tencent cloud

NSString *conversationID = @"conversationID";
NSString *draftText = "The draft text";
[[V2TIMManager sharedInstance] setConversationDraft:conversationID draftText:draftText 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_;
};

V2TIMString conversationID = u8"conversationID";
V2TIMString draftText = u8"The draft text";

auto callback = new Callback;
callback->SetCallback(
    [=]() {
        // Set the conversation draft successfully
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // Failed to set the conversation draft
        delete callback;
    });

V2TIMManager::GetInstance()->GetConversationManager()->SetConversationDraft(conversationID, draftText,
                                                                            callback);