tencent cloud

// Set not to receive messages no matter whether the user is online or offline

NSArray* array = [NSArray arrayWithObjects:@"user1", @"user2", nil]];
[[V2TIMManager sharedInstance] setC2CReceiveMessageOpt:array opt:V2TIM_NOT_RECEIVE_MESSAGE succ:^{
    NSLog(@"success");
} fail:^(int code, NSString *desc) {
    NSLog(@"failure, code:%d, desc:%@", code, desc);
}];

class Callback final : public V2TIMCallback {
public:
    using SuccessCallback = std::function<void()>;
    using ErrorCallback = std::function<void(int, const V2TIMString&)>;

    Callback() = default;
    ~Callback() override = default;

    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
        success_callback_ = std::move(success_callback);
        error_callback_ = std::move(error_callback);
    }

    void OnSuccess() override {
        if (success_callback_) {
            success_callback_();
        }
    }
    void OnError(int error_code, const V2TIMString& error_message) override {
        if (error_callback_) {
            error_callback_(error_code, error_message);
        }
    }

private:
    SuccessCallback success_callback_;
    ErrorCallback error_callback_;
};

V2TIMStringVector userIDList;
userIDList.PushBack("user1");
userIDList.PushBack("user2");
V2TIMReceiveMessageOpt opt = V2TIMReceiveMessageOpt::V2TIM_NOT_RECEIVE_MESSAGE;

auto callback = new Callback;
callback->SetCallback(
    [=]() {
        // Configured successfully
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Failed to configure
        delete callback;
    });

V2TIMManager::GetInstance()->GetMessageManager()->SetC2CReceiveMessageOpt(userIDList, opt, callback);

NSArray* array = [NSArray arrayWithObjects:@"user1", @"user2", nil]];
[[V2TIMManager sharedInstance] getC2CReceiveMessageOpt:array succ:^(NSArray<V2TIMReceiveMessageOptInfo *> *optList) {
    for (int i = 0; i < optList.count; i++) {
        V2TIMReceiveMessageOptInfo* info = optList[i];
        NSLog(@"userId: %@, receiveOpt: %@", info.userID, info.receiveOpt);
    }
} fail:^(int code, NSString *desc) {
    NSLog(@"failure, code:%d, desc:%@", code, desc);
}];

template <class T>
class ValueCallback final : public V2TIMValueCallback<T> {
public:
    using SuccessCallback = std::function<void(const T&)>;
    using ErrorCallback = std::function<void(int, const V2TIMString&)>;

    ValueCallback() = default;
    ~ValueCallback() override = default;

    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
        success_callback_ = std::move(success_callback);
        error_callback_ = std::move(error_callback);
    }

    void OnSuccess(const T& value) override {
        if (success_callback_) {
            success_callback_(value);
        }
    }
    void OnError(int error_code, const V2TIMString& error_message) override {
        if (error_callback_) {
            error_callback_(error_code, error_message);
        }
    }

private:
    SuccessCallback success_callback_;
    ErrorCallback error_callback_;
};

V2TIMStringVector userIDList;
userIDList.PushBack("user1");
userIDList.PushBack("user2");

auto callback = new ValueCallback<V2TIMReceiveMessageOptInfoVector>{};
callback->SetCallback(
    [=](const V2TIMReceiveMessageOptInfoVector& receiveMessageOptInfoList) {
        for (size_t i = 0; i < receiveMessageOptInfoList.Size(); ++i) {
            const V2TIMReceiveMessageOptInfo& opt = receiveMessageOptInfoList[i];
            V2TIMString userID = opt.userID;
            V2TIMReceiveMessageOpt receiveOpt = opt.receiveOpt;
        }

        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Failed to obtain
        delete callback;
    });

V2TIMManager::GetInstance()->GetMessageManager()->GetC2CReceiveMessageOpt(userIDList, callback);