<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class AIEO_DMM_Header_Actions extends AIEO_DMM_Module_Base {

	const OPTION_KEY = 'aieo_header_actions';

	
	const PREVIOUS_PART_KEY = 'aieo_header_layout_previous_part';

	
	const BUILDER_PART = 'header-builder';

	public function get_id()       { return 'header_actions'; }
	public function get_icon()     { return 'grip-vertical'; }
	public function get_label()    { return __( 'Header icons', 'ai-eshop-optimizer' ); }
	public function get_group()    { return 'visuals'; }
	public function get_priority() { return 10; } 

	public function register_hooks() {
		add_action( 'wp_ajax_aieo_dmm_header_actions_save', array( $this, 'ajax_save' ) );
		add_action( 'wp_ajax_aieo_dmm_header_layout_save', array( $this, 'ajax_layout_save' ) );
		add_action( 'wp_ajax_aieo_dmm_header_theme_actions_save', array( $this, 'ajax_theme_actions_save' ) );
		if ( is_admin() ) {
			add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_layout_assets' ) );
		}
	}

	

	
	public static function is_zero() {
		return 'rooster' === get_template() && class_exists( '\Rooster\Core\Setup' ) && function_exists( 'rooster_setting' );
	}

	
	private static function settings_loaded() {
		if ( ! self::is_zero() ) {
			return false;
		}
		if ( ! class_exists( '\Rooster\Modules\Admin\Settings' ) && class_exists( '\Rooster\Core\Modules' ) ) {
			\Rooster\Core\Modules::load( 'admin/settings' );
		}
		return class_exists( '\Rooster\Modules\Admin\Settings' );
	}

	
	public static function theme_has_design( $key ) {
		return self::settings_loaded() && isset( \Rooster\Modules\Admin\Settings::fields()['design'][ (string) $key ] );
	}

	
	public static function layout_ready() {
		return class_exists( '\Rooster\Modules\Admin\HeaderLayoutField' ) && self::theme_has_design( 'header_layout' );
	}

	
	public static function builder_variant_exists() {
		return self::settings_loaded() && isset( \Rooster\Modules\Admin\Settings::part_options( 'header' )[ self::BUILDER_PART ] );
	}

	
	public static function previous_part() {
		$previous = (string) get_option( self::PREVIOUS_PART_KEY, '' );
		return self::BUILDER_PART === $previous ? '' : $previous;
	}

	
	public static function palette() {
		$out = array();
		if ( ! function_exists( 'wp_get_global_settings' ) ) {
			return $out;
		}
		$palette = wp_get_global_settings( array( 'color', 'palette' ) );
		foreach ( array( 'default', 'theme', 'custom' ) as $origin ) {
			foreach ( (array) ( $palette[ $origin ] ?? array() ) as $entry ) {
				$slug  = sanitize_key( (string) ( $entry['slug'] ?? '' ) );
				$color = strtolower( trim( (string) ( $entry['color'] ?? '' ) ) );
				if ( '' !== $slug && preg_match( '/^(#[0-9a-f]{3,8}|(rgb|rgba|hsl|hsla)\([0-9., %]+\))$/', $color ) ) {
					$out[ $slug ] = $color;
				}
			}
		}
		return $out;
	}

	
	public function enqueue_layout_assets( $hook ) {
		unset( $hook );
		
		$page = isset( $_GET['page'] ) ? sanitize_key( wp_unslash( (string) $_GET['page'] ) ) : '';
		
		$tab = isset( $_GET['dmm_tab'] ) ? sanitize_key( wp_unslash( (string) $_GET['dmm_tab'] ) ) : '';
		if ( 'ai-eshop-dmm' !== $page || 'header_actions' !== $tab || ! self::is_zero() ) {
			return;
		}
		$css = 'assets/css/aieo-header-layout-admin.css';
		$js  = 'assets/js/aieo-header-layout-admin.js';
		wp_enqueue_style( 'aieo-header-layout-admin', AIEO_URI . $css, array(), file_exists( AIEO_DIR . $css ) ? (string) filemtime( AIEO_DIR . $css ) : AIEO_VERSION );
		wp_enqueue_script( 'aieo-header-layout-admin', AIEO_URI . $js, array(), file_exists( AIEO_DIR . $js ) ? (string) filemtime( AIEO_DIR . $js ) : AIEO_VERSION, true );
		$palette = self::palette();
		$vars    = '';
		foreach ( array( 'bg', 'fg', 'muted', 'subtle', 'line', 'accent', 'accent-2', 'on-accent', 'contrast' ) as $slug ) {
			if ( isset( $palette[ $slug ] ) ) {
				$vars .= '--aieo-hl-' . $slug . ':' . $palette[ $slug ] . ';';
			}
		}
		if ( '' !== $vars ) {
			wp_add_inline_style( 'aieo-header-layout-admin', '.aieo-hl-preview{' . $vars . '}' );
		}
	}

