using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using Kill.Bluetooth;
using Kill.Bluetooth.Protocol;
using Kill.Core;
using Kill.Managers;
using Kill.Network;
using Kill.UI.Components;
using UnityEngine;
using UnityEngine.UI;

namespace Kill.UI.Pages
{
    public class LensSettingPage : MonoBehaviour
    {
        public Text lensText;
        public Image lensIcon;
        public RectTransform lensIconRectTransform;

        /// <summary>
        /// 可见激光开关 0关 1开
        /// </summary>
        public Button vllButton;
        /// <summary>
        /// 可见激光开关图标 0关 1开
        /// </summary>
        public Sprite[] vllButtonSprites;
        public Button confirmButton;
        public Button cancelButton;
        public Button switchUnitButton;
        /// <summary>
        /// 0 米未选中 1 米已选中 2 英尺未选中 3 英尺已选中
        /// </summary>
        public GameObject[] unitStateIcons;
        /// <summary>
        /// 0 米 1 英尺
        /// </summary>
        private int nowUnit = 0;

        // 当前设置值
        private float currentLensValue = 3f;      // 当前距离(m)
        private float selectedLensValue = 3f;     // 选中的距离(m)
        private bool vllEnabled = false;          // 可见激光开关状态

        // 进入设置前的原始值（用于取消恢复）
        private float originalLensValue = 3f;     // 原始距离(m)
        private bool originalVllEnabled = false;  // 原始可见激光状态

        /// <summary>
        /// 0米选择器 1英尺选择器
        /// </summary>
        public SlideSelector[] slideSelectors;

        // 静态标志：是否有设置页面正在处理回调
        private static bool _isSettingPageActive = false;

        // 常量定义
        private const float MIN_LENS_Y = 231f;    // 最小Y值对应2m
        private const float MAX_LENS_Y = 281f;    // 最大Y值对应6m
        private const float MIN_LENS_VALUE = 2f;  // 最小距离2m
        private const float MAX_LENS_VALUE = 6f;  // 最大距离6m

        void Start()
        {
            // 绑定按钮点击事件
            BindButtonEvents();
            nowUnit = DataManager.Instance.userInfo.unit_system;
            InitLensSettingPage();
        }

        /// <summary>
        /// 绑定按钮点击事件
        /// </summary>
        private void BindButtonEvents()
        {
            // 绑定可见激光开关按钮
            if (vllButton != null)
            {
                vllButton.onClick.RemoveAllListeners();
                vllButton.onClick.AddListener(OnVllButtonClick);
            }

            // 绑定确认按钮
            if (confirmButton != null)
            {
                confirmButton.onClick.RemoveAllListeners();
                confirmButton.onClick.AddListener(OnConfirmButtonClick);
            }

            // 绑定取消按钮
            if (cancelButton != null)
            {
                cancelButton.onClick.RemoveAllListeners();
                cancelButton.onClick.AddListener(OnCancelButtonClick);
            }

            // 绑定切换单位按钮
            if (switchUnitButton != null)
            {
                switchUnitButton.onClick.RemoveAllListeners();
                switchUnitButton.onClick.AddListener(OnSwitchUnitButtonClick);
            }

            // 绑定滑动选择器事件
            if (slideSelectors != null && slideSelectors.Length >= 2)
            {
                if (slideSelectors[0] != null)
                {
                    slideSelectors[0].OnValueChanged -= OnLensValueChanged;
                    slideSelectors[0].OnValueChanged += OnLensValueChanged;
                    slideSelectors[0].OnValueSelected -= OnLensValueSelected;
                    slideSelectors[0].OnValueSelected += OnLensValueSelected;
                }
                if (slideSelectors[1] != null)
                {
                    slideSelectors[1].OnValueChanged -= OnLensValueChanged;
                    slideSelectors[1].OnValueChanged += OnLensValueChanged;
                    slideSelectors[1].OnValueSelected -= OnLensValueSelected;
                    slideSelectors[1].OnValueSelected += OnLensValueSelected;
                }
            }
        }

        /// <summary>
        /// 初始化Lens设置页面
        /// </summary>
        public void InitLensSettingPage()
        {
            Debug.Log("[LensSettingPage] 初始化Lens设置页面");

            // 注册蓝牙回调（顶替主页）
            RegisterBluetoothCallbacks();

            // 更新单位显示
            UpdateUnitUI();

