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import { mkdtempSync, writeFileSync } from "node:fs";

import { mkdtemp, writeFile, rm } from "node:fs/promises";

import { tmpdir } from "node:os";

import { join } from "node:path";

/**

* Creates a temporary file with a custom filename, passes it to the callback function, and ensures cleanup

* @param filename The filename to use for the temporary file

* @param callback Function that receives the path to the temporary file

* @param content Optional content to write to the file

* @returns Whatever the callback returns

export async function withTempFile<T>(

filename: string,

callback: (filePath: string) => Promise<T>,

content: string | Buffer = ""

): Promise<T> {

// Create temporary directory with random suffix

const tempDir = await mkdtemp(join(tmpdir(), "app-"));

const tempFile = join(tempDir, filename);

try {

// Write to the temporary file with appropriate permissions

await writeFile(tempFile, content, { mode: 0o600 });

// Use the file

return await callback(tempFile);

} finally {

// Clean up

await rm(tempDir, { recursive: true, force: true });

}

export function createTempFileSync(filename: string, content: string | Buffer = ""): string {

const tempDir = mkdtempSync(join(tmpdir(), "app-"));

const tempFile = join(tempDir, filename);

writeFileSync(tempFile, content, { mode: 0o600 });

return tempFile;

}