color() == 'ffffff' ) ) {
			$classes[] = 'white-bg';
		}

		// Check whether the custom backgrounds are both set to the same thing
		if ( get_theme_mod( 'mcluhan_accent_color' ) && get_background_color() && ltrim( get_theme_mod( 'mcluhan_accent_color' ), '#' ) == get_background_color() ) {
			$classes[] = 'same-custom-bgs';
		}

		// Dark sidebar text
		if ( get_theme_mod( 'mcluhan_dark_sidebar_text' ) ) {
			$classes[] = 'dark';
		}

		// Add short class for resume page template
		if ( is_page_template( 'resume-page-template.php' ) ) {
			$classes[] = 'resume-template';
		}

		// Add short class for full width page template
		if ( is_page_template( 'full-width-page-template.php' ) ) {
			$classes[] = 'full-width-template';
		}

		return $classes;
	}
} // End if().
add_action( 'body_class', 'mcluhan_body_classes' );


/* MODIFY HTML CLASS TO INDICATE JS
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_has_js' ) ) {
	function mcluhan_has_js() {
		?>
		<script>jQuery( 'html' ).removeClass( 'no-js' ).addClass( 'js' );</script>
		<?php
	}
}
add_action( 'wp_head', 'mcluhan_has_js' );


/* ENQUEUE COMMENT-REPLY.JS
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_load_scripts' ) ) {
	function mcluhan_load_scripts() {
		if ( ( ! is_admin() ) && is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
			wp_enqueue_script( 'comment-reply' );
		}
	}
}
add_action( 'wp_enqueue_scripts', 'mcluhan_load_scripts' );


/* GET AND OUTPUT ARCHIVE TYPE
------------------------------------------------ */

/* GET THE TYPE */

if ( ! function_exists( 'mcluhan_get_archive_type' ) ) {
	function mcluhan_get_archive_type() {
		if ( is_category() ) {
			$type = __( 'Category', 'mcluhan' );
		} elseif ( is_tag() ) {
			$type = __( 'Tag', 'mcluhan' );
		} elseif ( is_author() ) {
			$type = __( 'Author', 'mcluhan' );
		} elseif ( is_year() ) {
			$type = __( 'Year', 'mcluhan' );
		} elseif ( is_month() ) {
			$type = __( 'Month', 'mcluhan' );
		} elseif ( is_day() ) {
			$type = __( 'Date', 'mcluhan' );
		} elseif ( is_post_type_archive() ) {
			$type = __( 'Post Type', 'mcluhan' );
		} elseif ( is_tax() ) {
			$term = get_queried_object();
			$taxonomy = $term->taxonomy;
			$taxonomy_labels = get_taxonomy_labels( get_taxonomy( $taxonomy ) );
			$type = $taxonomy_labels->name;
		} else {
			$type = __( 'Archives', 'mcluhan' );
		}

		return $type;
	}
}

/* OUTPUT THE TYPE */

if ( ! function_exists( 'mcluhan_the_archive_type' ) ) {
	function mcluhan_the_archive_type() {
		$type = mcluhan_get_archive_type();

		echo $type;
	}
}


/* ---------------------------------------------------------------------------------------------
   AJAX PAGINATION
   This function is called to load the next set of posts
   --------------------------------------------------------------------------------------------- */


if ( ! function_exists( 'mcluhan_ajax_results' ) ) {
	function mcluhan_ajax_results() {

		$string = json_decode( stripslashes( $_POST['query_data'] ), true );

		if ( $string ) :

			$args = array(
				's'					=> $string,
				'posts_per_page'	=> 5,
				'post_status'		=> 'publish',
			);

			$ajax_query = new WP_Query( $args );

			if ( $ajax_query->have_posts() ) {

				?>

				<p class="results-title"><?php _e( 'Search Results', 'mcluhan' ); ?></p>

				<ul>

					<?php

					// Custom loop
					while ( $ajax_query->have_posts() ) :

						$ajax_query->the_post();

						// Load the appropriate content template
						get_template_part( 'content-mobile-search' );

					// End the loop
					endwhile;

					?>

				</ul>

				<?php if ( $ajax_query->max_num_pages > 1 ) : ?>

					<a class="show-all" href="<?php echo esc_url( home_url( '?s=' . $string ) ); ?>"><?php _e( 'Show all', 'mcluhan' ); ?></a>