	
	private static function apply_theme_settings( array $groups, $summary ) {
		if ( ! self::settings_loaded() || ! class_exists( '\Rooster\Modules\Abilities\Changes' ) ) {
			return new WP_Error( 'aieo_no_theme', __( 'Rooster Zero\'s settings are not available on this site.', 'ai-eshop-optimizer' ) );
		}
		if ( class_exists( '\Rooster\Core\Modules' ) ) {
			\Rooster\Core\Modules::load( 'abilities/changes' );
		}
		$ops = array();
		foreach ( $groups as $group => $values ) {
			if ( array() === $values ) {
				continue;
			}
			$current = \Rooster\Core\Setup::group( (string) $group );
			$clean   = \Rooster\Modules\Admin\Settings::sanitize( (string) $group, array_merge( $current, $values ) );
			$changed = array_intersect_key( $clean, $values );
			if ( array() !== $changed ) {
				$ops[] = array( 'type' => 'settings', 'args' => array( 'group' => (string) $group, 'values' => $changed ) );
			}
		}
		if ( array() === $ops ) {
			return new WP_Error( 'aieo_nothing', __( 'Nothing to save: the theme does not know these settings.', 'ai-eshop-optimizer' ) );
		}
		$draft = \Rooster\Modules\Abilities\Changes::draft( 'rooster-one/header', $groups, $ops, $summary );
		return \Rooster\Modules\Abilities\Changes::apply( (string) $draft['change_id'] );
	}

	
	public function ajax_layout_save() {
		AIEO_DMM::verify_ajax_request();
		if ( ! current_user_can( 'edit_theme_options' ) ) {
			wp_send_json_error( array( 'message' => __( 'Only someone who may change the site\'s appearance can change its header.', 'ai-eshop-optimizer' ) ) );
		}
		if ( ! self::layout_ready() ) {
			wp_send_json_error( array( 'message' => __( 'This version of Rooster Zero cannot store a header layout yet: update the theme.', 'ai-eshop-optimizer' ) ) );
		}
		
		
		$layout  = isset( $_POST['header_layout'] ) && is_array( $_POST['header_layout'] ) ? wp_unslash( $_POST['header_layout'] ) : array();
		$general = array();
		foreach ( array( 'announcement_message', 'announcement_href' ) as $key ) {
			if ( isset( $_POST['general'][ $key ] ) && is_scalar( $_POST['general'][ $key ] ) ) {
				
				$general[ $key ] = (string) wp_unslash( $_POST['general'][ $key ] );
			}
		}
		$use = ! empty( $_POST['header_layout_use'] );
		
		$part = (string) rooster_setting( 'general', 'part_header', '' );
		if ( $use && self::BUILDER_PART !== $part && self::builder_variant_exists() ) {
			update_option( self::PREVIOUS_PART_KEY, $part, false );
			$general['part_header'] = self::BUILDER_PART;
		} elseif ( ! $use && self::BUILDER_PART === $part ) {
			$general['part_header'] = self::previous_part();
		}
		$applied = self::apply_theme_settings(
			array(
				'design'  => array( 'header_layout' => $layout ),
				'general' => $general,
			),
			__( 'Header layout', 'ai-eshop-optimizer' )
		);
		if ( is_wp_error( $applied ) ) {
			wp_send_json_error( array( 'message' => $applied->get_error_message() ) );
		}
		wp_send_json_success( array( 'message' => __( 'Saved: the header layout. The change log can undo it.', 'ai-eshop-optimizer' ) ) );
	}

	
	public function ajax_theme_actions_save() {
		AIEO_DMM::verify_ajax_request();
		if ( ! current_user_can( 'edit_theme_options' ) ) {
			wp_send_json_error( array( 'message' => __( 'Only someone who may change the site\'s appearance can change its header.', 'ai-eshop-optimizer' ) ) );
		}
		$design = array();
		foreach ( array( 'header_actions', 'header_actions_phone' ) as $key ) {
			
			if ( isset( $_POST[ $key ] ) && is_array( $_POST[ $key ] ) && self::theme_has_design( $key ) ) {
				
