/*
 * Copyright (C) 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.settings.users;

import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.UserHandle;
import android.os.UserManager;

import androidx.preference.Preference;

import com.android.settings.R;
import com.android.settings.core.TogglePreferenceController;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.RestrictedLockUtilsInternal;
import com.android.settingslib.RestrictedSwitchPreference;

/**
 * Controls the preference on the user settings screen which determines whether the guest user
 * should have access to telephony or not.
 */
public class GuestTelephonyPreferenceController extends TogglePreferenceController {

    private final UserManager mUserManager;
    private final UserCapabilities mUserCaps;

    public GuestTelephonyPreferenceController(Context context, String preferenceKey) {
        super(context, preferenceKey);
        mUserManager = context.getSystemService(UserManager.class);
        mUserCaps = UserCapabilities.create(context);
    }

    @Override
    public int getAvailabilityStatus() {
        if (!mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY)
                || UserManager.isHeadlessSystemUserMode()) {
            return DISABLED_FOR_USER;
        }
        if (android.multiuser.Flags.newMultiuserSettingsUx()) {
            if (!mUserCaps.isAdmin()) {
                return DISABLED_FOR_USER;
            }
            return AVAILABLE;
        } else {
            if (!mUserCaps.isAdmin() || !mUserCaps.mCanAddGuest) {
                return DISABLED_FOR_USER;
            } else {
                return mUserCaps.mUserSwitcherEnabled ? AVAILABLE : CONDITIONALLY_UNAVAILABLE;
            }
        }
    }

    @Override
    public boolean isChecked() {
        return !mUserManager.getDefaultGuestRestrictions()
                .getBoolean(UserManager.DISALLOW_OUTGOING_CALLS, false);
    }

    @Override
    public boolean setChecked(boolean isChecked) {
        Bundle guestRestrictions = mUserManager.getDefaultGuestRestrictions();
        guestRestrictions.putBoolean(UserManager.DISALLOW_SMS, true);
        guestRestrictions.putBoolean(UserManager.DISALLOW_OUTGOING_CALLS, !isChecked);
        mUserManager.setDefaultGuestRestrictions(guestRestrictions);
        return true;
    }

    @Override
    public int getSliceHighlightMenuRes() {
        return R.string.menu_key_system;
    }

    @Override
    public void updateState(Preference preference) {
        super.updateState(preference);
        mUserCaps.updateAddUserCapabilities(mContext);
        final RestrictedSwitchPreference restrictedSwitchPreference =
                (RestrictedSwitchPreference) preference;
        restrictedSwitchPreference.setChecked(isChecked());
        if (!isAvailable()) {
            restrictedSwitchPreference.setVisible(false);
        } else {
            if (android.multiuser.Flags.newMultiuserSettingsUx()) {
                restrictedSwitchPreference.setVisible(true);
                final RestrictedLockUtils.EnforcedAdmin disallowRemoveUserAdmin =
                        RestrictedLockUtilsInternal.checkIfRestrictionEnforced(mContext,
                                UserManager.DISALLOW_REMOVE_USER, UserHandle.myUserId());
                if (disallowRemoveUserAdmin != null) {
                    restrictedSwitchPreference.setDisabledByAdmin(disallowRemoveUserAdmin);
                } else if (mUserCaps.mDisallowAddUserSetByAdmin) {
                    restrictedSwitchPreference.setDisabledByAdmin(mUserCaps.mEnforcedAdmin);
                } else if (mUserCaps.mDisallowAddUser) {
                    // Adding user is restricted by system
                    restrictedSwitchPreference.setVisible(false);
                }
            } else {
                restrictedSwitchPreference.setDisabledByAdmin(
                        mUserCaps.disallowAddUser() ? mUserCaps.getEnforcedAdmin() : null);
                restrictedSwitchPreference.setVisible(mUserCaps.mUserSwitcherEnabled
                        && isAvailable());
            }
        }
    }
}