import 'dart:convert';

import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:go_router/go_router.dart';
import 'package:http/http.dart' as http;
import 'package:nhance_app_pwa/pages/service/SessionManager.dart';
import 'dart:io';
import 'package:google_fonts/google_fonts.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../config/environment.dart';
import '../customAppBar/responsive.dart';
import '../customAppBar/toastHelper.dart';

import 'package:nhance_app_pwa/logger.dart';

class setPassword extends StatefulWidget {
  final String email;
  final String client_id;
  final String route;
  const setPassword({
    super.key,
    required this.email,
    required this.client_id,
    required this.route,
  });

  @override
  State<setPassword> createState() => _setPasswordState();
}

class _setPasswordState extends State<setPassword> {
  final TextEditingController newPasswordController = TextEditingController();
  final TextEditingController confirmPasswordController = TextEditingController();
  final _formKey = GlobalKey<FormState>();
  dynamic _preToken;
  dynamic _postToken;
  dynamic clientName;
  dynamic clientLogo;
  bool _isLoading = false;
  bool _obscureNewPassword = true;
  bool _obscureConfirmPassword = true;
  late SessionManager session;
  bool hasMinLength = false;
  bool hasUpperLower = false;
  bool hasNumber = false;
  bool hasSpecialChar = false;
  bool get isPasswordValid => hasMinLength && hasUpperLower && hasNumber && hasSpecialChar;

  @override
  void initState() {
    super.initState();
  }

  void validatePassword(String password) {
    setState(() {
      hasMinLength = password.length >= 8;
      hasUpperLower = RegExp(r'(?=.*[A-Za-z])').hasMatch(password);
      hasNumber = RegExp(r'(?=.*\d)').hasMatch(password);
      hasSpecialChar = RegExp(r'(?=.*[@$!%*#?&])').hasMatch(password);
    });
  }

  Future<void> resetYourPassword() async {
    final newPassword = newPasswordController.text.trim();
    final confirmPassword = confirmPasswordController.text.trim();
    try {
      if (_formKey.currentState!.validate()) {
        final strongPasswordRegex =
            RegExp(r'^(?=.*[A-Za-z])(?=.*\d)(?=.*[@$!%*#?&]).{8,}$');
        if (!strongPasswordRegex.hasMatch(newPassword)) {
          ToastHelper.showErrorToast(
              context,
              'Enter a valid password (8+ chars with letter, number, special char)');
          return;
        }
        if (confirmPassword != newPassword) {
          ToastHelper.showErrorToast(context, 'Passwords do not match');
          return;
        }
        setState(() {
          _isLoading = true;
        });

        // Determine the API and the payload based on the visible field
        String apiEndpoint = Environment.apiUrlEnrollment + 'savePassword';
        Map<String, dynamic> payload = {
          'email_id': widget.email,
          'client_id': widget.client_id,
          'password': newPassword,
          'confirm_password': confirmPassword
        };

        // var enteredMobileNumber = mobileController.text;
        final response = await http.post(
          Uri.parse(apiEndpoint),
          body: json.encode(payload),
          headers: {
            HttpHeaders.contentTypeHeader: 'application/json',
            'APP-SIGNATURE': 'nhance-2025-signature-T8f6gV9k5fK2wf5V5c4vId3b0J8z6cAm2x8Y',
          },
        );

        if (response.statusCode == 200) {
          Map<String, dynamic> data = json.decode(response.body);
          bool userVerification = data['data']['user_verification'];
          String message = data['data']['message'];
          if (userVerification) {
            setState(() {
              _isLoading = false;
            });
            ToastHelper.showSuccessToast(context, message!);
             context.go('/${widget.route}');
          } else {
            setState(() {
              _isLoading = false;
            });
            ToastHelper.showErrorToast(context, message!);
            logDebug('Invalid mobile number');
          }
        } else if (response.statusCode == 401) {
          setState(() {
            _isLoading = false;
          });
          await SessionManager().clear();
          ToastHelper.showErrorToast(context, 'Session Out');
          if (!context.mounted) return;
          context.go('/login');

