chat-ui / src /lib /server /preprocessMessages.ts
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nsarrazin HF staff
Pass websearch to `preprocessMessages` (#876)
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import type { Conversation } from "$lib/types/Conversation";
import type { Message } from "$lib/types/Message";
import { format } from "date-fns";
import { downloadFile } from "./files/downloadFile";
export async function preprocessMessages(
messages: Message[],
webSearch: Message["webSearch"],
multimodal: boolean,
id: Conversation["_id"]
): Promise<Message[]> {
return await Promise.all(
structuredClone(messages).map(async (message, idx) => {
// start by adding websearch to the last message
if (idx === messages.length - 1 && webSearch && webSearch.context) {
const lastQuestion = messages.findLast((el) => el.from === "user")?.content ?? "";
const previousQuestions = messages
.filter((el) => el.from === "user")
.slice(0, -1)
.map((el) => el.content);
const currentDate = format(new Date(), "MMMM d, yyyy");
message.content = `I searched the web using the query: ${webSearch.searchQuery}.
Today is ${currentDate} and here are the results:
=====================
${webSearch.context}
=====================
${previousQuestions.length > 0 ? `Previous questions: \n- ${previousQuestions.join("\n- ")}` : ""}
Answer the question: ${lastQuestion}`;
}
// handle files if model is multimodal
if (multimodal) {
if (message.files && message.files.length > 0) {
const markdowns = await Promise.all(
message.files.map(async (hash) => {
try {
const { content: image, mime } = await downloadFile(hash, id);
const b64 = image.toString("base64");
return `![](data:${mime};base64,${b64})})`;
} catch (e) {
console.error(e);
}
})
);
message.content += markdowns.join("\n ");
} else {
// if no image, append an empty white image
message.content +=
"\n![](data:image/png;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAARCAAQABADAREAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD+/igAoAKACgD/2Q==)";
}
}
return message;
})
);
}