import { Platform } from '../enums/platform.enum';
import { VersionCode } from '../value-objects/version-code.vo';
import { VersionName } from '../value-objects/version-name.vo';
import { BuildNumber } from '../value-objects/build-number.vo';
import { DownloadUrl } from '../value-objects/download-url.vo';
import { FileSize } from '../value-objects/file-size.vo';
import { FileSha256 } from '../value-objects/file-sha256.vo';
import { Changelog } from '../value-objects/changelog.vo';
import { MinOsVersion } from '../value-objects/min-os-version.vo';

export class AppVersion {
  private _id: string;
  private _platform: Platform;
  private _versionCode: VersionCode;
  private _versionName: VersionName;
  private _buildNumber: BuildNumber;
  private _downloadUrl: DownloadUrl;
  private _fileSize: FileSize;
  private _fileSha256: FileSha256;
  private _changelog: Changelog;
  private _isForceUpdate: boolean;
  private _isEnabled: boolean;
  private _minOsVersion: MinOsVersion | null;
  private _releaseDate: Date | null;
  private _createdAt: Date;
  private _updatedAt: Date;
  private _createdBy: string;
  private _updatedBy: string | null;

  private constructor() {}

  // Getters
  get id(): string {
    return this._id;
  }

  get platform(): Platform {
    return this._platform;
  }

  get versionCode(): VersionCode {
    return this._versionCode;
  }

  get versionName(): VersionName {
    return this._versionName;
  }

  get buildNumber(): BuildNumber {
    return this._buildNumber;
  }

  get downloadUrl(): DownloadUrl {
    return this._downloadUrl;
  }

  get fileSize(): FileSize {
    return this._fileSize;
  }

  get fileSha256(): FileSha256 {
    return this._fileSha256;
  }

  get changelog(): Changelog {
    return this._changelog;
  }

  get isForceUpdate(): boolean {
    return this._isForceUpdate;
  }

  get isEnabled(): boolean {
    return this._isEnabled;
  }

  get minOsVersion(): MinOsVersion | null {
    return this._minOsVersion;
  }

  get releaseDate(): Date | null {
    return this._releaseDate;
  }

  get createdAt(): Date {
    return this._createdAt;
  }

  get updatedAt(): Date {
    return this._updatedAt;
  }

  get createdBy(): string {
    return this._createdBy;
  }

  get updatedBy(): string | null {
    return this._updatedBy;
  }

  // 工厂方法 - 创建新版本
  static create(params: {
    platform: Platform;
    versionCode: VersionCode;
    versionName: VersionName;
    buildNumber: BuildNumber;
    downloadUrl: DownloadUrl;
    fileSize: FileSize;
    fileSha256: FileSha256;
    changelog: Changelog;
    isForceUpdate: boolean;
    minOsVersion?: MinOsVersion | null;
    releaseDate?: Date | null;
    createdBy: string;
  }): AppVersion {
    const version = new AppVersion();
    version._id = crypto.randomUUID();
    version._platform = params.platform;
    version._versionCode = params.versionCode;
    version._versionName = params.versionName;
    version._buildNumber = params.buildNumber;
    version._downloadUrl = params.downloadUrl;
    version._fileSize = params.fileSize;
    version._fileSha256 = params.fileSha256;
    version._changelog = params.changelog;
    version._isForceUpdate = params.isForceUpdate;
    version._isEnabled = true; // 默认启用
    version._minOsVersion = params.minOsVersion ?? null;
    version._releaseDate = params.releaseDate ?? null;
    version._createdAt = new Date();
    version._updatedAt = new Date();
    version._createdBy = params.createdBy;
    version._updatedBy = null;
    return version;
  }

  // 从持久化恢复
  static reconstitute(params: {
    id: string;
    platform: Platform;
    versionCode: VersionCode;
    versionName: VersionName;
    buildNumber: BuildNumber;
    downloadUrl: DownloadUrl;
    fileSize: FileSize;
    fileSha256: FileSha256;
    changelog: Changelog;
    isForceUpdate: boolean;
    isEnabled: boolean;
    minOsVersion: MinOsVersion | null;
    releaseDate: Date | null;
    createdAt: Date;
    updatedAt: Date;
    createdBy: string;
    updatedBy: string | null;
  }): AppVersion {
    const version = new AppVersion();
    version._id = params.id;
    version._platform = params.platform;
    version._versionCode = params.versionCode;
    version._versionName = params.versionName;
    version._buildNumber = params.buildNumber;
    version._downloadUrl = params.downloadUrl;
    version._fileSize = params.fileSize;
    version._fileSha256 = params.fileSha256;
    version._changelog = params.changelog;
    version._isForceUpdate = params.isForceUpdate;
    version._isEnabled = params.isEnabled;
    version._minOsVersion = params.minOsVersion;
    version._releaseDate = params.releaseDate;
    version._createdAt = params.createdAt;
    version._updatedAt = params.updatedAt;
    version._createdBy = params.createdBy;
    version._updatedBy = params.updatedBy;
    return version;
  }

  // 业务方法
  isNewerThan(currentVersionCode: VersionCode): boolean {
    return this._versionCode.isNewerThan(currentVersionCode);
  }

  shouldForceUpdate(): boolean {
    return this._isForceUpdate && this._isEnabled;
  }

  /**
   * 禁用版本
   */
  disable(updatedBy: string): void {
    this._isEnabled = false;
    this._updatedBy = updatedBy;
    this._updatedAt = new Date();
  }

  /**
   * 启用版本
   */
  enable(updatedBy: string): void {
    this._isEnabled = true;
    this._updatedBy = updatedBy;
    this._updatedAt = new Date();
  }

  /**
   * 设置为强制更新
   */
  setForceUpdate(force: boolean, updatedBy: string): void {
    this._isForceUpdate = force;
    this._updatedBy = updatedBy;
    this._updatedAt = new Date();
  }

  /**
   * 更新发布日期
   */
  setReleaseDate(date: Date | null, updatedBy: string): void {
    this._releaseDate = date;
    this._updatedBy = updatedBy;
    this._updatedAt = new Date();
  }
}