<?php

namespace AdFuz\Controllers;

use AdFuz\Helpers\Common;
use AdFuz\Helpers\Template;
use AdFuz\Requests\Request;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class SettingsController {

	public const SLUG       = 'adfuz-settings';
	public const OPTION_KEY = 'adfuz_settings';

	protected static function get_capabilities(): array {
		return array( 'manage_options' );
	}

	public static function render_page(): void {
		Common::checkCapability( static::get_capabilities() );

		$request = ( new Request() );

		$active_tab = sanitize_key( $request->input( 'tab', 'get', 'general' ) );

		/**
		 * Filter: adfuz/settings/tabs
		 * Allows Pro (or other plugins) to register additional tabs.
		 *
		 * @param  array  $tabs  [ slug => [ 'label' => '', 'icon' => '' ] ]
		 */
		$tabs = apply_filters(
			'adfuz/settings/tabs',
			array(
				'general' => array(
					'label' => __( 'General', 'ad-fuz' ),
					'icon'  => 'dashicons-admin-settings',
				),
				'geolite' => array(
					'label' => __( 'GeoLite2', 'ad-fuz' ),
					'icon'  => 'dashicons-location-alt',
				),
				'ai'      => array(
					'label' => __( 'AI Settings', 'ad-fuz' ),
					'icon'  => 'dashicons-superhero-alt',
				),
			)
		);

		// Fallback to first tab if the requested tab is not registered
		if ( ! array_key_exists( $active_tab, $tabs ) ) {
			$active_tab = array_key_first( $tabs );
		}

		/**
		 * Action: adfuz_settings_before_render_{tab}
		 * Allows Pro to inject data for its own tabs before render.
		 */
		$tab_data = array();
		$tab_data = apply_filters( "adfuz/settings/tab/data/{$active_tab}", $tab_data );

		/**
		 * Filter: adfuz/settings/tab/template/dir
		 * Allows Pro (or any plugin) to override the template base directory
		 * for a specific tab so templates can live outside the Free plugin.
		 *
		 * @param  string  $template_dir  Default: ADFUZ_TEMPLATE_DIR (Free plugin)
		 * @param  string  $active_tab  The current active tab slug
		 */
		$template_dir = apply_filters(
			'adfuz/settings/tab/template/dir',
			ADFUZ_TEMPLATE_DIR,
			$active_tab
		);

		Template::load(
			'admin/settings/index',
			compact( 'active_tab', 'tabs', 'tab_data', 'template_dir' )
		);
	}

	/**
	 * AJAX: Save settings.
	 * Hook: wp_ajax_adfuz_settings_save
	 * Each tab save is delegated via action hook so Pro can handle its own tabs.
	 */
	public static function save(): void {
		Common::checkCapability( static::get_capabilities() );
		Common::verifyNonce();

		$request = ( new Request() );

		// Common::checkCapability() and Common::verifyNonce() are called at the top for capability and nonce check.
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$tab = sanitize_key( wp_unslash( $request->input( 'tab', 'post', $request->input( 'tab', 'get', 'general' ) ) ) );

		/**
		 * Action: adfuz/settings/save/{tab}
		 * Pro hooks in here to handle saving its own tab data.
		 * Must call wp_send_json_success/error itself.
		 */
		do_action( "adfuz/settings/save/{$tab}" );

		// Fallback if no handler called a response.
		wp_send_json_error( array( 'message' => __( 'No handler for this tab.', 'ad-fuz' ) ) );
	}
}