            // 读取当前距离控制和可见激光设置
            ReadLensAndVllSettings();
        }

        /// <summary>
        /// 注册蓝牙回调（顶替主页）
        /// </summary>
        private void RegisterBluetoothCallbacks()
        {
            if (BLECommunicationManager.Instance != null)
            {
                // 设置标志位，表示设置页面正在处理
                _isSettingPageActive = true;

                // 订阅事件
                BLECommunicationManager.Instance.OnDistanceControlReceived += OnDistanceControlReceived;
                BLECommunicationManager.Instance.OnVisibleLaserControlReceived += OnVisibleLaserControlReceived;

                Debug.Log("[LensSettingPage] 蓝牙回调已注册");
            }
        }

        /// <summary>
        /// 注销蓝牙回调（恢复主页）
        /// </summary>
        private void UnregisterBluetoothCallbacks()
        {
            if (BLECommunicationManager.Instance != null)
            {
                // 取消订阅事件
                BLECommunicationManager.Instance.OnDistanceControlReceived -= OnDistanceControlReceived;
                BLECommunicationManager.Instance.OnVisibleLaserControlReceived -= OnVisibleLaserControlReceived;

                // 清除标志位
                _isSettingPageActive = false;

                Debug.Log("[LensSettingPage] 蓝牙回调已注销");
            }
        }

        /// <summary>
        /// 距离控制接收回调
        /// </summary>
        private void OnDistanceControlReceived(DistanceControl control)
        {
            Loom.QueueOnMainThread(() =>
            {
                // 只有当前设置页面激活时才处理
                if (!_isSettingPageActive) return;

                // 使用AimDistance作为lens值，单位是0.1米
                currentLensValue = control.AimDistance*0.1f;
                selectedLensValue = currentLensValue;
                originalLensValue = currentLensValue;

                Debug.Log($"[LensSettingPage] 读取距离控制: {currentLensValue}m");
                BLECommunicationManager.Instance?.ReadVisibleLaserControl();
            });
        }

        /// <summary>
        /// 可见激光控制接收回调
        /// </summary>
        private void OnVisibleLaserControlReceived(VisibleLaserControl control)
        {
            Loom.QueueOnMainThread(() =>
            {
                // 只有当前设置页面激活时才处理
                if (!_isSettingPageActive) return;

                LoadingUI.Hide();

                // 获取可见激光开关状态
                vllEnabled = control.Enable;
                originalVllEnabled = vllEnabled;

                Debug.Log($"[LensSettingPage] 读取可见激光: {vllEnabled}");

                // 更新UI显示
                UpdateUI();
            });
        }

        /// <summary>
        /// 检查是否有设置页面正在处理回调
        /// </summary>
        public static bool IsSettingPageActive()
        {
            return _isSettingPageActive;
        }

        /// <summary>
        /// 读取距离控制和可见激光设置
        /// </summary>
        private void ReadLensAndVllSettings()
        {
            if (DataManager.Instance.hasWifi && !DataManager.Instance.hasBluetooth)
            {
                LoadSettingsFromConfig();
                return;
            }

            // 显示Loading
            LoadingUI.Show();

            // 先读取距离控制
            BLECommunicationManager.Instance?.ReadDistanceControl();

       
        }

        private void LoadSettingsFromConfig()
        {
            var config = DataManager.Instance.deviceConfig;
            currentLensValue = (config?.detection_distance ?? 0) * 0.1f;
            selectedLensValue = currentLensValue;
            originalLensValue = currentLensValue;
            vllEnabled = config?.laser_visible_enable ?? false;
            originalVllEnabled = vllEnabled;
            UpdateUI();
        }

        /// <summary>
        /// 更新UI显示
        /// </summary>
        private void UpdateUI()
        {
            // 更新距离文本
            UpdateLensText();

            // 更新lens图标位置
            UpdateLensIconPosition();

            // 更新可见激光开关图标
            UpdateVllButton();

            // 更新选择器值
            UpdateSlideSelectorValue();
        }

        /// <summary>
        /// 更新距离文本显示
        /// </summary>
        private void UpdateLensText()
        {
            if (lensText == null) return;

            if (nowUnit == 0)
            {
                // 米
                lensText.text = $"{selectedLensValue:F1}m";
            }
            else
            {
                // 英尺 (1m = 3.28084ft)
                int feet = Mathf.RoundToInt(selectedLensValue * 3.28084f);
                lensText.text = $"{feet}ft";
            }
        }