        } else if (response.statusCode == 403) {
          setState(() {
            _isLoading = false;
          });
          await SessionManager().clear();
          ToastHelper.showErrorToast(context, 'Session Out');
          if (!context.mounted) return;
          context.go('/login');

        } else if (response.statusCode == 451) {
          setState(() {
            _isLoading = false;
          });
          final body =  jsonDecode(response.body);
          final message = body['message'];
          ToastHelper.showWarningToast(context, message);
        } else if (response.statusCode == 429) {
          setState(() {
            _isLoading = false;
          });
          final body =  jsonDecode(response.body);
          final message = body['message'];
          ToastHelper.showWarningToast(context, message);
        } else {
          setState(() {
            _isLoading = false;
          });
          throw Exception('Failed to load data');
        }
      }
    } catch (e) {
      setState(() {
        _isLoading = false;
      });
      // ToastHelper.showErrorToast(context, 'Unable to process. Please try again later');
      logDebug('Error: $e');
    }

    // 🔹 Password validation
    // if (password.isEmpty) {
    //   ToastHelper.showErrorToast(context, 'Please enter your password');
    //   return;
    // }
    // if (password.length < 6) {
    //   ToastHelper.showErrorToast(context, 'Password must be at least 6 characters');
    //   return;
    // }
    // if (!RegExp(r'^(?=.*[A-Z])(?=.*[0-9]).{6,}$').hasMatch(password)) {
    //   ToastHelper.showErrorToast(context, 'Include at least 1 uppercase letter and 1 number');
    //   return;
    // }
    //
    // // 🔹 Confirm password validation
    // if (confirmPassword.isEmpty) {
    //   ToastHelper.showErrorToast(context, 'Please confirm your password');
    //   return;
    // }
  }

  //Ends Login with UserName and Password

  @override
  Widget build(BuildContext context) {
    Size _size = MediaQuery.of(context).size;
    EdgeInsets marginInsets = EdgeInsets.zero;

    // const focusedBorderColor = Colors.white;
    // const fillColor = Color.fromRGBO(243, 246, 249, 0);
    // const borderColor = Color.fromRGBO(23, 171, 144, 0.4);

