import { Injectable } from '@nestjs/common';
import { BaseFactory } from './base.factory';
import { IntegrationStrategy } from '../strategies/integration.strategy';
import { WhatsAppStrategy } from '../strategies/whatsapp/whatsapp.strategy';
import { WhatsAppCloudStrategy } from '../strategies/whatsapp/whatsapp-cloud.strategy';
import { GupshupWhatsAppStrategy } from '../strategies/whatsapp/gupshup-whatsapp.strategy';
import { TubelightWhatsAppStrategy } from '../strategies/whatsapp/tubelight-whatsapp.strategy';

@Injectable()
export class WhatsAppFactory implements BaseFactory {
  constructor(
    private whatsappStrategy: WhatsAppStrategy,
    private whatsappCloudStrategy: WhatsAppCloudStrategy,
    private gupshupWhatsAppStrategy: GupshupWhatsAppStrategy,
    private tubelightWhatsAppStrategy: TubelightWhatsAppStrategy,
  ) {}

  createProvider(service: string, provider: string): IntegrationStrategy {
    const key = `${service.toLowerCase()}_${provider.toLowerCase()}`;

    switch (key) {
      case 'api_whatsapp':
        return this.whatsappStrategy;
      case 'api_whatsapp-cloud':
      case 'api_meta':
        return this.whatsappCloudStrategy;
      case 'api_gupshup':
        return this.gupshupWhatsAppStrategy;
      case 'api_tubelight':
        return this.tubelightWhatsAppStrategy;

      default:
        throw new Error(
          `Unsupported WhatsApp service/provider: ${service}/${provider}`,
        );
    }
  }

  getSupportedCombinations(): Array<{ service: string; provider: string }> {
    return [
      { service: 'API', provider: 'whatsapp' },
      { service: 'API', provider: 'whatsapp-cloud' },
      { service: 'API', provider: 'meta' },
      { service: 'API', provider: 'gupshup' },
      { service: 'API', provider: 'tubelight' },
    ];
  }

  validateCombination(service: string, provider: string): boolean {
    return this.getSupportedCombinations().some(
      (combo) =>
        combo.service.toLowerCase() === service.toLowerCase() &&
        combo.provider.toLowerCase() === provider.toLowerCase(),
    );
  }
}