using System;
using System.Collections.Generic;

namespace AI.Workflow
{
    /// <summary>
    /// 规划结果
    /// </summary>
    public class Plan
    {
        /// <summary>
        /// 规划唯一标识符
        /// </summary>
        public string Id { get; set; } = Guid.NewGuid().ToString();

        /// <summary>
        /// 规划目标
        /// </summary>
        public string Goal { get; set; } = string.Empty;

        /// <summary>
        /// 规划步骤列表
        /// </summary>
        public List<PlanStep> Steps { get; } = new List<PlanStep>();

        /// <summary>
        /// 创建时间
        /// </summary>
        public DateTime CreatedAt { get; set; } = DateTime.Now;
    }

    /// <summary>
    /// 规划步骤
    /// </summary>
    public class PlanStep
    {
        /// <summary>
        /// 步骤唯一标识符
        /// </summary>
        public string Id { get; set; } = Guid.NewGuid().ToString();

        /// <summary>
        /// 步骤序号
        /// </summary>
        public int Order { get; set; }

        /// <summary>
        /// 步骤描述
        /// </summary>
        public string Description { get; set; } = string.Empty;

        /// <summary>
        /// 步骤状态
        /// </summary>
        public PlanStepStatus Status { get; set; } = PlanStepStatus.Pending;

        /// <summary>
        /// 执行结果
        /// </summary>
        public string? Result { get; set; }

        /// <summary>
        /// 错误信息
        /// </summary>
        public string? ErrorMessage { get; set; }

        /// <summary>
        /// 开始执行时间
        /// </summary>
        public DateTime? StartedAt { get; set; }

        /// <summary>
        /// 完成时间
        /// </summary>
        public DateTime? CompletedAt { get; set; }
    }

    /// <summary>
    /// 规划步骤状态
    /// </summary>
    public enum PlanStepStatus
    {
        /// <summary>
        /// 待执行
        /// </summary>
        Pending,

        /// <summary>
        /// 执行中
        /// </summary>
        Running,

        /// <summary>
        /// 已完成
        /// </summary>
        Completed,

        /// <summary>
        /// 执行失败
        /// </summary>
        Failed
    }
}