import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:outbag_app/backend/request.dart';
import 'package:outbag_app/backend/themes.dart';
import 'package:outbag_app/backend/user.dart';
import 'package:outbag_app/screens/settings/dialogs/password.dart';
import 'package:outbag_app/tools/fetch_wrapper.dart';
import 'package:provider/provider.dart';

class SettingsPage extends StatefulWidget {
  const SettingsPage({super.key});

  @override
  State<StatefulWidget> createState() => _SettingsPageState();
}

class _SettingsPageState extends State<SettingsPage> {
  @override
  Widget build(BuildContext context) {
    final textTheme = Theme.of(context)
        .textTheme
        .apply(displayColor: Theme.of(context).colorScheme.onSurface);

    final user = context.watch<User>();
    final meta = context.watch<AccountMeta?>();

    return Scaffold(
        appBar: AppBar(
          title: const Text('Settings'),
        ),
        body: SingleChildScrollView(
            child: Center(
                child: Column(children: [
          // uswer information widget
          Padding(
              padding: const EdgeInsets.all(14),
              child: Card(
                  child: Padding(
                      padding: const EdgeInsets.all(8),
                      child: Column(
                        children: [
                          Padding(
                              padding: const EdgeInsets.all(8),
                              child: Text(user.humanReadable,
                                  style: textTheme.titleLarge)),
                          ListTile(
                            title: const Text('Room count limit:'),
                            subtitle: const Text(
                                'How many rooms you are allowed to own'),
                            trailing: Text('${meta?.maxRoomCount ?? ""}'),
                          ),
                          ListTile(
                            title: const Text('Room size limit:'),
                            subtitle: const Text(
                                'How many items/products/categories each room may contain'),
                            trailing: Text('${meta?.maxRoomSize ?? ""}'),
                          ),
                          ListTile(
                              title: const Text('Room member limit:'),
                              subtitle: const Text(
                                  'How many members each of your rooms may have'),
                              trailing:
                                  Text('${meta?.maxRoomMemberCount ?? ""}')),
                          ListTile(
                              title: const Text('Discoverable'),
                              subtitle: const Text(
                                  'Determines if your account can be discovered by users from other servers'),
                              trailing: Checkbox(
                                tristate: true,
                                value: meta?.discoverable,
                                onChanged: (_) {},
                              ))
                        ],
                      )))),

          // change theme button
          ListTile(
            title: const Text('Change Theme'),
            subtitle: const Text(
                'You can change between a light theme, a dark theme and automatic theme selection'),
            trailing: const Icon(Icons.chevron_right),
            onTap: () {
              showDialog(
                  context: context,
                  builder: (context) => AlertDialog(
                        title: const Text('Change Theme'),
                        content: SingleChildScrollView(
                            child: Column(children: [
                          const Padding(
                            padding: EdgeInsets.all(8),
                            child: Text('Choose your preferred theme'),
                          ),
                          SegmentedButton<AppTheme>(
                            selected: {context.watch<AppTheme>()},
                            selectedIcon: Icon(context.watch<AppTheme>().icon),
                            showSelectedIcon: true,
                            multiSelectionEnabled: false,
                            emptySelectionAllowed: false,
                            segments: AppTheme.list().map((item) {
                              return ButtonSegment<AppTheme>(
                                  value: item,
                                  icon: Icon(item.icon),
                                  label: Text(item.name));
                            }).toList(),
                            onSelectionChanged: (item) async {
                              try {
                                await item.first.toDisk();
                              } catch (_) {}
                            },
                          ),
                        ])),
                        actions: [
                          FilledButton(
                            child: const Text('Close'),
                            onPressed: () {
                              Navigator.of(context).pop();
                            },
                          )
                        ],
                      ));
            },
          ),

          // change password button
          ListTile(
            title: const Text('Change password'),
            subtitle: const Text('Choose a new password for your account'),
            onTap: () {
              showDialog(
                  context: context,
                  builder: (context) => const ChangePasswordDialog());
            },
            trailing: const Icon(Icons.chevron_right),
          ),

          // export account to json
          ListTile(
            title: const Text('Export account'),
            subtitle: const Text('Export account data'),
            onTap: () {
              // TODO: show confirm dialog
              // NOTE: json dump the localstore
              // including users and rooms
              // NOTE: feature not confirmed
            },
            trailing: const Icon(Icons.chevron_right),
          ),

          // delete account button
          ListTile(
            title: const Text('Delete account'),
            subtitle: const Text('Delete your account from your homeserver'),
            onTap: () {
              // show confirm dialog
              // NOTE: same as logout
              // and performs a network request
              // but deletes account beforehand
              showDialog(
                  context: context,
                  builder: (ctx) => AlertDialog(
                        title: const Text('Delete account'),
                        content: const Text(
                            'Do you really want to delete your account?'),
                        actions: [
                          TextButton(
                            onPressed: () {
                              // close popup
                              Navigator.of(ctx).pop();
                            },
                            child: const Text('Cancel'),
                          ),
                          FilledButton(
                            onPressed: () async {
                              // send request
                              final scaffMgr = ScaffoldMessenger.of(ctx);
                              final nav = Navigator.of(ctx);
                              final router = GoRouter.of(ctx);

                              doNetworkRequest(scaffMgr,
                                  req: () => postWithCreadentials(
                                      path: 'deleteAccount',
                                      target: user.server,
                                      body: {},
                                      credentials: user),
                                  onOK: (_) async {
                                    // delete everything
                                    // delete user data (meta)
                                    try {
                                      await User.removeDisk();
                                    } catch (_) {}
                                    // TODO: delete all rooms

                                    // go back home
                                    router.pushReplacementNamed('home');
                                  },
                                  after: () {
                                    // close popup
                                    nav.pop();
                                  });
                            },
                            child: const Text('Delete Account'),
                          )
                        ],
                      ));
            },
            trailing: const Icon(Icons.chevron_right),
          ),

          // logout button
          Padding(
              padding: const EdgeInsets.all(8),
              child: FilledButton.tonal(
                child: const Text('Log out'),
                onPressed: () {
                  // show confirm dialog
                  showDialog(
                      context: context,
                      builder: (ctx) => AlertDialog(
                            title: const Text('Log out'),
                            content:
                                const Text('Do you really want to log out?'),
                            actions: [
                              TextButton(
                                onPressed: () {
                                  // close popup
                                  Navigator.of(ctx).pop();
                                },
                                child: const Text('Cancel'),
                              ),
                              FilledButton(
                                onPressed: () async {
                                  // send request
                                  final router = GoRouter.of(ctx);

                                  // delete everything
                                  // delete user data (meta)
                                  try {
                                    await User.removeDisk();
                                  } catch (_) {}
                                  // TODO: delete all rooms

                                  // go back home
                                  router.pushReplacementNamed('home');
                                },
                                child: const Text('Log out'),
                              )
                            ],
                          ));
                },
              ))
        ]))));
  }
}