				<?php endif; ?>

				<?php

			} else {

				echo '<p class="no-results-message">' . __( 'We could not find anything that matches your search query. Please try again.', 'mcluhan' ) . '</p>';

			} // End if().

		endif; // End if().

		die();
	}
} // End if().
add_action( 'wp_ajax_nopriv_ajax_pagination', 'mcluhan_ajax_results' );
add_action( 'wp_ajax_ajax_pagination', 'mcluhan_ajax_results' );


/* REMOVE PREFIX BEFORE ARCHIVE TITLES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_remove_archive_title_prefix' ) ) {
	function mcluhan_remove_archive_title_prefix( $title ) {
		if ( is_category() ) {
			$title = single_cat_title( '', false );
		} elseif ( is_tag() ) {
			$title = single_tag_title( '#', false );
		} elseif ( is_author() ) {
			$title = '<span class="vcard">' . get_the_author() . '</span>';
		} elseif ( is_year() ) {
			$title = get_the_date( 'Y' );
		} elseif ( is_month() ) {
			$title = get_the_date( 'F Y' );
		} elseif ( is_day() ) {
			$title = get_the_date( get_option( 'date_format' ) );
		} elseif ( is_tax( 'post_format' ) ) {
			if ( is_tax( 'post_format', 'post-format-aside' ) ) {
				$title = _x( 'Aside', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
				$title = _x( 'Galleries', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
				$title = _x( 'Images', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
				$title = _x( 'Videos', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
				$title = _x( 'Quotes', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
				$title = _x( 'Links', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
				$title = _x( 'Statuses', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
				$title = _x( 'Audio', 'post format archive title', 'mcluhan' );
			} elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
				$title = _x( 'Chats', 'post format archive title', 'mcluhan' );
			}
		} elseif ( is_post_type_archive() ) {
			$title = post_type_archive_title( '', false );
		} elseif ( is_tax() ) {
			$title = single_term_title( '', false );
		} else {
			$title = __( 'Archives', 'mcluhan' );
		} // End if().

		return $title;

	}
} // End if().
add_filter( 'get_the_archive_title', 'mcluhan_remove_archive_title_prefix' );


/* CUSTOM COMMENT OUTPUT
------------------------------------------------ */
if ( ! function_exists( 'mcluhan_comment' ) ) {

	function mcluhan_comment( $comment, $args, $depth ) {
		switch ( $comment->comment_type ) :
			case 'pingback' :
			case 'trackback' :
				global $post;
				?>

				<div <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
					<?php _e( 'Pingback:', 'mcluhan' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( 'Edit', 'mcluhan' ) ); ?>

				<?php

				break;

			default :
				global $post;
				?>
				<div <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">

					<div id="comment-<?php comment_ID(); ?>">

						<header class="comment-meta">

							<span class="comment-author">
								<cite>
									<?php echo get_comment_author_link(); ?>
								</cite>

								<?php
								if ( $comment->user_id === $post->post_author ) {
									echo '<span class="comment-by-post-author"> (' . __( 'Author', 'mcluhan' ) . ')</span>';
								}
								?>
							</span>

							<span class="comment-date">
								<a class="comment-date-link" href="<?php echo esc_url( get_comment_link( $comment->comment_ID ) ) ?>" title="<?php echo get_comment_date() . ' ' . __( 'at', 'mcluhan' ) . ' ' . get_comment_time(); ?>"><?php echo get_comment_date( get_option( 'date_format' ) ); ?></a>
							</span>

							<?php
							comment_reply_link( array(
								'after'			=> '</span>',
								'before'		=> '<span class="comment-reply">',
								'depth'			=> $depth,
								'max_depth' 	=> $args['max_depth'],
								'reply_text' 	=> __( 'Reply', 'mcluhan' ),
							) );
							?>

						</header>

						<div class="comment-content entry-content">

							<?php comment_text(); ?>

						</div><!-- .comment-content -->

						<div class="comment-actions">

							<?php if ( '0' == $comment->comment_approved ) : ?>

								<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'mcluhan' ); ?></p>

							<?php endif; ?>

						</div><!-- .comment-actions -->

					</div><!-- .comment -->

			<?php
			break;
		endswitch;

	}
} // End if().


