<?php
/**
 * Plugin Name: SLB — Section Layout Builder: Section-Based Website Builder
 * Plugin URI:  https://rabbitmarketinghouse.in/slb
 * Description: Section-based website builder for WordPress & WooCommerce. Write a JSON schema once; editors get a clean visual editor. No lock-in.
 * Version:     1.0.3
 * Author:      Rabbit Marketing House
 * Author URI:  https://rabbitmarketinghouse.in/
 * License:     GPL-2.0-or-later
 * Text Domain: slb-section-layout-builder
 * Requires PHP: 7.4
 * Requires at least: 5.8
 */

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

define( 'SLBUILD_VERSION', '1.0.3' );
define( 'SLBUILD_PATH', plugin_dir_path( __FILE__ ) );
define( 'SLBUILD_URL', plugin_dir_url( __FILE__ ) );

require_once SLBUILD_PATH . 'includes/SchemaParser.php';
require_once SLBUILD_PATH . 'includes/DataStore.php';
require_once SLBUILD_PATH . 'includes/Resolver.php';
require_once SLBUILD_PATH . 'includes/SectionLoader.php';
require_once SLBUILD_PATH . 'includes/helpers.php';
require_once SLBUILD_PATH . 'includes/Fields.php';
require_once SLBUILD_PATH . 'includes/WooFields.php';
require_once SLBUILD_PATH . 'includes/EditorPanel.php';
require_once SLBUILD_PATH . 'includes/GlobalSettings.php';
require_once SLBUILD_PATH . 'includes/ThemeSetup.php';
require_once SLBUILD_PATH . 'includes/SettingsHooks.php';

add_action( 'admin_menu', array( SLBUILD_EditorPanel::instance(), 'register_menu' ) );
add_action( 'rest_api_init', array( SLBUILD_EditorPanel::instance(), 'register_rest_routes' ) );
add_filter( 'page_row_actions', array( SLBUILD_EditorPanel::instance(), 'add_page_row_action' ), 10, 2 );
add_action( 'edit_form_after_title', array( SLBUILD_EditorPanel::instance(), 'add_edit_form_button' ) );
add_action( 'admin_bar_menu', array( SLBUILD_EditorPanel::instance(), 'add_admin_bar_link' ), 100 );
add_action( 'admin_enqueue_scripts', array( SLBUILD_EditorPanel::instance(), 'enqueue_admin_page_flow' ) );
add_action( 'enqueue_block_editor_assets', array( SLBUILD_EditorPanel::instance(), 'enqueue_gutenberg_assets' ) );

SLBUILD_GlobalSettings::instance()->init();

// WC templates: SLB plugin directory is checked before the theme.
add_filter( 'woocommerce_locate_template', static function( $template, $template_name ) {
	$plugin_path = SLBUILD_PATH . 'woocommerce/' . $template_name;
	if ( file_exists( $plugin_path ) ) {
		return $plugin_path;
	}
	return $template;
}, 10, 2 );

// Auto-seed global regions when a new SLB theme is activated.
add_action( 'after_switch_theme', array( 'SLBUILD_ThemeSetup', 'seed_globals' ) );

// Bridge saved global settings into WP/WC hooks (after WC has loaded).
add_action( 'init', array( 'SLBUILD_SettingsHooks', 'init' ), 20 );

// Enqueue per-section assets (scripts/styles declared in the schema `assets` key).
add_action( 'wp_enqueue_scripts', array( SLBUILD_SectionLoader::instance(), 'maybe_enqueue_assets' ), 20 );

