import { DynamicModule, Module } from "@nestjs/common";
import {
  AI_PROVIDER,
  AIModule,
  type AIModuleOptions,
  type AIProvider,
} from "@cv/ai-provider";
import { CVParserService } from "./ai-parser.service";

export const CV_PARSER_SERVICE = Symbol("CV_PARSER_SERVICE");

@Module({})
export class CVParserModule {
  static forRoot(aiOptions: AIModuleOptions): DynamicModule {
    return {
      module: CVParserModule,
      imports: [AIModule.forRoot(aiOptions)],
      providers: [
        {
          provide: CV_PARSER_SERVICE,
          inject: [AI_PROVIDER],
          useFactory: (aiProvider: AIProvider): CVParserService =>
            new CVParserService(aiProvider),
        },
      ],
      exports: [CV_PARSER_SERVICE],
    };
  }

  /**
   * Resolve the AI provider type from ConfigService at factory time.
   */
  static forConfig(): DynamicModule {
    return {
      module: CVParserModule,
      imports: [AIModule.forConfig()],
      providers: [
        {
          provide: CV_PARSER_SERVICE,
          inject: [AI_PROVIDER],
          useFactory: (aiProvider: AIProvider): CVParserService =>
            new CVParserService(aiProvider),
        },
      ],
      exports: [CV_PARSER_SERVICE],
    };
  }
}