    if (Responsive.isDesktop(context)) {
      marginInsets = const EdgeInsets.only(
        left: 0,
        right: 0,
        bottom: 0,
        top: 0,
      );
    } else if (Responsive.isMobile(context)) {
      marginInsets = const EdgeInsets.only(
        left: 25, // Example value for mobile
        right: 25, // Example value for mobile
        bottom: 0, // Example value for mobile
        top: 0, // Example value for mobile
      );
    } else if (Responsive.isTablet(context)) {
      marginInsets = const EdgeInsets.only(
        left: 25, //// Example value for mobile
        right: 25, // Example value for mobile
        bottom: 0, // Example value for mobile
        top: 0, // Example value for mobile
      );
    }
    return WillPopScope(
        onWillPop: () async {
          // 🖥 Desktop / Web → always go back to login
          if (kIsWeb || Responsive.isDesktop(context)) {
            context.go('/login');
            return false;
          }
          // 📱 Mobile → keep existing behavior (exit app)
          exit(0);
          return false;
        },
        child: Scaffold(
            body: SingleChildScrollView(
              keyboardDismissBehavior: ScrollViewKeyboardDismissBehavior.onDrag,
              child: Container(
                  constraints: BoxConstraints(minHeight: _size.height),
                  color: Colors.white,
                  child: Stack(
                    children: [
                      // Visibility(
                      //   visible: _size.width <= 1100,
                      //   child: ClipRRect(
                      //     borderRadius: BorderRadius.only(
                      //       bottomLeft: Radius.circular(30),
                      //       bottomRight: Radius.circular(30),
                      //     ),
                      //     child: Container(
                      //       height: _size.height / 3,
                      //       width: double.infinity,
                      //       color: Color(0xFFFFFCE5),
                      //       child: Stack(
                      //         children: [
                      //           Column(
                      //             children: [
                      //               SizedBox(height: _size.height / 6.4),
                      //               Row(
                      //                 mainAxisAlignment: MainAxisAlignment
                      //                     .center, // Align to the center
                      //                 children: [
                      //                   Expanded(
                      //                     flex: Responsive.isDesktop(context)
                      //                         ? 10
                      //                         : 12,
                      //                     child: Align(
                      //                         alignment:
                      //                         Responsive.isDesktop(context)
                      //                             ? Alignment.centerLeft
                      //                             : Alignment.bottomCenter,
                      //                         child: Image.asset(
                      //                           'assets/nhance_app_logo.png',
                      //                           width: 150,
                      //                           height: 100,
                      //                         )),
                      //                   ),
                      //                   if (!Responsive.isMobile(context) &&
                      //                       !Responsive.isTablet(context))
                      //                     Expanded(
                      //                       flex: 2,
                      //                       child: MouseRegion(
                      //                         cursor: SystemMouseCursors.click,
                      //                         child: GestureDetector(
                      //                           onTap: () {
                      //                             // Add your navigation logic here
                      //                             // For example, you can use Navigator.push to navigate to another page
                      //                             Navigator.pushNamed(
                      //                                 context, 'hrLogin');
                      //                           },
                      //                           child: Row(
                      //                             mainAxisAlignment: MainAxisAlignment
                      //                                 .end, // Align to the end (right)
                      //                             children: [
                      //                               Text(
                      //                                 'HR Login',
                      //                                 style: TextStyle(
                      //                                   color: Color(
                      //                                       0xFF000000), // Text color
                      //                                   // Add other text styles as needed
                      //                                 ),
                      //                               ),
                      //                               SizedBox(width: 5),
                      //                               Icon(
                      //                                 Icons
                      //                                     .east, // Icon for customer login
                      //                                 color: Colors
                      //                                     .black, // Adjust color as needed
                      //                               ),
                      //                             ],
                      //                           ),
                      //                         ),
                      //                       ),
                      //                     ),
                      //                 ],
                      //               ),
                      //             ],
                      //           ),
                      //         ],
                      //       ),
                      //     ),
                      //   ),
                      // ),
                      Container(
                        margin: marginInsets,
                        alignment: Alignment.center,
                        child: SingleChildScrollView(
                          child: Form(
                            key: _formKey,
                            child: Column(
                              children: [
                                Row(
                                  children: [
                                    Expanded(
                                      flex: _size.width < 1100 ? 6 : 12,
                                      child: Container(
                                        margin: _size.width > 1100
                                            ? EdgeInsets.only(left: 20, right: 20)