// Load the bundled, precompiled utility stylesheet on SLB pages and preview. No
// script runs in the browser and nothing is fetched from an external host.
// Themes that already load Tailwind with their own config should opt out via:
//   add_filter( 'slbuild_load_tailwind', '__return_false' );
add_action( 'wp_enqueue_scripts', function() {
	$is_preview = isset( $_GET['slbuild_preview'] ) || isset( $_GET['slbuild_preview_token'] ); // phpcs:ignore WordPress.Security.NonceVerification
	if ( ! $is_preview && ! ( is_singular() && get_post_meta( get_the_ID(), SLBUILD_DataStore::PAGE_META_KEY, true ) ) ) {
		return;
	}
	if ( apply_filters( 'slbuild_load_tailwind', true ) ) {
		wp_enqueue_style( 'slbuild-tailwind', SLBUILD_URL . 'assets/slbuild-tailwind.css', array(), SLBUILD_VERSION );
	}
	// Saved colour-scheme overrides are generated rules, kept apart from the
	// compiled file so they still apply when a theme opts out of it.
	$overrides = function_exists( 'slbuild_scheme_override_css' ) ? slbuild_scheme_override_css() : '';
	if ( '' !== $overrides ) {
		wp_register_style( 'slbuild-scheme-overrides', false, array(), SLBUILD_VERSION );
		wp_enqueue_style( 'slbuild-scheme-overrides' );
		wp_add_inline_style( 'slbuild-scheme-overrides', $overrides );
	}
} );

// Never cache any SLB preview request.
// Covers all major caching plugins (DONOTCACHEPAGE) and CDNs (Cache-Control header).
add_action( 'init', function() {
	$is_preview = isset( $_GET['slbuild_preview'] )        // phpcs:ignore WordPress.Security.NonceVerification
	           || isset( $_GET['slbuild_preview_token'] ); // phpcs:ignore WordPress.Security.NonceVerification
	if ( ! $is_preview ) {
		return;
	}
	if ( ! defined( 'DONOTCACHEPAGE' ) ) {
		define( 'DONOTCACHEPAGE', true ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound
	}
	header( 'Cache-Control: no-store, no-cache, must-revalidate, private' );
	header( 'Pragma: no-cache' );
	do_action( 'litespeed_control_set_nocache', 'slbuild_preview' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
} );

// Hide the admin bar inside the preview iframe.
add_filter( 'show_admin_bar', function( $show ) {
	if ( isset( $_GET['slbuild_preview'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
		return false;
	}
	return $show;
} );

// Noindex pages served via a preview token - they are client-review-only URLs.
add_action( 'wp_head', function() {
	if ( isset( $_GET['slbuild_preview_token'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
		echo '<meta name="robots" content="noindex, nofollow">' . "\n";
	}
} );

// Output theme-settings CSS custom properties via wp_add_inline_style().
// Priority 5 - before theme styles so Tailwind arbitrary values can reference them.
add_action( 'wp_enqueue_scripts', function() {
	if ( ! function_exists( 'slbuild_global_setting' ) ) {
		return;
	}

	$lines = array();

	$color_fields = array(
		'primary_color'    => '--slb-primary',
		'secondary_color'  => '--slb-secondary',
		'tertiary_color'   => '--slb-tertiary',
		'surface_color'    => '--slb-surface',
		'on_surface_color' => '--slb-on-surface',
		'accent_color'     => '--slb-accent',
	);
	foreach ( $color_fields as $field => $var ) {
		$val = sanitize_hex_color( (string) slbuild_global_setting( 'theme-settings', $field, '' ) );
		if ( $val ) {
			$lines[] = "\t" . $var . ': ' . $val . ';';
		}
	}

	$threshold = slbuild_global_setting( 'theme-settings', 'free_shipping_threshold', '' );
	if ( $threshold !== '' ) {
		$lines[] = "\t--slb-free-shipping: " . (int) $threshold . ';';
	}

	if ( empty( $lines ) ) {
		return;
	}

	wp_register_style( 'slbuild-theme-vars', false, array(), SLBUILD_VERSION );
	wp_enqueue_style( 'slbuild-theme-vars' );
	wp_add_inline_style( 'slbuild-theme-vars', ':root {' . "\n" . implode( "\n", $lines ) . "\n}" );
}, 5 );