<?php

namespace TotalTheme;

use WP_Query;
use TotalTheme\Theme_Builder;
use TotalTheme\Header\Core as Header;
use TotalTheme\Helpers\Add_Template;

\defined( 'ABSPATH' ) || exit;

/**
 * Header Builder.
 *
 * @todo rename to Theme_Builder\Header_Template
 */
class HeaderBuilder {

	/**
	 * Hook to insert the header into.
	 */
	protected $insert_hook = 'wpex_hook_header_inner';

	/**
	 * Hook priority.
	 */
	protected $insert_priority = 0;

	/**
	 * Start things up.
	 */
	public function __construct() {
		$this->init_hooks();
	}

	/**
	 * Hook into actions and filters.
	 */
	public function init_hooks() {
		$is_admin = \wpex_is_request( 'admin' );

		if ( $is_admin ) {
			\add_action( 'admin_menu', array( $this, 'add_admin_submenu_page' ), 20 );
			\add_action( 'admin_init', array( $this, 'register_page_options' ) );
			if ( \current_user_can( 'edit_posts' ) ) {
				\add_action( 'wp_ajax_wpex_header_builder_edit_links', array( $this, 'ajax_edit_links' ) );
			}
		}

		// Run actions and filters if header_builder ID is defined
		if ( self::get_template_id() || ! empty( $_GET[ 'wpex_inline_header_template_editor' ] ) ) {

			if ( \wpex_is_request( 'frontend' ) ) {
				\add_action( 'wp', array( $this, 'alter_header' ) );
				\add_filter( 'wpex_vc_css_ids', array( $this, 'wpex_vc_css_ids' ) );
			}

			if ( wpex_vc_is_inline() ) {
				\add_filter( 'template_include', array( $this, 'builder_template' ), 9999 );
			}

			\add_filter( 'wpex_customizer_sections', array( $this, 'remove_customizer_settings' ) );
			\add_filter( 'wpex_typography_settings', array( $this, 'remove_typography_settings' ) );

			if ( $is_admin) {
				\add_filter( 'wpex_metabox_array', array( $this, 'remove_meta' ), 99, 2 );
			}

			\add_filter( 'wpex_head_css', array( $this, 'custom_css' ), 99 );
		}

	}

	/**
	 * Returns header template ID.
	 */
	public static function get_template_id() {
		$id = \get_theme_mod( 'header_builder_page_id' );

		/**
		 * Filters the header template ID.
		 *
		 * @param int $id
		 */
		$id = (int) \apply_filters( 'wpex_header_builder_page_id', $id );

		if ( ! empty( $id ) && \is_numeric( $id ) ) {
			$id = \wpex_parse_obj_id( $id, 'page' ) ?: $id;
			if ( 'publish' === \get_post_status( $id ) ) {
				return $id;
			}
		}
	}

	/**
	 * Add sub menu page.
	 */
	public function add_admin_submenu_page() {
		$hook_suffix = \add_submenu_page(
			\WPEX_THEME_PANEL_SLUG,
			\esc_html__( 'Header Builder', 'total' ),
			\esc_html__( 'Header Builder', 'total' ),
			'edit_theme_options',
			\WPEX_THEME_PANEL_SLUG .'-header-builder',
			[ $this, 'render_admin_page' ]
		);

		\add_action( "load-{$hook_suffix}", [ $this, 'admin_help_tab' ] );
	}

	/**
	 * Add admin help tab.
	 */
	public function admin_help_tab() {
		$screen = \get_current_screen();

		if ( ! $screen ) {
			return;
		}

		$allowed_html = [
			'a' => [
				'href' => [],
			],
		];

		$screen->add_help_tab(
			[
				'id'      => 'totaltheme_header_builder',
				'title'   => \esc_html__( 'Overview', 'total' ),
				'content' => '<p>' . \wp_kses( sprintf( __( 'Use this setting to replace the default theme header with content created with WPBakery or other page builder. When enabled all Customizer settings for the Header will be removed. This is an advanced functionality so if this is the first time you use the theme we recommend you first test out the built-in header which can be customized at <a href="%s">Appearance > Customize > Header</a>.', 'total' ), \esc_url( \admin_url( '/customize.php?autofocus[panel]=wpex_header' ) ) ), $allowed_html ) . '</p>'
			]
		);
	}