                                            : EdgeInsets.only(left: 0, right: 0),
                                        child: Column(
                                          mainAxisAlignment:
                                          MainAxisAlignment.center,
                                          children: [
                                            if (!Responsive.isMobile(context) &&
                                                !Responsive.isTablet(context))
                                              Row(
                                                children: [
                                                  // InkWell(
                                                  //   onTap: () {
                                                  //     context.go('/home');
                                                  //   },
                                                  //   child: Row(
                                                  //     mainAxisAlignment: MainAxisAlignment.start,
                                                  //     children: [
                                                  //       // if (!Responsive.isDesktop(context))
                                                  //       Icon(
                                                  //         Icons.chevron_left,
                                                  //         color: Color(0xFF000000),
                                                  //         size: 30,
                                                  //       ),
                                                  //       SizedBox(
                                                  //           width: Responsive.isDesktop(context)
                                                  //               ? 0
                                                  //               : 5),
                                                  //     ],
                                                  //   ),
                                                  // ),
                                                  Expanded(
                                                    flex: 12,
                                                    child: Align(
                                                      alignment: Alignment.center,
                                                      child: _size.width <= 1100
                                                          ? Image.asset(
                                                        'assets/nhance_app_logo.png',
                                                        width: 150,
                                                        height: 150,
                                                      )
                                                          : _size.width > 1100
                                                          ? Image.asset(
                                                        'assets/nhance_app_logo.png',
                                                        width: 150,
                                                        height: 150,
                                                      )
                                                          : Image.asset(
                                                        'assets/nhance_app_logo.png',
                                                        width: 150,
                                                        height: 150,
                                                      ),
                                                    ),
                                                  ),
                                                ],
                                              ),
                                            SizedBox(
                                              height: Responsive.isDesktop(context)
                                                  ? null
                                                  : _size.height * 0.2,
                                            ),
                                            Container(
                                              margin: Responsive.isDesktop(context)
                                                  ? EdgeInsets.symmetric(
                                                  horizontal: 150)
                                                  : EdgeInsets.symmetric(
                                                  horizontal: 0),
                                              child: Row(
                                                mainAxisAlignment:
                                                MainAxisAlignment.center,
                                                children: [
                                                  Text(
                                                    "Set a new password",
                                                    style: GoogleFonts.poppins(
                                                      fontSize: 16,
                                                      fontWeight: FontWeight.bold,
                                                    ),
                                                  ),
                                                ],
                                              ),
                                            ),
                                            SizedBox(
                                              height: 10,
                                            ),
                                            Container(
                                              margin: Responsive.isDesktop(context)
                                                  ? EdgeInsets.symmetric(
                                                  horizontal: 150)
                                                  : EdgeInsets.symmetric(
                                                  horizontal: 0),
                                              child: Row(
                                                mainAxisAlignment:
                                                MainAxisAlignment.center,
                                                children: [
                                                  Expanded(
                                                    child: Text(
                                                      "Create a new password. Ensure it differs from previous ones for security",
                                                      style: GoogleFonts.poppins(
                                                          fontSize: 12,
                                                          color: Color(0xFF000000)),
                                                      textAlign: TextAlign.center,
                                                    ),
                                                  )
                                                ],
                                              ),
                                            ),
                                            SizedBox(
                                              height: 20,
                                            ),

