import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:flutter_slidable/flutter_slidable.dart';
import 'package:flutter_speed_dial/flutter_speed_dial.dart';

import '../hooks/stores.dart';
import '../util/goto.dart';
import '../widgets/about_tile.dart';
import 'add_account.dart';
import 'add_instance.dart';

/// Page with a list of different settings sections
class SettingsPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);

    return Scaffold(
      appBar: AppBar(
        brightness: theme.brightness,
        backgroundColor: theme.scaffoldBackgroundColor,
        shadowColor: Colors.transparent,
        iconTheme: theme.iconTheme,
        title: Text('Settings', style: theme.textTheme.headline6),
        centerTitle: true,
      ),
      body: Container(
        child: ListView(
          children: [
            ListTile(
              leading: Icon(Icons.person),
              title: Text('Accounts'),
              onTap: () {
                goTo(context, (_) => AccountsConfigPage());
              },
            ),
            ListTile(
              leading: Icon(Icons.color_lens),
              title: Text('Appearance'),
              onTap: () {
                goTo(context, (_) => AppearanceConfigPage());
              },
            ),
            AboutTile()
          ],
        ),
      ),
    );
  }
}

/// Settings for theme color, AMOLED switch
class AppearanceConfigPage extends HookWidget {
  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final configStore = useConfigStore();

    return Scaffold(
      appBar: AppBar(
        brightness: theme.brightness,
        backgroundColor: theme.scaffoldBackgroundColor,
        shadowColor: Colors.transparent,
        iconTheme: theme.iconTheme,
        title: Text('Appearance', style: theme.textTheme.headline6),
        centerTitle: true,
      ),
      body: Observer(
        builder: (ctx) => ListView(
          children: [
            _SectionHeading('Theme'),
            for (final theme in ThemeMode.values)
              RadioListTile<ThemeMode>(
                value: theme,
                title: Text(theme.toString().split('.')[1]),
                groupValue: configStore.theme,
                onChanged: (selected) {
                  configStore.theme = selected;
                },
              ),
            SwitchListTile(
                title: Text('AMOLED dark mode'),
                value: configStore.amoledDarkMode,
                onChanged: (checked) {
                  configStore.amoledDarkMode = checked;
                })
          ],
        ),
      ),
    );
  }
}

/// Settings for managing accounts
class AccountsConfigPage extends HookWidget {
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey();

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final accountsStore = useAccountsStore();

    removeInstanceDialog(String instanceUrl) async {
      if (await showDialog<bool>(
            context: context,
            builder: (context) => AlertDialog(
              title: Text('Remove instance?'),
              content: Text('Are you sure you want to remove $instanceUrl?'),
              actions: [
                FlatButton(
                  child: Text('no'),
                  onPressed: () => Navigator.of(context).pop(false),
                ),
                FlatButton(
                  child: Text('yes'),
                  onPressed: () => Navigator.of(context).pop(true),
                ),
              ],
            ),
          ) ??
          false) {
        accountsStore.removeInstance(instanceUrl);
      }
    }

    Future<void> removeUserDialog(String instanceUrl, String username) async {
      if (await showDialog<bool>(
            context: context,
            builder: (context) => AlertDialog(
              title: Text('Remove user?'),
              content: Text(
                  'Are you sure you want to remove $username@$instanceUrl?'),
              actions: [
                FlatButton(
                  child: Text('no'),
                  onPressed: () => Navigator.of(context).pop(false),
                ),
                FlatButton(
                  child: Text('yes'),
                  onPressed: () => Navigator.of(context).pop(true),
                ),
              ],
            ),
          ) ??
          false) {
        accountsStore.removeAccount(instanceUrl, username);
      }
    }