				$design[ $key ] = wp_unslash( $_POST[ $key ] );
			}
		}
		$applied = self::apply_theme_settings( array( 'design' => $design ), __( 'Header actions', 'ai-eshop-optimizer' ) );
		if ( is_wp_error( $applied ) ) {
			wp_send_json_error( array( 'message' => $applied->get_error_message() ) );
		}
		wp_send_json_success( array( 'message' => __( 'Saved: the header actions. The change log can undo it.', 'ai-eshop-optimizer' ) ) );
	}

	public function ajax_save() {
		AIEO_DMM::verify_ajax_request();

		$valid = array();
		if ( class_exists( 'AIEO_Header_Actions_Block' ) ) {
			foreach ( AIEO_Header_Actions_Block::items_catalog() as $g ) {
				$valid[ $g['slug'] ] = true;
			}
		}

		$out = array();
		foreach ( array( 'mobile', 'desktop' ) as $device ) {
			$out[ $device ] = array(
				'items' => $this->clean_items( $device, $valid ),
				'gap'   => $this->clean_gap( $device ),
				'color' => $this->clean_color( $device ),
				'hover' => $this->clean_color( $device, 'hover' ),
			);
		}

		update_option( self::OPTION_KEY, $out, false );
		wp_send_json_success( array(
			'mobile'  => count( $out['mobile']['items'] ),
			'desktop' => count( $out['desktop']['items'] ),
		) );
	}

	
	private function clean_items( $device, $valid ) {
		$field = 'header_actions_' . $device . '_items';
		$clean = array();
		if ( ! isset( $_POST[ $field ] ) ) {
			return $clean;
		}
		$raw  = sanitize_text_field( wp_unslash( (string) $_POST[ $field ] ) );
		$rows = json_decode( $raw, true );
		if ( ! is_array( $rows ) ) {
			return $clean;
		}
		$seen = array();
		foreach ( $rows as $row ) {
			if ( ! is_array( $row ) || empty( $row['slug'] ) ) {
				continue;
			}
			$slug = sanitize_key( $row['slug'] );
			if ( ! isset( $valid[ $slug ] ) || isset( $seen[ $slug ] ) ) {
				continue; 
			}
			$clean[]      = array(
				'slug'    => $slug,
				'enabled' => ! empty( $row['enabled'] ),
				'label'   => ! empty( $row['label'] ),
			);
			$seen[ $slug ] = true;
		}
		return $clean;
	}

	
	private function clean_gap( $device ) {
		$field = 'header_actions_' . $device . '_gap';
		if ( ! isset( $_POST[ $field ] ) ) {
			return '';
		}
		$raw = sanitize_text_field( wp_unslash( (string) $_POST[ $field ] ) );
		$raw = trim( $raw );
		return ( '' !== $raw && is_numeric( $raw ) ) ? (string) floatval( $raw ) : '';
	}

	
	private function clean_color( $device, $which = 'color' ) {
		if ( empty( $_POST[ 'header_actions_' . $device . '_' . $which . '_custom' ] ) ) {
			return '';
		}
		$field = 'header_actions_' . $device . '_' . $which;
		if ( ! isset( $_POST[ $field ] ) ) {
			return '';
		}
		$raw = sanitize_hex_color( wp_unslash( (string) $_POST[ $field ] ) );
		return is_string( $raw ) ? $raw : '';
	}

	public function render_subtab() {
		if ( self::is_zero() ) {
			$this->render_template( 'header-layout.php' );
			return;
		}
		$configs = array();
		if ( class_exists( 'AIEO_Header_Actions_Block' ) ) {
			foreach ( array( 'mobile', 'desktop' ) as $device ) {
				$configs[ $device ] = AIEO_Header_Actions_Block::resolve_config( $device );
			}
		}
		$this->render_template( 'header-actions.php', array( 'configs' => $configs ) );
	}
}