#!/usr/bin/env node

import { readdir, readFile, stat } from "node:fs/promises";
import { join, relative } from "node:path";

const root = new URL("..", import.meta.url).pathname;
const scannedExtensions = new Set([".md", ".json", ".ts", ".js", ".mjs", ".sh"]);
const installSpecificPath = ["", "Users", "stefano"].join("/");
const forbidden = [
  {
    pattern: installSpecificPath,
    message: "Source files must not hardcode this install path"
  }
];

function extensionOf(path) {
  const dot = path.lastIndexOf(".");
  return dot === -1 ? "" : path.slice(dot);
}

async function walk(dir) {
  const entries = await readdir(dir);
  const files = [];
  for (const entry of entries) {
    if (["node_modules", "dist", "coverage", "tmp", "out"].includes(entry)) {
      continue;
    }
    const path = join(dir, entry);
    const info = await stat(path);
    if (info.isDirectory()) {
      files.push(...await walk(path));
    } else if (scannedExtensions.has(extensionOf(path)) || entry === "SKILL.md") {
      files.push(path);
    }
  }
  return files;
}

const failures = [];
for (const file of await walk(root)) {
  const text = await readFile(file, "utf8");
  for (const rule of forbidden) {
    if (text.includes(rule.pattern)) {
      failures.push(`${relative(root, file)}: ${rule.message}`);
    }
  }
}

if (failures.length > 0) {
  for (const failure of failures) {
    console.error(failure);
  }
  process.exitCode = 1;
}