@logistically/events-nestjs/dist/decorators/auto-events.decorator.js

NestJS integration for @logistically/events v3 - Event-driven architecture with Redis Streams

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AUTO_REGISTER_EVENTS_METADATA = void 0;
exports.AutoEvents = AutoEvents;
const common_1 = require("@nestjs/common");
exports.AUTO_REGISTER_EVENTS_METADATA = 'auto_register_events';
/**
 * Decorator to mark a service for automatic event handler registration
 * This will automatically discover and register all @AutoEventHandler methods
 *
 * USAGE:
 * @Injectable()
 * @AutoEvents()
 * export class MyService {
 *   // No need to implement OnModuleInit!
 *   // The decorator handles everything automatically
 * }
 */
function AutoEvents(options = { enabled: true }) {
    return function (target) {
        // Set the metadata
        (0, common_1.SetMetadata)(exports.AUTO_REGISTER_EVENTS_METADATA, options)(target);
        // Store the original onModuleInit method if it exists
        const originalOnModuleInit = target.prototype.onModuleInit;
        // Override onModuleInit to auto-register the service
        target.prototype.onModuleInit = async function (...args) {
            // Call the original onModuleInit if it exists
            if (originalOnModuleInit) {
                await originalOnModuleInit.apply(this, args);
            }
            // Auto-register this service with EventDiscoveryService
            // Use setImmediate to ensure all dependencies are resolved
            setImmediate(async () => {
                try {
                    const eventDiscoveryService = this.eventDiscoveryService;
                    if (eventDiscoveryService && typeof eventDiscoveryService.addServiceForAutoRegistration === 'function') {
                        await eventDiscoveryService.addServiceForAutoRegistration(this);
                    }
                }
                catch (error) {
                    console.debug(`Auto-registration failed for ${target.name}:`, error.message);
                }
            });
        };
    };
}