OpenHarmony-v4.1-Release/s

/*
 * Copyright (C) 2021 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 "call_object_manager.h"

#include "call_connect_ability.h"
#include "call_control_manager.h"
#include "call_manager_errors.h"
#include "call_number_utils.h"
#include "conference_base.h"
#include "ims_conference.h"
#include "report_call_info_handler.h"
#include "telephony_log_wrapper.h"
#include "voip_call.h"

namespace OHOS {
namespace Telephony {
std::list<sptr<CallBase>> CallObjectManager::callObjectPtrList_;
std::mutex CallObjectManager::listMutex_;
int32_t CallObjectManager::callId_ = CALL_START_ID;
std::condition_variable CallObjectManager::cv_;
bool CallObjectManager::isFirstDialCallAdded_ = false;
bool CallObjectManager::needWaitHold_ = false;
CellularCallInfo CallObjectManager::dialCallInfo_;

CallObjectManager::CallObjectManager()
{
}

CallObjectManager::~CallObjectManager()
{
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    while (it != callObjectPtrList_.end()) {
        (*it) = nullptr;
        callObjectPtrList_.erase(it++);
    }
}

int32_t CallObjectManager::AddOneCallObject(sptr<CallBase> &call)
{
    if (call == nullptr) {
        return TELEPHONY_ERR_LOCAL_PTR_NULL;
    }
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallID() == call->GetCallID()) {
            TELEPHONY_LOGE("this call has existed yet!");
            return CALL_ERR_PHONE_CALL_ALREADY_EXISTS;
        }
    }
    CallAttributeInfo info;
    call->GetCallAttributeInfo(info);
    int32_t state;
    bool isVoIPCallExists = false;
    DelayedSingleton<CallControlManager>::GetInstance()->GetVoIPCallState(state);
    if (state == (int32_t)CallStateToApp::CALL_STATE_RINGING) {
        isVoIPCallExists = true;
    }
    if (callObjectPtrList_.size() == NO_CALL_EXIST && (!isVoIPCallExists || info.isEcc)) {
        DelayedSingleton<CallConnectAbility>::GetInstance()->ConnectAbility(info);
    }
    callObjectPtrList_.emplace_back(call);
    if (callObjectPtrList_.size() == ONE_CALL_EXIST &&
        callObjectPtrList_.front()->GetTelCallState() == TelCallState::CALL_STATUS_DIALING) {
        isFirstDialCallAdded_ = true;
        cv_.notify_all();
    }
    TELEPHONY_LOGI("AddOneCallObject success! callId:%{public}d,call list size:%{public}zu", call->GetCallID(),
        callObjectPtrList_.size());
    return TELEPHONY_SUCCESS;
}

int32_t CallObjectManager::DeleteOneCallObject(int32_t callId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallID() == callId) {
            callObjectPtrList_.erase(it);
            TELEPHONY_LOGI("DeleteOneCallObject success! call list size:%{public}zu", callObjectPtrList_.size());
            break;
        }
    }
    if (callObjectPtrList_.size() == NO_CALL_EXIST) {
        DelayedSingleton<CallConnectAbility>::GetInstance()->DisconnectAbility();
    }
    return TELEPHONY_SUCCESS;
}

void CallObjectManager::DeleteOneCallObject(sptr<CallBase> &call)
{
    if (call == nullptr) {
        TELEPHONY_LOGE("call is null!");
        return;
    }
    std::lock_guard<std::mutex> lock(listMutex_);
    callObjectPtrList_.remove(call);
    if (callObjectPtrList_.size() == 0) {
        DelayedSingleton<CallConnectAbility>::GetInstance()->DisconnectAbility();
    }
    TELEPHONY_LOGI("DeleteOneCallObject success! callList size:%{public}zu", callObjectPtrList_.size());
}

sptr<CallBase> CallObjectManager::GetOneCallObject(int32_t callId)
{
    sptr<CallBase> retPtr = nullptr;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = CallObjectManager::callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallID() == callId) {
            retPtr = *it;
            break;
        }
    }
    return retPtr;
}

sptr<CallBase> CallObjectManager::GetOneCallObject(std::string &phoneNumber)
{
    if (phoneNumber.empty()) {
        TELEPHONY_LOGE("call is null!");
        return nullptr;
    }
    sptr<CallBase> retPtr = nullptr;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        std::string networkAddress =
            DelayedSingleton<CallNumberUtils>::GetInstance()->RemovePostDialPhoneNumber((*it)->GetAccountNumber());
        if (networkAddress == phoneNumber) {
            TELEPHONY_LOGI("GetOneCallObject success!");
            retPtr = *it;
            break;
        }
    }
    return retPtr;
}

