using UnityEngine;
using UnityEngine.UI;
using TMPro;

public class SongSelectUI : MonoBehaviour
{
    public SongList songList;              // 存储歌曲列表的 ScriptableObject
    public GameObject songButtonPrefab;    // 歌曲按钮的 Prefab (Button)
    public Transform contentPanel;         // 滚动视图的 Content 面板

    void Start()
    {
        if (songList == null || songButtonPrefab == null || contentPanel == null)
        {
            Debug.LogError("请在 Inspector 中分配所有字段！");
            return;
        }

        DisplaySongs();
    }

    // 显示所有歌曲
    void DisplaySongs()
    {
        // 清空现有按钮
        foreach (Transform child in contentPanel)
        {
            Destroy(child.gameObject);
        }

        // 为每首歌曲创建一个按钮
        foreach (SongData song in songList.songs)
        {
            GameObject songButtonObj = Instantiate(songButtonPrefab, contentPanel);
            songButtonObj.transform.SetParent(contentPanel, false); // 确保 UI 结构正确

            // 获取 SongButton 组件
            SongButton songButton = songButtonObj.GetComponent<SongButton>();
            if (songButton != null)
            {
                // 调用 SetButtonData 赋值
                songButton.SetButtonData(song.songName, song.personalRecord, song.difficultyID, song.illustration, song.songID);
                Debug.Log(" SetButtonData 被调用，songID: " + song.songID);
            }
            else
            {
                Debug.LogError(" SongButton 组件未找到！");
            }

            // **获取组件**
            Image songImage = songButtonObj.GetComponentInChildren<Image>(); // 获取图片组件
            TMP_Text[] texts = songButtonObj.GetComponentsInChildren<TMP_Text>();

            if (songImage != null && song.illustration != null)
            {
                songImage.sprite = song.illustration;  // 设置歌曲图片
                songImage.enabled = true;
                Debug.Log(" 设置图片：" + song.songName);
            }
            else
            {
                Debug.LogWarning(" Illustration 为空：" + song.songName);
            }

            if (texts.Length >= 4)
            {
                texts[0].text = song.songName;
                texts[1].text = "Record : " + song.personalRecord;
                texts[3].text = "" + song.difficultyID;
                texts[2].text = "SongID : " + song.songID.ToString();
                Debug.Log(" 设置文本：" + song.songName);
            }
            else
            {
                Debug.LogWarning("TextMeshPro 组件未找到");
            }

            // **添加按钮事件**
            Button button = songButtonObj.GetComponent<Button>();
            button.onClick.AddListener(() => songButton.OnSongButtonClick());
        }
    }


    // 处理点击事件
    void OnSongButtonClicked(SongData song) 
    {

        Debug.Log("🎵 选择歌曲：" + song.songName);
    }
}