        /// <summary>
        /// 更新lens图标位置
        /// </summary>
        private void UpdateLensIconPosition()
        {
            if (lensIconRectTransform == null) return;

            // 将距离值(2-6)映射到Y坐标(231-281)
            float t = (selectedLensValue - MIN_LENS_VALUE) / (MAX_LENS_VALUE - MIN_LENS_VALUE);
            float yPos = Mathf.Lerp(MIN_LENS_Y, MAX_LENS_Y, t);

            Vector2 sizeDelta = lensIconRectTransform.sizeDelta;
            sizeDelta.y = yPos;
            lensIconRectTransform.sizeDelta = sizeDelta;
        }

        /// <summary>
        /// 更新滑动选择器的值
        /// </summary>
        private void UpdateSlideSelectorValue()
        {
            if (slideSelectors == null || slideSelectors.Length < 2) return;

            // 根据当前单位显示对应的选择器
            if (nowUnit == 0)
            {
                // 米选择器
                if (slideSelectors[0] != null)
                {
                    slideSelectors[0].gameObject.SetActive(true);
                    slideSelectors[0].DefaultValue = selectedLensValue;
                    slideSelectors[0].Initialize();
                }
                if (slideSelectors[1] != null)
                {
                    slideSelectors[1].gameObject.SetActive(false);
                }
            }
            else
            {
                // 英尺选择器
                if (slideSelectors[0] != null)
                {
                    slideSelectors[0].gameObject.SetActive(false);
                }
                if (slideSelectors[1] != null)
                {
                    slideSelectors[1].gameObject.SetActive(true);
                    // 将米转换为英尺显示
                    int feet = Mathf.RoundToInt(selectedLensValue * 3.28084f);
                    slideSelectors[1].DefaultValue = feet;
                    slideSelectors[1].Initialize();
                }
            }
        }

        /// <summary>
        /// 更新单位UI显示
        /// </summary>
        private void UpdateUnitUI()
        {
            if (unitStateIcons == null || unitStateIcons.Length < 4) return;

            // 0 米未选中 1 米已选中 2 英尺未选中 3 英尺已选中
            for (int i = 0; i < unitStateIcons.Length; i++)
            {
                if (unitStateIcons[i] != null)
                {
                    unitStateIcons[i].SetActive(false);
                }
            }

            if (nowUnit == 0)
            {
                // 米选中
                if (unitStateIcons[1] != null) unitStateIcons[1].SetActive(true);
                if (unitStateIcons[2] != null) unitStateIcons[2].SetActive(true);
            }
            else
            {
                // 英尺选中
                if (unitStateIcons[3] != null) unitStateIcons[3].SetActive(true);
                if (unitStateIcons[0] != null) unitStateIcons[0].SetActive(true);
            }
        }

        /// <summary>
        /// 更新可见激光开关按钮
        /// </summary>
        private void UpdateVllButton()
        {
            if (vllButton == null || vllButtonSprites == null || vllButtonSprites.Length < 2)
                return;

            Image buttonImage = vllButton.GetComponent<Image>();
            if (buttonImage != null)
            {
                buttonImage.sprite = vllEnabled ? vllButtonSprites[1] : vllButtonSprites[0];
            }
        }

        /// <summary>
        /// 滑动选择器值改变回调（滑动过程中实时更新）
        /// </summary>
        private void OnLensValueChanged(float value)
        {
            // 根据当前单位转换值
            if (nowUnit == 0)
            {
                // 米
                selectedLensValue = value;
            }
            else
            {
                // 英尺转米
                selectedLensValue = value / 3.28084f;
            }

            // 限制范围
            selectedLensValue = Mathf.Clamp(selectedLensValue, MIN_LENS_VALUE, MAX_LENS_VALUE);

            // 实时更新UI
            UpdateLensText();
            UpdateLensIconPosition();
        }

        /// <summary>
        /// 滑动选择器选中值回调（滑动结束后）
        /// </summary>
        private async void OnLensValueSelected(float value)
        {
            Debug.Log($"[LensSettingPage] 选中距离值: {value}");