    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(
        backgroundColor: theme.scaffoldBackgroundColor,
        brightness: theme.brightness,
        shadowColor: Colors.transparent,
        iconTheme: theme.iconTheme,
        title: Text('Accounts', style: theme.textTheme.headline6),
        centerTitle: true,
      ),
      floatingActionButton: SpeedDial(
        animatedIcon: AnimatedIcons.menu_close, // TODO: change to + => x
        closeManually: false,
        curve: Curves.bounceIn,
        tooltip: 'Add account or instance',
        child: Icon(Icons.add),
        overlayColor: theme.canvasColor,
        children: [
          SpeedDialChild(
            child: Icon(Icons.person_add),
            label: 'Add account',
            labelBackgroundColor: theme.canvasColor,
            onTap: () => showCupertinoModalPopup(
                context: context,
                builder: (_) =>
                    AddAccountPage(instanceUrl: accountsStore.instances.last)),
          ),
          SpeedDialChild(
            child: Icon(Icons.dns),
            labelBackgroundColor: theme.canvasColor,
            label: 'Add instance',
            onTap: () => showCupertinoModalPopup(
                context: context, builder: (_) => AddInstancePage()),
          ),
        ],
      ),
      body: Observer(
        builder: (ctx) {
          final theme = Theme.of(context);

          return ListView(
            children: [
              if (accountsStore.tokens.isEmpty)
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Padding(
                      padding: const EdgeInsets.only(top: 100),
                      child: FlatButton.icon(
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(10),
                          ),
                          onPressed: () => showCupertinoModalPopup(
                                context: context,
                                builder: (_) => AddInstancePage(),
                              ),
                          icon: Icon(Icons.add),
                          label: Text('Add instance')),
                    ),
                  ],
                ),
              for (final entry in accountsStore.tokens.entries) ...[
                SizedBox(height: 40),
                Slidable(
                  actionPane: SlidableBehindActionPane(),
                  secondaryActions: [
                    IconSlideAction(
                      closeOnTap: true,
                      onTap: () => removeInstanceDialog(entry.key),
                      icon: Icons.delete_sweep,
                      color: Colors.red,
                    ),
                  ],
                  key: Key(entry.key),
                  child: Container(
                    color: theme.canvasColor,
                    child: ListTile(
                      dense: true,
                      contentPadding: EdgeInsets.only(left: 0, top: 0),
                      title: _SectionHeading(entry.key),
                    ),
                  ),
                ),
                for (final username in entry.value.keys) ...[
                  Slidable(
                    actionPane: SlidableBehindActionPane(),
                    key: Key('$username@${entry.key}'),
                    secondaryActions: [
                      IconSlideAction(
                        closeOnTap: true,
                        onTap: () => removeUserDialog(entry.key, username),
                        icon: Icons.delete_sweep,
                        color: Colors.red,
                      ),
                    ],
                    child: Container(
                      decoration: BoxDecoration(color: theme.canvasColor),
                      child: ListTile(
                        trailing: username ==
                                accountsStore.defaultUsernameFor(entry.key)
                            ? Icon(
                                Icons.check_circle_outline,
                                color: theme.accentColor,
                              )
                            : null,
                        title: Text(username),
                        onLongPress: () {
                          accountsStore.setDefaultAccountFor(
                              entry.key, username);
                        },
                        onTap: () {}, // TODO: go to managing account
                      ),
                    ),
                  ),
                ],
                if (entry.value.keys.isEmpty)
                  ListTile(
                    leading: Icon(Icons.add),
                    title: Text('Add account'),
                    onTap: () {
                      showCupertinoModalPopup(
                          context: context,
                          builder: (_) =>
                              AddAccountPage(instanceUrl: entry.key));
                    },
                  ),
              ]
            ],
          );
        },
      ),
    );
  }
}

class _SectionHeading extends StatelessWidget {
  final String text;

  const _SectionHeading(this.text);

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    return Padding(
      child: Text(text.toUpperCase(),
          style: theme.textTheme.subtitle2.copyWith(color: theme.accentColor)),
      padding: EdgeInsets.only(left: 20, top: 0),
    );
  }
}