import path from "path";
import { existsSync, mkdirSync, writeFileSync } from "fs";
import grabDirNames from "../utils/grab-dir-names";
const { BUNX_BUNDLER_ERROR_EXIT_FILE } = grabDirNames();
/**
 * Writes the `BUNDLER_EXIT.txt` flag that the bundler pipeline watches to
 * detect that the dev/prod child process previously crashed.
 *
 * Guardrails:
 * - Never writes for clean exits (exitCode === 0) or signal deaths where no
 *   error is available (Ctrl+C must not leave a stale error file behind).
 * - The supervisor writes only when the file does not already exist, so the
 *   crash handler's richer error/stack payload is not clobbered.
 */
export default function writeErrorFile({ force, error, exitCode, }) {
    const has_error = error != null;
    const abnormal_exit = exitCode != null && exitCode !== 0;
    if (!has_error && !abnormal_exit)
        return;
    if (!force && existsSync(BUNX_BUNDLER_ERROR_EXIT_FILE))
        return;
    const err = error instanceof Error
        ? error
        : typeof error === "string"
            ? new Error(error)
            : undefined;
    const message = err?.message || "Unknown error";
    const stack = err?.stack || "N/A";
    let txt = ``;
    txt += `Bunext Error\n`;
    txt += `============================================\n`;
    txt += `ERROR: ${message}\n`;
    txt += `EXIT_CODE: ${exitCode ?? "N/A"}\n`;
    txt += `CALL_STACK:\n${stack}\n`;
    try {
        mkdirSync(path.dirname(BUNX_BUNDLER_ERROR_EXIT_FILE), {
            recursive: true,
        });
        writeFileSync(BUNX_BUNDLER_ERROR_EXIT_FILE, txt);
    }
    catch { }
}