using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class SongButton : MonoBehaviour
{
    [Header("thisSong_so")]
    public ScriptableObject thisSong_so;
    [Header("展示的信息")]
    public Text songNameText;
    public Text multiNameText;
    public Text joinTime_and_dlcName_Text;
    public Text songOverallDescriptionText;
    public Text highestScoreText;
    public Text difficultyIDText;
    public Text songIDText;
    public Image buttonImage;
    [Header("头图")]
    public Image profileImage;
    public int song_songSerialID;

    public void Start()
    {
    }

    public void SetButtonData(string songName, int highestScore, int difficultyID, Sprite songSprite, int songID)
    {
        Debug.Log("SetButtonData 被调用, songID 参数: " + songID);

        // try to load SongData by id and populate fields from SO when available
        var sd = SongDataLibrary.Instance != null ? SongDataLibrary.Instance.GetSongDataByID(songID) : null;
        if (sd != null)
        {
            // song name
            if (songNameText != null) songNameText.text = sd.songName;

            // multi name text: 音乐：artist | 曲绘：painter | 制谱：level_creator
            if (multiNameText != null)
                multiNameText.text = "音乐：" + sd.artistName + "  |  曲绘：" + sd.painter + "  |  制谱：" + sd.level_creator;

            // song join time and DLC
            if (joinTime_and_dlcName_Text != null)
            {
                string join = string.IsNullOrEmpty(sd.thisLevel_addDateString) ? "未知" : sd.thisLevel_addDateString;
                string dlc = string.IsNullOrEmpty(sd.belongsTo_whichDLC) ? "未归档DLC" : sd.belongsTo_whichDLC;
                joinTime_and_dlcName_Text.text = "歌曲收录时间：" + join + "   |   " + "所属DLC：" + dlc;
            }

            // song overall description
            if (songOverallDescriptionText != null)
            {
                songOverallDescriptionText.text = string.IsNullOrEmpty(sd.thisLevel_overallDescription) ? "暂无歌曲简介。" : sd.thisLevel_overallDescription;
            }

            // compute highest total (chart personal + idol) and its difficulty
            int bestTotal = 0;
            int bestDiff = -1;
            if (sd.personalRecordMap != null)
            {
                foreach (var kvp in sd.personalRecordMap)
                {
                    int diff = kvp.Key;
                    int p = kvp.Value;
                    int i = sd.GetIdolRecord(diff);
                    int combined = p + i;
                    if (combined > bestTotal)
                    {
                        bestTotal = combined;
                        bestDiff = diff;
                    }
                }
            }

            // fallback: use stored personalRecord and selected difficulty if maps empty
            if (bestDiff == -1)
            {
                bestTotal = sd.personalRecord;
                bestDiff = sd.thisLevel_selectedDifficultyID;
            }

            if (highestScoreText != null) highestScoreText.text = bestTotal.ToString();

            // difficultyIDText: show difficultyLEVEL from ChartFileEntry of bestDiff if available, else show numeric id
            string diffDisplay = bestDiff.ToString();
            if (sd.chartFiles != null)
            {
                foreach (var entry in sd.chartFiles)
                {
                    if (entry != null && entry.difficulty == bestDiff)
                    {
                        diffDisplay = entry.difficultyLEVEL.ToString();
                        break;
                    }
                }
            }
            if (difficultyIDText != null) difficultyIDText.text = diffDisplay;

            // button image
            if (buttonImage != null) buttonImage.sprite = sd.backgroudPIC;

            // profile image: use card_profileImage from SO
            if (profileImage != null)
            {
                profileImage.sprite = sd.card_profileImage;
                if (sd.card_profileImage != null)
                {
                    profileImage.color = new Color(profileImage.color.r, profileImage.color.g, profileImage.color.b, 1f);
                    profileImage.enabled = true;
                }
                else
                {
                    // hide if no sprite
                    profileImage.enabled = false;
                }
            }

            song_songSerialID = songID;
            if (songIDText != null) songIDText.text = "数据库索引号：" + song_songSerialID.ToString();
        }
        else
        {
            // fallback to original behavior if SO not found
            if (songNameText != null) songNameText.text = songName;
            if (highestScoreText != null) highestScoreText.text = "PR: " + highestScore.ToString();
            if (difficultyIDText != null) difficultyIDText.text = difficultyID.ToString();
            if (buttonImage != null) buttonImage.sprite = songSprite;
            song_songSerialID = songID;
            if (songIDText != null) songIDText.text = "Song ID: " + song_songSerialID.ToString();
        }
    }

    public void OnSongButtonClick()
    {
        Debug.Log("点击按钮的 song_songSerialID: " + song_songSerialID);
        SongData selectedSong = SongDataLibrary.Instance.GetSongDataByID(song_songSerialID);
        if (selectedSong != null)
        {
            SongDataHolder.SelectedSongData = selectedSong;
            SceneManager.LoadScene("Songs_Select");
        }
        else
        {
            Debug.LogError("未找到对应的 SongData, songID: " + song_songSerialID);
        }
    }
}