#!/usr/bin/env node
import { appendFileSync, mkdirSync, readFileSync } from "node:fs";
import { join } from "node:path";
import { execSync } from "node:child_process";

function rootDir() {
  try {
    return execSync("git rev-parse --show-toplevel", {
      cwd: process.cwd(),
      encoding: "utf8",
      stdio: ["ignore", "pipe", "ignore"],
    }).trim();
  } catch {
    return process.cwd();
  }
}

function readStdin() {
  try {
    return JSON.parse(readFileSync(0, "utf8") || "{}");
  } catch {
    return {};
  }
}

const payload = readStdin();
const root = rootDir();
mkdirSync(join(root, ".omx", "logs"), { recursive: true });
const exitCode =
  typeof payload?.tool_output?.exit_code === "number"
    ? payload.tool_output.exit_code
    : typeof payload?.exit_code === "number"
      ? payload.exit_code
      : null;
const status = exitCode ?? "unknown";
const isExplicitBashFailure = payload?.tool_name === "Bash" && exitCode !== null && exitCode !== 0;
appendFileSync(
  join(root, ".omx", "logs", "hooks.log"),
  `${new Date().toISOString()} PostToolUse status=${status} ${JSON.stringify(payload)}\n`,
  "utf8",
);

process.stdout.write(JSON.stringify({
  continue: true,
  hookSpecificOutput: {
    hookEventName: "PostToolUse",
    additionalContext: isExplicitBashFailure ? "OMX noticed a failing Bash command. Check the team inbox or diagnostics." : "",
  },
}));