using Godot;
using System;
using System.Collections.Generic;

/// <summary>
/// 玩家数据管理类
/// </summary>
public partial class Player : Node
{
	/// <summary>
	/// 预算类型，用于记录项目预算的不同类别费用。
	/// </summary>
	public class BudgetType
	{
		/// <summary>
		/// 设备费：用于购买设备，升级实验室是指在项目实施过程中购置或试制专用仪
		/// 器设备，对现有仪器设备进行升级改造，以及租赁外单位仪器设备而发生的费
		/// 用。计算类仪器设备和软件工具可在设备费科目列支。应当严格控制设备购
		/// 置，鼓励开放共享、自主研制、租赁专用仪器设备以及对现有仪器设备进行升
		/// 级改造，避免重复购置。
		/// </summary>
		public int Facility { get; set; }
		/// <summary>
		/// 业务费：是指项目实施过程中消耗的各种材料、辅助材料等低值易耗品的采
		/// 购、运输、装卸、整理等费用，发生的测试化验加工、燃料动力、出版/文献/
		/// 信息传播/知识产权事务、会议/差旅/国际合作交流等费用，以及其他相关支
		/// 出。
		/// </summary>
		public int Operational { get; set; }
		/// <summary>
		///劳务费：是指在项目实施过程中支付给参与项目研究的研究生、博士后、访问学
		///者以及项目聘用的研究人员、科研辅助人员等的劳务性费用，以及支付给临时聘
		///请的咨询专家的费用等。
		///</summary>
		public int Labor { get; set; }

		/// <summary>
		/// 总预算
		/// </summary>
		public int Total => Facility + Operational + Labor;
	}

    /// <summary>
    /// 时间轴类型
    /// </summary>
	public class TimelineType
	{
        /// <summary>
        /// 内部日期
        /// </summary>
		public DateOnly InternalDate { get; set; }

		private Dictionary<DateOnly, HashSet<Guid>> _events;

        /// <summary>
        /// 订阅事件
        /// </summary>
        /// <param name="date">日期</param>
        /// <param name="eventUuid">事件UUID</param>
		public void Subscribe(DateOnly date, Guid eventUuid)
		{
			_events ??= new Dictionary<DateOnly, HashSet<Guid>>();
			if (!_events.ContainsKey(date)) _events[date] = new HashSet<Guid>();
			_events[date].Add(eventUuid);
		}

        /// <summary>
        /// 取消订阅事件
        /// </summary>
        /// <param name="date">日期</param>
        /// <param name="eventUuid">事件UUID</param>
		public void Unsubscribe(DateOnly date, Guid eventUuid)
		{
			if (_events == null) return;
			if (!_events.ContainsKey(date)) return;
			_events[date].Remove(eventUuid);
		}

        /// <summary>
        /// 进入下一天
        /// </summary>
		private void NextDay()
		{
			if (_events == null) return;
			_events.Remove(InternalDate);

			InternalDate = InternalDate.AddDays(1);
			OnDayChanged?.Invoke(InternalDate);
			GD.Print("Today is: " + InternalDate.ToString("yyyy-MM-dd"));

			if (_events.ContainsKey(InternalDate))
			{
				var events = _events[InternalDate];
				foreach (var eventUuid in events)
				{
					// TODO: Trigger event
					OnEventTriggered?.Invoke(InternalDate, eventUuid);
					GD.Print("event triggered! eventUUID: " + eventUuid.ToString());
				}
			}
		}

        /// <summary>
        /// 附加计时器
        /// </summary>
        /// <param name="ticker">计时器</param>
		public void Attach(Timer ticker)
		{
			ticker.Timeout += NextDay;
		}

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="startDate">开始日期</param>
		public TimelineType(DateOnly startDate)
		{
			InternalDate = startDate;
		}

        /// <summary>
        /// 事件触发委托
        /// </summary>
		public delegate void EventTriggeredEventHandler(DateOnly date, Guid eventUuid);

        /// <summary>
        /// 事件触发事件
        /// </summary>
		public event EventTriggeredEventHandler OnEventTriggered;

        /// <summary>
        /// 日期变更委托
        /// </summary>
		public delegate void DayChangedEventHandler(DateOnly date);

        /// <summary>
        /// 日期变更事件
        /// </summary>
		public event DayChangedEventHandler OnDayChanged;

	}

    /// <summary>
    /// 预算实例
    /// </summary>
	public static BudgetType Budget { get; set; } = new();
    /// <summary>
    /// 时间轴实例
    /// </summary>
	public static readonly TimelineType Timeline = new(DateOnly.Parse("2024/11/17"));

	/// <summary>
	/// 名字
	/// </summary>
	public static string PlayerName { get; set; }

	/// <summary>
	/// 年龄
	/// </summary>
	public static uint Age { get; set; }

	/// <summary>
	/// 日期
	/// </summary>
	public static DateOnly Date { get; set; }

	// Called when the node enters the scene tree for the first time.
    /// <summary>
    /// 场景加载完成时调用
    /// </summary>
	public override void _Ready()
	{

	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
    /// <summary>
    /// 每帧更新
    /// </summary>
    /// <param name="delta">帧间隔</param>
	public override void _Process(double delta)
	{
	}
}