import 'dart:async';
import 'dart:io';

import 'package:eitc_erm_app/utils/Component.dart';
import 'package:eitc_erm_app/utils/Constants.dart';
import 'package:eitc_erm_app/utils/Utils.dart';
import 'package:eitc_erm_app/utils/logger.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:http/http.dart' as http;
import 'package:http/http.dart';

import 'agreement.dart';
import 'bean/normal_response.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(Register());
}

class Register extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => RegisterState();
}

class RegisterState extends State<Register> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: new AppBar(
        title: const Text('注册',
            style: TextStyle(
              color: Colors.white,
            )),
        centerTitle: true,
        elevation: 0.5,
        backgroundColor: Global.StatusBarColor,
        leading: new IconButton(
          tooltip: '返回上一页',
          icon: const Icon(
            Icons.arrow_back_ios,
            color: Colors.white,
          ),
          onPressed: () {
            Navigator.of(context).pop();
            //_nextPage(-1);
          },
        ),
      ),
      body: Center(
        child: MyBody(),
      ),
    );
  }
}

class MyBody extends StatefulWidget {
  @override
  _MyBodyState createState() => _MyBodyState();
}

class _MyBodyState extends State<MyBody> {
  bool isButtonEnable = true; //按钮状态 是否可点击
  String buttonText = '发送验证码'; //初始文本
  int count = 60; //初始倒计时时间
  Timer? timer; //倒计时的计时器
  TextEditingController mController = TextEditingController();
  TextEditingController phoneController = TextEditingController();
  TextEditingController identificationCardController = TextEditingController();
  TextEditingController passwordController = TextEditingController();
  bool isPasswordLogin = false;
  String passText = "验证码";
  String loginText = "密码登录";
  String hintText = "请输入验证码";
  bool _isChecked = false;

  void _buttonClickListen() {
    setState(() {
      if (!Utils.isChinaPhoneLegal(phoneController.text)) {
        Component.toast("请输入正确手机号码！", 0);
        return null;
      }
      sendCaptchaCode();
      if (isButtonEnable) {
        isButtonEnable = false; //按钮状态标记
        _initTimer();
        return null; //返回null按钮禁止点击
      } else {
        return null; //返回null按钮禁止点击
      }
    });
  }

  void _initTimer() {
    timer = Timer.periodic(const Duration(seconds: 1), (Timer timer) {
      count--;
      setState(() {
        if (count == 0) {
          timer.cancel(); //倒计时结束取消定时器
          isButtonEnable = true; //按钮可点击
          count = 60; //重置时间
          buttonText = '发送验证码'; //重置按钮文本
        } else {
          buttonText = '重新发送($count)'; //更新文本内容
        }
      });
    });
  }

  Future<String?> sendCaptchaCode() async {
    var params = {
      'phoneNumber': phoneController.text,
    };
    var response = await http.post(
        Uri.parse('${Global.BaseUrl}sendCaptchaCode'),
        body: encodeBody(params),
        headers: jsonHeaders());

    if (response.statusCode == 200) {
      final json = decodeBodyToJson(response.bodyBytes);
      logd(json);
      NormalResponse mNormalResponse = NormalResponse.fromJson(json);
      if (mNormalResponse.code == Global.responseSuccessCode) {
        Component.toast("短信发送成功，请查收！", 2);
      } else {
        Component.toast(mNormalResponse.msg.toString(), 0);
      }
      return response.toString();
    } else {
      Component.toast("出错了，请稍后再试！", 0);
      return null;
    }
  }