                                            Column(
                                              children: [
                                                // 🔹 Password Field
                                                Container(
                                                  height: 55,
                                                  margin: Responsive.isDesktop(context)
                                                      ? const EdgeInsets.symmetric(horizontal: 150)
                                                      : const EdgeInsets.symmetric(horizontal: 0),
                                                  decoration: BoxDecoration(
                                                    border: Border.all(width: 1, color: Colors.grey),
                                                    borderRadius: BorderRadius.circular(10),
                                                  ),
                                                  child: TextFormField(
                                                    controller: newPasswordController,
                                                    obscureText: _obscureNewPassword,
                                                    onChanged: validatePassword,
                                                    textAlignVertical: TextAlignVertical.center,
                                                    decoration: InputDecoration(
                                                      border: InputBorder.none,
                                                      hintText: "New Password",
                                                      contentPadding: const EdgeInsets.symmetric(horizontal: 10),
                                                      suffixIcon: IconButton(
                                                        icon: Icon(
                                                          _obscureNewPassword ? Icons.visibility_off : Icons.visibility,
                                                          color: Colors.grey,
                                                        ),
                                                        onPressed: () {
                                                          setState(() {
                                                            _obscureNewPassword = !_obscureNewPassword;
                                                          });
                                                        },
                                                      ),
                                                    ),
                                                    validator: (value) {
                                                      final password = value ?? '';
                                                      if (password.isEmpty) {
                                                        return 'Please enter your new password';
                                                      }
                                                      if (password.length < 8) {
                                                        return 'Password must be at least 8 characters';
                                                      }
                                                      if (!RegExp(r'[A-Za-z]').hasMatch(password)) {
                                                        return 'Password must include at least 1 letter';
                                                      }
                                                      if (!RegExp(r'\d').hasMatch(password)) {
                                                        return 'Password must include at least 1 number';
                                                      }
                                                      if (!RegExp(r'[@$!%*#?&]').hasMatch(password)) {
                                                        return 'Password must include at least 1 special character';
                                                      }
                                                      return null;
                                                    },
                                                  ),
                                                ),
                                                const SizedBox(height: 8),
                                                // 🔹 VALIDATION LIST
                                                Padding(
                                                  padding: Responsive.isDesktop(context)
                                                      ? const EdgeInsets.symmetric(horizontal: 150)
                                                      : const EdgeInsets.symmetric(horizontal: 5),
                                                  child: Column(
                                                    crossAxisAlignment: CrossAxisAlignment.start,
                                                    children: [
                                                      Row(
                                                        children: [
                                                          Expanded(child: _buildCheckItem(hasMinLength, "Minimum 8 characters")),
                                                          Expanded(child: _buildCheckItem(hasSpecialChar, "1 special character")),
                                                        ],
                                                      ),
                                                      Row(
                                                        children: [
                                                          Expanded(child: _buildCheckItem(hasUpperLower, "1 UPPER or lower case")),
                                                          Expanded(child: _buildCheckItem(hasNumber, "1 numerical")),
                                                        ],
                                                      ),
                                                    ],
                                                  ),
                                                ),
                                                const SizedBox(height: 10),
                                                Container(
                                                  height: 55,
                                                  margin: Responsive.isDesktop(
                                                      context)
                                                      ? const EdgeInsets
                                                      .symmetric(
                                                      horizontal: 150)
                                                      : const EdgeInsets
                                                      .symmetric(
                                                      horizontal: 0),
                                                  decoration: BoxDecoration(
                                                    border: Border.all(
                                                        width: 1,
                                                        color: Colors.grey),
                                                    borderRadius:
                                                    BorderRadius.circular(
                                                        10),
                                                  ),
                                                  child: TextFormField(
                                                    controller:
                                                    confirmPasswordController,
                                                    obscureText:
                                                    _obscureConfirmPassword,
                                                    textAlignVertical:
                                                    TextAlignVertical
                                                        .center,
                                                    decoration: InputDecoration(
                                                      border: InputBorder.none,
                                                      hintText:
                                                      "Confirm Password",
                                                      contentPadding:
                                                      const EdgeInsets
                                                          .symmetric(
                                                          horizontal: 10),
                                                      suffixIcon: IconButton(
                                                        icon: Icon(
                                                          _obscureConfirmPassword
                                                              ? Icons
                                                              .visibility_off
                                                              : Icons
                                                              .visibility,
                                                          color: Colors.grey,
                                                        ),
                                                        onPressed: () {
                                                          setState(() {
                                                            _obscureConfirmPassword =
                                                            !_obscureConfirmPassword;
                                                          });
                                                        },
                                                      ),
                                                    ),
                                                    validator: (value) {
                                                      if (value == null ||
                                                          value.isEmpty) {
                                                        return 'Please confirm your password';
                                                      }
                                                      if (value !=
                                                          newPasswordController
                                                              .text) {
                                                        return 'Passwords do not match';
                                                      }
                                                      return null;
                                                    },
                                                  ),
                                                ),
                                              ],
                                            ),
                                            SizedBox(height: 15),
                                            Container(
                                              margin:
                                              Responsive.isDesktop(context)
                                                  ? EdgeInsets.symmetric(
                                                  horizontal: 150)
                                                  : EdgeInsets.symmetric(
                                                  horizontal: 0),
                                              child: SizedBox(
                                                width: double.infinity,
                                                height: 40,
                                                child: ElevatedButton(
                                                  style:
                                                  ElevatedButton.styleFrom(
                                                    backgroundColor:
                                                    Color(0xFF00989E),
                                                    shape:
                                                    RoundedRectangleBorder(
                                                      borderRadius:
                                                      BorderRadius.circular(
                                                          10),
                                                    ),
                                                  ),
                                                  onPressed: _isLoading
                                                      ? null
                                                      : resetYourPassword,

