using UnityEngine;
using UnityEngine.UI;
using TMPro;

/// <summary>
/// 音量设置面板
/// 提供系统音量调节功能
/// </summary>
public class VolumeSettingPanel : BasePanel
{
    [Header("音量控制")]
    public Slider VolumeSlider;
    public TextMeshProUGUI VolumeText;
    public Button TestSoundButton;
    
    [Header("按钮")]
    public Button HomeButton;
    public Button ConfirmButton;
    public Button BackButton;
    
    private SettingsViewModel _vm;
    private AudioSource _testAudioSource;
    
    public override void Init()
    {
        _vm = new SettingsViewModel();
        
        InitializeUI();
        SetupAudioTest();
    }
    
    private void InitializeUI()
    {
        // 初始化滑块值
        if (VolumeSlider != null) 
        {
            VolumeSlider.minValue = 10;
            VolumeSlider.maxValue = 100;
            VolumeSlider.wholeNumbers = true;
            VolumeSlider.value = Mathf.Clamp(_vm.Volume, 10, 100);
            
            // 监听滑块变化
            VolumeSlider.onValueChanged.AddListener(OnVolumeChanged);
        }
        
        // 初始化文本显示
        int initialVolume = VolumeSlider != null ? (int)VolumeSlider.value : Mathf.Clamp(_vm.Volume, 10, 100);
        UpdateVolumeText(initialVolume);
        SyncMainPanelVolume(initialVolume);
        
        // 按钮事件
        if (HomeButton != null)
        {
            HomeButton.onClick.AddListener(() =>
            {
                ConfirmDialog.Show("确认", "是否返回主界面？", () =>
                {
                    ReturnToHome();
                });
            });
        }
        
        if (ConfirmButton != null)
        {
            ConfirmButton.onClick.AddListener(ApplyAndBack);
        }
        
        if (BackButton != null)
        {
            BackButton.onClick.AddListener(() => 
                ConfirmDialog.Show("确认", "是否返回设置界面？", () =>
                {
                    ClosePanel();
                    ClosePanel();
                })
            );
        }
        
        if (TestSoundButton != null)
        {
            TestSoundButton.onClick.AddListener(PlayTestSound);
        }
    }
    
    private void SetupAudioTest()
    {
        // 创建测试音频源
        var audioGO = new GameObject("TestAudioSource");
        audioGO.transform.SetParent(transform);
        _testAudioSource = audioGO.AddComponent<AudioSource>();
        
        // 加载测试音频clip（如果存在）
        var testClip = Resources.Load<AudioClip>("Audio/DiDi");
        if (testClip != null)
        {
            _testAudioSource.clip = testClip;
        }
        
        _testAudioSource.playOnAwake = false;
    }
    
    private void OnVolumeChanged(float value)
    {
        int volumePercent = (int)value;
        UpdateVolumeText(volumePercent);
        SyncMainPanelVolume(volumePercent);
        
        // 实时更新测试音频源的音量
        if (_testAudioSource != null)
        {
            _testAudioSource.volume = value / 100f;
        }
        
        // 可选：实时应用系统音量（但可能会造成频繁调用）
        // 建议只在确认时应用，这里仅作预览
        // Debug.Log($"VolumeSettingPanel: 音量预览 {volumePercent}%");
    }
    
    private void UpdateVolumeText(int volume)
    {
        if (VolumeText != null)
        {
            VolumeText.text = $"{volume}%";
        }
    }

    private void SyncMainPanelVolume(int volumePercent)
    {
        var mainPanel = UIManager.Instance.GetPanel<MainPanel>();
        if (mainPanel != null)
        {
            mainPanel.UpdateAudioVolume(volumePercent);
        }
    }
    
    private void PlayTestSound()
    {
        if (_testAudioSource != null && _testAudioSource.clip != null)
        {
            _testAudioSource.Play();
        }
        else
        {
            // 如果没有测试音频，创建一个简单的提示音
            Debug.Log($"播放测试音 - 当前音量: {VolumeSlider.value}%");
            
            // 可以在这里集成系统提示音或生成简单音频
        }
    }
    
    private void ApplyAndBack()
    {
        if (VolumeSlider != null) 
        {
            int finalVolume = (int)VolumeSlider.value;
            _vm.Volume = finalVolume;
            SyncMainPanelVolume(finalVolume);
            Debug.Log($"VolumeSettingPanel: 应用音量设置 {finalVolume}%");
        }
        ClosePanel();
    }

    void OnDestroy()
    {
        // 清理音频资源
        if (_testAudioSource != null)
        {
            Destroy(_testAudioSource.gameObject);
        }
    }
}