/* ADMIN NOTICES
------------------------------------------------ */

if ( ! function_exists( 'mcluhan_admin_notices' ) ) {
	function mcluhan_admin_notices() {

		// Show notice about posts per page on theme activation, if the setting isn't set already
		if ( isset( $_GET['activated'] ) && true == $_GET['activated'] && 'mcluhan' == get_option( 'template' ) && get_option( 'posts_per_page' ) < 999 ) : ?>

			<div class="notice notice-info is-dismissible">
				<?php /* Translators: %1$1s = opening link to the demo site, %2$2s = closing link tag, %3$3s = link to the reading options, %4$4s = closing link tag */ ?>
				<p><?php printf( _x( 'To make McLuhan display like the %1$1sdemo site%2$2s, with all posts listed on archive pages, you need to change the "Blog pages show at most" setting in %3$3sSettings > Reading%4$4s to a value exceeding the number of posts on your site.', 'Translators: %1$1s = opening link to the demo site, %2$2s = closing link tag, %3$3s = link to the reading options, %4$4s = closing link tag', 'mcluhan' ), '<a href="http://www.andersnoren.se/themes/mcluhan/">', '</a>', '<a href="' . admin_url( 'options-reading.php' ) . '">', '</a>' ); ?></p>
			</div>

			<?php
		endif;

	}
} // End if().
add_action( 'mcluhan_admin_notices', 'showAdminMessages' );


/* CUSTOMIZER SETTINGS
------------------------------------------------ */

class McLuhan_Customize {

	public static function mcluhan_register( $wp_customize ) {

		// Add our Customizer section
		$wp_customize->add_section( 'mcluhan_options', array(
			'capability' 	=> 'edit_theme_options',
			'description' 	=> __( 'Customize the theme settings for McLuhan.', 'mcluhan' ),
			'title' 		=> __( 'Theme Options', 'mcluhan' ),
			'priority' 		=> 35,
		) );

		// Custom accent color
		$wp_customize->add_setting( 'mcluhan_accent_color', array(
			'default' 			=> '#121212',
			'transport' 		=> 'postMessage',
			'type' 				=> 'theme_mod',
			'sanitize_callback' => 'sanitize_hex_color',
		) );

		$wp_customize->add_control( new WP_Customize_Color_Control( $wp_customize, 'mcluhan_accent_color', array(
			'description' 	=> __( 'Set the background color used for the sidebar on desktop, and the header on tablet and mobile.', 'mcluhan' ),
			'label' 		=> __( 'Sidebar background', 'mcluhan' ),
			'section' 		=> 'colors',
			'settings' 		=> 'mcluhan_accent_color',
			'priority' 		=> 10,
		) ) );

		// Dark sidebar text
		$wp_customize->add_setting( 'mcluhan_dark_sidebar_text', array(
			'capability' 		=> 'edit_theme_options',
			'sanitize_callback' => 'mcluhan_sanitize_checkbox',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( 'mcluhan_dark_sidebar_text', array(
			'description' 	=> __( 'Check this if you have set a light background color for the sidebar/mobile header.', 'mcluhan' ),
			'label' 		=> __( 'Dark text in sidebar', 'mcluhan' ),
			'section' 		=> 'colors',
			'type' 			=> 'checkbox',
			'priority' 		=> 15,
		) );

		// Set the home page title
		$wp_customize->add_setting( 'mcluhan_home_title', array(
			'capability' 		=> 'edit_theme_options',
			'sanitize_callback' => 'sanitize_textarea_field',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( 'mcluhan_home_title', array(
			'description' 	=> __( 'The title you want shown on the page that displays your latest posts.', 'mcluhan' ),
			'label' 		=> __( 'Front Page Title', 'mcluhan' ),
			'type' 			=> 'textarea',
			'section' 		=> 'mcluhan_options',
		) );

		// Hide social
		$wp_customize->add_setting( 'mcluhan_hide_social', array(
			'capability' 		=> 'edit_theme_options',
			'sanitize_callback' => 'mcluhan_sanitize_checkbox',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( 'mcluhan_hide_social', array(
			'type' 			=> 'checkbox',
			'section' 		=> 'mcluhan_options',
			'label' 		=> __( 'Hide social buttons', 'mcluhan' ),
			'description' 	=> __( 'As default, the social section and a search toggle, even if a menu has not been set for the social section.', 'mcluhan' ),
		) );

