// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { testPerm, assert, assertEquals } from "./test_util.ts";

// TODO Add tests for modified, accessed, and created fields once there is a way
// to create temp files.
testPerm({ read: true }, async function statSyncSuccess(): Promise<void> {
  const packageInfo = Deno.statSync("README.md");
  assert(packageInfo.isFile());
  assert(!packageInfo.isSymlink());

  const modulesInfo = Deno.statSync("cli/tests/symlink_to_subdir");
  assert(modulesInfo.isDirectory());
  assert(!modulesInfo.isSymlink());

  const testsInfo = Deno.statSync("cli/tests");
  assert(testsInfo.isDirectory());
  assert(!testsInfo.isSymlink());
});

testPerm({ read: false }, async function statSyncPerm(): Promise<void> {
  let caughtError = false;
  try {
    Deno.statSync("README.md");
  } catch (e) {
    caughtError = true;
    assert(e instanceof Deno.errors.PermissionDenied);
  }
  assert(caughtError);
});

testPerm({ read: true }, async function statSyncNotFound(): Promise<void> {
  let caughtError = false;
  let badInfo;

  try {
    badInfo = Deno.statSync("bad_file_name");
  } catch (err) {
    caughtError = true;
    assert(err instanceof Deno.errors.NotFound);
  }

  assert(caughtError);
  assertEquals(badInfo, undefined);
});

testPerm({ read: true }, async function lstatSyncSuccess(): Promise<void> {
  const packageInfo = Deno.lstatSync("README.md");
  assert(packageInfo.isFile());
  assert(!packageInfo.isSymlink());

  const modulesInfo = Deno.lstatSync("cli/tests/symlink_to_subdir");
  assert(!modulesInfo.isDirectory());
  assert(modulesInfo.isSymlink());

  const coreInfo = Deno.lstatSync("core");
  assert(coreInfo.isDirectory());
  assert(!coreInfo.isSymlink());
});

testPerm({ read: false }, async function lstatSyncPerm(): Promise<void> {
  let caughtError = false;
  try {
    Deno.lstatSync("README.md");
  } catch (e) {
    caughtError = true;
    assert(e instanceof Deno.errors.PermissionDenied);
  }
  assert(caughtError);
});

testPerm({ read: true }, async function lstatSyncNotFound(): Promise<void> {
  let caughtError = false;
  let badInfo;

  try {
    badInfo = Deno.lstatSync("bad_file_name");
  } catch (err) {
    caughtError = true;
    assert(err instanceof Deno.errors.NotFound);
  }

  assert(caughtError);
  assertEquals(badInfo, undefined);
});

testPerm({ read: true }, async function statSuccess(): Promise<void> {
  const packageInfo = await Deno.stat("README.md");
  assert(packageInfo.isFile());
  assert(!packageInfo.isSymlink());

  const modulesInfo = await Deno.stat("cli/tests/symlink_to_subdir");
  assert(modulesInfo.isDirectory());
  assert(!modulesInfo.isSymlink());

  const testsInfo = await Deno.stat("cli/tests");
  assert(testsInfo.isDirectory());
  assert(!testsInfo.isSymlink());
});

testPerm({ read: false }, async function statPerm(): Promise<void> {
  let caughtError = false;
  try {
    await Deno.stat("README.md");
  } catch (e) {
    caughtError = true;
    assert(e instanceof Deno.errors.PermissionDenied);
  }
  assert(caughtError);
});

testPerm({ read: true }, async function statNotFound(): Promise<void> {
  let caughtError = false;
  let badInfo;

  try {
    badInfo = await Deno.stat("bad_file_name");
  } catch (err) {
    caughtError = true;
    assert(err instanceof Deno.errors.NotFound);
  }

  assert(caughtError);
  assertEquals(badInfo, undefined);
});

testPerm({ read: true }, async function lstatSuccess(): Promise<void> {
  const packageInfo = await Deno.lstat("README.md");
  assert(packageInfo.isFile());
  assert(!packageInfo.isSymlink());

  const modulesInfo = await Deno.lstat("cli/tests/symlink_to_subdir");
  assert(!modulesInfo.isDirectory());
  assert(modulesInfo.isSymlink());

  const coreInfo = await Deno.lstat("core");
  assert(coreInfo.isDirectory());
  assert(!coreInfo.isSymlink());
});

testPerm({ read: false }, async function lstatPerm(): Promise<void> {
  let caughtError = false;
  try {
    await Deno.lstat("README.md");
  } catch (e) {
    caughtError = true;
    assert(e instanceof Deno.errors.PermissionDenied);
  }
  assert(caughtError);
});

testPerm({ read: true }, async function lstatNotFound(): Promise<void> {
  let caughtError = false;
  let badInfo;

  try {
    badInfo = await Deno.lstat("bad_file_name");
  } catch (err) {
    caughtError = true;
    assert(err instanceof Deno.errors.NotFound);
  }

  assert(caughtError);
  assertEquals(badInfo, undefined);
});

const isWindows = Deno.build.os === "win";

// OS dependent tests
if (isWindows) {
  testPerm(
    { read: true, write: true },
    async function statNoUnixFields(): Promise<void> {
      const enc = new TextEncoder();
      const data = enc.encode("Hello");
      const tempDir = Deno.makeTempDirSync();
      const filename = tempDir + "/test.txt";
      Deno.writeFileSync(filename, data, { perm: 0o666 });
      const s = Deno.statSync(filename);
      assert(s.dev === null);
      assert(s.ino === null);
      assert(s.mode === null);
      assert(s.nlink === null);
      assert(s.uid === null);
      assert(s.gid === null);
      assert(s.rdev === null);
      assert(s.blksize === null);
      assert(s.blocks === null);
    }
  );
} else {
  testPerm(
    { read: true, write: true },
    async function statUnixFields(): Promise<void> {
      const enc = new TextEncoder();
      const data = enc.encode("Hello");
      const tempDir = Deno.makeTempDirSync();
      const filename = tempDir + "/test.txt";
      const filename2 = tempDir + "/test2.txt";
      Deno.writeFileSync(filename, data, { perm: 0o666 });
      // Create a link
      Deno.linkSync(filename, filename2);
      const s = Deno.statSync(filename);
      assert(s.dev !== null);
      assert(s.ino !== null);
      assertEquals(s.mode! & 0o666, 0o666);
      assertEquals(s.nlink, 2);
      assert(s.uid !== null);
      assert(s.gid !== null);
      assert(s.rdev !== null);
      assert(s.blksize !== null);
      assert(s.blocks !== null);
    }
  );
}