import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:prosappco/components/general_primary_button.dart';
import 'package:user_repository/user_repository.dart';

import '../../blocs/sign_up_bloc/sign_up_bloc.dart';
import '../../components/strings.dart';
import '../../components/textfield.dart';

class SignUpScreen extends StatefulWidget {
  const SignUpScreen({super.key});

  @override
  State<SignUpScreen> createState() => _SignUpScreenState();
}

class _SignUpScreenState extends State<SignUpScreen> {
  final _formKey = GlobalKey<FormState>();
  final emailController = TextEditingController();
  final passwordController = TextEditingController();
  bool obscurePassword = true;
  IconData iconPassword = CupertinoIcons.eye_fill;
  final nameController = TextEditingController();
  bool signUpRequired = false;

  bool containsUpperCase = false;
  bool containsLowerCase = false;
  bool containsNumber = false;
  bool containsSpecialChar = false;
  bool contains8Length = false;

  @override
  Widget build(BuildContext context) {
    final width = MediaQuery.of(context).size.width;

    return BlocListener<SignUpBloc, SignUpState>(
      listener: (context, state) {
        if (state is SignUpSuccess) {
          setState(() {
            signUpRequired = false;
          });
        } else if (state is SignUpProcess) {
          setState(() {
            signUpRequired = true;
          });
        } else if (state is SignUpFailure) {
          return;
        }
      },
      child: Column(
        children: [
          SizedBox(
            width: double.infinity,
            child: Row(
              children: [
                IconButton(
                  onPressed: () {
                    Navigator.pop(context);
                  },
                  icon: const Icon(
                    CupertinoIcons.arrow_left,
                    size: 30,
                  ),
                ),
                Text(
                  'Registrate',
                  style: TextStyle(
                    // fontSize: 30,
                    fontSize: width * 0.08,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ],
            ),
          ),
          Form(
            key: _formKey,
            child: Center(
              child: Column(
                children: [
                  const SizedBox(height: 20),
                  SizedBox(
                    width: MediaQuery.of(context).size.width * 0.9,
                    child: MyTextField(
                        controller: emailController,
                        hintText: 'Email',
                        obscureText: false,
                        keyboardType: TextInputType.emailAddress,
                        prefixIcon: const Icon(CupertinoIcons.mail_solid),
                        validator: (val) {
                          if (val!.isEmpty) {
                            return 'Please fill in this field';
                          } else if (!emailRexExp.hasMatch(val)) {
                            return 'Please enter a valid email';
                          }
                          return null;
                        }),
                  ),
                  const SizedBox(height: 10),
                  SizedBox(
                    width: MediaQuery.of(context).size.width * 0.9,
                    child: MyTextField(
                        controller: passwordController,
                        hintText: 'Password',
                        obscureText: obscurePassword,
                        keyboardType: TextInputType.visiblePassword,
                        prefixIcon: const Icon(CupertinoIcons.lock_fill),
                        onChanged: (val) {
                          if (val!.contains(RegExp(r'[A-Z]'))) {
                            setState(() {
                              containsUpperCase = true;
                            });
                          } else {
                            setState(() {
                              containsUpperCase = false;
                            });
                          }
                          if (val.contains(RegExp(r'[a-z]'))) {
                            setState(() {
                              containsLowerCase = true;
                            });
                          } else {
                            setState(() {
                              containsLowerCase = false;
                            });
                          }
                          if (val.contains(RegExp(r'[0-9]'))) {
                            setState(() {
                              containsNumber = true;
                            });
                          } else {
                            setState(() {
                              containsNumber = false;
                            });
                          }
                          if (val.contains(specialCharRexExp)) {
                            setState(() {
                              containsSpecialChar = true;
                            });
                          } else {
                            setState(() {
                              containsSpecialChar = false;
                            });
                          }
                          if (val.length >= 8) {
                            setState(() {
                              contains8Length = true;
                            });
                          } else {
                            setState(() {
                              contains8Length = false;
                            });
                          }
                          return null;
                        },
                        suffixIcon: IconButton(
                          onPressed: () {
                            setState(() {
                              obscurePassword = !obscurePassword;
                              if (obscurePassword) {
                                iconPassword = CupertinoIcons.eye_fill;
                              } else {
                                iconPassword = CupertinoIcons.eye_slash_fill;
                              }
                            });
                          },
                          icon: Icon(iconPassword),
                        ),
                        validator: (val) {
                          if (val!.isEmpty) {
                            return 'Please fill in this field';
                          } else if (!passwordRexExp.hasMatch(val)) {
                            return 'Please enter a valid password';
                          }
                          return null;
                        }),
                  ),
                  const SizedBox(height: 10),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            "⚈  1 uppercase",
                            style: TextStyle(
                                color: containsUpperCase
                                    ? Colors.green
                                    : Theme.of(context)
                                        .colorScheme
                                        .onBackground),
                          ),
                          Text(
                            "⚈  1 lowercase",
                            style: TextStyle(
                                color: containsLowerCase
                                    ? Colors.green
                                    : Theme.of(context)
                                        .colorScheme
                                        .onBackground),
                          ),
                        ],
                      ),
                      Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            "⚈  8 minimum character",
                            style: TextStyle(
                                color: contains8Length
                                    ? Colors.green
                                    : Theme.of(context)
                                        .colorScheme
                                        .onBackground),
                          ),
                          Text(
                            "⚈  1 number",
                            style: TextStyle(
                                color: containsNumber
                                    ? Colors.green
                                    : Theme.of(context)
                                        .colorScheme
                                        .onBackground),
                          ),
                        ],
                      ),
                    ],
                  ),
                  const SizedBox(height: 10),
                  SizedBox(
                    width: MediaQuery.of(context).size.width * 0.9,
                    child: MyTextField(
                        labelText: 'Nombre',
                        controller: nameController,
                        hintText: 'Ingresa tu nombre',
                        obscureText: false,
                        keyboardType: TextInputType.name,
                        prefixIcon: const Icon(CupertinoIcons.person_fill),
                        validator: (val) {
                          if (val!.isEmpty) {
                            return 'Please fill in this field';
                          } else if (val.length > 30) {
                            return 'Name too long';
                          }
                          return null;
                        },),
                  ),
                  SizedBox(height: MediaQuery.of(context).size.height * 0.02),
                  !signUpRequired
                      ? SizedBox(
                          width: MediaQuery.of(context).size.width * 0.5,
                          child: GeneralPrimaryButton(
                            label: 'Registrarme',
                            onPressed: () {
                              if (_formKey.currentState!.validate()) {
                                MyUser myUser = MyUser.empty;
                                myUser = myUser.copyWith(
                                  email: emailController.text,
                                  name: nameController.text,
                                );

                                setState(() {
                                  context.read<SignUpBloc>().add(SignUpRequired(
                                      myUser, passwordController.text));
                                });
                              }
                            },
                          ),
                        )
                      : const CircularProgressIndicator(),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}