		// Decide order of month + day in post previews
		$wp_customize->add_setting( 'mcluhan_preview_date_format', array(
			'capability' 		=> 'edit_theme_options',
			'default' 			=> 'month-day',
			'sanitize_callback' => 'mcluhan_sanitize_radio',
		) );

		$wp_customize->add_control( 'mcluhan_preview_date_format', array(
			'type' 			=> 'radio',
			'section' 		=> 'mcluhan_options',
			'label' 		=> __( 'Archive Date Format', 'mcluhan' ),
			'description' 	=> __( 'Choose whether post previews should display the date with month or day of month first.', 'mcluhan' ),
			'choices' 		=> array(
				'month-day' 	=> __( 'Month first (Jan 1)', 'mcluhan' ),
				'day-month' 	=> __( 'Day of month first (1 Jan)', 'mcluhan' ),
			),
		) );

		// Lowercase calendar month
		$wp_customize->add_setting( 'mcluhan_preview_date_lowercase', array(
			'capability' 		=> 'edit_theme_options',
			'sanitize_callback' => 'mcluhan_sanitize_checkbox',
			'transport'			=> 'postMessage',
		) );

		$wp_customize->add_control( 'mcluhan_preview_date_lowercase', array(
			'label' 		=> __( 'Show the month name in lowercase', 'mcluhan' ),
			'section' 		=> 'mcluhan_options',
			'type' 			=> 'checkbox',
			'priority' 		=> 15,
		) );

		// Make built-in controls use live JS preview
		$wp_customize->get_setting( 'blogname' )->transport = 'postMessage';
		$wp_customize->get_setting( 'background_color' )->transport = 'postMessage';

		// SANITATION

		// Sanitize boolean for checkbox
		function mcluhan_sanitize_checkbox( $checked ) {
			return ( ( isset( $checked ) && true == $checked ) ? true : false );
		}

		// Sanitize radio buttons
		function mcluhan_sanitize_radio( $input, $setting ) {

			// Ensure input is a slug.
			$input = sanitize_key( $input );

			// Get list of choices from the control associated with the setting.
			$choices = $setting->manager->get_control( $setting->id )->choices;

			// If the input is a valid key, return it; otherwise, return the default.
			return ( array_key_exists( $input, $choices ) ? $input : $setting->default );
		}

	}

	// Output custom CSS in the header
	public static function mcluhan_header_output() {
		?>

		<!-- Customizer CSS -->

		<style type="text/css">

			<?php

			self::mcluhan_generate_css( 'body .site-header', 'background-color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.social-menu.desktop', 'background-color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.social-menu a:hover', 'color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.social-menu a.active', 'color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.mobile-menu-wrapper', 'background-color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.social-menu.mobile', 'background-color', 'mcluhan_accent_color' );
			self::mcluhan_generate_css( '.mobile-search.active', 'background-color', 'mcluhan_accent_color' );

			?>

		</style>

		<!-- /Customizer CSS -->

		<?php
	}

	// Function for generating the custom CSS
	public static function mcluhan_generate_css( $selector, $style, $mod_name, $prefix = '', $postfix = '', $echo = true ) {

		$return = '';

		$mod = esc_attr( get_theme_mod( $mod_name ) );

		if ( ! empty( $mod ) ) {

			$return = sprintf( '%s { %s:%s; }', $selector, $style, $prefix . $mod . $postfix );

			if ( $echo ) {
				echo $return;
			}
		}

		return $return;

	}

	// Initiate the live preview JS
	public static function mcluhan_live_preview() {
		wp_enqueue_script( 'mcluhan-themecustomizer', get_template_directory_uri() . '/assets/js/theme-customizer.js', array( 'jquery', 'customize-preview' ), '', true );
	}

}

// Output custom CSS to live site
add_action( 'wp_head' , array( 'McLuhan_Customize', 'mcluhan_header_output' ) );

// Setup the Theme Customizer settings and controls
add_action( 'customize_register', array( 'McLuhan_Customize', 'mcluhan_register' ) );

// Enqueue live preview javascript in Theme Customizer admin screen
add_action( 'customize_preview_init', array( 'McLuhan_Customize', 'mcluhan_live_preview' ) );

?>