/*
 * Jake JavaScript build tool
 * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

const PROJECT_DIR = process.env.PROJECT_DIR;

let assert = require('assert');
let fs = require('fs');
let path = require('path');
let file = require(`${PROJECT_DIR}/lib/utils/file`);
let existsSync = fs.existsSync || path.existsSync;

let walk = function (dir) {
  let ret = [dir];

  fs.readdirSync(dir).forEach(function (entry) {
    let current = path.join(dir, entry);
    let stat = fs.statSync(current);
    if (stat.isDirectory()) {
      ret = ret.concat(walk(current));
    }
    else {
      ret.push(current);
    }
  });

  return ret;
};

let symlinkDir = function (target, linkPath) {
  let resolvedTarget = process.platform == 'win32'
    ? path.resolve(target)
    : target;
  let type = process.platform == 'win32' ? 'junction' : 'dir';

  fs.symlinkSync(resolvedTarget, linkPath, type);
};

suite('fileUtils', function () {

  test('mkdirP', function () {
    let expected = [
      ['foo'],
      ['foo', 'bar'],
      ['foo', 'bar', 'baz'],
      ['foo', 'bar', 'baz', 'qux']
    ];
    file.mkdirP('foo/bar/baz/qux');
    let res = walk('foo');
    for (let i = 0, ii = res.length; i < ii; i++) {
      assert.equal(path.join.apply(path, expected[i]), res[i]);
    }
    file.rmRf('foo');
  });

  test('rmRf', function () {
    file.mkdirP('foo/bar/baz/qux');
    file.rmRf('foo/bar');
    let res = walk('foo');
    assert.equal(1, res.length);
    assert.equal('foo', res[0]);
    fs.rmdirSync('foo');
  });

  test('rmRf with symlink subdir', function () {
    file.mkdirP('foo');
    file.mkdirP('bar');
    fs.writeFileSync('foo/hello.txt', 'hello, it\'s me');
    symlinkDir('foo', 'bar/foo'); file.rmRf('bar');

    // Make sure the bar directory was successfully deleted
    let barDeleted = false;
    try {
      fs.statSync('bar');
    } catch(err) {
      if(err.code == 'ENOENT') {
        barDeleted = true;
      }
    }
    assert.equal(true, barDeleted);

    // Make sure that the file inside the linked folder wasn't deleted
    let res = fs.readdirSync('foo');
    assert.equal(1, res.length);
    assert.equal('hello.txt', res[0]);

    // Cleanup
    fs.unlinkSync('foo/hello.txt');
    fs.rmdirSync('foo');
  });

  test('rmRf with symlinked dir', function () {
    file.mkdirP('foo');
    fs.writeFileSync('foo/hello.txt', 'hello!');
    symlinkDir('foo', 'bar');
    file.rmRf('bar');

    // Make sure the bar directory was successfully deleted
    let barDeleted = false;
    try {
      fs.statSync('bar');
    } catch(err) {
      if(err.code == 'ENOENT') {
        barDeleted = true;
      }
    }
    assert.equal(true, barDeleted);

    // Make sure that the file inside the linked folder wasn't deleted
    let res = fs.readdirSync('foo');
    assert.equal(1, res.length);
    assert.equal('hello.txt', res[0]);

    // Cleanup
    fs.unlinkSync('foo/hello.txt');
    fs.rmdirSync('foo');
  });

  test('cpR with same name and different directory', function () {
    file.mkdirP('foo');
    fs.writeFileSync('foo/bar.txt', 'w00t');
    file.cpR('foo', 'bar');
    assert.ok(existsSync('bar/bar.txt'));
    file.rmRf('foo');
    file.rmRf('bar');
  });

  test('cpR with same to and from will throw', function () {
    assert.throws(function () {
      file.cpR('foo.txt', 'foo.txt');
    });
  });

