using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using Kill.Utils;
using Kill.Managers;
using Kill.Network;
using Kill.UI.Components;

namespace Kill.UI.Pages
{
    public class LoginPageCtrl : MonoBehaviour
    {
        public enum SubPageType
        {
            Login,              // 登录-邮箱输入页
            LoginPassword,      // 登录-密码输入页
            Register,
            VerificationCode,
            SetPassword,
            ThirdPartyBind
        }

        public LoginSubPageBase[] subPages;
        public GameObject PrivacyAgreementTip;
        public GameObject[] PrivacyAgreementPlane;

        private SubPageType currentSubPage = SubPageType.Login;
        private Stack<SubPageType> pageHistory = new Stack<SubPageType>();

        public static LoginPageCtrl Instance { get; private set; }

        private void Awake()
        {
            Instance = this;
            InitializeSubPages();
            foreach(LoginSubPageBase page in subPages)
            {
                if(page.pageType==SubPageType.Login)
                {
                    page.gameObject.SetActive(true);
                }
                else
                {
                     page.gameObject.SetActive(false);
                }
            }
        }

        private void OnEnable()
        {
            ShowSubPage(SubPageType.Login, false);
            RegisterBackEvent();
        }

        private void OnDisable()
        {
            UnregisterBackEvent();
        }

        /// <summary>
        /// 注册返回事件到UIManager
        /// </summary>
        private void RegisterBackEvent()
        {
            if (UIManager.Instance != null)
            {
                UIManager.Instance.RegisterBackAction(OnBackPressed);
            }
        }

        /// <summary>
        /// 取消注册返回事件
        /// </summary>
        private void UnregisterBackEvent()
        {
            if (UIManager.Instance != null)
            {
                UIManager.Instance.ClearBackAction();
            }
        }

        /// <summary>
        /// 返回键处理
        /// </summary>
        private void OnBackPressed()
        {
            // 如果隐私协议提示正在显示，先关闭它
            if (PrivacyAgreementTip != null && PrivacyAgreementTip.activeSelf)
            {
                PrivacyAgreementTip.SetActive(false);
                return;
            }

            // 如果隐私协议面板正在显示，先关闭它
            if (PrivacyAgreementPlane != null)
            {
                foreach (var plane in PrivacyAgreementPlane)
                {
                    if (plane != null && plane.activeSelf)
                    {
                        plane.SetActive(false);
                        return;
                    }
                }
            }

            // 如果当前在登录页，让UIManager处理退出（不注销事件，只是不拦截）
            if (currentSubPage == SubPageType.Login)
            {
                UnregisterBackEvent();
                return;
            }

            // 返回上一页
            GoBack();
        }

        /// <summary>
        /// 初始化所有子页面
        /// </summary>
        private void InitializeSubPages()
        {
            if (subPages == null) return;

            foreach (var page in subPages)
            {
                if (page != null)
                {
                    page.Initialize(this);
                    page.Hide();
                }
            }
        }

        /// <summary>
        /// 显示指定子页面
        /// </summary>
        public void ShowSubPage(SubPageType pageType, bool recordHistory = true)
        {
            if( UIManager.Instance.GetBackAction() == null)
            {
                RegisterBackEvent();
            }
            // 隐藏当前页面
            var currentPage = GetSubPage(currentSubPage);
            if (currentPage != null)
            {
                currentPage.Hide();
            }

            // 记录历史
            if (recordHistory && currentSubPage != pageType)
            {
                pageHistory.Push(currentSubPage);
            }

            // 显示新页面
            var nextPage = GetSubPage(pageType);
            if (nextPage != null)
            {
                nextPage.Show();
            }

            currentSubPage = pageType;
        }

        /// <summary>
        /// 返回上一页
        /// </summary>
        public void GoBack()
        {
            if (pageHistory.Count > 0)
            {
                SubPageType previousPage = pageHistory.Pop();
                ShowSubPage(previousPage, false);
            }
            else
            {
                ShowSubPage(SubPageType.Login, false);
            }
        }