            // 发送距离设置到设备
            await SendLensSettingToDeviceAsync();
        }

        private async Task SendLensSettingToDeviceAsync()
        {
            // 设置检测距离和瞄准距离为同一个值
            ushort distanceValue = (ushort)Mathf.RoundToInt(selectedLensValue*10);
            DistanceControl distanceControl = new DistanceControl
            {
                DetectionDistance = distanceValue,
                AimDistance = distanceValue // 单位是0.1米
            };

            if (DataManager.Instance.hasWifi && !DataManager.Instance.hasBluetooth)
            {
                bool success = await HomePageCtrl.Instance.SendBleCommandByWifiAsync(
                    BLEConstants.CMD_DISTANCE_CONTROL, distanceControl.ToBytes());
                if (success)
                {
                    Debug.Log($"[LensSettingPage] 距离设置成功: {selectedLensValue}m");
                    currentLensValue = selectedLensValue;
                    DataManager.Instance.deviceConfig.detection_distance = (int)(selectedLensValue * 10);
                }
                else
                {
                    Debug.LogError("[LensSettingPage] 距离设置失败");
                    selectedLensValue = currentLensValue;
                    UpdateUI();
                }
            }
            else
            {
                BLECommunicationManager.Instance?.WriteDistanceControl(distanceControl, (success) =>
            {
                Loom.QueueOnMainThread(() =>
                {
                    if (success)
                    {
                        Debug.Log($"[LensSettingPage] 距离设置成功: {selectedLensValue}m");
                        currentLensValue = selectedLensValue;
                        DataManager.Instance.deviceConfig.detection_distance = (int)(selectedLensValue * 10);
                    }
                    else
                    {
                        Debug.LogError("[LensSettingPage] 距离设置失败");
                        // 设置失败，恢复UI显示
                        selectedLensValue = currentLensValue;
                        UpdateUI();
                    }
                });
            });
            }
        }

        /// <summary>
        /// 可见激光开关按钮点击事件
        /// </summary>
        private async void OnVllButtonClick()
        {
            bool newVllState = !vllEnabled;
            Debug.Log($"[LensSettingPage] 可见激光开关: {(newVllState ? "开" : "关")}");

            // 发送可见激光设置到设备
            VisibleLaserControl vllControl = new VisibleLaserControl
            {
                Enable = newVllState
            };

            if (DataManager.Instance.hasWifi && !DataManager.Instance.hasBluetooth)
            {
                bool success = await HomePageCtrl.Instance.SendBleCommandByWifiAsync(
                    BLEConstants.CMD_VISIBLE_LASER_CONTROL, vllControl.ToBytes());
                if (success)
                {
                    Debug.Log($"[LensSettingPage] 可见激光设置成功: {(newVllState ? "开" : "关")}");
                    vllEnabled = newVllState;
                    UpdateVllButton();
                    DataManager.Instance.deviceConfig.laser_visible_enable = newVllState;
                }
                else
                {
                    Debug.LogError("[LensSettingPage] 可见激光设置失败");
                }
            }
            else
            {
                BLECommunicationManager.Instance?.WriteVisibleLaserControl(vllControl, (success) =>
            {
                Loom.QueueOnMainThread(() =>
                {
                    if (success)
                    {
                        Debug.Log($"[LensSettingPage] 可见激光设置成功: {(newVllState ? "开" : "关")}");
                        vllEnabled = newVllState;
                        UpdateVllButton();
                        DataManager.Instance.deviceConfig.laser_visible_enable = newVllState;
                    }
                    else
                    {
                        Debug.LogError("[LensSettingPage] 可见激光设置失败");
                    }
                });
            });
            }
        }

        /// <summary>
        /// 切换单位按钮点击事件
        /// </summary>
        private void OnSwitchUnitButtonClick()
        {
            // 切换单位
            nowUnit = (nowUnit == 0) ? 1 : 0;

            // 保存单位设置
            DataManager.Instance.userInfo.unit_system = nowUnit;

            // 更新UI
            UpdateUnitUI();
            UpdateLensText();
            UpdateSlideSelectorValue();

            Debug.Log($"[LensSettingPage] 切换单位: {(nowUnit == 0 ? "米" : "英尺")}");
        }

        /// <summary>
        /// 确认按钮点击事件
        /// </summary>
        private async void OnConfirmButtonClick()
        {
            Debug.Log($"[LensSettingPage] 确认设置，当前距离={selectedLensValue}m");

            // 同步单位设置到服务器
            await UpdateUnitSystemToServer();