int32_t CallObjectManager::HasNewCall()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_CREATE ||
            (*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_CONNECTING ||
            (*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_DIALING) {
            TELEPHONY_LOGE("there is already a new call[callId:%{public}d,state:%{public}d], please redial later",
                (*it)->GetCallID(), (*it)->GetCallRunningState());
            return CALL_ERR_CALL_COUNTS_EXCEED_LIMIT;
        }
    }
    return TELEPHONY_SUCCESS;
}

int32_t CallObjectManager::IsNewCallAllowedCreate(bool &enabled)
{
    enabled = true;
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() != CallType::TYPE_VOIP &&
            ((*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_CREATE ||
            (*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_CONNECTING ||
            (*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_DIALING ||
            (*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_RINGING)) {
            TELEPHONY_LOGE("there is already a new call, please redial later");
            enabled = false;
            return TELEPHONY_ERR_SUCCESS;
        }
    }
    int32_t count = 0;
    int32_t callNum = 2;
    std::list<int32_t> callIdList;
    GetCarrierCallList(callIdList);
    for (int32_t otherCallId : callIdList) {
        sptr<CallBase> call = GetOneCallObject(otherCallId);
        if (call != nullptr) {
            TelConferenceState confState = call->GetTelConferenceState();
            int32_t conferenceId = DelayedSingleton<ImsConference>::GetInstance()->GetMainCall();
            if (confState != TelConferenceState::TEL_CONFERENCE_IDLE && conferenceId == otherCallId) {
                TELEPHONY_LOGI("there is conference call");
                count++;
            } else if (confState == TelConferenceState::TEL_CONFERENCE_IDLE) {
                count++;
            }
        }
    }
    TELEPHONY_LOGI("the count is:%{public}d", count);
    if (count >= callNum) {
        enabled = false;
    }
    return TELEPHONY_ERR_SUCCESS;
}

int32_t CallObjectManager::GetCurrentCallNum()
{
    int32_t count = 0;
    std::list<int32_t> callIdList;
    GetCarrierCallList(callIdList);
    for (int32_t otherCallId : callIdList) {
        sptr<CallBase> call = GetOneCallObject(otherCallId);
        if (call != nullptr) {
            TelConferenceState confState = call->GetTelConferenceState();
            int32_t conferenceId = DelayedSingleton<ImsConference>::GetInstance()->GetMainCall();
            if (confState != TelConferenceState::TEL_CONFERENCE_IDLE && conferenceId == otherCallId) {
                TELEPHONY_LOGI("there is conference call");
                count++;
            } else if (confState == TelConferenceState::TEL_CONFERENCE_IDLE) {
                count++;
            }
        }
    }
    TELEPHONY_LOGI("the count is %{public}d", count);
    return count;
}

int32_t CallObjectManager::GetCarrierCallList(std::list<int32_t> &list)
{
    list.clear();
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() == CallType::TYPE_CS || (*it)->GetCallType() == CallType::TYPE_IMS ||
            (*it)->GetCallType() == CallType::TYPE_SATELLITE) {
            list.emplace_back((*it)->GetCallID());
        }
    }
    return TELEPHONY_SUCCESS;
}

bool CallObjectManager::HasRingingMaximum()
{
    int32_t ringingCount = 0;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        // Count the number of calls in the ringing state
        if ((*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_RINGING) {
            ringingCount++;
        }
    }
    if (ringingCount >= RINGING_CALL_NUMBER_LEN) {
        return true;
    }
    return false;
}

bool CallObjectManager::HasDialingMaximum()
{
    int32_t dialingCount = 0;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        // Count the number of calls in the active state
        if ((*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_ACTIVE) {
            dialingCount++;
        }
    }
    if (dialingCount >= DIALING_CALL_NUMBER_LEN) {
        return true;
    }
    return false;
}

int32_t CallObjectManager::HasEmergencyCall(bool &enabled)
{
    enabled = false;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetEmergencyState()) {
            enabled = true;
        }
    }
    return TELEPHONY_ERR_SUCCESS;
}

int32_t CallObjectManager::GetNewCallId()
{
    int32_t ret = 0;
    std::lock_guard<std::mutex> lock(listMutex_);
    ret = ++callId_;
    return ret;
}

