import 'package:clipboard/clipboard.dart';
import 'package:flutter/material.dart';
import 'package:flutter_translate/flutter_translate.dart';
import 'package:provider/provider.dart';

import '../../core/enums/viewstate.dart';
import '../../core/models/session.dart';
import '../../core/viewmodels/upload_model.dart';
import '../shared/app_colors.dart';
import '../widgets/centered_error_row.dart';
import '../widgets/my_appbar.dart';
import '../widgets/swipe_navigation.dart';
import 'base_view.dart';

class UploadView extends StatelessWidget {
  static const routeName = '/upload';

  @override
  Widget build(BuildContext context) {
    return BaseView<UploadModel>(
        onModelReady: (model) => model.init(),
        builder: (context, model, child) => Scaffold(
            appBar: MyAppBar(title: Text(translate('titles.upload'))),
            backgroundColor: backgroundColor,
            body: SwipeNavigation(child: _render(model, context))));
  }

  bool _isUploadButtonEnabled(UploadModel model) {
    return model.pasteTextTouched || (model.paths != null && model.paths.length > 0);
  }

  Widget _render(UploadModel model, BuildContext context) {
    var url = Provider.of<Session>(context).url;

    return model.state == ViewState.Busy
        ? Center(
            child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                CircularProgressIndicator(),
                (model.stateMessage != null && model.stateMessage.isNotEmpty ? Text(model.stateMessage) : Container())
              ]))
        : ListView(children: <Widget>[
            Padding(
                padding: const EdgeInsets.only(left: 25.0, right: 25.0),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Padding(
                        padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                        child: TextFormField(
                            minLines: 1,
                            maxLines: 7,
                            decoration: InputDecoration(
                              prefixIcon: Icon(
                                Icons.text_snippet,
                                color: buttonBackgroundColor,
                              ),
                              suffixIcon: IconButton(
                                onPressed: () => model.pasteTextController.clear(),
                                icon: Icon(Icons.clear),
                              ),
                              hintText: translate('upload.text_to_be_pasted'),
                              contentPadding: EdgeInsets.fromLTRB(20.0, 10.0, 20.0, 10.0),
                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(32.0)),
                            ),
                            controller: model.pasteTextController)),
                    Padding(
                        padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                        child: Row(
                            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                            crossAxisAlignment: CrossAxisAlignment.end,
                            children: [Text(translate('upload.and_or'))])),
                    Padding(
                        padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                        child: Row(
                          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                          crossAxisAlignment: CrossAxisAlignment.end,
                          children: [
                            ElevatedButton.icon(
                                icon: Icon(Icons.file_copy_sharp, color: blueColor),
                                onPressed: () => model.openFileExplorer(),
                                label: Text(
                                  translate('upload.open_file_explorer'),
                                  style: TextStyle(color: buttonForegroundColor),
                                )),
                            ElevatedButton.icon(
                                icon: Icon(Icons.cancel, color: orangeColor),
                                onPressed: model.paths != null && model.paths.length > 0
                                    ? () => model.clearCachedFiles()
                                    : null,
                                label: Text(
                                  translate('upload.clear_temporary_files'),
                                  style: TextStyle(color: buttonForegroundColor),
                                )),
                          ],
                        )),
                    Padding(
                        padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                        child: Row(
                            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                            crossAxisAlignment: CrossAxisAlignment.center,
                            children: [
                              Checkbox(
                                value: model.createMulti,
                                onChanged: (v) => model.toggleCreateMulti(),
                              ),
                              Text(translate('upload.multipaste')),
                            ])),
                    Padding(
                        padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                        child: Row(
                            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                            crossAxisAlignment: CrossAxisAlignment.end,
                            children: [
                              ElevatedButton.icon(
                                  onPressed: !_isUploadButtonEnabled(model)
                                      ? null
                                      : () async {
                                          Map<String, bool> items = await model.upload();

                                          if (items != null) {
                                            var clipboardContent = '';
                                            items.forEach((id, isMulti) {
                                              if (isMulti && model.createMulti || !isMulti && !model.createMulti) {
                                                clipboardContent += '$url/$id\n';
                                              }
                                            });

                                            FlutterClipboard.copy(clipboardContent).then((value) {
                                              final snackBar = SnackBar(
                                                action: SnackBarAction(
                                                  label: translate('upload.dismiss'),
                                                  textColor: blueColor,
                                                  onPressed: () {
                                                    ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                                  },
                                                ),
                                                content: Text(translate('upload.uploaded')),
                                                duration: Duration(seconds: 10),
                                              );
                                              ScaffoldMessenger.of(context).showSnackBar(snackBar);
                                            });
                                          }
                                        },
                                  icon: Icon(Icons.upload_rounded, color: greenColor),
                                  label: Text(
                                    translate('upload.upload'),
                                    style: TextStyle(color: buttonForegroundColor),
                                  )),
                            ])),
                    model.errorMessage != null && model.errorMessage.isNotEmpty
                        ? (Padding(
                            padding: const EdgeInsets.only(top: 10.0, bottom: 10.0),
                            child: CenteredErrorRow(model.errorMessage)))
                        : Container(),
                    Builder(
                      builder: (BuildContext context) => model.loadingPath
                          ? Padding(
                              padding: const EdgeInsets.only(bottom: 10.0),
                              child: const CircularProgressIndicator(),
                            )
                          : model.paths != null
                              ? Container(
                                  padding: const EdgeInsets.only(bottom: 30.0),
                                  height: MediaQuery.of(context).size.height * 0.50,
                                  child: ListView.separated(
                                    itemCount: model.paths != null && model.paths.isNotEmpty ? model.paths.length : 1,
                                    itemBuilder: (BuildContext context, int index) {
                                      final bool isMultiPath = model.paths != null && model.paths.isNotEmpty;
                                      final String name = (isMultiPath
                                          ? model.paths.map((e) => e.name).toList()[index]
                                          : model.fileName ?? '...');
                                      final path = model.paths.length > 0
                                          ? model.paths.map((e) => e.path).toList()[index].toString()
                                          : '';

                                      return Card(
                                          child: ListTile(
                                        title: Text(
                                          name,
                                        ),
                                        subtitle: Text(path),
                                      ));
                                    },
                                    separatorBuilder: (BuildContext context, int index) => const Divider(),
                                  ),
                                )
                              : Container(),
                    ),
                  ],
                ))
          ]);
  }
}