import { AppServices } from './app-services';
import { NoopAnalyticsService } from './analytics/noop-analytics-service';
import { UmamiAnalyticsService } from './analytics/umami-analytics-service';
import { MemoryCacheService } from './cache/memory-cache-service';
import { RedisCacheService } from './cache/redis-cache-service';
import { GlitchtipErrorReportingService } from './errors/glitchtip-error-reporting-service';
import { NoopErrorReportingService } from './errors/noop-error-reporting-service';
import { PinoLoggerService } from './logging/pino-logger-service';
import { config, getMaskedConfig } from '../config';

let singleton: AppServices | undefined;
export function getServerAppServices(): AppServices {
  if (singleton) return singleton;

  // Create logger first to log initialization
  const logger = new PinoLoggerService('server');
  
  logger.info('Initializing server application services', {
    environment: getMaskedConfig(),
    timestamp: new Date().toISOString(),
  });

  logger.info('Service configuration', {
    umamiEnabled: config.analytics.umami.enabled,
    sentryEnabled: config.errors.glitchtip.enabled,
    redisEnabled: config.cache.redis.enabled,
    mailEnabled: Boolean(config.mail.host && config.mail.user),
  });

  const analytics = config.analytics.umami.enabled
    ? new UmamiAnalyticsService({ enabled: true })
    : new NoopAnalyticsService();

  if (config.analytics.umami.enabled) {
    logger.info('Umami analytics service initialized');
  } else {
    logger.info('Noop analytics service initialized (analytics disabled)');
  }

  const errors = config.errors.glitchtip.enabled
    ? new GlitchtipErrorReportingService({ enabled: true })
    : new NoopErrorReportingService();

  if (config.errors.glitchtip.enabled) {
    logger.info('GlitchTip error reporting service initialized');
  } else {
    logger.info('Noop error reporting service initialized (error reporting disabled)');
  }

  const cache = config.cache.redis.enabled && config.cache.redis.url
    ? new RedisCacheService({
        url: config.cache.redis.url,
        keyPrefix: config.cache.redis.keyPrefix,
      })
    : new MemoryCacheService();

  if (config.cache.redis.enabled) {
    logger.info('Redis cache service initialized', {
      keyPrefix: config.cache.redis.keyPrefix
    });
  } else {
    logger.info('Memory cache service initialized (Redis not configured)');
  }

  logger.info('Pino logger service initialized', {
    name: 'server',
    level: config.logging.level,
  });

  singleton = new AppServices(analytics, errors, cache, logger);
  
  logger.info('All application services initialized successfully');
  
  return singleton;
}