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

const isNotWindows = Deno.build.os !== "win";

unitTest(
  { perms: { read: true, write: true } },
  function chmodSyncSuccess(): 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 });

    // On windows no effect, but should not crash
    Deno.chmodSync(filename, 0o777);

    // Check success when not on windows
    if (isNotWindows) {
      const fileInfo = Deno.statSync(filename);
      assert(fileInfo.mode);
      assertEquals(fileInfo.mode & 0o777, 0o777);
    }
  }
);

// Check symlink when not on windows
unitTest(
  {
    skip: Deno.build.os === "win",
    perms: { read: true, write: true }
  },
  function chmodSyncSymlinkSuccess(): 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 symlinkName = tempDir + "/test_symlink.txt";
    Deno.symlinkSync(filename, symlinkName);

    let symlinkInfo = Deno.lstatSync(symlinkName);
    assert(symlinkInfo.mode);
    const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent

    Deno.chmodSync(symlinkName, 0o777);

    // Change actual file mode, not symlink
    const fileInfo = Deno.statSync(filename);
    assert(fileInfo.mode);
    assertEquals(fileInfo.mode & 0o777, 0o777);
    symlinkInfo = Deno.lstatSync(symlinkName);
    assert(symlinkInfo.mode);
    assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
  }
);

unitTest({ perms: { write: true } }, function chmodSyncFailure(): void {
  let err;
  try {
    const filename = "/badfile.txt";
    Deno.chmodSync(filename, 0o777);
  } catch (e) {
    err = e;
  }
  assert(err instanceof Deno.errors.NotFound);
});

unitTest({ perms: { write: false } }, function chmodSyncPerm(): void {
  let err;
  try {
    Deno.chmodSync("/somefile.txt", 0o777);
  } catch (e) {
    err = e;
  }
  assert(err instanceof Deno.errors.PermissionDenied);
  assertEquals(err.name, "PermissionDenied");
});

unitTest(
  { perms: { read: true, write: true } },
  async function chmodSuccess(): 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 });

    // On windows no effect, but should not crash
    await Deno.chmod(filename, 0o777);

    // Check success when not on windows
    if (isNotWindows) {
      const fileInfo = Deno.statSync(filename);
      assert(fileInfo.mode);
      assertEquals(fileInfo.mode & 0o777, 0o777);
    }
  }
);

// Check symlink when not on windows

unitTest(
  {
    skip: Deno.build.os === "win",
    perms: { read: true, write: true }
  },
  async function chmodSymlinkSuccess(): 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 symlinkName = tempDir + "/test_symlink.txt";
    Deno.symlinkSync(filename, symlinkName);

    let symlinkInfo = Deno.lstatSync(symlinkName);
    assert(symlinkInfo.mode);
    const symlinkMode = symlinkInfo.mode & 0o777; // platform dependent

    await Deno.chmod(symlinkName, 0o777);

    // Just change actual file mode, not symlink
    const fileInfo = Deno.statSync(filename);
    assert(fileInfo.mode);
    assertEquals(fileInfo.mode & 0o777, 0o777);
    symlinkInfo = Deno.lstatSync(symlinkName);
    assert(symlinkInfo.mode);
    assertEquals(symlinkInfo.mode & 0o777, symlinkMode);
  }
);

unitTest({ perms: { write: true } }, async function chmodFailure(): Promise<
  void
> {
  let err;
  try {
    const filename = "/badfile.txt";
    await Deno.chmod(filename, 0o777);
  } catch (e) {
    err = e;
  }
  assert(err instanceof Deno.errors.NotFound);
});

unitTest({ perms: { write: false } }, async function chmodPerm(): Promise<
  void
> {
  let err;
  try {
    await Deno.chmod("/somefile.txt", 0o777);
  } catch (e) {
    err = e;
  }
  assert(err instanceof Deno.errors.PermissionDenied);
  assertEquals(err.name, "PermissionDenied");
});