// src/types/runtime.ts
export enum NodeStatus {
  PENDING = 'PENDING', // 待执行
  RUNNING = 'RUNNING', // 执行中
  COMPLETED = 'COMPLETED', // 完成
  FAILED = 'FAILED', // 失败
  TIMEOUT = 'TIMEOUT', // 超时
  SKIPPED = 'SKIPPED', // 跳过
  CANCELLED = 'CANCELLED', // 取消
  COMPENSATING = 'COMPENSATING', // 补偿中
  COMPENSATED = 'COMPENSATED', // 补偿完成
}

export interface IWorkflowContext {
  readonly workflowId: string; // 实例 ID
  readonly definitionId: string; // 定义 ID
  readonly definitionName?: string;
  readonly input: Readonly<Record<string, any>>;
  status: NodeStatus;
  variables: Record<string, any>; // 可变状态
  output?: Record<string, any>;
  startTime: Date;
  endTime?: Date;
  history: ReadonlyArray<IExecutionRecord>;
  logs: string[];
  // Optional context from Root/Combined
  tenantId?: string;
  userId?: string;
  userRole?: string;
  traceId?: string;
  // Allows extension
  [key: string]: any;
}

export interface INodeContext {
  readonly workflowContext: IWorkflowContext;
  readonly stepId: string; // 步骤 ID
  readonly nodeId: string; // 节点 ID
  readonly input: Readonly<Record<string, any>>; // 节点输入
  status: NodeStatus; // 节点状态
  output?: Record<string, any>; // 节点输出
  startTime: Date; // 开始时间
  endTime?: Date; // 结束时间
  retries: number; // 当前重试次数
  error?: Error; // 错误
  logs: { timestamp: Date; message: string }[]; // 更多结构化的日志

  // Helper methods potentially
  getVariable<T = any>(name: string): T | undefined;
  setVariable(name:string, value: any): void;
  log(message: string): void;
}

export interface IExecutionRecord {
  stepId: string; // 步骤 ID
  nodeId?: string; // 节点 ID
  status: NodeStatus; // 节点状态
  startTime: Date; // 开始时间
  endTime?: Date; // 结束时间
  input?: Record<string, any>; // 可选: 记录输入
  output?: Record<string, any>; // 可选: 记录输出
  error?: string; // 存储错误消息
  retries?: number; // 重试次数
}