tencent cloud

// Block a user
[[V2TIMManager sharedInstance] addToBlackList:@[@"user1", @"user2"] succ:^(NSArray<V2TIMFriendOperationResult *> *resultList) {
    // User blocked successfully
} fail:^(int code, NSString *desc) {
    // Failed to block the user
}];

// Listen for the notification of a user added to the blocklist
[[V2TIMManager sharedInstance] addFriendListener:self];
- (void)onBlackListAdded:(NSArray<V2TIMFriendInfo *>*)infoList {
    // A user was added to the blocklist.
}

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(u8"user1");
userIDList.PushBack(u8"user2");

auto callback = new ValueCallback<V2TIMFriendOperationResultVector>{};
callback->SetCallback(
    [=](const V2TIMFriendOperationResultVector& friendOperationResultList) {
        // User blocked successfully
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Failed to block the user
        delete callback;
    });

V2TIMManager::GetInstance()->GetFriendshipManager()->AddToBlackList(userIDList, callback);

// Listen for the notification of a user added to the blocklist
class FriendshipListener final : public V2TIMFriendshipListener {
public:
    void OnBlackListAdded(const V2TIMFriendInfoVector& infoList) override {
        // A user was added to the blocklist.
    }
    // Other members …
};
// Add a relationship chain event listener. Keep `friendshipListener` valid before the listener is removed to ensure event callbacks are received.
FriendshipListener friendshipListener;
V2TIMManager::GetInstance()->GetFriendshipManager()->AddFriendListener(&friendshipListener);

// Unblock a user
[[V2TIMManager sharedInstance] deleteFromBlackList:@[@"user1", @"user2"] succ:^(NSArray<V2TIMFriendOperationResult *> *resultList) {
    // User unblocked successfully
} fail:^(int code, NSString *desc) {
    // Failed to unblock the user
}];

// Listen for the notification of a user removed from the blocklist
[[V2TIMManager sharedInstance] addFriendListener:self];
- (void)onBlackListDeleted:(NSArray*)userIDList {
    // A user was removed from the blocklist.
}