import { createContainer, InjectionMode, type AwilixContainer } from 'awilix';
import type { AppConfig as StockBotAppConfig } from '@stock-bot/config';
import { appConfigSchema, type AppConfig } from '../config/schemas';
import { 
  registerCoreServices,
  registerCacheServices,
  registerDatabaseServices,
  registerApplicationServices 
} from '../registrations';
import { ServiceLifecycleManager } from '../utils/lifecycle';
import type { ServiceDefinitions, ContainerBuildOptions } from './types';

export class ServiceContainerBuilder {
  private config: Partial<AppConfig> = {};
  private options: ContainerBuildOptions = {
    enableCache: true,
    enableQueue: true,
    enableMongoDB: true,
    enablePostgres: true,
    enableQuestDB: true,
    enableBrowser: true,
    enableProxy: true,
    skipInitialization: false,
    initializationTimeout: 30000,
  };

  withConfig(config: AppConfig | StockBotAppConfig): this {
    this.config = this.transformStockBotConfig(config);
    return this;
  }

  withOptions(options: Partial<ContainerBuildOptions>): this {
    Object.assign(this.options, options);
    return this;
  }

  enableService(service: keyof Omit<ContainerBuildOptions, 'skipInitialization' | 'initializationTimeout'>, enabled = true): this {
    this.options[service] = enabled;
    return this;
  }

  skipInitialization(skip = true): this {
    this.options.skipInitialization = skip;
    return this;
  }

  async build(): Promise<AwilixContainer<ServiceDefinitions>> {
    // Validate and prepare config
    const validatedConfig = this.prepareConfig();
    
    // Create container
    const container = createContainer<ServiceDefinitions>({
      injectionMode: InjectionMode.PROXY,
      strict: true,
    });

    // Register services
    this.registerServices(container, validatedConfig);

    // Initialize services if not skipped
    if (!this.options.skipInitialization) {
      const lifecycleManager = new ServiceLifecycleManager();
      await lifecycleManager.initializeServices(container, this.options.initializationTimeout);
    }

    return container;
  }

  private prepareConfig(): AppConfig {
    const finalConfig = this.applyServiceOptions(this.config);
    return appConfigSchema.parse(finalConfig);
  }

  private applyServiceOptions(config: Partial<AppConfig>): AppConfig {
    return {
      redis: config.redis || {
        enabled: this.options.enableCache ?? true,
        host: 'localhost',
        port: 6379,
        db: 0,
      },
      mongodb: config.mongodb || {
        enabled: this.options.enableMongoDB ?? true,
        uri: '',
        database: '',
      },
      postgres: config.postgres || {
        enabled: this.options.enablePostgres ?? true,
        host: 'localhost',
        port: 5432,
        database: 'postgres',
        user: 'postgres',
        password: 'postgres',
      },
      questdb: this.options.enableQuestDB ? (config.questdb || {
        enabled: true,
        host: 'localhost',
        httpPort: 9000,
        pgPort: 8812,
        influxPort: 9009,
        database: 'questdb',
      }) : undefined,
      proxy: this.options.enableProxy ? (config.proxy || { cachePrefix: 'proxy:', ttl: 3600 }) : undefined,
      browser: this.options.enableBrowser ? (config.browser || { headless: true, timeout: 30000 }) : undefined,
      queue: this.options.enableQueue ? (config.queue || { 
        enabled: true,
        workers: 1,
        concurrency: 1,
        enableScheduledJobs: true,
        delayWorkerStart: false,
        defaultJobOptions: {
          attempts: 3,
          backoff: { type: 'exponential' as const, delay: 1000 },
          removeOnComplete: 100,
          removeOnFail: 50,
        }
      }) : undefined,
    };
  }

  private registerServices(container: AwilixContainer<ServiceDefinitions>, config: AppConfig): void {
    registerCoreServices(container, config);
    registerCacheServices(container, config);
    registerDatabaseServices(container, config);
    registerApplicationServices(container, config);
    
    // Register service container aggregate
    container.register({
      serviceContainer: asFunction(({ 
        config, logger, cache, proxyManager, browser, 
        queueManager, mongoClient, postgresClient, questdbClient 
      }) => ({
        logger,
        cache,
        proxy: proxyManager, // Map proxyManager to proxy
        browser,
        queue: queueManager, // Map queueManager to queue
        mongodb: mongoClient, // Map mongoClient to mongodb
        postgres: postgresClient, // Map postgresClient to postgres
        questdb: questdbClient, // Map questdbClient to questdb
      })).singleton(),
    });
  }

  private transformStockBotConfig(config: AppConfig | StockBotAppConfig): Partial<AppConfig> {
    // If it's already in the new format (has redis AND postgres at top level), return as is
    if ('redis' in config && 'postgres' in config && 'mongodb' in config) {
      return config as AppConfig;
    }

    // Transform from StockBotAppConfig format
    const stockBotConfig = config as StockBotAppConfig;
    return {
      redis: stockBotConfig.database?.dragonfly ? {
        enabled: true,
        host: stockBotConfig.database.dragonfly.host || 'localhost',
        port: stockBotConfig.database.dragonfly.port || 6379,
        password: stockBotConfig.database.dragonfly.password,
        db: stockBotConfig.database.dragonfly.db || 0,
      } : undefined,
      mongodb: stockBotConfig.database?.mongodb ? {
        enabled: stockBotConfig.database.mongodb.enabled ?? true,
        uri: stockBotConfig.database.mongodb.uri,
        database: stockBotConfig.database.mongodb.database,
      } : undefined,
      postgres: stockBotConfig.database?.postgres ? {
        enabled: stockBotConfig.database.postgres.enabled ?? true,
        host: stockBotConfig.database.postgres.host,
        port: stockBotConfig.database.postgres.port,
        database: stockBotConfig.database.postgres.database,
        user: stockBotConfig.database.postgres.user,
        password: stockBotConfig.database.postgres.password,
      } : undefined,
      questdb: stockBotConfig.database?.questdb ? {
        enabled: true,
        host: stockBotConfig.database.questdb.host || 'localhost',
        httpPort: stockBotConfig.database.questdb.httpPort || 9000,
        pgPort: stockBotConfig.database.questdb.pgPort || 8812,
        influxPort: stockBotConfig.database.questdb.ilpPort || 9009,
        database: stockBotConfig.database.questdb.database || 'questdb',
      } : undefined,
      queue: stockBotConfig.queue,
      browser: stockBotConfig.browser,
      proxy: stockBotConfig.proxy,
    };
  }
}

// Add missing import
import { asFunction } from 'awilix';