        /// <summary>
        /// 清空历史并跳转到指定页面
        /// </summary>
        public void ClearHistoryAndShow(SubPageType pageType)
        {
            pageHistory.Clear();
            ShowSubPage(pageType, false);
        }

        /// <summary>
        /// 获取子页面控制器
        /// </summary>
        public LoginSubPageBase GetSubPage(SubPageType pageType)
        {
            if (subPages == null) return null;

            foreach (var page in subPages)
            {
                if (page != null && page.PageType == pageType)
                {
                    return page;
                }
            }
            return null;
        }

        /// <summary>
        /// 获取当前页面类型
        /// </summary>
        public SubPageType GetCurrentPageType()
        {
            return currentSubPage;
        }

        private void OnDestroy()
        {
            Instance = null;
        }

        public void ShowPrivacyAgreementTip(Action onAgreementClick)
        {
            PrivacyAgreementTip.SetActive(true);
            PrivacyTipPanel privacyTipPanel = PrivacyAgreementTip.GetComponent<PrivacyTipPanel>();
            privacyTipPanel.Init(onAgreementClick);
        }

        public void ShowPrivacyAgreementPlane()
        {
            var currentLang = LanguageManager.Instance.languageType;
            if (currentLang == LanguageManager.LanguageType.English)
            {
                PrivacyAgreementPlane[1].SetActive(true);
            }
            else
            {
                PrivacyAgreementPlane[0].SetActive(true);
            }
        }

        #region 登录接口

        /// <summary>
        /// 调用登录接口（自定义错误版）
        /// </summary>
        public async void Login(string email, string password, Action<LoginData> onSuccess, Action<int, string> onError)
        {
            await LoginWithError(email, password, onSuccess, onError);
        }

        private async Task LoginWithError(string email, string password, Action<LoginData> onSuccess, Action<int, string> onError)
        {
            var requestData = new LoginRequest
            {
                email = email,
                password = password
            };

            LoadingUI.Show();

            try
            {
                var response = await NetworkCtrl.Instance.Post<LoginResponse>("/api/v1/auth/login", requestData);

                LoadingUI.Hide();

                if(response.Data.code==200)
                {
                    onSuccess?.Invoke(response.Data.data);
                    DataManager.Instance.SetToken(response.Data.data.token,response.Data.data.user);
                }
                else
                {
                    onError?.Invoke(response.Data.code, response.Data.message);
                }
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("登录异常: " + ex.Message);
                onError?.Invoke(-1, "登录异常");
            }
        }
        #endregion

        #region 当前登录邮箱

        private string currentEmail = "";

        /// <summary>
        /// 设置当前登录邮箱
        /// </summary>
        public void SetCurrentEmail(string email)
        {
            currentEmail = email;
        }

        /// <summary>
        /// 获取当前登录邮箱
        /// </summary>
        public string GetCurrentEmail()
        {
            return currentEmail;
        }

        #endregion

        #region 验证邮箱是否已注册

        /// <summary>
        /// 验证邮箱是否已注册（模拟接口）
        /// </summary>
        public async Task CheckEmailRegistered(string email, Action<bool> onSuccess, Action<int, string> onError)
        {
            LoadingUI.Show();

            var requestData = new EmailCodeRequest
            {
                email = email
            };
           
                var response = await NetworkCtrl.Instance.Post<BoolResponse>("/api/v1/auth/email/check", requestData);

                LoadingUI.Hide();

                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log(data.data.registered);
                        // 安全访问，防止 data 或 data.data 为 null
                        bool isRegistered = data?.data?.registered ?? false;
                        onSuccess?.Invoke(isRegistered);
                    },
                    onError: onError
                );
            
           
        }

        #endregion
        #region 发送验证码
       
      
        public async Task SendCode(string email, Action onSuccess)
        {
            LoadingUI.Show();

            var requestData = new EmailCodeRequest
            {
                email = email
            };

            try
            {
                var response = await NetworkCtrl.Instance.Post<NoDataResponse>("/api/v1/auth/email/code", requestData);

                LoadingUI.Hide();

                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log("验证码发送成功");
                        onSuccess?.Invoke();
                    },
                    onError: null
                );
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("发送验证码异常: " + ex.Message);
            }
        }
        #endregion
        #region 校验验证码
       


