fcs/lib/fcs/common/pages/faq/faq_edit_page.dart

import 'package:fcs/fcs/common/domain/entities/faq.dart';
import 'package:fcs/fcs/common/helpers/theme.dart';
import 'package:fcs/fcs/common/localization/app_translations.dart';
import 'package:fcs/fcs/common/pages/faq/model/faq_model.dart';
import 'package:fcs/fcs/common/pages/faq/widgets.dart';
import 'package:fcs/fcs/common/pages/util.dart';
import 'package:fcs/fcs/common/pages/widgets/input_text.dart';
import 'package:fcs/fcs/common/pages/widgets/progress.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';
import 'package:provider/provider.dart';

class FAQEditor extends StatefulWidget {
  final FAQ faq;
  const FAQEditor({this.faq});
  @override
  _FAQEditorState createState() => _FAQEditorState();
}

class _FAQEditorState extends State<FAQEditor> {
  TextEditingController _sn = new TextEditingController();
  TextEditingController _engQ = new TextEditingController();
  TextEditingController _mmQ = new TextEditingController();
  TextEditingController _engA = new TextEditingController();
  TextEditingController _mmA = new TextEditingController();

  final _formKey = GlobalKey<FormState>();
  bool _isLoading = false;
  bool _isNew = false;
  @override
  void initState() {
    super.initState();
    _isNew = widget.faq == null;
    if (widget.faq != null) {
      _sn.text = widget.faq.sn.toString();
      _engQ.text = widget.faq.questionEng;
      _mmQ.text = widget.faq.questionMm;
      _engA.text = widget.faq.answerEng;
      _mmA.text = widget.faq.answerMm;
    }
  }

  @override
  Widget build(BuildContext context) {
    final snBox = InputText(
      controller: _sn,
      maxLines: 1,
      withBorder: true,
      textInputType: TextInputType.number,
    );

    final questionEngBox = InputText(
      controller: _engQ,
      maxLines: 2,
      withBorder: true,
    );
    final answerEngBox = InputText(
      controller: _engA,
      maxLines: 5,
      withBorder: true,
    );
    final questionMmBox = InputText(
      controller: _mmQ,
      maxLines: 2,
      withBorder: true,
    );
    final answerMmBox = InputText(
      controller: _mmA,
      maxLines: 5,
      withBorder: true,
    );

    return LocalProgress(
        inAsyncCall: _isLoading,
        child: Scaffold(
            body: CustomScrollView(slivers: [
          SliverAppBar(
            leading: IconButton(
              icon: Icon(
                CupertinoIcons.back,
                size: 30,
              ),
              onPressed: () => Navigator.of(context).pop(),
            ),
            backgroundColor: primaryColor,
            expandedHeight: 150.0,
            floating: true,
            pinned: true,
            flexibleSpace: FlexibleSpaceBar(
              centerTitle: true,
              titlePadding: EdgeInsets.symmetric(vertical: 10),
              title: Text(
                  AppTranslations.of(context)
                      .text(_isNew ? 'faq.add.title' : 'faq.edit.title'),
                  style: TextStyle(
                    color: Colors.white,
                  )),
            ),
            actions: [
              IconButton(
                  onPressed: () => _save(),
                  icon: Icon(
                    Icons.save,
                    color: Colors.white,
                  ))
            ],
          ),
          SliverList(
              delegate: SliverChildListDelegate([
            Form(
              key: _formKey,
              child: Padding(
                padding: EdgeInsets.only(left: 24.0, right: 24.0),
                child: Column(
                  children: <Widget>[
                    Row(
                      children: [
                        Padding(
                          padding: const EdgeInsets.only(right: 18.0, left: 0),
                          child: subItemTitle(context, "faq.edit.sn"),
                        ),
                        Expanded(child: snBox),
                      ],
                    ),
                    Center(child: itemTitle(context, "faq.edit.eng")),
                    subItemTitle(context, "faq.edit.question",
                        iconData: SimpleLineIcons.question),
                    questionEngBox,
                    subItemTitle(context, "faq.edit.answer",
                        iconData: MaterialCommunityIcons.message_reply_text),
                    answerEngBox,
                    Divider(),
                    Center(child: itemTitle(context, "faq.edit.mm")),
                    subItemTitle(context, "faq.edit.question",
                        iconData: SimpleLineIcons.question),
                    questionMmBox,
                    subItemTitle(context, "faq.edit.answer",
                        iconData: MaterialCommunityIcons.message_reply_text),
                    answerMmBox,
                  ],
                ),
              ),
            ),
          ]))
        ])));
  }

  _save() async {
    setState(() {
      _isLoading = true;
    });
    try {
      int sn = int.parse(
        _sn.text,
        onError: (source) => throw Exception("Invalid number"),
      );
      FAQModel faqModel = Provider.of<FAQModel>(context, listen: false);
      FAQ _faq = FAQ(
          sn: sn,
          questionEng: _engQ.text,
          answerEng: _engA.text,
          questionMm: _mmQ.text,
          answerMm: _mmA.text);
      if (_isNew) {
        await faqModel.addFAQ(_faq);
      } else {
        _faq.id = widget.faq.id;
        await faqModel.updateFAQ(_faq);
      }
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }
}