<?php

namespace ChargeForms\Includes\Integrations;

use ChargeForms\Includes\Settings;

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

/**
 * Central registry + dispatcher for integrations. Free-tier integrations
 * (webhook, native email) register here directly. Pro-tier integrations
 * (CRM, marketing tools) live in the separate Pro add-on and register via
 * the same `chargeforms_register_integrations` filter, so core never needs
 * to know Pro exists.
 */
class Integration_Manager {

	/** @var Abstract_Integration[] */
	private static $integrations = [];

	public static function boot() {
		add_action( 'init', [ __CLASS__, 'register_defaults' ] );
		add_action( 'chargeforms_after_submission', [ __CLASS__, 'dispatch' ], 10, 3 );
		add_action( 'chargeforms_integration_error', [ __CLASS__, 'notify_on_failure' ], 10, 3 );
	}

	/** Global Settings > Integration Failure — emails the admin when an integration throws. */
	public static function notify_on_failure( string $key, \Throwable $e, int $entry_id ) {
		if ( ! Settings::get( 'integration_failure_email_enabled', true ) ) {
			return;
		}

		wp_mail(
			Settings::get( 'notification_email', get_option( 'admin_email' ) ),
			sprintf( /* translators: %s: integration key, e.g. "webhook" */ __( 'ChargeForms: "%s" integration failed', 'chargeforms' ), $key ),
			sprintf(
				/* translators: 1: entry id, 2: error message */
				__( "The \"%1\$s\" integration failed while processing entry #%2\$d.\n\nError: %3\$s", 'chargeforms' ),
				$key,
				$entry_id,
				$e->getMessage()
			)
		);
	}

	public static function register_defaults() {
		self::register( new Webhook_Integration() );
		self::register( new Mailchimp_Integration() );
		self::register( new Marketing_Integration( 'brevo' ) );
		self::register( new Marketing_Integration( 'activecampaign' ) );
		self::register( new Slack_Integration() );
		self::register( new Discord_Integration() );
		self::register( new Telegram_Integration() );
		self::register( new Notion_Integration() );
		self::register( new Hubspot_Integration() );
		self::register( new Google_Sheets_Integration() );

		/**
		 * Lets the Pro add-on (or any third-party plugin) register additional
		 * integrations without editing ChargeForms core.
		 *
		 * @param Abstract_Integration[] $integrations
		 */
		$extra = apply_filters( 'chargeforms_register_integrations', [] );
		foreach ( $extra as $integration ) {
			self::register( $integration );
		}
	}

	public static function register( Abstract_Integration $integration ) {
		self::$integrations[ $integration->key() ] = $integration;
	}

	public static function all(): array {
		return self::$integrations;
	}

	/**
	 * Runs every registered integration that has settings saved for this form.
	 * Hooked to `chargeforms_after_submission` — fired from Submission_Handler.
	 */
	public static function dispatch( int $entry_id, array $values, array $form ) {
		$form_integrations = $form['settings']['integrations'] ?? [];

		foreach ( self::$integrations as $key => $integration ) {
			$settings = $form_integrations[ $key ] ?? [];

			if ( ! $integration->is_configured( $settings ) ) {
				continue;
			}

			try {
				$integration->process( $values, $form, $entry_id, $settings );
			} catch ( \Throwable $e ) {
				// A failing integration must never break the actual submission.
				do_action( 'chargeforms_integration_error', $key, $e, $entry_id );
			}
		}
	}
}