	/**
	 * Returns settings array.
	 */
	public function settings() {
		return [
			'page_id'      => \esc_html__( 'Header Template', 'total' ),
			'bg'           => \esc_html__( 'Background Color', 'total' ),
			'bg_img'       => \esc_html__( 'Background Image', 'total' ),
			'bg_img_style' => \esc_html__( 'Background Image Style', 'total' ),
			'top_bar'      => \esc_html__( 'Top Bar', 'total' ),
			'sticky'       => \esc_html__( 'Sticky Header', 'total' ),
		];
	}

	/**
	 * Function that will register admin page options.
	 */
	public function register_page_options() {

		\register_setting(
			'wpex_header_builder',
			'header_builder',
			[
				'sanitize_callback' => [ $this, 'save_options' ],
				'default' => null,
			]
		);

		\add_settings_section(
			'wpex_header_builder_main',
			false,
			[ $this, 'section_main_callback' ],
			'wpex-header-builder-admin'
		);

		$settings = $this->settings();
		foreach ( $settings as $key => $val ) {
			\add_settings_field(
				$key,
				$val,
				[ $this, "{$key}_field_callback" ],
				'wpex-header-builder-admin',
				'wpex_header_builder_main',
				[
					'label_for' => 'wpex-header-builder-field--' . \sanitize_html_class( $key ),
				]
			);
		}

	}

	/**
	 * Save options.
	 */
	public function save_options( $options ) {
		$settings = $this->settings();

		foreach ( $settings as $key => $val ) {
			switch ( $key ) {
				case 'top_bar':
					if ( empty( $options['top_bar'] ) ) {
						\set_theme_mod( 'top_bar', false );
					} else {
						\remove_theme_mod( 'top_bar' );
					}
					break;
				case 'sticky':
					if ( ! empty( $options['header_builder_sticky'] ) ) {
						\set_theme_mod( 'header_builder_sticky', true );
					} else {
						\remove_theme_mod( 'header_builder_sticky' );
					}
					break;
				default:
					if ( empty( $options[$key] ) ) {
						\remove_theme_mod( 'header_builder_' . $key );
					} else {
						\set_theme_mod( 'header_builder_' . $key, wp_strip_all_tags( $options[$key] ) );
					}
					break;
			}
		}
	}

	/**
	 * Main Settings section callback.
	 */
	public function section_main_callback( $options ) {
		// not needed
	}

	/**
	 * Fields callback functions.
	 */

	// Header Builder Page ID
	public function page_id_field_callback() {
		$selected_template = \get_theme_mod( 'header_builder_page_id' );
		$template_exists   = ( $selected_template && \get_post_status( $selected_template ) );

		Theme_Builder::instance()->template_select( [
			'id'            => 'wpex-header-builder-field--page_id',
			'name'          => 'header_builder[page_id]',
			'selected'      => $selected_template,
			'template_type' => 'header',
		] );

		?>

		<br><br>

		<?php Add_Template::render_form( 'header', $template_exists ); ?>

		<span class="wpex-edit-template-links-spinner hidden"><?php \wpex_svg( 'loaders/wordpress', 20 ); ?></span>

		<div class="wpex-edit-template-links-ajax totaltheme-admin-button-group<?php echo ( ! $template_exists ) ? ' hidden' : ''; ?>" data-nonce="<?php echo \wp_create_nonce( 'wpex_header_builder_edit_links_nonce' ); ?>" data-action="wpex_header_builder_edit_links" data-hide-rows="true"><?php $this->edit_links( $selected_template ); ?></div>

	<?php }

	// Background Setting
	public function bg_field_callback() { ?>

		<input id="wpex-header-builder-field--bg" type="text" name="header_builder[bg]" value="<?php echo \esc_attr( \get_theme_mod( 'header_builder_bg' ) ); ?>" class="wpex-color-field">

	<?php }

	// Background Image Setting
	public function bg_img_field_callback() {

		$bg = \get_theme_mod( 'header_builder_bg_img' );

		?>

		<div class="uploader">
			<input id="wpex-header-builder-field--bg_img" class="wpex-media-input" type="text" name="header_builder[bg_img]" value="<?php echo \esc_attr( $bg ); ?>">
			<button class="wpex-media-upload-button button-primary"><?php \esc_attr_e( 'Select', 'total' ); ?></button>
			<button class="wpex-media-remove button-secondary"><?php \esc_html_e( 'Remove', 'total' ); ?></button>
			<div class="wpex-media-live-preview">
				<?php if ( $preview = \wpex_get_image_url( $bg ) ) { ?>
					<img src="<?php echo \esc_url( $preview ); ?>" alt="<?php \esc_html_e( 'Preview Image', 'total' ); ?>">
				<?php } ?>
			</div>
		</div>