  test('cpR rename via copy in directory', function () {
    file.mkdirP('foo');
    fs.writeFileSync('foo/bar.txt', 'w00t');
    file.cpR('foo/bar.txt', 'foo/baz.txt');
    assert.ok(existsSync('foo/baz.txt'));
    file.rmRf('foo');
  });

  test('cpR rename via copy in base', function () {
    fs.writeFileSync('bar.txt', 'w00t');
    file.cpR('bar.txt', 'baz.txt');
    assert.ok(existsSync('baz.txt'));
    file.rmRf('bar.txt');
    file.rmRf('baz.txt');
  });

  test('cpR keeps file mode', function () {
    fs.writeFileSync('bar.txt', 'w00t', {mode: 0o750});
    fs.writeFileSync('bar1.txt', 'w00t!', {mode: 0o744});
    file.cpR('bar.txt', 'baz.txt');
    file.cpR('bar1.txt', 'baz1.txt');

    assert.ok(existsSync('baz.txt'));
    assert.ok(existsSync('baz1.txt'));
    let bazStat = fs.statSync('baz.txt');
    let bazStat1 = fs.statSync('baz1.txt');
    assert.equal(0o750, bazStat.mode & 0o7777);
    assert.equal(0o744, bazStat1.mode & 0o7777);

    file.rmRf('bar.txt');
    file.rmRf('baz.txt');
    file.rmRf('bar1.txt');
    file.rmRf('baz1.txt');
  });

  test('cpR keeps file mode when overwriting with preserveMode', function () {
    fs.writeFileSync('bar.txt', 'w00t', {mode: 0o755});
    fs.writeFileSync('baz.txt', 'w00t!', {mode: 0o744});
    file.cpR('bar.txt', 'baz.txt', {silent: true, preserveMode: true});

    assert.ok(existsSync('baz.txt'));
    let bazStat = fs.statSync('baz.txt');
    assert.equal(0o755, bazStat.mode & 0o777);

    file.rmRf('bar.txt');
    file.rmRf('baz.txt');
  });

  test('cpR does not keep file mode when overwriting', function () {
    fs.writeFileSync('bar.txt', 'w00t', {mode: 0o766});
    fs.writeFileSync('baz.txt', 'w00t!', {mode: 0o744});
    file.cpR('bar.txt', 'baz.txt');

    assert.ok(existsSync('baz.txt'));
    let bazStat = fs.statSync('baz.txt');
    assert.equal(0o744, bazStat.mode & 0o777);

    file.rmRf('bar.txt');
    file.rmRf('baz.txt');
  });

  test('cpR copies file mode recursively', function () {
    fs.mkdirSync('foo');
    fs.writeFileSync('foo/bar.txt', 'w00t', {mode: 0o740});
    file.cpR('foo', 'baz');

    assert.ok(existsSync('baz'));
    let barStat = fs.statSync('baz/bar.txt');
    assert.equal(0o740, barStat.mode & 0o777);

    file.rmRf('foo');
    file.rmRf('baz');
  });

  test('cpR keeps file mode recursively', function () {
    fs.mkdirSync('foo');
    fs.writeFileSync('foo/bar.txt', 'w00t', {mode: 0o740});
    fs.mkdirSync('baz');
    fs.mkdirSync('baz/foo');
    fs.writeFileSync('baz/foo/bar.txt', 'w00t!', {mode: 0o755});
    file.cpR('foo', 'baz', {silent: true, preserveMode: true});

    assert.ok(existsSync('baz'));
    let barStat = fs.statSync('baz/foo/bar.txt');
    assert.equal(0o740, barStat.mode & 0o777);

    file.rmRf('foo');
    file.rmRf('baz');
  });

  test('cpR copies directory mode recursively', function () {
    fs.mkdirSync('foo', 0o755);
    fs.mkdirSync('foo/bar', 0o700);
    file.cpR('foo', 'bar');

    assert.ok(existsSync('foo'));
    let fooBarStat = fs.statSync('bar/bar');
    assert.equal(0o700, fooBarStat.mode & 0o777);

    file.rmRf('foo');
    file.rmRf('bar');
  });

});