                                                  child: _isLoading
                                                      ? CircularProgressIndicator(
                                                    valueColor:
                                                    AlwaysStoppedAnimation<
                                                        Color>(
                                                      Color(0xFF00989E),
                                                    ),
                                                  )
                                                      : Text(
                                                    "Update Password",
                                                    style: GoogleFonts
                                                        .poppins(
                                                      color: Color(
                                                          0xFFFFFFFF),
                                                    ),
                                                  ),
                                                ),
                                              ),
                                            ),
                                            // _size.height * 0.3
                                            SizedBox(
                                              height: Responsive.isDesktop(context)
                                                  ? null
                                                  : _size.height * 0.2,
                                            ),
                                            // SizedBox(
                                            //   height: _size.height * 0.1,
                                            // ),
                                            Container(
                                              alignment: Alignment.bottomCenter,
                                              padding:
                                              EdgeInsets.symmetric(vertical: 8),
                                              child: RichText(
                                                textAlign: TextAlign.center,
                                                text: TextSpan(
                                                  text:
                                                  'By continuing, you agree with our ',
                                                  style: GoogleFonts.poppins(
                                                    color: Colors.black,
                                                    fontSize: 9,
                                                  ),
                                                  children: <InlineSpan>[
                                                    WidgetSpan(
                                                      child: MouseRegion(
                                                        cursor: SystemMouseCursors
                                                            .click,
                                                        child: GestureDetector(
                                                          onTap: () {
                                                            context.go(
                                                                '/privacypolicy');
                                                            // Navigator.pushNamed(
                                                            //     context,
                                                            //     'privacypolicy');
                                                          },
                                                          child: Text(
                                                            'privacy policy ',
                                                            style:
                                                            GoogleFonts.poppins(
                                                              color:
                                                              Color(0xFF00989E),
                                                              fontSize: 9,
                                                              decoration:
                                                              TextDecoration
                                                                  .underline,
                                                            ),
                                                          ),
                                                        ),
                                                      ),
                                                    ),
                                                    TextSpan(
                                                      text: 'and ',
                                                      style: GoogleFonts.poppins(
                                                        color: Colors.black,
                                                        fontSize: 9,
                                                      ),
                                                    ),
                                                    WidgetSpan(
                                                      child: MouseRegion(
                                                        cursor: SystemMouseCursors
                                                            .click,
                                                        child: GestureDetector(
                                                          onTap: () {
                                                            context
                                                                .go('/termsofuse');
                                                            // Navigator.pushNamed(
                                                            //     context,
                                                            //     'termsofuse');
                                                          },
                                                          child: Text(
                                                            'terms of use',
                                                            style:
                                                            GoogleFonts.poppins(
                                                              color:
                                                              Color(0xFF00989E),
                                                              fontSize: 9,
                                                              decoration:
                                                              TextDecoration
                                                                  .underline,
                                                            ),
                                                          ),
                                                        ),
                                                      ),
                                                    ),
                                                  ],
                                                ),
                                              ),
                                            ),
                                          ],
                                        ),
                                      ),
                                    ),
                                    if (_size.width > 1100)
                                      Expanded(
                                        flex: _size.width < 1100 ? 6 : 12,
                                        child: LayoutBuilder(
                                          builder: (BuildContext context,
                                              BoxConstraints constraints) {
                                            if (constraints.maxWidth > 600) {
                                              return Image.asset(
                                                'assets/login_web.jpg',
                                                height: _size.height,
                                                fit: BoxFit.cover,
                                              );
                                            } else {
                                              return SizedBox();
                                            }
                                          },
                                        ),
                                      ),
                                  ],
                                ),
                              ],
                            ),
                          ),
                        ),
                      ),
                    ],
                  )),
            )));
  }

  Widget _buildCheckItem(bool status, String text) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 2),
      child: Row(
        children: [
          Icon(
            status ? Icons.check : Icons.close,
            color: status ? Colors.green : Colors.red,
            size: 18,
          ),
          const SizedBox(width: 6),
          Text(
            text,
            style: TextStyle(
              color: status ? Colors.green : Colors.red,
              fontSize: 14,
            ),
          ),
        ],
      ),
    );
  }

}