using System;
using System.Collections.Generic;
using UnityEngine;
using Yarn.Unity;

namespace AibisDream
{
    [Serializable]
    public class SceneExit
    {
        [Tooltip("出口名称，用于Yarn命令指定跳转目标，如 good_end / bad_end / default")]
        public string exitName;

        public TalkSceneSO targetScene;
    }

    /// <summary>
    /// 章节类型数据
    /// </summary>
    [CreateAssetMenu(menuName = AibisAssetMenus.NarrativeTalkScene)]
    public class TalkSceneSO : ScriptableObject
    {
        private const string DEFAULT_EXIT_NAME = "default";

        public List<SceneExit> exits = new();

        public YarnProject yarnProject;

        public string firstSceneName;

        #region 用于显示的字段

        public string title;

        [Tooltip("章节面板显示用本地化 Key，对应 ChapterInfo 表条目；为空则回退 title")]
        public string titleKey;

        public string description;
        public Sprite coverPic;
        public string chapter;

        #endregion

        #region 仅编辑器使用

        [HideInInspector] public Vector2 graphPosition;
        public Color nodeColor = new(0.85f, 0.45f, 0.45f);

        #endregion

        public TalkSceneSO GetNextScene(string exitName = null)
        {
            if (exits == null || exits.Count == 0)
                return null;

            if (string.IsNullOrEmpty(exitName))
                exitName = DEFAULT_EXIT_NAME;

            foreach (var exit in exits)
            {
                if (exit.exitName == exitName)
                    return exit.targetScene;
            }

            return null;
        }
    }
}