/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * 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 "missionlistmanagerfourth_fuzzer.h"

#include <cstddef>
#include <cstdint>

#define private public
#include "mission_info_mgr.h"
#include "mission_list_manager.h"
#undef private

#include "ability_record.h"

using namespace OHOS::AAFwk;
using namespace OHOS::AppExecFwk;

namespace OHOS {
namespace {
constexpr size_t FOO_MAX_LEN = 1024;
constexpr size_t U32_AT_SIZE = 4;
constexpr uint8_t ENABLE = 2;
class MyAbilityConnection : public IAbilityConnection {
public:
    MyAbilityConnection() = default;
    virtual ~MyAbilityConnection() = default;
    void OnAbilityConnectDone(const AppExecFwk::ElementName &element,
                              const sptr<IRemoteObject> &remoteObject,
                              int resultCode) override {}
    void OnAbilityDisconnectDone(const AppExecFwk::ElementName &element,
                                 int resultCode) override {}
    sptr<IRemoteObject> AsObject() override { return {}; }
};
} // namespace

uint32_t GetU32Data(const char *ptr)
{
    // convert fuzz input data to an integer
    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}

std::shared_ptr<AbilityRecord> GetFuzzAbilityRecord()
{
    sptr<Token> token = nullptr;
    AbilityRequest abilityRequest;
    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
    abilityRequest.abilityInfo.name = "MainAbility";
    abilityRequest.abilityInfo.type = AbilityType::DATA;
    std::shared_ptr<AbilityRecord> abilityRecord =
        AbilityRecord::CreateAbilityRecord(abilityRequest);
    if (!abilityRecord) {
        return nullptr;
    }
    return abilityRecord;
}

sptr<Token> GetFuzzAbilityToken()
{
    sptr<Token> token = nullptr;
    std::shared_ptr<AbilityRecord> abilityRecord = GetFuzzAbilityRecord();
    if (abilityRecord) {
        token = abilityRecord->GetToken();
    }
    return token;
}

bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
{
    bool boolParam = *data % ENABLE;
    int intParam = static_cast<int>(GetU32Data(data));
    Parcel wantParcel;
    Want *want = nullptr;
    if (wantParcel.WriteBuffer(data, size)) {
        want = Want::Unmarshalling(wantParcel);
        if (!want) {
            return false;
        }
    }
    std::shared_ptr<AbilityRecord> abilityRecord = GetFuzzAbilityRecord();
    sptr<IRemoteObject> token = GetFuzzAbilityToken();
    auto missionListManager = std::make_shared<MissionListManager>(intParam);
    auto launcherList = std::make_shared<MissionList>(MissionListType::LAUNCHER);
    missionListManager->launcherList_ = launcherList;
    missionListManager->defaultStandardList_ =
        std::make_shared<MissionList>(MissionListType::DEFAULT_STANDARD);
    missionListManager->defaultSingleList_ =
        std::make_shared<MissionList>(MissionListType::DEFAULT_SINGLE);
    missionListManager->currentMissionLists_.push_front(launcherList);
    if (!missionListManager->listenerController_) {
        missionListManager->listenerController_ =
            std::make_shared<MissionListenerController>();
    }
    DelayedSingleton<MissionInfoMgr>::GetInstance()->taskDataPersistenceMgr_ =
        DelayedSingleton<TaskDataPersistenceMgr>::GetInstance();
    std::shared_ptr<MissionList> missionList = std::make_shared<MissionList>();
    missionListManager->TerminateAbilityLocked(abilityRecord, boolParam);
    missionListManager->RemoveTerminatingAbility(abilityRecord, boolParam);
    missionListManager->RemoveMissionList(missionList);
    missionListManager->DispatchTerminate(abilityRecord);
    missionListManager->DelayCompleteTerminate(abilityRecord);
    missionListManager->CompleteTerminate(abilityRecord);
    missionListManager->CompleteTerminateAndUpdateMission(abilityRecord);
    missionListManager->GetAbilityFromTerminateList(token);
    missionListManager->SetMissionLockedState(intParam, boolParam);
    if (want) {
        delete want;
        want = nullptr;
    }
    return true;
}
} // namespace OHOS

/* Fuzzer entry point */
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
    /* Run your code on data */
    if (data == nullptr) {
        return 0;
    }
    /* Validate the length of size */
    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
        return 0;
    }
    char *ch = (char *)malloc(size + 1);
    if (ch == nullptr) {
        std::cout << "malloc failed." << std::endl;
        return 0;
    }
    (void)memset_s(ch, size + 1, 0x00, size + 1);
    if (memcpy_s(ch, size, data, size) != EOK) {
        std::cout << "copy failed." << std::endl;
        free(ch);
        ch = nullptr;
        return 0;
    }
    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
    free(ch);
    ch = nullptr;
    return 0;
}