doctor_app_flutter/lib/widgets/auth/auth_header.dart

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:hexcolor/hexcolor.dart';

import '../../config/size_config.dart';
import '../../lookups/auth_lookup.dart';
import 'package:doctor_app_flutter/util/translations_delegate_base.dart';

class AuthHeader extends StatelessWidget {
  var userType;
  AuthHeader(this.userType);

  @override
  Widget build(BuildContext context) {
    var screen = Container(
        margin: SizeConfig.isMobile
            ? null
            : EdgeInsetsDirectional.fromSTEB(SizeConfig.realScreenWidth * 0.30,
                SizeConfig.realScreenWidth * 0.1, 0, 0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Container(
                  margin: SizeConfig.isMobile
                      ? EdgeInsetsDirectional.fromSTEB(
                          0, SizeConfig.realScreenHeight * 0.03, 0, 0)
                      : EdgeInsetsDirectional.fromSTEB(
                          SizeConfig.realScreenWidth * 0.13, 0, 0, 0),
                  child: buildImageLogo(),
                ),
                SizedBox(
                  height: 10,
                ),
                buildTextUnderLogo(context),
              ],
            ),
            Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: SizeConfig.isMobile
                  ? <Widget>[
                      SizedBox(
                        height: 10,
                      ),
                      buildWelText(context),
                      buildDrSulText(context),
                    ]
                  : <Widget>[
                      SizedBox(
                        height: 10,
                      ),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.start,
                        children: <Widget>[
                          buildWelText(context),
                          buildDrSulText(context),
                        ],
                      ),
                    ],
            ),
            buildDrAppContainer(context)
          ],
        ));
    return screen;
  }

  Image buildImageLogo() {
    String img = 'assets/images/dr_app_logo.png';
    return Image.asset(
      img,
      fit: BoxFit.cover,
      height: SizeConfig.isMobile ? null : SizeConfig.realScreenWidth * 0.09,
    );
  }

  Widget buildTextUnderLogo(context) {
    Widget finalWid;
    double textFontSize =
        SizeConfig.isMobile ? 30 : SizeConfig.textMultiplier * 3;
    EdgeInsetsDirectional containerMargin;
    if (userType == loginType.knownUser || userType == loginType.unknownUser) {
      finalWid = Text(
        TranslationBase.of(context).login,
        style: TextStyle(fontSize: textFontSize, fontWeight: FontWeight.w800),
      );
    } else {
      String text1;
      String text2;
      if (userType == loginType.changePassword) {
        text1 = 'Change ';
        text2 = 'Password!';
      }
      if (userType == loginType.verifyPassword) {
        text1 = TranslationBase.of(context).verify1;
        text2 = TranslationBase.of(context).yourAccount;
      }
      if (userType == loginType.verificationMethods) {
        text1 = TranslationBase.of(context).choose;
        text2 = TranslationBase.of(context).verification;
      }
      List<Widget> childrens = <Widget>[
        Text(
          text1,
          style: TextStyle(fontSize: textFontSize, fontWeight: FontWeight.w800),
        ),
        Text(
          text2,
          style: TextStyle(
              color: HexColor('#B8382C'),
              fontSize: textFontSize,
              fontWeight: FontWeight.w800),
        )
      ];

      if (!SizeConfig.isMobile) {
        finalWid = Row(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: childrens,
        );
      } else {
        finalWid = Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: childrens,
        );
      }
    }
    if (!SizeConfig.isMobile) {
      double start = SizeConfig.realScreenWidth * 0.13;
      if (loginType.verifyPassword == userType ||
          loginType.changePassword == userType ||
          userType == loginType.verificationMethods) {
        start = 0;
      }
      containerMargin = EdgeInsetsDirectional.fromSTEB(start, 0, 0, 0);
    }

    return Container(margin: containerMargin, child: finalWid);
  }

  Container buildDrAppContainer(BuildContext context) {
    if (userType == loginType.changePassword ||
        userType == loginType.verifyPassword ||
        userType == loginType.verificationMethods) {
      return Container();
    }
    return Container(
      margin: SizeConfig.isMobile
          ? null
          : EdgeInsetsDirectional.fromSTEB(
              SizeConfig.realScreenWidth * 0.13, 0, 0, 0),
      child: Text(
        "Doctor App",
        style: TextStyle(
            fontSize:
                SizeConfig.isMobile ? 26 : SizeConfig.realScreenWidth * 0.030,
            fontWeight: FontWeight.w800,
            color: HexColor('#B8382C')),
      ),
    );
  }

  Text buildDrSulText(BuildContext context) {
    if (userType == loginType.changePassword ||
        userType == loginType.verifyPassword ||
        userType == loginType.verificationMethods) {
      return Text('');
    }
    return Text(
      TranslationBase.of(context).drSulaimanAlHabib,
      style: TextStyle(
        fontWeight: FontWeight.w800,
        fontSize: SizeConfig.isMobile ? 24 : SizeConfig.realScreenWidth * 0.029,
        color: HexColor('#B8382C'),
      ),
    );
  }

  Widget buildWelText(BuildContext context) {
    String text = TranslationBase.of(context).welcomeTo;
    if (userType == loginType.unknownUser) {
      text = TranslationBase.of(context).welcomeBackTo;
    }
    if (userType == loginType.changePassword ||
        userType == loginType.verifyPassword ||
        userType == loginType.verificationMethods) {
      return Text('');
    }
    return Text(
      text,
      style: TextStyle(
          fontSize:
              SizeConfig.isMobile ? 24 : SizeConfig.realScreenWidth * 0.029),
    );
  }
}