bool CallObjectManager::IsCallExist(int32_t callId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallID() == callId) {
            TELEPHONY_LOGW("the call is exist.");
            return true;
        }
    }
    return false;
}

bool CallObjectManager::IsCallExist(std::string &phoneNumber)
{
    if (phoneNumber.empty()) {
        return false;
    }
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        std::string networkAddress =
            DelayedSingleton<CallNumberUtils>::GetInstance()->RemovePostDialPhoneNumber((*it)->GetAccountNumber());
        if (networkAddress == phoneNumber) {
            return true;
        }
    }
    TELEPHONY_LOGI("the call is does not exist.");
    return false;
}

bool CallObjectManager::HasCallExist()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    if (callObjectPtrList_.empty()) {
        TELEPHONY_LOGI("call list size:%{public}zu", callObjectPtrList_.size());
        return false;
    }
    return true;
}

std::list<sptr<CallBase>> CallObjectManager::GetAllCallList()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    return callObjectPtrList_;
}

bool CallObjectManager::HasCellularCallExist()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() == CallType::TYPE_CS || (*it)->GetCallType() == CallType::TYPE_IMS ||
            (*it)->GetCallType() == CallType::TYPE_SATELLITE) {
            return true;
        }
    }
    return false;
}

bool CallObjectManager::HasVoipCallExist()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() == CallType::TYPE_VOIP) {
            return true;
        }
    }
    return false;
}

bool CallObjectManager::HasVideoCall()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetVideoStateType() == VideoStateType::TYPE_VIDEO && (*it)->GetCallType() != CallType::TYPE_VOIP) {
            return true;
        }
    }
    return false;
}

int32_t CallObjectManager::HasRingingCall(bool &enabled)
{
    enabled = false;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        // Count the number of calls in the ringing state
        if ((*it)->GetCallRunningState() == CallRunningState::CALL_RUNNING_STATE_RINGING) {
            enabled = true;
            break;
        }
    }
    return TELEPHONY_ERR_SUCCESS;
}

TelCallState CallObjectManager::GetCallState(int32_t callId)
{
    TelCallState retState = TelCallState::CALL_STATUS_IDLE;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = CallObjectManager::callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallID() == callId) {
            retState = (*it)->GetTelCallState();
            break;
        }
    }
    return retState;
}

sptr<CallBase> CallObjectManager::GetOneCallObject(CallRunningState callState)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::reverse_iterator it;
    for (it = callObjectPtrList_.rbegin(); it != callObjectPtrList_.rend(); ++it) {
        if ((*it)->GetCallRunningState() == callState) {
            return (*it);
        }
    }
    return nullptr;
}

sptr<CallBase> CallObjectManager::GetOneCallObjectByIndex(int32_t index)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallIndex() == index) {
            return (*it);
        }
    }
    return nullptr;
}

sptr<CallBase> CallObjectManager::GetOneCallObjectByIndexAndSlotId(int32_t index, int32_t slotId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallIndex() == index) {
            if ((*it)->GetSlotId() == slotId) {
                return (*it);
            }
        }
    }
    return nullptr;
}

sptr<CallBase> CallObjectManager::GetOneCallObjectByVoipCallId(std::string voipCallId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin();
    for (; it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() == CallType::TYPE_VOIP) {
            sptr<VoIPCall> voipCall = reinterpret_cast<VoIPCall *>((*it).GetRefPtr());
            if (voipCall->GetVoipCallId() == voipCallId) {
                return (*it);
            }
        }
    }
    return nullptr;
}

bool CallObjectManager::IsCallExist(CallType callType, TelCallState callState)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetCallType() == callType && (*it)->GetTelCallState() == callState) {
            return true;
        }
    }
    TELEPHONY_LOGI("the call is does not exist.");
    return false;
}

bool CallObjectManager::IsCallExist(TelCallState callState)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetTelCallState() == callState) {
            return true;
        }
    }
    TELEPHONY_LOGI("the call is does not exist.");
    return false;
}

bool CallObjectManager::IsCallExist(TelCallState callState, int32_t &callId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetTelCallState() == callState) {
            callId = (*it)->GetCallID();
            return true;
        }
    }
    TELEPHONY_LOGI("the call is does not exist.");
    return false;
}

bool CallObjectManager::IsConferenceCallExist(TelConferenceState state, int32_t &callId)
{
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetTelConferenceState() == state) {
            callId = (*it)->GetCallID();
            return true;
        }
    }
    TELEPHONY_LOGI("the call is does not exist.");
    return false;
}