  @override
  void dispose() {
    timer?.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.only(top: 10.0, left: 10.0, right: 10.0),
      child: Column(
        children: <Widget>[
          Container(
            color: Colors.white,
            padding: const EdgeInsets.only(left: 10, right: 10),
            child: Column(
              children: <Widget>[
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.baseline,
                  textBaseline: TextBaseline.alphabetic,
                  children: <Widget>[
                    const Text(
                      '身份证',
                      style: TextStyle(fontSize: 13, color: Color(0xff333333)),
                    ),
                    Expanded(
                      child: Padding(
                        padding:
                            const EdgeInsets.only(left: 5, right: 15, top: 5),
                        child: TextFormField(
                          maxLines: 1,
                          onSaved: (value) {},
                          controller: identificationCardController,
                          textAlign: TextAlign.left,
                          inputFormatters: [
                            FilteringTextInputFormatter.digitsOnly,
                            LengthLimitingTextInputFormatter(18)
                          ],
                          decoration: const InputDecoration(
                            hintText: ('请填写身份证号码'),
                            hintStyle: TextStyle(
                              color: Color(0xff999999),
                              fontSize: 13,
                            ),
                            alignLabelWithHint: true,
                            border:
                                OutlineInputBorder(borderSide: BorderSide.none),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.baseline,
                  textBaseline: TextBaseline.alphabetic,
                  children: <Widget>[
                    const Text(
                      '密码',
                      style: TextStyle(fontSize: 13, color: Color(0xff333333)),
                    ),
                    Expanded(
                      child: Padding(
                        padding:
                            const EdgeInsets.only(left: 20, right: 15, top: 5),
                        child: TextFormField(
                          maxLines: 1,
                          onSaved: (value) {},
                          controller: passwordController,
                          textAlign: TextAlign.left,
                          inputFormatters: [
                            FilteringTextInputFormatter.digitsOnly,
                            LengthLimitingTextInputFormatter(20)
                          ],
                          decoration: const InputDecoration(
                            hintText: ('请填写密码'),
                            hintStyle: TextStyle(
                              color: Color(0xff999999),
                              fontSize: 13,
                            ),
                            alignLabelWithHint: true,
                            border:
                                OutlineInputBorder(borderSide: BorderSide.none),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.baseline,
                  textBaseline: TextBaseline.alphabetic,
                  children: <Widget>[
                    const Text(
                      '+86',
                      style: TextStyle(fontSize: 13, color: Color(0xff333333)),
                    ),
                    Expanded(
                      child: Padding(
                        padding:
                            const EdgeInsets.only(left: 20, right: 15, top: 5),
                        child: TextFormField(
                          maxLines: 1,
                          onSaved: (value) {},
                          controller: phoneController,
                          textAlign: TextAlign.left,
                          inputFormatters: [
                            FilteringTextInputFormatter.digitsOnly,
                            LengthLimitingTextInputFormatter(11)
                          ],
                          decoration: const InputDecoration(
                            hintText: ('请填写手机号'),
                            hintStyle: TextStyle(
                              color: Color(0xff999999),
                              fontSize: 13,
                            ),
                            alignLabelWithHint: true,
                            border:
                                OutlineInputBorder(borderSide: BorderSide.none),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  crossAxisAlignment: CrossAxisAlignment.baseline,
                  textBaseline: TextBaseline.alphabetic,
                  children: <Widget>[
                    Text(
                      passText,
                      style: const TextStyle(
                          fontSize: 13, color: Color(0xff333333)),
                    ),
                    Expanded(
                      child: Padding(
                        padding:
                            const EdgeInsets.only(left: 15, right: 15, top: 0),
                        child: TextFormField(
                          maxLines: 1,
                          onSaved: (value) {},
                          controller: mController,
                          textAlign: TextAlign.left,
                          inputFormatters: [
                            FilteringTextInputFormatter.digitsOnly,
                            LengthLimitingTextInputFormatter(6)
                          ],
                          decoration: const InputDecoration(
                            hintText: ('请输入验证码'),
                            contentPadding: EdgeInsets.only(top: -5, bottom: 0),
                            hintStyle: TextStyle(
                              color: Color(0xff999999),
                              fontSize: 13,
                            ),
                            alignLabelWithHint: true,
                            border:
                                OutlineInputBorder(borderSide: BorderSide.none),
                          ),
                        ),
                      ),
                    ),
                    Container(
                      padding: const EdgeInsets.all(0),
                      width: 120,
                      child: Visibility(
                        visible: !isPasswordLogin,
                        child: ElevatedButton(
                          style: ButtonStyle(
                            backgroundColor:
                                WidgetStateProperty.resolveWith<Color>(
                                    (states) {
                              if (states.contains(WidgetState.disabled)) {
                                return Colors.brown;
                              }
                              return Colors.blue;
                            }),
                            foregroundColor:
                                const WidgetStatePropertyAll(Colors.white),
                          ),
                          onPressed: () {
                            setState(() {
                              _buttonClickListen();
                            });
                          },
                          child: Text(
                            buttonText,
                            style: const TextStyle(
                              fontSize: 12,
                            ),
                          ),
                        ),
                      ),
                    ),
                  ],
                ),
                Padding(
                    padding: const EdgeInsets.only(top: 20, bottom: 0),
                    child: Row(
                        mainAxisAlignment: MainAxisAlignment.start,
                        children: <Widget>[
                          SizedBox(
                            width: 20.0,
                            height: 20.0,
                            child: Checkbox(
                              value: _isChecked,
                              onChanged: (bool? newValue) {
                                setState(() {
                                  _isChecked = newValue ?? false;
                                });
                              },
                              activeColor: Colors.green, // 选中时的颜色
                              checkColor: Colors.white, // 选中标记的颜色
                            ),
                          ),
                          const Text(
                            "  同意",
                            style: TextStyle(
                                fontSize: 13, color: Color(0xff333333)),
                          ),
                          GestureDetector(
                            onTap: () {
                              Navigator.push(
                                context,
                                MaterialPageRoute(
                                    builder: (context) => Agreement()),
                              );
                            },
                            child: const Text(
                              "口腔医院相关服务协议及隐私政策",
                              style: TextStyle(
                                  fontSize: 14, color: Colors.blueAccent),
                            ),
                          ),
                        ]))
              ],
            ),
          ),
          Container(
            width: double.infinity,
            height: 45,
            margin: const EdgeInsets.only(top: 20, left: 10, right: 10),
            child: ElevatedButton(
              style: ButtonStyle(
                backgroundColor:
                    WidgetStateProperty.resolveWith<Color>((states) {
                  return Colors.blue; // Regular color
                }),
              ),
              onPressed: () {
                logd('手机号：${phoneController.text}，验证码：${mController.text}');
                register();
              },
              child: Text(
                '注册',
                style: TextStyle(color: Colors.white, fontSize: 15),
              ),
            ),
          ),
        ],
      ),
    );
  }

