import 'package:flutter/material.dart';

import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:vrouter/vrouter.dart';

import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/utils/platform_infos.dart';
import 'package:fluffychat/widgets/layouts/login_scaffold.dart';
import 'homeserver_picker.dart';

class HomeserverPickerView extends StatelessWidget {
  final HomeserverPickerController controller;

  const HomeserverPickerView(this.controller, {Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final benchmarkResults = controller.benchmarkResults;
    return LoginScaffold(
      appBar: VRouter.of(context).path == '/home'
          ? null
          : AppBar(title: Text(L10n.of(context)!.addAccount)),
      body: SafeArea(
        child: Column(
          children: [
            // display a prominent banner to import session for TOR browser
            // users. This feature is just some UX sugar as TOR users are
            // usually forced to logout as TOR browser is non-persistent
            AnimatedContainer(
              height: controller.isTorBrowser ? 64 : 0,
              duration: const Duration(milliseconds: 300),
              clipBehavior: Clip.hardEdge,
              curve: Curves.bounceInOut,
              decoration: const BoxDecoration(),
              child: Material(
                clipBehavior: Clip.hardEdge,
                borderRadius:
                    const BorderRadius.vertical(bottom: Radius.circular(8)),
                color: Theme.of(context).colorScheme.surface,
                child: ListTile(
                  leading: const Icon(Icons.vpn_key),
                  title: Text(L10n.of(context)!.hydrateTor),
                  subtitle: Text(L10n.of(context)!.hydrateTorLong),
                  trailing: const Icon(Icons.chevron_right_outlined),
                  onTap: controller.restoreBackup,
                ),
              ),
            ),
            Expanded(
              child: ListView(
                children: [
                  Container(
                    alignment: Alignment.center,
                    height: 256,
                    child: Image.asset('assets/info-logo.png'),
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: TextField(
                      focusNode: controller.homeserverFocusNode,
                      controller: controller.homeserverController,
                      onChanged: controller.onChanged,
                      decoration: InputDecoration(
                        prefixText: '${L10n.of(context)!.homeserver}: ',
                        hintText: L10n.of(context)!.enterYourHomeserver,
                        suffixIcon: const Icon(Icons.search),
                        errorText: controller.error,
                        fillColor: Theme.of(context)
                            .colorScheme
                            .background
                            .withOpacity(0.75),
                      ),
                      readOnly: !AppConfig.allowOtherHomeservers,
                      onSubmitted: (_) => controller.checkHomeserverAction(),
                      autocorrect: false,
                    ),
                  ),
                  if (controller.displayServerList)
                    Padding(
                      padding: const EdgeInsets.all(16.0),
                      child: Material(
                        borderRadius:
                            BorderRadius.circular(AppConfig.borderRadius),
                        color: Colors.white.withAlpha(200),
                        clipBehavior: Clip.hardEdge,
                        child: benchmarkResults == null
                            ? const Center(
                                child: Padding(
                                padding: EdgeInsets.all(16.0),
                                child: CircularProgressIndicator.adaptive(),
                              ))
                            : Column(
                                children: controller.filteredHomeservers
                                    .map(
                                      (server) => ListTile(
                                        trailing: IconButton(
                                          icon: const Icon(
                                            Icons.info_outlined,
                                            color: Colors.black,
                                          ),
                                          onPressed: () =>
                                              controller.showServerInfo(server),
                                        ),
                                        onTap: () => controller.setServer(
                                            server.homeserver.baseUrl.host),
                                        title: Text(
                                          server.homeserver.baseUrl.host,
                                          style: const TextStyle(
                                              color: Colors.black),
                                        ),
                                        subtitle: Text(
                                          server.homeserver.description ?? '',
                                          style: TextStyle(
                                              color: Colors.grey.shade700),
                                        ),
                                      ),
                                    )
                                    .toList(),
                              ),
                      ),
                    ),
                  Wrap(
                    alignment: WrapAlignment.center,
                    children: [
                      TextButton(
                        onPressed: () => launch(AppConfig.privacyUrl),
                        child: Text(
                          L10n.of(context)!.privacy,
                          style: const TextStyle(
                            decoration: TextDecoration.underline,
                            color: Colors.white,
                          ),
                        ),
                      ),
                      TextButton(
                        onPressed: () => PlatformInfos.showDialog(context),
                        child: Text(
                          L10n.of(context)!.about,
                          style: const TextStyle(
                            decoration: TextDecoration.underline,
                            color: Colors.white,
                          ),
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
            Container(
              padding: const EdgeInsets.all(16),
              width: double.infinity,
              child: Hero(
                tag: 'loginButton',
                child: ElevatedButton(
                  onPressed: controller.isLoading
                      ? null
                      : controller.checkHomeserverAction,
                  child: controller.isLoading
                      ? const LinearProgressIndicator()
                      : Text(L10n.of(context)!.connect),
                ),
              ),
            ),
            Padding(
              padding: const EdgeInsets.all(16),
              child: ExpansionTile(
                title: Text(L10n.of(context)!.advanced),
                children: [
                  Padding(
                    padding: const EdgeInsets.all(8.0),
                    child: TextButton(
                      onPressed: controller.isLoading
                          ? () {}
                          : controller.restoreBackup,
                      style: ElevatedButton.styleFrom(
                        primary: Colors.white.withAlpha(200),
                        onPrimary: Colors.black,
                        shadowColor: Colors.white,
                      ),
                      child: controller.isLoading
                          ? const LinearProgressIndicator()
                          : Text(L10n.of(context)!.hydrate),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}