/**
 * Repositories Index
 * Export all repository classes for easy importing
 */

export { BaseRepository } from './base';
export { ProvidersRepository } from './providers';
export { RegionsRepository } from './regions';
export { InstancesRepository } from './instances';
export { PricingRepository } from './pricing';
export { GpuInstancesRepository } from './gpu-instances';
export { GpuPricingRepository } from './gpu-pricing';
export { G8InstancesRepository } from './g8-instances';
export { G8PricingRepository } from './g8-pricing';
export { VpuInstancesRepository } from './vpu-instances';
export { VpuPricingRepository } from './vpu-pricing';

import { ProvidersRepository } from './providers';
import { RegionsRepository } from './regions';
import { InstancesRepository } from './instances';
import { PricingRepository } from './pricing';
import { GpuInstancesRepository } from './gpu-instances';
import { GpuPricingRepository } from './gpu-pricing';
import { G8InstancesRepository } from './g8-instances';
import { G8PricingRepository } from './g8-pricing';
import { VpuInstancesRepository } from './vpu-instances';
import { VpuPricingRepository } from './vpu-pricing';
import type { Env } from '../types';

/**
 * Repository factory for creating repository instances
 * Uses lazy singleton pattern to cache repository instances
 */
export class RepositoryFactory {
  private _providers?: ProvidersRepository;
  private _regions?: RegionsRepository;
  private _instances?: InstancesRepository;
  private _pricing?: PricingRepository;
  private _gpuInstances?: GpuInstancesRepository;
  private _gpuPricing?: GpuPricingRepository;
  private _g8Instances?: G8InstancesRepository;
  private _g8Pricing?: G8PricingRepository;
  private _vpuInstances?: VpuInstancesRepository;
  private _vpuPricing?: VpuPricingRepository;

  constructor(private _db: D1Database, private _env?: Env) {}

  /**
   * Access to raw D1 database instance for advanced operations (e.g., batch queries)
   */
  get db(): D1Database {
    return this._db;
  }

  /**
   * Access to environment variables for KRW pricing configuration
   */
  get env(): Env | undefined {
    return this._env;
  }

  get providers(): ProvidersRepository {
    return this._providers ??= new ProvidersRepository(this.db);
  }

  get regions(): RegionsRepository {
    return this._regions ??= new RegionsRepository(this.db);
  }

  get instances(): InstancesRepository {
    return this._instances ??= new InstancesRepository(this.db);
  }

  get pricing(): PricingRepository {
    return this._pricing ??= new PricingRepository(this.db, this._env);
  }

  get gpuInstances(): GpuInstancesRepository {
    return this._gpuInstances ??= new GpuInstancesRepository(this.db);
  }

  get gpuPricing(): GpuPricingRepository {
    return this._gpuPricing ??= new GpuPricingRepository(this.db, this._env);
  }

  get g8Instances(): G8InstancesRepository {
    return this._g8Instances ??= new G8InstancesRepository(this.db);
  }

  get g8Pricing(): G8PricingRepository {
    return this._g8Pricing ??= new G8PricingRepository(this.db, this._env);
  }

  get vpuInstances(): VpuInstancesRepository {
    return this._vpuInstances ??= new VpuInstancesRepository(this.db);
  }

  get vpuPricing(): VpuPricingRepository {
    return this._vpuPricing ??= new VpuPricingRepository(this.db, this._env);
  }
}