int32_t CallObjectManager::GetCallNum(TelCallState callState)
{
    int32_t num = 0;
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetTelCallState() == callState) {
            ++num;
            continue;
        }
    }
    TELEPHONY_LOGI("callState:%{public}d, num:%{public}d", callState, num);
    return num;
}

std::string CallObjectManager::GetCallNumber(TelCallState callState)
{
    std::string number = "";
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        if ((*it)->GetTelCallState() == callState) {
            number = (*it)->GetAccountNumber();
            break;
        }
    }
    return number;
}

std::vector<CallAttributeInfo> CallObjectManager::GetCallInfoList(int32_t slotId)
{
    std::vector<CallAttributeInfo> callVec;
    CallAttributeInfo info;
    callVec.clear();
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        (void)memset_s(&info, sizeof(CallAttributeInfo), 0, sizeof(CallAttributeInfo));
        (*it)->GetCallAttributeInfo(info);
        if (info.accountId == slotId && info.callType != CallType::TYPE_OTT) {
            callVec.emplace_back(info);
        }
    }
    return callVec;
}

sptr<CallBase> CallObjectManager::GetForegroundLiveCall()
{
    std::lock_guard<std::mutex> lock(listMutex_);
    sptr<CallBase> liveCall = nullptr;
    for (std::list<sptr<CallBase>>::iterator it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        TelCallState telCallState = (*it)->GetTelCallState();
        if (telCallState == TelCallState::CALL_STATUS_WAITING ||
            telCallState == TelCallState::CALL_STATUS_INCOMING) {
            liveCall = (*it);
            break;
        }
        if (telCallState == TelCallState::CALL_STATUS_ALERTING ||
            telCallState == TelCallState::CALL_STATUS_DIALING) {
            liveCall = (*it);
            continue;
        }
        if (telCallState == TelCallState::CALL_STATUS_ACTIVE) {
            liveCall = (*it);
            continue;
        }
        if (telCallState == TelCallState::CALL_STATUS_HOLDING) {
            liveCall = (*it);
            continue;
        }
    }
    return liveCall;
}

CellularCallInfo CallObjectManager::GetDialCallInfo()
{
    return dialCallInfo_;
}

int32_t CallObjectManager::DealFailDial(sptr<CallBase> call)
{
    CallDetailInfo callDetatilInfo;
    if (memset_s(&callDetatilInfo, sizeof(CallDetailInfo), 0, sizeof(CallDetailInfo)) != EOK) {
        TELEPHONY_LOGE("memset_s callDetatilInfo fail");
        return TELEPHONY_ERR_MEMSET_FAIL;
    }
    std::string number = call->GetAccountNumber();
    callDetatilInfo.callType = call->GetCallType();
    callDetatilInfo.accountId = call->GetSlotId();
    callDetatilInfo.state = TelCallState::CALL_STATUS_DISCONNECTED;
    callDetatilInfo.callMode = call->GetVideoStateType();
    callDetatilInfo.voiceDomain = static_cast<int32_t>(call->GetCallType());
    if (number.length() > kMaxNumberLen) {
        TELEPHONY_LOGE("numbser length out of range");
        return CALL_ERR_NUMBER_OUT_OF_RANGE;
    }
    if (memcpy_s(&callDetatilInfo.phoneNum, kMaxNumberLen, number.c_str(), number.length()) != EOK) {
        TELEPHONY_LOGE("memcpy_s number failed!");
        return TELEPHONY_ERR_MEMCPY_FAIL;
    }

    return DelayedSingleton<ReportCallInfoHandler>::GetInstance()->UpdateCallReportInfo(callDetatilInfo);
}

std::vector<CallAttributeInfo> CallObjectManager::GetAllCallInfoList()
{
    std::vector<CallAttributeInfo> callVec;
    callVec.clear();
    std::lock_guard<std::mutex> lock(listMutex_);
    std::list<sptr<CallBase>>::iterator it;
    for (it = callObjectPtrList_.begin(); it != callObjectPtrList_.end(); ++it) {
        CallAttributeInfo info;
        if ((*it) == nullptr) {
            TELEPHONY_LOGE("call is nullptr");
            continue;
        }
        (*it)->GetCallAttributeInfo(info);
        callVec.emplace_back(info);
    }
    return callVec;
}
} // namespace Telephony
} // namespace OHOS