/**
 * ImageSecurityModule
 *
 * NestJS module for image security validation and processing.
 * Provides ImageProcessorService with configurable options.
 *
 * @example Static configuration
 * ```typescript
 * @Module({
 *   imports: [
 *     ImageSecurityModule.forRoot({
 *       maxDimension: 2000,
 *       thumbnailSize: 200,
 *     }),
 *   ],
 * })
 * export class AppModule {}
 * ```
 *
 * @example Async configuration with ConfigService
 * ```typescript
 * @Module({
 *   imports: [
 *     ImageSecurityModule.forRootAsync({
 *       inject: [ConfigService],
 *       useFactory: (config: ConfigService) => ({
 *         maxDimension: config.get('IMAGE_MAX_DIMENSION', 4000),
 *         thumbnailSize: config.get('IMAGE_THUMBNAIL_SIZE', 300),
 *       }),
 *     }),
 *   ],
 * })
 * export class AppModule {}
 * ```
 */

import { Module, DynamicModule, Global } from '@nestjs/common'

import {
  type ImageProcessingOptions,
  type ImageSecurityAsyncOptions,
  DEFAULT_PROCESSING_OPTIONS,
} from './types'
import { ImageProcessorService, IMAGE_PROCESSOR_OPTIONS } from './processing'

@Global()
@Module({})
export class ImageSecurityModule {
  /**
   * Configure the module with static options.
   *
   * @param options - Processing options (all optional, have defaults)
   * @returns Dynamic module configuration
   */
  static forRoot(options: ImageProcessingOptions = {}): DynamicModule {
    return {
      module: ImageSecurityModule,
      providers: [
        {
          provide: IMAGE_PROCESSOR_OPTIONS,
          useValue: { ...DEFAULT_PROCESSING_OPTIONS, ...options },
        },
        ImageProcessorService,
      ],
      exports: [ImageProcessorService],
    }
  }

  /**
   * Configure the module with async options.
   * Useful when options depend on ConfigService or other async sources.
   *
   * @param asyncOptions - Async configuration options
   * @returns Dynamic module configuration
   */
  static forRootAsync(asyncOptions: ImageSecurityAsyncOptions): DynamicModule {
    return {
      module: ImageSecurityModule,
      providers: [
        {
          provide: IMAGE_PROCESSOR_OPTIONS,
          inject: asyncOptions.inject || [],
          // eslint-disable-next-line @typescript-eslint/no-explicit-any
          useFactory: async (...args: any[]) => {
            const options = await asyncOptions.useFactory(...args)
            return { ...DEFAULT_PROCESSING_OPTIONS, ...options }
          },
        },
        ImageProcessorService,
      ],
      exports: [ImageProcessorService],
    }
  }
}