import { mkdtemp, writeFile } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { join } from 'node:path';

/**
 * Writes the full (untruncated) search results to a temp file the agent can
 * read freely with the `read` tool, sidestepping the inline truncation that
 * hides long log messages and attributes.
 *
 * The `prefix` controls the filename stem (e.g. "logs" → `logs-<ts>.md`,
 * "rum" → `rum-<ts>.md`) so logs and RUM results stay distinguishable on disk.
 *
 * Returns the absolute path to the written file.
 */
export async function writeResultsFile(content: string, prefix = 'logs'): Promise<string> {
  const dir = await mkdtemp(join(tmpdir(), 'pi-datadog-'));
  const path = join(dir, `${prefix}-${Date.now()}.md`);
  await writeFile(path, content, 'utf-8');
  return path;
}