<?php
/**
 * Settings Page
 *
 * @package    AdX-Ad-Inserter
 */

defined( 'ABSPATH' ) || exit;

/**
 * Sanitize raw code input.
 *
 * @param string $value The value to sanitize.
 * @return string Sanitized value.
 */
function adxbyms_sanitize_raw_code( $value ) {
	if ( current_user_can( 'unfiltered_html' ) ) {
		// Keep exactly what admin pasted (scripts allowed).
		return $value;
	}

	// Fallback for users without unfiltered_html.
	// (Script tags won't survive; this is expected by WP security model).
	$allowed = array(
		'div'      => array(
			'id'     => true,
			'class'  => true,
			'style'  => true,
			'data-*' => true,
		),
		'span'     => array(
			'id'     => true,
			'class'  => true,
			'style'  => true,
			'data-*' => true,
		),
		'ins'      => array(
			'class'  => true,
			'style'  => true,
			'data-*' => true,
		),
		'noscript' => array(),
	);

	return wp_kses( $value, $allowed );
}

/**
 * Register the plugin settings
 *
 * @return void
 */
function adxbyms_register_settings() {
	// Main slot/plugin-wide settings
	$settings = array(
		'adxbyms_enabled',
		'adxbyms_popup_enabled',
		'adxbyms_popup_network_code',
		'adxbyms_popup_option',
		'adxbyms_popup_scroll_trigger',
		'adxbyms_ad2_enabled',
		'adxbyms_ad2_network_code',
		'adxbyms_ad2_keywords',
		'adxbyms_anchor_enabled',
		'adxbyms_anchor_network_code',
		'adxbyms_anchor_position',
		'adxbyms_offerwall_onscroll_enabled',
		'adxbyms_offerwall_onscroll_network_code',
		'adxbyms_offerwall_onscroll_logo_url',
		'adxbyms_interstitial_enabled',
		'adxbyms_interstitial_network_code',
		'adxbyms_custom_enabled',
		'adxbyms_header_code',
		'adxbyms_footer_code',
		'adxbyms_ads_txt_enabled',
		'adxbyms_ads_txt_code',
		'adxbyms_slot_enabled',
	);

	foreach ( $settings as $opt ) {
		// Skip custom header/footer code for special handling below
		if ( 'adxbyms_header_code' === $opt || 'adxbyms_footer_code' === $opt || 'adxbyms_ads_txt_code' === $opt ) {
			continue;
		}
		register_setting(
			'adxbyms_settings',
			$opt,
			array(
				'sanitize_callback' => 'adxbyms_sanitize_option',
			)
		);
	}

	// Register header/footer code with custom sanitization
	register_setting(
		'adxbyms_settings',
		'adxbyms_header_code',
		array(
			'type'              => 'string',
			'sanitize_callback' => 'adxbyms_sanitize_raw_code',
			'show_in_rest'      => false,
		)
	);

	register_setting(
		'adxbyms_settings',
		'adxbyms_footer_code',
		array(
			'type'              => 'string',
			'sanitize_callback' => 'adxbyms_sanitize_raw_code',
			'show_in_rest'      => false,
		)
	);

	// ads.txt is plain text
	register_setting(
		'adxbyms_settings',
		'adxbyms_ads_txt_code',
		array(
			'type'              => 'string',
			'sanitize_callback' => 'sanitize_textarea_field',
			'show_in_rest'      => false,
		)
	);

	// Popup scroll trigger (60-100 percentage)
	register_setting(
		'adxbyms_settings',
		'adxbyms_popup_scroll_trigger',
		array(
			'sanitize_callback' => function ( $value ) {
				$value = absint( $value );
				if ( $value < 60 ) {
					return 60;
				}
				return ( $value >= 60 && $value <= 100 ) ? $value : 60;
			},
			'show_in_rest'      => false,
		)
	);

	// Subslot (Display Slot) settings — register for all 10 subslots
	for ( $i = 1; $i <= 10; $i++ ) {
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_enabled", array( 'sanitize_callback' => 'adxbyms_sanitize_option' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_network_code", array( 'sanitize_callback' => 'sanitize_text_field' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_sizes", array( 'sanitize_callback' => 'adxbyms_sanitize_option' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_pages", array( 'sanitize_callback' => 'adxbyms_sanitize_option' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_insertion", array( 'sanitize_callback' => 'sanitize_text_field' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_alignment", array( 'sanitize_callback' => 'sanitize_text_field' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_text", array( 'sanitize_callback' => 'sanitize_text_field' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_offset", array( 'sanitize_callback' => 'absint' ) );
		register_setting( 'adxbyms_settings', "adxbyms_slot_{$i}_devices", array( 'sanitize_callback' => 'adxbyms_sanitize_option' ) );
	}

