import { getAllFiles } from 'get-all-files';
import path from "path";
import fs from "fs/promises";
import os from "os";

const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), "test-get-all-files-"));
let tempDirResolve;
let tempDirPromise = new Promise(res => tempDirResolve = res);
tempDirPromise = tempDirPromise.then(() => fs.rm(tempDir, { recursive: true }));

/**
 * 
 * @param {RegExp?} excludeDirFilter
 */
async function runTest(excludeDirFilter) {
  const options = {};
  if (excludeDirFilter instanceof RegExp) {
    options.isExcludedDir = dirName => excludeDirFilter.test(dirName);
  }
  else if (typeof excludeDirFilter === "string") {
    options.isExcludedDir = dirName => dirName.includes(excludeDirFilter);
  }

  try {
    console.log("Start", excludeDirFilter || "no filter")
    let results = await getAllFiles(tempDir, options).toArray();
    console.log("Close", excludeDirFilter || "no filter", results);
  }
  catch (ex) {
    console.log(excludeDirFilter, "exception thrown");
    throw ex;
  }
}

try {
  await fs.mkdir(path.join(tempDir, "cat", "foo"), { recursive: true });
  await fs.mkdir(path.join(tempDir, "spec", "one"), { recursive: true });
  await fs.mkdir(path.join(tempDir, "spec", "two"), { recursive: true });
  await fs.mkdir(path.join(tempDir, "dog", "car"), { recursive: true });

  const fileList = [
    "cat/foo/module1.mjs",
    "cat/foo/module2.mjs",
    "dog/car/module3.mjs",
    "spec/one/module4.mjs",
    "spec/two/module5.mjs",
    "spec/two/module6.mjs",
  ];

  await Promise.all(fileList.map(relativePath => {
    return fs.writeFile(
      path.join(tempDir, relativePath),
      `console.log("Hello World");\n`,
      { encoding: "utf-8" }
    );
  }));

  console.log("tempDir: " + tempDir);
  await runTest();
  await runTest("elephant");
  await runTest("cat");
  await runTest("monkey");
  /*
  await runTest(/elephant/);
  await runTest(/cat/);
  await runTest(/monkey/);
  */
  console.log("Completed tests");
}

finally {
  tempDirResolve();
  await tempDirPromise;
  console.error("exiting");
}