using UnityEngine;
using UnityEngine.UI;
using TMPro;

/// <summary>
/// 实验结束后的结果展示面板。
/// 考核模式：显示加权成绩 + 错题分析列表（含每步得分/满分）。
/// 学习模式：显示注意事项。
/// </summary>
public class ScoreDisplay : MonoBehaviour
{
    [Header("面板根节点")]
    [SerializeField] private GameObject _panelRoot;

    [Header("考核模式")]
    [SerializeField] private GameObject _examResultRoot;
    [SerializeField] private TMP_Text _scoreTitle;
    [SerializeField] private TMP_Text _scoreValue;
    [SerializeField] private Transform _analysisListParent;
    [SerializeField] private GameObject _analysisItemPrefab;

    [Header("学习模式 - 注意事项")]
    [SerializeField] private GameObject _notesRoot;
    [SerializeField] private TMP_Text _notesText;

    [Header("底部按钮")]
    [SerializeField] private Button _confirmButton;

    private static readonly string NotesContent =
        "1. 下肢损伤选择仰卧位；\n" +
        "2. 骨折固定前后要脱掉鞋袜并检查下肢末梢循环、运动、感觉；\n" +
        "3. 穿带子时应从健侧穿向伤侧；\n" +
        "4. 骨折固定时先固定伤口的近心端，后固定远心端，再由上而下进行固定；\n" +
        "5. 固定后尽可能抬高下肢。";

    private void Awake()
    {
        _confirmButton?.onClick.AddListener(OnConfirm);
        if (_panelRoot != null) _panelRoot.SetActive(false);
    }

    /// <summary>考核模式 - 显示加权成绩</summary>
    public void ShowExamScore()
    {
        if (_panelRoot != null) _panelRoot.SetActive(true);
        if (_examResultRoot != null) _examResultRoot.SetActive(true);
        if (_notesRoot != null) _notesRoot.SetActive(false);

        var gm = GameManager.Instance;
        if (gm == null) return;

        int score = gm.GetExamScoreRounded();
        float pct = gm.GetExamPercentage();
        if (_scoreTitle != null) _scoreTitle.text = "成绩显示栏";
        if (_scoreValue != null) _scoreValue.text = $"考试成绩：{score} 分（{pct:F0}%）";

        BuildAnalysisList();
    }

    /// <summary>学习模式 - 显示注意事项</summary>
    public void ShowNotesOnly()
    {
        if (_panelRoot != null) _panelRoot.SetActive(true);
        if (_examResultRoot != null) _examResultRoot.SetActive(false);
        if (_notesRoot != null) _notesRoot.SetActive(true);

        if (_notesText != null) _notesText.text = NotesContent;
    }

    private void BuildAnalysisList()
    {
        if (_analysisListParent == null || _analysisItemPrefab == null) return;

        foreach (Transform child in _analysisListParent)
            Destroy(child.gameObject);

        var gm = GameManager.Instance;
        if (gm == null || gm.StepScores == null) return;

        for (int i = 0; i < gm.StepScores.Length; i++)
        {
            var item = Instantiate(_analysisItemPrefab, _analysisListParent);
            var text = item.GetComponentInChildren<TMP_Text>();
            if (text == null) continue;

            float earned = gm.StepScores[i];
            float max = gm.StepMaxScores[i];
            bool fullScore = Mathf.Approximately(earned, max);
            bool zeroScore = earned <= 0f;

            string status;
            if (fullScore) status = "<color=#00FF00>正确</color>";
            else if (zeroScore) status = "<color=#FF0000>错误</color>";
            else status = $"<color=#FFAA00>部分正确</color>";

            string scorePart = $"（{earned:F0}/{max:F0} 分）";
            string fbPart = (!fullScore && !string.IsNullOrEmpty(gm.StepFeedback[i]))
                ? $"：{gm.StepFeedback[i]}" : "";

            text.text = $"第{i + 1}题：{status} {scorePart}{fbPart}";
        }
    }

    private void OnConfirm()
    {
        if (_panelRoot != null) _panelRoot.SetActive(false);
        UnityEngine.SceneManagement.SceneManager.LoadScene("MainMenu");
    }
}