<?php
/**
 * Cloudflare module — connect a CF zone for purge + dev-mode toggles.
 *
 * Free tier (this module): API token / global key auth, zone
 * verification, manual purge, auto purge on xSpeed's own purge, dev
 * mode toggle.
 *
 * Pro tier (xspeed-pro): APO toggle, edge cache rules, edge cache TTL.
 * Per FEATURES.md "Cloudflare Integration" §8-10.
 *
 * @package XSpeed
 */

declare(strict_types=1);

namespace XSpeed\Modules\Cloudflare;

use XSpeed\Cloudflare;
use XSpeed\Module;

final class CloudflareModule extends Module {

	public const SLUG    = 'cloudflare';
	public const TIER    = self::TIER_FREE;
	public const VERSION = '1.0.0';

	public function ui_metadata(): array {
		return array(
			'label'        => 'Cloudflare',
			'icon'         => 'Cloud',
			'description'  => 'Connect a Cloudflare zone for automatic edge purging when xSpeed clears its cache, plus a dev-mode toggle.',
			'custom_panel' => 'CloudflarePanel',
		);
	}

	public function settings_schema(): array {
		return array(
			'enabled' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Enable Cloudflare integration',
				'description' => 'Use the credentials below to verify your zone and run purges.',
			),
			'auth_method' => array(
				'type'          => 'enum',
				'default'       => 'token',
				'options'       => array( 'token', 'key' ),
				'option_labels' => array(
					'token' => 'API Token',
					'key'   => 'Global API Key',
				),
				'label'         => 'Authentication',
				'description'   => 'API Tokens (scoped, recommended) or the legacy Global API Key with your account email.',
			),
			'api_token' => array(
				'type'        => 'string',
				'default'     => '',
				'label'       => 'API Token',
				'description' => 'Create a token at dash.cloudflare.com → My Profile → API Tokens. Needs "Zone → Cache Purge" + "Zone Settings" permissions.',
			),
			'email' => array(
				'type'        => 'string',
				'default'     => '',
				'label'       => 'Account Email',
				'description' => 'Only used when Authentication is set to Global API Key.',
			),
			'api_key' => array(
				'type'        => 'string',
				'default'     => '',
				'label'       => 'Global API Key',
				'description' => 'Found at dash.cloudflare.com → My Profile → API Tokens → Global API Key.',
			),
			'zone_id' => array(
				'type'        => 'string',
				'default'     => '',
				'label'       => 'Zone ID',
				'description' => 'The 32-character hex Zone ID from your domain overview page.',
			),
			'auto_purge_on_update' => array(
				'type'        => 'bool',
				'default'     => true,
				'label'       => 'Auto-purge Cloudflare on xSpeed purge',
				'description' => 'When xSpeed clears its own cache (post save, settings change, manual purge), trigger a Cloudflare purge too.',
			),
		);
	}

	public function rest_routes(): array {
		$default = parent::rest_routes();
		return array_merge(
			$default,
			array(
				array(
					'path'     => '/verify',
					'methods'  => 'POST',
					'callback' => array( $this, 'rest_verify' ),
				),
				array(
					'path'     => '/purge',
					'methods'  => 'POST',
					'callback' => array( $this, 'rest_purge' ),
				),
				array(
					'path'     => '/dev-mode',
					'methods'  => 'POST',
					'callback' => array( $this, 'rest_dev_mode' ),
				),
			)
		);
	}

	public function conflicts(): array {
		return array(
			array(
				'plugin'   => 'cloudflare/cloudflare.php',
				'feature'  => 'cloudflare.purge',
				'strategy' => \XSpeed\Conflict_Registry::STRATEGY_WARN,
				'reason'   => 'The official Cloudflare plugin also auto-purges; keep auto-purge enabled in only one to avoid double API calls.',
			),
		);
	}

	public function boot(): void {
		$opts = $this->get_settings();
		if ( empty( $opts['enabled'] ) ) {
			return;
		}
		if ( ! empty( $opts['auto_purge_on_update'] ) ) {
			// xSpeed fires this action whenever it purges its own
			// cache (see Cache::purge_all). Listening here keeps
			// CF in sync without any new wiring elsewhere.
			add_action( 'xspeed_after_purge_all', array( $this, 'on_xspeed_purge' ), 10, 0 );
		}
	}

	public function on_xspeed_purge(): void {
		$opts = $this->get_settings();
		if ( empty( $opts['enabled'] ) || empty( $opts['zone_id'] ) ) {
			return;
		}
		$result = Cloudflare::purge_all( $opts );
		if ( ! $result['ok'] && class_exists( '\\XSpeed\\Activity_Log' ) ) {
			\XSpeed\Activity_Log::record(
				'cloudflare_purge_failed',
				'Cloudflare auto-purge failed: ' . ( $result['body']['message'] ?? 'unknown error' ),
				\XSpeed\Activity_Log::WARN
			);
		}
	}

	public function rest_verify( \WP_REST_Request $request ) {
		return rest_ensure_response( Cloudflare::verify( $this->get_settings() ) );
	}

	public function rest_purge( \WP_REST_Request $request ) {
		$params = $request->get_json_params();
		if ( ! is_array( $params ) ) {
			$params = array();
		}
		$opts = $this->get_settings();
		if ( isset( $params['urls'] ) && is_array( $params['urls'] ) && ! empty( $params['urls'] ) ) {
			return rest_ensure_response( Cloudflare::purge_urls( $opts, $params['urls'] ) );
		}
		return rest_ensure_response( Cloudflare::purge_all( $opts ) );
	}

	public function rest_dev_mode( \WP_REST_Request $request ) {
		$params = $request->get_json_params();
		$on     = ! empty( $params['on'] );
		return rest_ensure_response( Cloudflare::set_dev_mode( $this->get_settings(), $on ) );
	}

	public function cli_commands(): array {
		return array(
			array(
				'name'      => 'xspeed cf',
				'callback'  => array( $this, 'cli_handler' ),
				'shortdesc' => 'Cloudflare verify / purge / dev-mode helpers.',
				'synopsis'  => array(
					array(
						'type'     => 'positional',
						'name'     => 'action',
						'options'  => array( 'verify', 'purge', 'dev-on', 'dev-off' ),
						'optional' => false,
					),
				),
			),
		);
	}

	public function cli_handler( array $args, array $assoc ): void {
		$opts   = $this->get_settings();
		$action = $args[0] ?? 'verify';
		switch ( $action ) {
			case 'verify':
				$res = Cloudflare::verify( $opts );
				break;
			case 'purge':
				$res = Cloudflare::purge_all( $opts );
				break;
			case 'dev-on':
				$res = Cloudflare::set_dev_mode( $opts, true );
				break;
			case 'dev-off':
				$res = Cloudflare::set_dev_mode( $opts, false );
				break;
			default:
				\WP_CLI::error( "Unknown action: $action" );
				return;
		}
		\WP_CLI::log( 'HTTP ' . $res['status'] . ' — ' . ( $res['ok'] ? 'ok' : 'failed' ) );
		\WP_CLI::log( wp_json_encode( $res['body'] ) );
	}
}