import * as plugins from './plugins.js';
import * as paths from './paths.js';
import { Smarts3Server } from './classes/smarts3-server.js';

/**
 * Authentication configuration
 */
export interface IAuthConfig {
  enabled: boolean;
  credentials: Array<{
    accessKeyId: string;
    secretAccessKey: string;
  }>;
}

/**
 * CORS configuration
 */
export interface ICorsConfig {
  enabled: boolean;
  allowedOrigins?: string[];
  allowedMethods?: string[];
  allowedHeaders?: string[];
  exposedHeaders?: string[];
  maxAge?: number;
  allowCredentials?: boolean;
}

/**
 * Logging configuration
 */
export interface ILoggingConfig {
  level?: 'error' | 'warn' | 'info' | 'debug';
  format?: 'text' | 'json';
  enabled?: boolean;
}

/**
 * Request limits configuration
 */
export interface ILimitsConfig {
  maxObjectSize?: number;
  maxMetadataSize?: number;
  requestTimeout?: number;
}

/**
 * Server configuration
 */
export interface IServerConfig {
  port?: number;
  address?: string;
  silent?: boolean;
}

/**
 * Storage configuration
 */
export interface IStorageConfig {
  directory?: string;
  cleanSlate?: boolean;
}

/**
 * Complete smarts3 configuration
 */
export interface ISmarts3Config {
  server?: IServerConfig;
  storage?: IStorageConfig;
  auth?: IAuthConfig;
  cors?: ICorsConfig;
  logging?: ILoggingConfig;
  limits?: ILimitsConfig;
}

/**
 * Default configuration values
 */
const DEFAULT_CONFIG: ISmarts3Config = {
  server: {
    port: 3000,
    address: '0.0.0.0',
    silent: false,
  },
  storage: {
    directory: paths.bucketsDir,
    cleanSlate: false,
  },
  auth: {
    enabled: false,
    credentials: [
      {
        accessKeyId: 'S3RVER',
        secretAccessKey: 'S3RVER',
      },
    ],
  },
  cors: {
    enabled: false,
    allowedOrigins: ['*'],
    allowedMethods: ['GET', 'POST', 'PUT', 'DELETE', 'HEAD', 'OPTIONS'],
    allowedHeaders: ['*'],
    exposedHeaders: ['ETag', 'x-amz-request-id', 'x-amz-version-id'],
    maxAge: 86400,
    allowCredentials: false,
  },
  logging: {
    level: 'info',
    format: 'text',
    enabled: true,
  },
  limits: {
    maxObjectSize: 5 * 1024 * 1024 * 1024, // 5GB
    maxMetadataSize: 2048,
    requestTimeout: 300000, // 5 minutes
  },
};

/**
 * Merge user config with defaults (deep merge)
 */
function mergeConfig(userConfig: ISmarts3Config): Required<ISmarts3Config> {
  return {
    server: {
      ...DEFAULT_CONFIG.server!,
      ...(userConfig.server || {}),
    },
    storage: {
      ...DEFAULT_CONFIG.storage!,
      ...(userConfig.storage || {}),
    },
    auth: {
      ...DEFAULT_CONFIG.auth!,
      ...(userConfig.auth || {}),
    },
    cors: {
      ...DEFAULT_CONFIG.cors!,
      ...(userConfig.cors || {}),
    },
    logging: {
      ...DEFAULT_CONFIG.logging!,
      ...(userConfig.logging || {}),
    },
    limits: {
      ...DEFAULT_CONFIG.limits!,
      ...(userConfig.limits || {}),
    },
  };
}

/**
 * Main Smarts3 class - production-ready S3-compatible server
 */
export class Smarts3 {
  // STATIC
  public static async createAndStart(configArg: ISmarts3Config = {}) {
    const smartS3Instance = new Smarts3(configArg);
    await smartS3Instance.start();
    return smartS3Instance;
  }

  // INSTANCE
  public config: Required<ISmarts3Config>;
  public s3Instance: Smarts3Server;

  constructor(configArg: ISmarts3Config = {}) {
    this.config = mergeConfig(configArg);
  }

  public async start() {
    this.s3Instance = new Smarts3Server({
      port: this.config.server.port,
      address: this.config.server.address,
      directory: this.config.storage.directory,
      cleanSlate: this.config.storage.cleanSlate,
      silent: this.config.server.silent,
      config: this.config, // Pass full config to server
    });
    await this.s3Instance.start();

    if (!this.config.server.silent) {
      console.log('s3 server is running');
    }
  }

  public async getS3Descriptor(
    optionsArg?: Partial<plugins.tsclass.storage.IS3Descriptor>,
  ): Promise<plugins.tsclass.storage.IS3Descriptor> {
    const descriptor = this.s3Instance.getS3Descriptor();
    return {
      ...descriptor,
      ...(optionsArg ? optionsArg : {}),
    };
  }

  public async createBucket(bucketNameArg: string) {
    // Call the filesystem store directly instead of using the client library
    await this.s3Instance.store.createBucket(bucketNameArg);
    return { name: bucketNameArg };
  }

  public async stop() {
    await this.s3Instance.stop();
  }
}

// Export the custom server class for direct use
export { Smarts3Server } from './classes/smarts3-server.js';