/*
 * Copyright (C) 2020 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.
 */
#include <aidl/Gtest.h>
#include <aidl/Vintf.h>

#include <aidl/android/hardware/power/BnPower.h>
#include <aidl/android/hardware/power/BnPowerHintSession.h>
#include <android-base/properties.h>
#include <android/binder_ibinder.h>
#include <android/binder_manager.h>
#include <android/binder_process.h>
#include <android/binder_status.h>

#include <unistd.h>

namespace aidl::android::hardware::power {
namespace {

using ::android::base::GetUintProperty;
using android::hardware::power::Boost;
using android::hardware::power::IPower;
using android::hardware::power::IPowerHintSession;
using android::hardware::power::Mode;
using android::hardware::power::WorkDuration;

const std::vector<Boost> kBoosts{ndk::enum_range<Boost>().begin(), ndk::enum_range<Boost>().end()};

const std::vector<Mode> kModes{ndk::enum_range<Mode>().begin(), ndk::enum_range<Mode>().end()};

const std::vector<Boost> kInvalidBoosts = {
        static_cast<Boost>(static_cast<int32_t>(kBoosts.front()) - 1),
        static_cast<Boost>(static_cast<int32_t>(kBoosts.back()) + 1),
};

const std::vector<Mode> kInvalidModes = {
        static_cast<Mode>(static_cast<int32_t>(kModes.front()) - 1),
        static_cast<Mode>(static_cast<int32_t>(kModes.back()) + 1),
};

class DurationWrapper : public WorkDuration {
  public:
    DurationWrapper(int64_t dur, int64_t time) {
        durationNanos = dur;
        timeStampNanos = time;
    }
};

const std::vector<int32_t> kSelfTids = {
        gettid(),
};

const std::vector<int32_t> kEmptyTids = {};

const std::vector<WorkDuration> kNoDurations = {};

const std::vector<WorkDuration> kDurationsWithZero = {
        DurationWrapper(1000L, 1L),
        DurationWrapper(0L, 2L),
};

const std::vector<WorkDuration> kDurationsWithNegative = {
        DurationWrapper(1000L, 1L),
        DurationWrapper(-1000L, 2L),
};

const std::vector<WorkDuration> kDurations = {
        DurationWrapper(1L, 1L),
        DurationWrapper(1000L, 2L),
        DurationWrapper(1000000L, 3L),
        DurationWrapper(1000000000L, 4L),
};

inline bool isUnknownOrUnsupported(const ndk::ScopedAStatus& status) {
    return status.getStatus() == STATUS_UNKNOWN_TRANSACTION ||
           status.getExceptionCode() == EX_UNSUPPORTED_OPERATION;
}

class PowerAidl : public testing::TestWithParam<std::string> {
  public:
    virtual void SetUp() override {
        AIBinder* binder = AServiceManager_waitForService(GetParam().c_str());
        ASSERT_NE(binder, nullptr);
        power = IPower::fromBinder(ndk::SpAIBinder(binder));
    }

    std::shared_ptr<IPower> power;
};

TEST_P(PowerAidl, setMode) {
    for (const auto& mode : kModes) {
        ASSERT_TRUE(power->setMode(mode, true).isOk());
        ASSERT_TRUE(power->setMode(mode, false).isOk());
    }
    for (const auto& mode : kInvalidModes) {
        ASSERT_TRUE(power->setMode(mode, true).isOk());
        ASSERT_TRUE(power->setMode(mode, false).isOk());
    }
}

TEST_P(PowerAidl, isModeSupported) {
    for (const auto& mode : kModes) {
        bool supported;
        ASSERT_TRUE(power->isModeSupported(mode, &supported).isOk());
    }
    for (const auto& mode : kInvalidModes) {
        bool supported;
        ASSERT_TRUE(power->isModeSupported(mode, &supported).isOk());
        // Should return false for values outside enum
        ASSERT_FALSE(supported);
    }
}

