/*
 * Copyright (C) 2017 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.settingslib;

import static android.Manifest.permission.WRITE_SECURE_SETTINGS;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.ArgumentMatchers.argThat;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import android.app.ActivityManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.location.LocationManager;
import android.os.UserHandle;
import android.provider.Settings;
import android.provider.Settings.Secure;
import android.text.TextUtils;
import com.android.settingslib.wrapper.LocationManagerWrapper;
import java.util.HashMap;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentMatcher;
import org.mockito.ArgumentMatchers;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.robolectric.RuntimeEnvironment;
import org.robolectric.annotation.Config;
import org.robolectric.annotation.Implementation;
import org.robolectric.annotation.Implements;
import org.robolectric.shadows.ShadowSettings;

@RunWith(SettingsLibRobolectricTestRunner.class)
@Config(
        manifest = TestConfig.MANIFEST_PATH,
        sdk = TestConfig.SDK_VERSION,
        shadows = {
            UtilsTest.ShadowSecure.class,
            UtilsTest.ShadowLocationManagerWrapper.class})
public class UtilsTest {
    private static final double[] TEST_PERCENTAGES = {0, 0.4, 0.5, 0.6, 49, 49.3, 49.8, 50, 100};
    private static final String PERCENTAGE_0 = "0%";
    private static final String PERCENTAGE_1 = "1%";
    private static final String PERCENTAGE_49 = "49%";
    private static final String PERCENTAGE_50 = "50%";
    private static final String PERCENTAGE_100 = "100%";

    private Context mContext;
    @Mock
    private LocationManager mLocationManager;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        mContext = spy(RuntimeEnvironment.application);
        when(mContext.getSystemService(Context.LOCATION_SERVICE)).thenReturn(mLocationManager);
        ShadowSecure.reset();
    }

    @Test
    public void testUpdateLocationMode_sendBroadcast() {
        int currentUserId = ActivityManager.getCurrentUser();
        Utils.updateLocationMode(
                mContext,
                Secure.LOCATION_MODE_OFF,
                Secure.LOCATION_MODE_HIGH_ACCURACY,
                currentUserId);

        verify(mContext).sendBroadcastAsUser(
                argThat(actionMatches(LocationManager.MODE_CHANGING_ACTION)),
                ArgumentMatchers.eq(UserHandle.of(currentUserId)),
                ArgumentMatchers.eq(WRITE_SECURE_SETTINGS));
    }

    @Test
    public void testUpdateLocationEnabled_sendBroadcast() {
        int currentUserId = ActivityManager.getCurrentUser();
        Utils.updateLocationEnabled(mContext, true, currentUserId);

        verify(mContext).sendBroadcastAsUser(
            argThat(actionMatches(LocationManager.MODE_CHANGING_ACTION)),
            ArgumentMatchers.eq(UserHandle.of(currentUserId)),
            ArgumentMatchers.eq(WRITE_SECURE_SETTINGS));
    }

    @Test
    public void testFormatPercentage_RoundTrue_RoundUpIfPossible() {
        final String[] expectedPercentages = {PERCENTAGE_0, PERCENTAGE_0, PERCENTAGE_1,
                PERCENTAGE_1, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_50, PERCENTAGE_50,
                PERCENTAGE_100};

        for (int i = 0, size = TEST_PERCENTAGES.length; i < size; i++) {
            final String percentage = Utils.formatPercentage(TEST_PERCENTAGES[i], true);
            assertThat(percentage).isEqualTo(expectedPercentages[i]);
        }
    }

    @Test
    public void testFormatPercentage_RoundFalse_NoRound() {
        final String[] expectedPercentages = {PERCENTAGE_0, PERCENTAGE_0, PERCENTAGE_0,
                PERCENTAGE_0, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_49, PERCENTAGE_50,
                PERCENTAGE_100};

        for (int i = 0, size = TEST_PERCENTAGES.length; i < size; i++) {
            final String percentage = Utils.formatPercentage(TEST_PERCENTAGES[i], false);
            assertThat(percentage).isEqualTo(expectedPercentages[i]);
        }
    }

    @Test
    public void testStorageManagerDaysToRetainUsesResources() {
        Resources resources = mock(Resources.class);
        when(resources.getInteger(
                        eq(
                                com.android
                                        .internal
                                        .R
                                        .integer
                                        .config_storageManagerDaystoRetainDefault)))
                .thenReturn(60);
        assertThat(Utils.getDefaultStorageManagerDaysToRetain(resources)).isEqualTo(60);
    }

    private static ArgumentMatcher<Intent> actionMatches(String expected) {
        return intent -> TextUtils.equals(expected, intent.getAction());
    }

    @Implements(value = Settings.Secure.class)
    public static class ShadowSecure extends ShadowSettings.ShadowSecure {
        private static Map<String, Integer> map = new HashMap<>();

        @Implementation
        public static boolean putIntForUser(ContentResolver cr, String name, int value, int userHandle) {
            map.put(name, value);
            return true;
        }

        @Implementation
        public static int getIntForUser(ContentResolver cr, String name, int def, int userHandle) {
            if (map.containsKey(name)) {
                return map.get(name);
            } else {
                return def;
            }
        }

        public static void reset() {
            map.clear();
        }
    }

    @Implements(value = LocationManagerWrapper.class)
    public static class ShadowLocationManagerWrapper {

        @Implementation
        public void setLocationEnabledForUser(boolean enabled, UserHandle userHandle) {
            // Do nothing
        }
    }
}