Function addMessage

apps/chat/src/hooks/useChat.js:95–129

(role, content, customId = null, metadata = {})

    };

    const addMessage = (role, content, customId = null, metadata = {}) => {
        let updatedChat = null;
        setChats((prev) => {
            const newChats = prev.map((chat) => {
                if (chat.id === activeChatId) {
                    const newMessage = {
                        id: customId || generateId(),
                        role,
                        content,
                        timestamp: Date.now(),
                        ...metadata,
                    };

                    const updatedMessages = [...chat.messages, newMessage];

                    let updatedTitle = chat.title;
                    if (chat.messages.length === 0 && role === "user") {
                        updatedTitle =
                            content.substring(0, 40) +
                            (content.length > 40 ? "..." : "");
                    }

                    updatedChat = {
                        ...chat,
                        messages: updatedMessages,
                        title: updatedTitle,
                    };
                    return updatedChat;
                }
                return chat;
            });
            return newChats;
        });
        return updatedChat;
    };
    const updateMessage = (messageId, updates) => {
        setChats((prev) =>
            prev.map((chat) => {