	<?php }

	// Background Image Style Setting
	public function bg_img_style_field_callback() {

		$style = \get_theme_mod( 'header_builder_bg_img_style' );

		?>

			<select id="wpex-header-builder-field--bg_img_style" name="header_builder[bg_img_style]">
			<?php
			$bg_styles = \wpex_get_bg_img_styles();
			foreach ( $bg_styles as $key => $val ) { ?>
				<option value="<?php echo \esc_attr( $key ); ?>" <?php \selected( $style, $key, true ); ?>>
					<?php echo \strip_tags( $val ); ?>
				</option>
			<?php } ?>
		</select>

	<?php }

	// Top bar setting callback
	public function top_bar_field_callback() {
		$val = \get_theme_mod( 'top_bar', true ) ? 'on' : false;

		?>

		<input type="checkbox" name="header_builder[top_bar]" id="wpex-header-builder-field--top_bar" <?php \checked( $val, 'on' ); ?>>
	<?php }

	// Sticky setting callback
	public function sticky_field_callback() {
		$val = \get_theme_mod( 'header_builder_sticky', false ) ? 'on' : false;

		?>

		<input type="checkbox" name="header_builder[header_builder_sticky]" id="wpex-header-builder-field--sticky" <?php \checked( $val, 'on' ); ?>>
	<?php }

	/**
	 * Settings page output.
	 */
	public function render_admin_page() {
		if ( ! current_user_can( 'edit_theme_options' ) ) {
			return;
		}

		\wp_enqueue_media();

		\wp_enqueue_style( 'wp-color-picker' );
		\wp_enqueue_script( 'wp-color-picker' );

		\wp_enqueue_style( 'totaltheme-admin-pages' );
		\wp_enqueue_script( 'totaltheme-admin-pages' );

		?>

		<div id="wpex-admin-page" class="wrap totaltheme-admin-wrap">

			<?php
			// Warning if builder page has been deleted
			$page_id = \get_theme_mod( 'header_builder_page_id' );
			if ( $page_id && FALSE === \get_post_status( $page_id ) ) {
				echo '<div class="notice notice-warning"><p>' . \esc_html__( 'It appears the page you had selected has been deleted, please re-save your settings to prevent issues.', 'total' ) . '</p></div>';
			} ?>

			<form method="post" action="options.php">
				<?php \settings_fields( 'wpex_header_builder' ); ?>
				<?php \do_settings_sections( 'wpex-header-builder-admin' ); ?>
				<?php \submit_button(); ?>
			</form>

		</div>
	<?php }

	/**
	 * Remove the header and add custom header if enabled.
	 */
	public function alter_header() {
		$hooks = \wpex_theme_hooks();

		if ( isset( $hooks['header']['hooks'] ) ) {
			foreach ( $hooks['header']['hooks'] as $hook ) {
				if ( 'wpex_hook_header_before' == $hook || 'wpex_hook_header_after' == $hook ) {
					continue;
				}
				\remove_all_actions( $hook, false );
			}
		}

		$this->insert_hook     = \apply_filters( 'wpex_header_builder_insert_hook', $this->insert_hook );
		$this->insert_priority = \apply_filters( 'wpex_header_builder_insert_priority', $this->insert_priority );

		\add_action( $this->insert_hook, [ $this, 'get_part' ], $this->insert_priority );

	}

	/**
	 * Alters get template.
	 */
	public function builder_template( $template ) {
		if ( empty( $_GET[ 'wpex_inline_header_template_editor' ] ) ) {
			return $template;
		}
		$redirect = false;
		$current_post = \absint( wpex_get_current_post_id() );
		$template_type = \get_post_type( $current_post );
		if ( \absint( $_GET[ 'wpex_inline_header_template_editor' ] ) === $current_post
			&& in_array( $template_type, [ 'templatera', 'wpex_templates' ] )
		) {
			$redirect = true;
		} elseif ( $current_post === self::get_template_id() ) {
			$redirect = true;
		}
		if ( $redirect ) {
			$new_template = \locate_template( "single-{$template_type}.php" );
			if ( $new_template ) {
				return $new_template;
			}
		}
		return $template;
	}

	/**
	 * Add header builder to array of ID's with CSS to load site-wide.
	 */
	public function wpex_vc_css_ids( $ids ) {
		if ( $header_builder_id = self::get_template_id() ) {
			$ids[] = $header_builder_id;
		}
		return $ids;
	}

