MrZaiko/Polysmee

package io.github.polysmee.settings.fragments;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatDelegate;
import androidx.preference.PreferenceFragmentCompat;
import androidx.preference.PreferenceManager;
import androidx.preference.SwitchPreference;

import io.github.polysmee.R;

/**
 * Fragment representing the main setting user interface.
 */
public final class SettingsMainFragment extends PreferenceFragmentCompat {

    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        setPreferencesFromResource(R.xml.preference_fragment_settings_main, rootKey);
        SwitchPreference switchPreference =
                findPreference(getString(R.string.preference_key_is_dark_mode));
        assert switchPreference != null;
        switchPreference.setOnPreferenceClickListener(x -> {
            this.onDarkModeClick();
            return true;
        });
    }

    /**
     * Function called when the switch setting for dark mode is clicked on. It set the application
     * theme to the one specified by the value of this switch setting.
     */
    private void onDarkModeClick() {
        boolean isDarkMode = PreferenceManager.getDefaultSharedPreferences(requireContext()).getBoolean(
                requireContext().getResources().getString(R.string.preference_key_is_dark_mode),
                false);
        if (isDarkMode) {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        } else {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    }
}