            // 通知主页刷新
            NotifyHomePageRefresh();

            // 关闭页面
            ClosePage();
        }

        /// <summary>
        /// 同步单位设置到服务器
        /// </summary>
        private async Task UpdateUnitSystemToServer()
        {
            int unitSystem = DataManager.Instance.userInfo.unit_system;
            Debug.Log($"[LensSettingPage] 同步单位设置到服务器: {unitSystem}");

            try
            {
                var request = new UnitRequest
                {
                    unit_system = unitSystem
                };
                var response = await NetworkCtrl.Instance.Put<NoDataResponse>("/api/v1/user/unit-system", request);
                ResponseCodeHandler.HandleResponse(response,
                     onSuccess: (data) =>
                     {
                         Debug.Log(data.code);
                         if (data.code == 200)
                         {
                             Debug.Log("[LensSettingPage] 单位设置同步成功");
                         }
                         else
                         {
                             Debug.LogError($"[LensSettingPage] 单位设置同步失败: {data.code}");
                         }
                     }
                 );
            }
            catch (System.Exception ex)
            {
                Debug.LogError($"[LensSettingPage] 单位设置同步异常: {ex.Message}");
            }
        }

        /// <summary>
        /// 取消按钮点击事件 - 恢复原始数值
        /// </summary>
        public async void OnCancelButtonClick()
        {
            Debug.Log("[LensSettingPage] 取消设置，恢复原始数值");

            // 如果数值没有变化，直接关闭页面
            if (Mathf.Abs(selectedLensValue - originalLensValue) < 0.01f)
            {
                Debug.Log("[LensSettingPage] 数值未变化，直接关闭页面");
                NotifyHomePageRefresh();
                ClosePage();
                return;
            }

            // 显示Loading
            LoadingUI.Show();

            // 恢复原始距离值（检测距离和瞄准距离同时恢复）
            ushort originalValue = (ushort)Mathf.RoundToInt(originalLensValue*10);
            DistanceControl distanceControl = new DistanceControl
            {
                DetectionDistance = originalValue,
                AimDistance = originalValue
            };

            if (DataManager.Instance.hasWifi && !DataManager.Instance.hasBluetooth)
            {
                bool success = await HomePageCtrl.Instance.SendBleCommandByWifiAsync(
                    BLEConstants.CMD_DISTANCE_CONTROL, distanceControl.ToBytes());
                if (success)
                {
                    Debug.Log($"[LensSettingPage] 距离恢复成功: {originalLensValue}m");
                    currentLensValue = originalLensValue;
                    selectedLensValue = originalLensValue;
                    DataManager.Instance.deviceConfig.detection_distance = (ushort)Mathf.RoundToInt(originalLensValue * 10);
                }
                else
                {
                    Debug.LogError("[LensSettingPage] 距离恢复失败");
                }
                NotifyHomePageRefresh();
                ClosePage();
            }
            else
            {
                BLECommunicationManager.Instance?.WriteDistanceControl(distanceControl, (success) =>
            {
                Loom.QueueOnMainThread(() =>
                {
                    LoadingUI.Hide();

                    if (success)
                    {
                        Debug.Log($"[LensSettingPage] 距离恢复成功: {originalLensValue}m");
                        currentLensValue = originalLensValue;
                        selectedLensValue = originalLensValue;
                        DataManager.Instance.deviceConfig.detection_distance = (ushort)Mathf.RoundToInt(originalLensValue * 10);
                    }
                    else
                    {
                        Debug.LogError("[LensSettingPage] 距离恢复失败");
                    }

                    // 通知主页刷新
                    NotifyHomePageRefresh();

                    // 关闭页面
                    ClosePage();
                });
            });
            }

        }

      

        /// <summary>
        /// 通知主页刷新
        /// </summary>
        private void NotifyHomePageRefresh()
        {
            // 通知主页刷新距离显示
            HomePageCtrl.Instance?.RefreshLensControl();
        }

        /// <summary>
        /// 关闭页面
        /// </summary>
        private void ClosePage()
        {
            LoadingUI.Hide();
            // 注销蓝牙回调（恢复主页）
            UnregisterBluetoothCallbacks();

            // 通知主页刷新
            NotifyHomePageRefresh();

            Destroy(gameObject);

            // 清除UIManager返回事件
            UIManager.Instance?.ClearBackAction();
        }
    }
}