hostsidetests/time/device/fake_tzps_app/src/com/android/time/cts/fake_tzps_app/fixture/FakeTimeZoneProviderFixtureProvider.java

/*
 * Copyright (C) 2021 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.time.cts.fake_tzps_app.fixture;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;

import com.android.time.cts.fake_tzps_app.tzps.FakeTimeZoneProviderService;

import java.util.Arrays;
import java.util.List;
import java.util.Objects;

/**
 * A {@link ContentProvider} that can interact with the fake {@link
 * android.service.timezone.TimeZoneProviderService} implementations. This enables test code to
 * interact with the fakes: device-side code can use the usual content provider APIs, and both
 * device-side and host-side code can use the "adb shell content" command. For simplicity,
 * everything is implemented using the "call" verb.
 */
public class FakeTimeZoneProviderFixtureProvider extends ContentProvider {

    private static final String METHOD_GET_STATE = "get_state";
    private static final String CALL_RESULT_KEY_GET_STATE_STATE = "state";
    private static final String METHOD_REPORT_PERMANENT_FAILURE = "perm_fail";
    private static final String METHOD_REPORT_UNCERTAIN = "uncertain";
    private static final String METHOD_REPORT_SUCCESS = "success";
    private static final String METHOD_PING = "ping";

    /** Suggestion time zone IDs. A single string, comma separated, may be empty. */
    private static final String CALL_EXTRA_KEY_SUGGESTION_ZONE_IDS = "zone_ids";

    @Override
    public boolean onCreate() {
        return true;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
            String sortOrder) {
        // No impl
        return null;
    }

    @Override
    public String getType(Uri uri) {
        // No impl
        return null;
    }

    @Override
    public Uri insert(Uri uri, ContentValues values) {
        // No impl
        return null;
    }

    @Override
    public int delete(Uri uri, String selection, String[] selectionArgs) {
        // No impl
        return 0;
    }

    @Override
    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
        // No impl
        return 0;
    }

    @Override
    public Bundle call(String method, String arg, Bundle extras) {
        Objects.requireNonNull(extras);

        if (METHOD_PING.equals(method)) {
            // No-op - this method just exists to make sure the content provider exists.
            return Bundle.EMPTY;
        }

        String providerId = Objects.requireNonNull(arg);
        FakeTimeZoneProviderService provider = FakeTimeZoneProviderRegistry.getInstance()
                .getFakeTimeZoneProviderService(providerId);
        Objects.requireNonNull(provider, "arg=" + providerId + ", provider not found");

        Bundle result = new Bundle();
        switch (method) {
            case METHOD_GET_STATE: {
                result.putInt(CALL_RESULT_KEY_GET_STATE_STATE, provider.getState());
                break;
            }
            case METHOD_REPORT_PERMANENT_FAILURE: {
                provider.fakeReportPermanentFailure();
                break;
            }
            case METHOD_REPORT_UNCERTAIN: {
                provider.fakeReportUncertain();
                break;
            }
            case METHOD_REPORT_SUCCESS: {
                String zoneIdsString = extras.getString(CALL_EXTRA_KEY_SUGGESTION_ZONE_IDS);
                List<String> zoneIds = Arrays.asList(zoneIdsString.split(","));
                provider.fakeReportSuggestion(zoneIds);
                break;
            }
            default: {
                throw new IllegalArgumentException("method=" + method + " not known");
            }
        }
        return result;
    }
}