import type { ResponseInputItem } from "openai/resources/responses/responses";

import { fileTypeFromBuffer } from "file-type";

import fs from "fs/promises";

import path from "path";

export async function createInputItem(

text: string,

images: Array<string>,

): Promise<ResponseInputItem.Message> {

const inputItem: ResponseInputItem.Message = {

role: "user",

content: [{ type: "input_text", text }],

type: "message",

};

for (const filePath of images) {

try {

/* eslint-disable no-await-in-loop */

const binary = await fs.readFile(filePath);

const kind = await fileTypeFromBuffer(binary);

/* eslint-enable no-await-in-loop */

const encoded = binary.toString("base64");

const mime = kind?.mime ?? "application/octet-stream";

inputItem.content.push({

type: "input_image",

detail: "auto",

image_url: `data:${mime};base64,${encoded}`,

});

} catch (err) {

inputItem.content.push({

type: "input_text",

text: `[missing image: ${path.basename(filePath)}]`,

});

}

}

return inputItem;

}