  void _showDialog() {
    showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: const Text('提示'),
          content: const Text('请您阅读《口腔医院相关服务协议及隐私政策》并勾选同意'),
          actions: <Widget>[
            TextButton(
              onPressed: () {
                Navigator.of(context).pop();
              },
              child: const Text("确定",
                  style: TextStyle(color: Colors.white, fontSize: 13)),
            ),
          ],
        );
      },
    );
  }

  Future<String?> register() async {
    if (phoneController.text.length < 11) {
      Component.toast("请正确填写电话号码！", 0);
      return null;
    } else if (mController.text.length < 6) {
      Component.toast("请正确填写验证码！", 0);
      return null;
    } else if (!Utils.validateIDCard(identificationCardController.text)) {
      Component.toast("请正确填写身份证号码！", 0);
      return null;
    } else if (passwordController.text.length < 6) {
      Component.toast("请正确填写密码！", 0);
      return null;
    } else if (!Utils.isChinaPhoneLegal(phoneController.text)) {
      Component.toast("请输入正确手机号码！", 0);
      return null;
    } else if (!Utils.isVerifyCode(mController.text)) {
      Component.toast("请输入正确验证码！", 0);
      return null;
    }
    if (!_isChecked) {
      _showDialog();
      return null;
    }
    bool bo = await _checkCaptchaCode();
    if (!bo) {
      Component.toast("验证码错误！", 0);
      return null;
    }
    var params = {
      'phoneNumber': phoneController.text,
      'captchaCode': mController.text,
      'identificationCard': identificationCardController.text,
      'password': passwordController.text,
    };

    var response = await http.post(Uri.parse('${Global.BaseUrl}register'),
        body: encodeBody(params), headers: jsonHeaders());
    if (response.statusCode == 200) {
      final json = decodeBodyToJson(response.bodyBytes);
      logd(json);
      NormalResponse mNormalResponse = new NormalResponse.fromJson(json);
      if (mNormalResponse.code == Global.responseSuccessCode) {
        Component.toast("注册成功！", 2);
        Navigator.pushReplacementNamed(context, "/login");
      } else {
        Component.toast(mNormalResponse.msg.toString(), 0);
      }
      return response.toString();
    } else {
      Component.toast("出错了，请稍后再试！", 0);
      return null;
    }
  }

  ///检查验证码
  Future<bool> _checkCaptchaCode() async {
    Map<String, dynamic> params = {
      "phoneNumber": phoneController.text,
      "captchaCode": mController.text
    };
    Uri uri = Uri.parse("${Global.BaseUrl}api/checkCaptchaCode");
    logd("检查验证码,uri=$uri");
    Response response =
        await http.post(uri, body: encodeBody(params), headers: jsonHeaders());
    if (response.statusCode == 200) {
      final json = decodeBodyToJson(response.bodyBytes);
      logd("检查验证码结果$json");
      NormalResponse mNormalResponse = NormalResponse.fromJson(json);
      return mNormalResponse.code == 200;
    } else {
      logd("检查验证码异常${response.body}");
    }
    return false;
  }
}