import type { DynamicModule } from '@nestjs/common';
import type { Constructor } from '@rsdk/common';
import type { ILogger } from '@rsdk/logging';

import { ConfigReloadIndicator } from '../config-reload.indicator';
import { ConfigContext } from '../context/config.context';
import type { PropertyToken } from '../metadata';
import type { ReloadEvents } from '../reload';
import type { ConfigSource } from '../sources';
import type { PropertyMetadata } from '../types';
import type { Vars } from '../vars.class';

import { AdditionalSourceInitializer } from './additional-source.initializer';

/**
 * Модуль реализующий работу с `AdditionalSource` указанными в конфиге.
 * Инициализирует все `source` в хуке `onModuleInit`
 */
export class AdditionalSourceModule {
  static forRoot(options: Constructor<ConfigSource>[]): DynamicModule {
    return {
      imports: [
        {
          global: true,
          module: AdditionalSourceModule,
          providers: [
            {
              inject: [ConfigContext],
              provide: AdditionalSourceInitializer,
              useFactory: (configContext: ConfigContext) =>
                new AdditionalSourceInitializer(configContext, options),
            },
          ],
          exports: [AdditionalSourceInitializer],
        },
      ],
      providers: [ConfigReloadIndicator],
      module: AdditionalSourceModule,
    };
  }
}

export interface AdditionalSourceOptions {
  sources: Constructor<ConfigSource>[] | undefined;
  logger: ILogger;
  properties: Map<PropertyToken, unknown>;
  propertyMetadata: Map<string, PropertyMetadata>;
  vars: Vars;
  events: ReloadEvents;
  prefix: string;
}