import 'package:comunic/helpers/database/users_database_helper.dart';
import 'package:comunic/helpers/settings_helper.dart';
import 'package:comunic/models/account_image_settings.dart';
import 'package:comunic/ui/widgets/async_screen_widget.dart';
import 'package:comunic/ui/widgets/network_image_widget.dart';
import 'package:comunic/utils/account_utils.dart';
import 'package:comunic/utils/files_utils.dart';
import 'package:comunic/utils/intl_utils.dart';
import 'package:comunic/utils/ui_utils.dart';
import 'package:flutter/material.dart';
import 'package:identicon/identicon.dart';
import 'package:random_string/random_string.dart';
import 'package:settings_ui/settings_ui.dart';

/// Account image settings section
///
/// @author Pierre Hubert

class AccountImageSettingsScreen extends StatefulWidget {
  @override
  _AccountImageSettingsScreenState createState() =>
      _AccountImageSettingsScreenState();
}

class _AccountImageSettingsScreenState
    extends State<AccountImageSettingsScreen> {
  AccountImageSettings _settings;

  final _key = GlobalKey<AsyncScreenWidgetState>();

  @override
  void dispose() {
    // Remove current user information to force refresh of account image
    UsersDatabaseHelper().delete(userID());

    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AsyncScreenWidget(
      key: _key,
      onReload: () async =>
          _settings = await SettingsHelper.getAccountImageSettings(),
      onBuild: () => _buildLayout(),
      errorMessage: tr("Could not get account image settings!"),
    );
  }

  Widget _buildLayout() {
    return SettingsList(
      sections: [
        SettingsSection(
          title: tr("General"),
          tiles: _settings.hasImage
              ? _buildHasAccountImageTiles()
              : _buildNoAccountImageTiles(),
        )
      ],
    );
  }

  /// When user has no account image yet
  List<SettingsTile> _buildNoAccountImageTiles() {
    return [
      SettingsTile(
        title: tr("No account image yet..."),
        leading: NetworkImageWidget(
          url: _settings.imageURL,
          width: 40,
        ),
      ),

      // Upload new account image
      SettingsTile(
        title: tr("Upload an account image"),
        onTap: () => _uploadAccountImage(),
      ),

      // Generate a random account image
      SettingsTile(
        title: tr("Generate a random account image"),
        onTap: () => _generateRandomAccountImage(),
      ),
    ];
  }

  /// When the user has an account image
  List<SettingsTile> _buildHasAccountImageTiles() {
    return [
      // Current account image (if any)
      SettingsTile(
        title: tr("Current account image"),
        leading: NetworkImageWidget(
          url: _settings.imageURL,
          width: 40,
        ),
      ),

      // Upload new account image
      SettingsTile(
        title: tr("Upload new account image"),
        onTap: () => _uploadAccountImage(),
      ),

      // Generate a random account image
      SettingsTile(
        title: tr("Generate a random account image"),
        onTap: () => _generateRandomAccountImage(),
      ),

      // Change account image visibility
      SettingsTile(
          title: tr("Change account image visibility"),
          onTap: () => _chooseAccountImageVisibility(),
          subtitle: tr("Current level: %level%", args: {
            "level":
                _settings.visibility == AccountImageVisibilityLevels.EVERYONE
                    ? tr("Everyone")
                    : _settings.visibility ==
                            AccountImageVisibilityLevels.COMUNIC_USERS
                        ? tr("Comunic users")
                        : tr("My friends only"),
          })),

      // Delete account image
      SettingsTile(
        title: tr("Delete account image"),
        onTap: () => _deleteAccountImage(),
      ),
    ];
  }

  /// Upload a new account image
  void _uploadAccountImage() async {
    final image = await pickImage(context);

    if (image == null) return;

    if (!await SettingsHelper.uploadAccountImage(image)) {
      showSimpleSnack(context, tr("Could not upload your account image!"));
      return;
    }

    _key.currentState.refresh();
  }

  /// Generate a random account image
  void _generateRandomAccountImage() async {
    // Generate emoticon
    final bytes = Identicon().generate(randomString(10));

    if (!await SettingsHelper.uploadAccountImageFromMemory(bytes)) {
      showSimpleSnack(
          context, tr("Could not upload your generated account image!"));
      return;
    }

    _key.currentState.refresh();
  }

  /// Change account image visibility
  void _chooseAccountImageVisibility() async {
    final newLevel = await showDialog<AccountImageVisibilityLevels>(
        context: context,
        builder: (c) => AlertDialog(
              title: Text(tr("Account image visiblity")),
              content:
                  Text(tr("Please choose new account image visibility level:")),
              actions: <Widget>[
                MaterialButton(
                  child: Text(tr("Everyone")),
                  onPressed: () =>
                      Navigator.pop(c, AccountImageVisibilityLevels.EVERYONE),
                ),
                MaterialButton(
                  child: Text(tr("Connected users")),
                  onPressed: () => Navigator.pop(
                      c, AccountImageVisibilityLevels.COMUNIC_USERS),
                ),
                MaterialButton(
                  child: Text(tr("My friends")),
                  onPressed: () => Navigator.pop(
                      c, AccountImageVisibilityLevels.FRIENDS_ONLY),
                )
              ],
            ));

    if (newLevel == null) return;

    if (!await SettingsHelper.setAccountImageVisibilityLevel(newLevel)) {
      showSimpleSnack(
          context, tr("Could not update account image visibility level!"));
      return;
    }

    _key.currentState.refresh();
  }

  /// Delete user account image
  void _deleteAccountImage() async {
    if (!await showConfirmDialog(
        context: context,
        message: tr("Do you really want to delete your account image ?")))
      return;

    if (!await SettingsHelper.deleteAccountImage()) {
      showSimpleSnack(context, tr("Could not user account image!"));
      return;
    }

    _key.currentState.refresh();
  }
}