	/**
	 * Remove header customizer sections to hide the settings from the Customizer but also
	 * prevents any inline_css from being added to the site.
	 */
	public function remove_customizer_settings( $sections ) {
		unset( $sections['wpex_header_general'] );
		unset( $sections['wpex_header_logo'] );
		unset( $sections['wpex_header_logo_icon'] );
		unset( $sections['wpex_header_fixed'] );
		unset( $sections['wpex_header_menu'] );
		unset( $sections['wpex_menu_search'] );
		unset( $sections['wpex_fixed_menu'] );
		unset( $sections['wpex_header_mobile_menu'] );
		unset( $sections['wpex_header_overlay']['settings']['overlay_header_style'] );
		return $sections;
	}

	/**
	 * Remove typography settings.
	 */
	public function remove_typography_settings( $settings ) {
		unset( $settings['logo'] );
		unset( $settings['header_aside'] );
		unset( $settings['menu'] );
		unset( $settings['menu_dropdown'] );
		unset( $settings['mobile_menu'] );
		return $settings;
	}

	/**
	 * Gets the header builder template part if the header is enabled.
	 */
	public function get_part() {
		if ( Header::is_enabled() || \wpex_vc_is_inline() ) {
			\get_template_part( 'partials/header/header-builder' );
		}
	}

	/**
	 * Remove header meta that isn't needed anymore.
	 *
	 * @todo use conditional callback functions in meta - itself instead of removing we never add.
	 */
	public function remove_meta( $array, $post ) {
		if ( $post && $post->ID === self::get_template_id() ) {
			$array = ''; // remove completely on actual builder page.
		} else {
			unset( $array['header']['settings']['custom_menu'] );
			unset( $array['header']['settings']['overlay_header_style'] );
			unset( $array['header']['settings']['overlay_header_dropdown_style'] );
			unset( $array['header']['settings']['overlay_header_font_size'] );
			unset( $array['header']['settings']['overlay_header_logo'] );
			unset( $array['header']['settings']['overlay_header_logo_retina'] );
			unset( $array['header']['settings']['overlay_header_retina_logo_height'] );
		}
		return $array;
	}

	/**
	 * Custom CSS for header builder.
	 */
	public function custom_css( $css ) {
		$header_css = '';
		if ( $bg = \get_theme_mod( 'header_builder_bg' ) ) {
			$header_css .= 'background-color:' . \esc_attr( $bg ) . ';';
			$css .= '#site-header-sticky-wrapper.is-sticky #site-header{background-color:' . \esc_url( $bg ) . ';}';
		}
		if ( $bg_img = \wpex_get_image_url( \get_theme_mod( 'header_builder_bg_img' ) ) ) {
			$header_css .= 'background-image:url(' . \esc_url( $bg_img ) . ');';
		}
		if ( $bg_img && $bg_img_style = \wpex_sanitize_data( \get_theme_mod( 'header_builder_bg_img_style' ), 'background_style_css' ) ) {
			$header_css .= $bg_img_style;
		}
		if ( $header_css ) {
			$css .= "/*HEADER BUILDER*/#site-header.header-builder{{$header_css}}";
		}
		return $css;
	}

	/**
	 * Get edit links.
	 */
	public function edit_links( $template_id = '' ) {
		if ( ! $template_id ) {
			return;
		}

		$template_type = \get_post_type( $template_id );

		?>

		<a href="<?php echo \esc_url( \admin_url( 'post.php?post=' . \intval( $template_id ) . '&action=edit' ) ); ?>" target="_blank" rel="noopener noreferrer" class="button"><?php echo \esc_html__( 'Backend Edit', 'total' ); ?> &#8599;</a>

		<?php if ( \WPEX_VC_ACTIVE && \in_array( $template_type, [ 'templatera', 'wpex_templates' ] ) ) { ?>

			<a href="<?php echo \esc_url( \admin_url( 'post.php?vc_action=vc_inline&post_id=' . \absint( $template_id ) . '&post_type=' . \get_post_type( $template_id ) . '&wpex_inline_header_template_editor=' . \absint( $template_id ) ) ); ?>" target="_blank" rel="noopener noreferrer" class="button"><?php \esc_html_e( 'Frontend Edit', 'total' ); ?> &#8599;</a>

		<?php } ?>

	<?php }

	/**
	 * Return correct edit links.
	 */
	public function ajax_edit_links() {
		if ( empty( $_POST['template_id'] ) || ! \wp_verify_nonce( $_POST['nonce'], 'wpex_header_builder_edit_links_nonce' ) ) {
			\wp_die();
		}

		$this->edit_links( \absint( $_POST['template_id'] ) );

		\wp_die();
	}

}

new HeaderBuilder();