        /// <summary>
        /// 校验验证码
        /// </summary>
        public async void VerifyCode(string email, string code, Action onSuccess, Action<int, string> onError)
        {
            LoadingUI.Show();

            var requestData = new VerifyCodeRequest
            {
                email = email,
                code = code
            };
            try
            {
                var response = await NetworkCtrl.Instance.Post<NoDataResponse>("/api/v1/auth/email/verify", requestData);

                LoadingUI.Hide();

                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log("验证码校验成功");
                        onSuccess?.Invoke();
                    },
                    onError: onError
                );
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("校验验证码异常: " + ex.Message);
                onError?.Invoke(-1, ex.Message);
            }
        }
        #endregion
        #region 注册账号
        /// <summary>
        /// 注册账号
        /// </summary>
        public async void Register(string email, string password, int password_type, Action onSuccess, Action<int, string> onError)
        {
            LoadingUI.Show();
            var requestData = new RegisterRequest
            {
                email = email,
                password = password,
                password_type = password_type
            };
            try
            {
                var response = await NetworkCtrl.Instance.Post<LoginResponse>("/api/v1/auth/register", requestData);
                LoadingUI.Hide();
                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log("注册成功");
                        onSuccess?.Invoke();
                    },
                    onError: onError
                );
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("注册异常: " + ex.Message);
                onError?.Invoke(-1, ex.Message);
            }
        }
        #endregion

        #region 重置密码
        

        /// <summary>
        /// 重置密码（忘记密码）
        /// </summary>
        public async void ResetPassword(string email, string password, int password_type, Action onSuccess, Action<int, string> onError)
        {
            LoadingUI.Show();
            var requestData = new ResetPasswordRequest
            {
                email = email,
                password = password,
                password_type = password_type
            };
            try
            {
                var response = await NetworkCtrl.Instance.Post<NoDataResponse>("/api/v1/auth/reset-password", requestData);
                LoadingUI.Hide();
                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log("重置密码成功");
                        onSuccess?.Invoke();
                    },
                    onError: onError
                );
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("重置密码异常: " + ex.Message);
                onError?.Invoke(-1, ex.Message);
            }
        }
        #endregion

        #region 第三方账号登录
          /// <summary>
        /// 谷歌登录
        /// </summary>
        public void OnGoogleLogin()
        {
            Debug.Log("开始谷歌登录...");

            LoadingUI.Show();

            FirebaseAuthManager.Instance.SignInWithGoogle(
                onSuccess: (result) =>
                {
                    LoadingUI.Hide();
                    Debug.Log($"谷歌登录成功: {result.DisplayName}, FirebaseID: {result.FirebaseUserId}");
                    FireBaseLogin(result.FirebaseUserId, onSuccess:(response) =>
                    {
                        Debug.Log(response.token);
                        
                    },onError:(code,message)=>
                    {
                        Debug.Log(message);
                    });
                },
                onError: (error) =>
                {
                    LoadingUI.Hide();
                    Debug.LogError($"谷歌登录失败: {error}");
                    ToastUI.Show("100036"); // 登录失败提示
                }
            );
        }
        /// <summary>
        /// Firebase登录
        /// </summary>
        public async void FireBaseLogin(string firebaseUserId, Action<LoginData> onSuccess, Action<int, string> onError)
        {
            LoadingUI.Show();
            var requestData = new FireBaseLoginRequest
            {
                firebase_token = firebaseUserId
            };
            try
            {
                var response = await NetworkCtrl.Instance.Post<LoginResponse>("/api/v1/auth/firebase/login", requestData);
                LoadingUI.Hide();
                ResponseCodeHandler.HandleResponse(response,
                    onSuccess: (data) =>
                    {
                        Debug.Log("Firebase登录成功");
                        onSuccess?.Invoke(response.Data.data);
                    },
                    onError: onError
                );
            }
            catch (Exception ex)
            {
                LoadingUI.Hide();
                Debug.LogError("Firebase登录异常: " + ex.Message);
                onError?.Invoke(-1, ex.Message);
            }
        }
      

       
        #endregion
    }
}