Improve add friend logging/dialogs

rpcs3/Emu/NP/rpcn_client.cpp

@@ -1467,7 +1467,7 @@ namespace rpcn
 		return error;
 	}
 
-	bool rpcn_client::add_friend(const std::string& friend_username)
+	std::optional<ErrorType> rpcn_client::add_friend(const std::string& friend_username)
 	{
 		std::vector<u8> data;
 		std::copy(friend_username.begin(), friend_username.end(), std::back_inserter(data));
@@ -1478,19 +1478,18 @@ namespace rpcn
 		std::vector<u8> packet_data;
 		if (!forge_send_reply(CommandType::AddFriend, req_id, data, packet_data))
 		{
-			return false;
+			return std::nullopt;
 		}
 
 		vec_stream reply(packet_data);
-		auto error = static_cast<ErrorType>(reply.get<u8>());
+		const auto error = static_cast<ErrorType>(reply.get<u8>());
 
-		if (error != rpcn::ErrorType::NoError)
-		{
-			return false;
-		}
+		if (error == ErrorType::NoError)
+			rpcn_log.success("add_friend(\"%s\") succeeded", friend_username);
+		else
+			rpcn_log.error("add_friend(\"%s\") failed with error: %s", error);
 
-		rpcn_log.success("You have successfully added \"%s\" as a friend", friend_username);
-		return true;
+		return error;
 	}
 
 	bool rpcn_client::remove_friend(const std::string& friend_username)

rpcs3/Emu/NP/rpcn_client.h

@@ -293,7 +293,7 @@ namespace rpcn
 		ErrorType send_reset_token(std::string_view npid, std::string_view email);
 		ErrorType reset_password(std::string_view npid, std::string_view token, std::string_view password);
 		ErrorType delete_account();
-		bool add_friend(const std::string& friend_username);
+		std::optional<ErrorType> add_friend(const std::string& friend_username);
 		bool remove_friend(const std::string& friend_username);
 
 		u32 get_num_friends();

rpcs3/rpcs3qt/rpcn_settings_dialog.cpp

@@ -1262,13 +1262,10 @@ rpcn_friends_dialog::rpcn_friends_dialog(QWidget* parent)
 
 			connect(accept_request_action, &QAction::triggered, this, [this, str_sel_friend]()
 				{
-					if (!m_rpcn->add_friend(str_sel_friend))
-					{
-						QMessageBox::critical(this, tr("Error adding a friend!"), tr("An error occurred while trying to add a friend!"), QMessageBox::Ok);
-					}
-					else
+					if (add_friend_with_error_dialog(str_sel_friend))
 					{
 						QMessageBox::information(this, tr("Friend added!"), tr("You've successfully added a friend!"), QMessageBox::Ok);
+						return;
 					}
 				});
 
@@ -1304,11 +1301,8 @@ rpcn_friends_dialog::rpcn_friends_dialog(QWidget* parent)
 
 			connect(send_friend_request_action, &QAction::triggered, this, [this, str_sel_friend]()
 				{
-					if (!m_rpcn->add_friend(str_sel_friend))
-					{
-						QMessageBox::critical(this, tr("Error sending a friend request!"), tr("An error occurred while trying to send a friend request!"), QMessageBox::Ok);
+					if (!add_friend_with_error_dialog(str_sel_friend))
 						return;
-					}
 
 					QString qstr_friend = QString::fromStdString(str_sel_friend);
 					add_update_list(m_lst_requests, qstr_friend, m_icon_request_sent, QVariant(false));
@@ -1341,11 +1335,7 @@ rpcn_friends_dialog::rpcn_friends_dialog(QWidget* parent)
 				QMessageBox::critical(this, tr("Error validating username!"), tr("The username you entered is invalid!"), QMessageBox::Ok);
 			}
 
-			if (!m_rpcn->add_friend(str_friend_username))
-			{
-				QMessageBox::critical(this, tr("Error adding friend!"), tr("An error occurred while adding a friend!"), QMessageBox::Ok);
-			}
-			else
+			if (add_friend_with_error_dialog(str_friend_username))
 			{
 				add_update_list(m_lst_requests, QString::fromStdString(str_friend_username), m_icon_request_sent, QVariant(false));
 				QMessageBox::information(this, tr("Friend added!"), tr("Friend was successfully added!"), QMessageBox::Ok);
@@ -1360,6 +1350,42 @@ rpcn_friends_dialog::~rpcn_friends_dialog()
 	m_rpcn->remove_friend_cb(friend_callback, this);
 }
 
+bool rpcn_friends_dialog::add_friend_with_error_dialog(const std::string& friend_username)
+{
+	QString err_msg;
+	const auto opt_error = m_rpcn->add_friend(friend_username);
+
+	if (opt_error.has_value())
+	{
+		const auto error = opt_error.value();
+
+		if (error != rpcn::ErrorType::NoError)
+		{
+			switch (error)
+			{
+			case rpcn::ErrorType::NotFound: err_msg = tr("The specified username does not exist."); break;
+			case rpcn::ErrorType::InvalidInput: err_msg = tr("You cannot add yourself as a friend."); break;
+			case rpcn::ErrorType::Blocked: err_msg = tr("You or the other user have the other blocked."); break;
+			case rpcn::ErrorType::AlreadyFriend: err_msg = tr("You are already friends with this user."); break;
+			case rpcn::ErrorType::DbFail: err_msg = tr("A database error occurred. Please try again later."); break;
+			default: err_msg = tr("An unexpected error occurred."); break;
+			}
+		}
+	}
+	else
+	{
+		err_msg = tr("Failed to send the friend request.");
+	}
+
+	if (!err_msg.isEmpty())
+	{
+		QMessageBox::critical(this, tr("Friend Request Failed"), err_msg, QMessageBox::Ok);
+		return false;
+	}
+
+	return true;
+}
+
 bool rpcn_friends_dialog::is_ok() const
 {
 	return m_rpcn_ok;

rpcs3/rpcs3qt/rpcn_settings_dialog.h

@@ -121,6 +121,7 @@ public:
 private:
 	void add_update_list(QListWidget* list, const QString& name, const QIcon& icon, const QVariant& data);
 	void remove_list(QListWidget* list, const QString& name);
+	bool add_friend_with_error_dialog(const std::string& friend_username);
 
 private Q_SLOTS:
 	void add_update_friend(const QString& name, bool status);