TEST_P(PowerAidl, setBoost) {
    for (const auto& boost : kBoosts) {
        ASSERT_TRUE(power->setBoost(boost, 0).isOk());
        ASSERT_TRUE(power->setBoost(boost, 1000).isOk());
        ASSERT_TRUE(power->setBoost(boost, -1).isOk());
    }
    for (const auto& boost : kInvalidBoosts) {
        ASSERT_TRUE(power->setBoost(boost, 0).isOk());
        ASSERT_TRUE(power->setBoost(boost, 1000).isOk());
        ASSERT_TRUE(power->setBoost(boost, -1).isOk());
    }
}

TEST_P(PowerAidl, isBoostSupported) {
    for (const auto& boost : kBoosts) {
        bool supported;
        ASSERT_TRUE(power->isBoostSupported(boost, &supported).isOk());
    }
    for (const auto& boost : kInvalidBoosts) {
        bool supported;
        ASSERT_TRUE(power->isBoostSupported(boost, &supported).isOk());
        // Should return false for values outside enum
        ASSERT_FALSE(supported);
    }
}

TEST_P(PowerAidl, getHintSessionPreferredRate) {
    int64_t rate = -1;
    auto status = power->getHintSessionPreferredRate(&rate);
    if (!status.isOk()) {
        EXPECT_TRUE(isUnknownOrUnsupported(status));
        return;
    }

    // At least 1ms rate limit from HAL
    ASSERT_GE(rate, 1000000);
}

TEST_P(PowerAidl, createAndCloseHintSession) {
    std::shared_ptr<IPowerHintSession> session;
    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
    if (!status.isOk()) {
        EXPECT_TRUE(isUnknownOrUnsupported(status));
        return;
    }
    ASSERT_NE(nullptr, session);
    ASSERT_TRUE(session->pause().isOk());
    ASSERT_TRUE(session->resume().isOk());
    // Test normal destroy operation
    ASSERT_TRUE(session->close().isOk());
    session.reset();
}
TEST_P(PowerAidl, createHintSessionFailed) {
    std::shared_ptr<IPowerHintSession> session;
    auto status = power->createHintSession(getpid(), getuid(), kEmptyTids, 16666666L, &session);
    ASSERT_FALSE(status.isOk());
    if (isUnknownOrUnsupported(status)) {
        return;
    }
    ASSERT_EQ(EX_ILLEGAL_ARGUMENT, status.getExceptionCode());
}

TEST_P(PowerAidl, updateAndReportDurations) {
    std::shared_ptr<IPowerHintSession> session;
    auto status = power->createHintSession(getpid(), getuid(), kSelfTids, 16666666L, &session);
    if (!status.isOk()) {
        EXPECT_TRUE(isUnknownOrUnsupported(status));
        return;
    }
    ASSERT_NE(nullptr, session);

    ASSERT_TRUE(session->updateTargetWorkDuration(16666667LL).isOk());
    ASSERT_TRUE(session->reportActualWorkDuration(kDurations).isOk());
}

// FIXED_PERFORMANCE mode is required for all devices which ship on Android 11
// or later
TEST_P(PowerAidl, hasFixedPerformance) {
    auto apiLevel = GetUintProperty<uint64_t>("ro.product.first_api_level", 0);
    if (apiLevel == 0) {
        apiLevel = GetUintProperty<uint64_t>("ro.build.version.sdk", 0);
    }
    ASSERT_NE(apiLevel, 0);

    if (apiLevel >= 30) {
        bool supported;
        ASSERT_TRUE(power->isModeSupported(Mode::FIXED_PERFORMANCE, &supported).isOk());
        ASSERT_TRUE(supported);
    }
}

GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(PowerAidl);
INSTANTIATE_TEST_SUITE_P(Power, PowerAidl,
                         testing::ValuesIn(::android::getAidlHalInstanceNames(IPower::descriptor)),
                         ::android::PrintInstanceNameToString);

}  // namespace

int main(int argc, char** argv) {
    ::testing::InitGoogleTest(&argc, argv);
    ABinderProcess_setThreadPoolMaxThreadCount(1);
    ABinderProcess_startThreadPool();
    return RUN_ALL_TESTS();
}

}  // namespace aidl::android::hardware::power