Function sendMessageToUser

components/MessageInput/MessageInput.tsx:66–103

(user, fromUserId)

  }, []);

  const sendMessageToUser = async (user, fromUserId) => {
    // send message
    const ourSecretKey = await getMySecretKey();
    if (!ourSecretKey) {
      return;
    }

    if (!user.publicKey) {
      Alert.alert(
        "The user haven't set his keypair yet",
        "Until the user generates the keypair, you cannot securely send him messages"
      );
      return;
    }

    console.log("private key", ourSecretKey);

    const sharedKey = box.before(
      stringToUint8Array(user.publicKey),
      ourSecretKey
    );
    console.log("shared key", sharedKey);

    const encryptedMessage = encrypt(sharedKey, { message });
    console.log("encrypted message", encryptedMessage);

    const newMessage = await DataStore.save(
      new Message({
        content: encryptedMessage, // <- this messages should be encrypted
        userID: fromUserId,
        forUserId: user.id,
        chatroomID: chatRoom.id,
        replyToMessageID: messageReplyTo?.id,
      })
    );

    // updateLastMessage(newMessage);
  };

  const sendMessage = async () => {
    // get all the users of this chatroom