using System;
using System.Collections.Generic;
using TMPro;
using UnityEngine;

namespace BrewMonster.Scripts.Chat.EmotionData
{
    /// <summary>
    /// Snapshot một bộ Emotions{N} (dùng embed trong EmotionLibrarySO hoặc copy sang EmotionSetDataSO).
    /// One Emotions{N} snapshot (embedded in EmotionLibrarySO or copied to EmotionSetDataSO).
    /// </summary>
    [Serializable]
    public class EmotionSetSnapshot
    {
        public int EmotionSetIndex;
        public int CellWidth = 32;
        public int CellHeight = 32;
        public Texture2D SourceAtlas;
        public string SourceTxtAssetPath = "";

        [Tooltip("TMP_SpriteAsset tương ứng với atlas này (cell_0000…). Bắt buộc cho emoji động (nhiều frame). " +
                 "TMP_SpriteAsset matching this atlas (cell_0000…). Required for animated emoji (multi-frame).")]
        public TMP_SpriteAsset TmpSpriteAsset;

        [Tooltip("Bản sao tên asset (khớp TmpSpriteAsset.name) — dùng khi build tag chat từ thread mạng; không được đọc TmpSpriteAsset.name ngoài main thread. " +
                 "Cached asset name (matches TmpSpriteAsset.name) — used when building chat tags from the network thread; never read TmpSpriteAsset.name off the main thread.")]
        public string TmpSpriteAssetName = "";

        public List<EmotionEntryData> Entries = new List<EmotionEntryData>();
    }

    /// <summary>
    /// Một ScriptableObject chứa nhiều bộ emotion (vd. emotions0–emotions7).
    /// Single SO holding multiple emotion sets (e.g. all 8 atlases).
    /// </summary>
    [CreateAssetMenu(fileName = "EmotionLibrary", menuName = "Perfect World/Chat/Emotion Library (All Sets)", order = 1)]
    public class EmotionLibrarySO : ScriptableObject
    {
        [Tooltip("Danh sách các bộ theo EmotionSetIndex (0,1,2,…).")]
        public List<EmotionSetSnapshot> Sets = new List<EmotionSetSnapshot>();

        private void OnValidate()
        {
            SyncCachedTmpSpriteAssetNamesFromObjects();
        }

        /// <summary>
        /// 把各 set 的 TmpSpriteAsset.name 写入 TmpSpriteAssetName（仅应在主线程调用，例如 Awake / OnValidate）。
        /// Writes each set's TmpSpriteAsset.name into TmpSpriteAssetName (call from main thread only, e.g. Awake / OnValidate).
        /// </summary>
        public void SyncCachedTmpSpriteAssetNamesFromObjects()
        {
            if (Sets == null)
                return;
            foreach (EmotionSetSnapshot s in Sets)
            {
                if (s == null)
                    continue;
                s.TmpSpriteAssetName = s.TmpSpriteAsset != null ? s.TmpSpriteAsset.name : string.Empty;
            }
        }

        public EmotionSetSnapshot GetSetOrNull(int emotionSetIndex)
        {
            if (Sets == null) return null;
            foreach (var s in Sets)
            {
                if (s != null && s.EmotionSetIndex == emotionSetIndex)
                    return s;
            }

            return null;
        }
    }
}