using System;
using System.Collections.Generic;

namespace Models;

/// <summary>
/// Unit 组件集合（组合优于继承）
/// 设计说明：
/// 1) UnitModel 只是“组件容器”，具体能力拆分到小组件中，便于复用与替换。
/// 2) 组件保持低内聚小职责，避免“巨型基类”造成的隐式耦合。
/// 3) 这些组件只描述数据，不包含具体行为，行为交给系统/控制器层。
/// 注意事项：
/// - 不引用 Godot 类型，保持纯数据层，利于测试与序列化。
/// - 标识/标签使用 string Id，方便 Mod 扩展新增内容。
/// 未来扩展：
/// - 可以给组件增加“快照/脏标记”，用于高效 UI 刷新。
/// - 需要网络联机时，可在这里加入序列化版本号。
/// </summary>
public static class UnitComponents
{
    /// <summary>
    /// 网格位置组件
    /// </summary>
	public readonly struct GridPosition
	{
		public int X { get; }
		public int Y { get; }

		public GridPosition(int x, int y)
		{
			X = x;
			Y = y;
		}

		public static GridPosition Zero => new(0, 0);
	}

    /// <summary>
    /// 单位身份组件
    /// </summary>
	public sealed class UnitIdentity
	{
		public Guid Id { get; } = Guid.NewGuid();
		public string Name { get; set; }
		public string NameKey { get; set; }

		public UnitIdentity(string name, string nameKey = null)
		{
			Name = name;
			NameKey = nameKey;
		}
	}

    /// <summary>
    /// 单位属性组件
    /// </summary>
	public sealed class UnitAttributes
	{
		public PropertyValue Academic { get; set; }
		public PropertyValue Engineering { get; set; }
		public PropertyValue Writing { get; set; }
		public PropertyValue Financial { get; set; }
		public PropertyValue Social { get; set; }
		public PropertyValue Activation { get; set; }

		public UnitAttributes(Random random = null)
		{
			var rng = random ?? Random.Shared;
			Academic = new PropertyValue(rng.Next(0, 100));
			Engineering = new PropertyValue(rng.Next(0, 100));
			Writing = new PropertyValue(rng.Next(0, 100));
			Financial = new PropertyValue(rng.Next(0, 100));
			Social = new PropertyValue(rng.Next(0, 100));
			Activation = new PropertyValue(rng.Next(0, 100));
		}
	}

    /// <summary>
    /// 单位状态组件
    /// </summary>
	public sealed class UnitStatuses
	{
		public StatusValue Stress { get; set; }
		public StatusValue Sanity { get; set; }
		public PropertyValue Mood { get; set; }
		public PropertyValue MoveSpeed { get; set; }

		public UnitStatuses()
		{
			Stress = new StatusValue(0, 100, 0);
			Sanity = new StatusValue(100, 100, 0);
			Mood = new PropertyValue(50);
			MoveSpeed = new PropertyValue(50, 0, 200);
		}
	}

    /// <summary>
    /// 单位标签组件
    /// </summary>
	public sealed class UnitTags
	{
		public string DisciplineId { get; set; }
		public List<string> ArchetypeIds { get; } = new();
		public List<string> RoleIds { get; } = new();
		public List<string> TraitIds { get; } = new();

		public bool HasTrait(string traitId) => TraitIds.Contains(traitId);
	}

    /// <summary>
    /// 单位指派组件
    /// </summary>
	public sealed class UnitAssignment
	{
		public Guid? CurrentTaskId { get; set; }
	}

    /// <summary>
    /// 单位位置组件
    /// </summary>
	public sealed class UnitPlacement
	{
		public GridPosition Current { get; set; } = GridPosition.Zero;
		public GridPosition Target { get; set; } = GridPosition.Zero;
	}

    /// <summary>
    /// 单位装备组件
    /// </summary>
	public sealed class UnitEquipment
	{
		public List<string> EquippedItemIds { get; } = new();
	}
}