import { Injectable } from '@nestjs/common';
import { BaseFactory } from './base.factory';
import { IntegrationStrategy } from '../strategies/integration.strategy';
import { GupshupSmsStrategy } from '../strategies/sms/gupshup-sms.strategy';
import { TubelightSmsStrategy } from '../strategies/sms/tubelight-sms.strategy';
import { Msg91SmsStrategy } from '../strategies/sms/msg91-sms.strategy';

@Injectable()
export class SmsFactory implements BaseFactory {
  constructor(
    private gupshupSmsStrategy: GupshupSmsStrategy,
    private tubelightSmsStrategy: TubelightSmsStrategy,
    private msg91SmsStrategy: Msg91SmsStrategy,
  ) {}

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

    switch (key) {
      case 'api_gupshup':
      case 'sms_gupshup':
        return this.gupshupSmsStrategy;
      case 'api_tubelight':
      case 'sms_tubelight':
        return this.tubelightSmsStrategy;
      case 'api_msg91':
      case 'sms_msg91':
        return this.msg91SmsStrategy;

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

  getSupportedCombinations(): Array<{ service: string; provider: string }> {
    return [
      { service: 'API', provider: 'gupshup' },
      { service: 'API', provider: 'tubelight' },
      { service: 'API', provider: 'msg91' },
    ];
  }

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