	// Set default values for booleans if not already present (first install)
	$booleans = array(
		'adxbyms_enabled',
		'adxbyms_ads_txt_enabled',
		'adxbyms_slot_enabled',
		'adxbyms_popup_enabled',
		'adxbyms_ad2_enabled',
		'adxbyms_anchor_enabled',
		'adxbyms_offerwall_onscroll_enabled',
		'adxbyms_interstitial_enabled',
		'adxbyms_custom_enabled',
	);
	foreach ( $booleans as $b ) {
		if ( get_option( $b ) === false ) {
			update_option( $b, 'false' );
		}
	}
	// Defaults for all subslot enable toggles
	for ( $i = 1; $i <= 10; $i++ ) {
		$opt = "adxbyms_slot_{$i}_enabled";
		if ( get_option( $opt ) === false ) {
			update_option( $opt, 'false' );
		}
	}
	// Defaults for all subslot device toggles
	for ( $i = 1; $i <= 10; $i++ ) {
		$opt = "adxbyms_slot_{$i}_devices";
		if ( get_option( $opt ) === false ) {
			update_option( $opt, array( 'desktop', 'mobile' ) );
		}
	}
	// Default for anchor position
	if ( get_option( 'adxbyms_anchor_position' ) === false ) {
		update_option( 'adxbyms_anchor_position', 'TOP_ANCHOR' );
	}
}
add_action( 'admin_init', 'adxbyms_register_settings' );

/**
 * Sanitizer callback for all plugin options.
 *
 * @param mixed $value The value to sanitize.
 * @return mixed Sanitized value.
 */
function adxbyms_sanitize_option( $value ) {
	// Arrays: sanitize recursively (for checkboxes).
	if ( is_array( $value ) ) {
		return array_map( 'sanitize_text_field', $value );
	}
	// Allow <script> etc only in ad code.
	if ( is_string( $value ) && false !== strpos( $value, '<script' ) ) {
		return wp_kses_post( $value );
	}
	// Handle booleans as 'true'/'false'.
	if ( 'true' === $value || 'false' === $value ) {
		return $value;
	}
	// Safe default: plain text
	return sanitize_text_field( $value );
}

/**
 * Add Settings Page to WordPress Admin.
 *
 * @return void
 */
function adxbyms_add_settings_page() {
	// Create a TOP-LEVEL admin menu instead of a Settings submenu.
	add_menu_page(
		__( 'AdX Ad Inserter', 'adx-ad-inserter' ),              // Page title.
		__( 'AdX Ad Inserter', 'adx-ad-inserter' ),              // Menu title.
		'manage_options',               // Capability.
		'adx-ad-inserter',              // Menu slug.
		'adxbyms_settings_page',         // Callback to render content.
		'dashicons-megaphone',          // Icon.
		59                               // Position (optional; before Settings).
	);
}
add_action( 'admin_menu', 'adxbyms_add_settings_page' );

/*
-------------------------------------------------- */
/*
3 – Enqueue Admin Scripts/CSS                      */
/* -------------------------------------------------- */
add_action(
	'admin_enqueue_scripts',
	function ( $hook ) {
		if ( 'toplevel_page_adx-ad-inserter' !== $hook ) {
			return;
		}

		wp_enqueue_style(
			'adxbyms-admin-css',
			plugin_dir_url( __FILE__ ) . './templates/template.css',
			array(),
			ADXBYMS_CSS_VERSION
		);

		wp_enqueue_script(
			'adxbyms-admin-js',
			plugin_dir_url( __FILE__ ) . './templates/template.js',
			array(),
			ADXBYMS_JS_VERSION,
			true
		);

		// Localize script for translations
		wp_localize_script(
			'adxbyms-admin-js',
			'adxbyms_strings',
			array(
				'pluginActive'   => __( 'Plugin Active', 'adx-ad-inserter' ),
				'pluginInactive' => __( 'Plugin Inactive', 'adx-ad-inserter' ),
			)
		);

		// Zapier Chatbot Support Widget Script
		wp_enqueue_script(
			'adxbyms-zapier-chatbot',
			'https://interfaces.zapier.com/assets/web-components/zapier-interfaces/zapier-interfaces.esm.js',
			array(),
			'1.0.0', // Version number for cache busting
			true
		);
	}
);

// Add module type attribute to Zapier script (ES module support)
// Note: WordPress doesn't natively support type="module" in wp_enqueue_script,
// so we use the script_loader_tag filter to add it, which is the recommended approach.
add_filter( 'script_loader_tag', 'adxbyms_add_module_type_to_zapier_script', 10, 3 );


/**
 * Add module type to Zapier script
 *
 * @param string $tag The script tag
 * @param string $handle The script handle
 * @param string $src The script source
 * @return string The modified script tag
 */
function adxbyms_add_module_type_to_zapier_script( $tag, $handle, $src ) {
	// Only modify the Zapier chatbot script
	if ( 'adxbyms-zapier-chatbot' !== $handle ) {
		return $tag;
	}

	// Add type="module" attribute to the script tag
	// This is required for ES module scripts
	// phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedScript -- This filter modifies an already-enqueued script to add type="module" attribute, which is the standard WordPress approach for ES modules.
	if ( false !== strpos( $tag, '<script' ) ) {
		$tag = preg_replace( '/<script\s+/', '<script type="module" ', $tag, 1 );
	}

	return $tag;
}


/**
 * Load Main Settings Template (UI).
 */
require_once plugin_dir_path( __FILE__ ) . './templates/settings-template.php';