import 'dart:async';

import 'package:flutter/material.dart';

import 'package:cherry_toast/cherry_toast.dart';

import 'common_widgets.dart';
import 'package:together_mobile/common/constants.dart';
import 'package:together_mobile/request/signup_signin.dart' as signup_request;

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

  @override
  State<SignupBody> createState() => _SignupBodyState();
}

class _SignupBodyState extends State<SignupBody> {
  bool _isProgressShow = false;
  bool _isHttpSend = false;

  final TextEditingController usernameController = TextEditingController();
  final TextEditingController passwordController = TextEditingController();
  final TextEditingController emailController = TextEditingController();
  final TextEditingController codeController = TextEditingController();

  final Map<String, bool> _isError = {
    'username': false,
    'password': false,
    'email': false,
    'code': false,
  };

  Timer? _timer;

  int _count = 60;
  bool _isGetCode = false;

  void _isInputError(String type, bool error) {
    setState(() {
      _isError[type] = error;
    });
  }

  @override
  void dispose() {
    usernameController.dispose();
    passwordController.dispose();
    _timer?.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.center,
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        Stack(
          alignment: Alignment.center,
          children: [
            const SizedBox(
              width: double.infinity,
            ),
            if (_isProgressShow)
              const CircularProgressIndicator(
                color: kSecondaryColor,
                strokeWidth: 6.0,
              ),
          ],
        ),
        SizedBox(
          width: 250,
          child: SignTextField(
            color: kSecondaryColor,
            labelText: '用户名',
            type: 'username',
            controller: usernameController,
            isError: _isInputError,
          ),
        ),
        SizedBox(
          width: 250,
          child: SignTextField(
            color: kSecondaryColor,
            obscureText: true,
            labelText: '密码',
            type: 'password',
            controller: passwordController,
            isError: _isInputError,
          ),
        ),
        SizedBox(
          width: 250,
          child: SignTextField(
            controller: emailController,
            color: kSecondaryColor,
            type: 'email',
            labelText: '邮箱',
            isError: _isInputError,
          ),
        ),
        SizedBox(
          width: 250,
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              SizedBox(
                width: 120,
                child: SignTextField(
                  controller: codeController,
                  color: kSecondaryColor,
                  type: 'code',
                  labelText: '验证码',
                  isError: _isInputError,
                ),
              ),
              TextButton(
                onPressed: () async {
                  await _getCode(context);
                },
                style: TextButton.styleFrom(
                  foregroundColor:
                      _isGetCode ? kUnActivatedColor : kSecondaryColor,
                ),
                child: Text(
                  _isGetCode ? '已发送($_count)' : '获取验证码',
                  style: TextStyle(
                    color: _isGetCode ? kUnActivatedColor : kSecondaryColor,
                    fontSize: 15.0,
                  ),
                ),
              ),
            ],
          ),
        ),
        elevatedButton(
          onPressed: () {
            _confirm(context);
          },
          text: '确定',
          color: kSecondaryColor,
        ),
      ],
    );
  }

  Future<void> _getCode(BuildContext context) async {
    if (_isGetCode) {
      _showWarningToast(context, '验证码还在有效期内');
      return;
    } else if (_isError['email']!) {
      _showWarningToast(context, '邮箱格式不正确');
      return;
    } else if (emailController.text.isEmpty) {
      _showWarningToast(context, '邮箱不能为空');
      return;
    }

    await signup_request.askCode(emailController.text);

    setState(() {
      _isGetCode = true;
      _timer = Timer.periodic(const Duration(seconds: 1), (timer) {
        setState(() {
          _count--;
        });

        if (_count == 0) {
          timer.cancel();
          setState(() {
            _isGetCode = false;
            _count = 60;
          });
        }
      });
    });
  }

  void _confirm(BuildContext context) async {
    if (_isError['username']! || _isError['password']!) {
      _showWarningToast(context, '账号或密码不符合规范');
      return;
    } else if (_isError['email']!) {
      _showWarningToast(context, '邮箱格式不正确');
      return;
    } else if (_isError['code']!) {
      _showWarningToast(context, '验证码格式不正确');
      return;
    } else if (emailController.text.isEmpty) {
      _showWarningToast(context, '邮箱不能为空');
      return;
    } else if (codeController.text.isEmpty) {
      _showWarningToast(context, '验证码不能为空');
      return;
    } else if (usernameController.text.isEmpty) {
      _showWarningToast(context, '用户名不能为空');
      return;
    } else if (passwordController.text.isEmpty) {
      _showWarningToast(context, '密码不能为空');
      return;
    }

    late Map<String, dynamic> res;

    setState(() {
      if (!_isProgressShow) _isProgressShow = true;
    });

    if (_isProgressShow && !_isHttpSend) {
      _isHttpSend = true;
      res = await signup_request.signup(
        usernameController.text,
        passwordController.text,
        emailController.text,
        codeController.text,
      );
    }

    setState(() {
      _isHttpSend = false;
      _isProgressShow = false;
    });

    if (res['code'] == 10100) {
      // ignore: use_build_context_synchronously
      CherryToast.success(
        title: const Text('注册成功!'),
        toastDuration: const Duration(seconds: 2),
        animationDuration: const Duration(seconds: 1),
      ).show(context);
    } else if (res['code'] == 10102) {
      // ignore: use_build_context_synchronously
      _showWarningToast(context, '验证码错误或已过期');
    }
  }

  void _showWarningToast(BuildContext context, String text) {
    CherryToast.warning(
      title: Text(text),
      toastDuration: const Duration(seconds: 2),
      animationDuration: const Duration(seconds: 1),
    ).show(context);
  }
}