import fs = require('fs');
import rimraf = require('rimraf');
import fixturify = require('./')

const test = require('tap').test;

// smoke test the existence of these types via the typescript type checker
let DirJSON: fixturify.DirJSON;
let Options: fixturify.Options;

test('writeSync', function (t: any) {
  rimraf.sync('testdir.tmp');
  fixturify.writeSync('testdir.tmp', {
    'foo.txt': 'foo.txt contents',
    'subdir': {
      'bar.txt': 'bar.txt contents'
    }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp').sort(), ['foo.txt', 'subdir']);
  t.deepEqual(fs.readdirSync('testdir.tmp/subdir').sort(), ['bar.txt']);
  t.equal(fs.readFileSync('testdir.tmp/foo.txt', 'UTF8'), 'foo.txt contents');
  t.equal(fs.readFileSync('testdir.tmp/subdir/bar.txt', 'UTF8'), 'bar.txt contents');

  fixturify.writeSync('testdir.tmp', {
    'something': 'foo.txt contents',
    'else': {
      'bar.txt': 'bar.txt contents'
    }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp').sort(), ['else', 'foo.txt', 'something', 'subdir']);
  t.deepEqual(fs.readdirSync('testdir.tmp/subdir').sort(), ['bar.txt']);
  t.deepEqual(fs.readdirSync('testdir.tmp/else').sort(), ['bar.txt']);

  t.equal(fs.readFileSync('testdir.tmp/foo.txt', 'UTF8'), 'foo.txt contents');
  t.equal(fs.readFileSync('testdir.tmp/subdir/bar.txt', 'UTF8'), 'bar.txt contents');
  t.equal(fs.readFileSync('testdir.tmp/else/bar.txt',  'UTF8'), 'bar.txt contents');

  fixturify.writeSync('testdir.tmp', {
    'else': 'else is now a file'
  });

  t.equal(fs.readFileSync('testdir.tmp/else',  'UTF8'), 'else is now a file');
  fixturify.writeSync('testdir.tmp', {
    'empty-dir': { }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp/empty-dir').sort(), []);
  rimraf.sync('testdir.tmp');
  t.end();
});

test('readSync', function (t: any) {
  rimraf.sync('testdir.tmp');
  fs.mkdirSync('testdir.tmp');
  fs.writeFileSync('testdir.tmp/foo.txt', 'foo.txt contents');
  fs.mkdirSync('testdir.tmp/subdir');
  fs.writeFileSync('testdir.tmp/subdir/bar.txt', 'bar.txt contents');
  fs.symlinkSync('../foo.txt', 'testdir.tmp/subdir/symlink');

  t.deepEqual(fixturify.readSync('testdir.tmp'), {
    'foo.txt': 'foo.txt contents',
    'subdir': {
      'bar.txt': 'bar.txt contents',
      'symlink': 'foo.txt contents'
    }
  });

  rimraf.sync('testdir.tmp');
  t.end();
});

test('readSync include', function (t: any) {
  rimraf.sync('testdir.tmp');
  fs.mkdirSync('testdir.tmp');
  fs.writeFileSync('testdir.tmp/foo.txt', 'foo.txt contents');
  fs.mkdirSync('testdir.tmp/subdir');
  fs.writeFileSync('testdir.tmp/subdir/bar.txt', 'bar.txt contents');
  fs.symlinkSync('../foo.txt', 'testdir.tmp/subdir/symlink');

  t.deepEqual(fixturify.readSync('testdir.tmp', {
    include: ['foo*']
  }), {
    'foo.txt': 'foo.txt contents'
  });

  rimraf.sync('testdir.tmp');
  t.end();
});

test('readSync exclude', function (t: any) {
  rimraf.sync('testdir.tmp');
  fs.mkdirSync('testdir.tmp');
  fs.writeFileSync('testdir.tmp/foo.txt', 'foo.txt contents');
  fs.mkdirSync('testdir.tmp/subdir');
  fs.writeFileSync('testdir.tmp/subdir/bar.txt', 'bar.txt contents');
  fs.symlinkSync('../foo.txt', 'testdir.tmp/subdir/symlink');

  t.deepEqual(fixturify.readSync('testdir.tmp', {
    exclude: ['subdir/bar*']
  }), {
    'foo.txt': 'foo.txt contents',
    'subdir': {
      'symlink': 'foo.txt contents'
    }
  });

  rimraf.sync('testdir.tmp');
  t.end();
});

test('writeSync remove', function (t: any) {
  rimraf.sync('testdir.tmp');
  fs.mkdirSync('testdir.tmp');
  fs.writeFileSync('testdir.tmp/foo.txt', 'foo.txt contents');
  fs.mkdirSync('testdir.tmp/subdir');
  fs.writeFileSync('testdir.tmp/subdir/bar.txt', 'bar.txt contents');
  fs.symlinkSync('../foo.txt', 'testdir.tmp/subdir/symlink');

  fixturify.writeSync('testdir.tmp', {
    'subdir': {
      'symlink': null
    }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp').sort(), ['foo.txt', 'subdir']);
  t.deepEqual(fs.readdirSync('testdir.tmp/subdir').sort(), ['bar.txt']);
  t.equal(fs.readFileSync('testdir.tmp/foo.txt', 'UTF8'), 'foo.txt contents');
  t.equal(fs.readFileSync('testdir.tmp/subdir/bar.txt', 'UTF8'), 'bar.txt contents');

  fixturify.writeSync('testdir.tmp', {
    'subdir': {
      'bar.txt': null
    }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp/').sort(), ['foo.txt', 'subdir']);

  fixturify.writeSync('testdir.tmp', {
    'subdir': {
      'bar.txt': 'hi'
    }
  });

  t.deepEqual(fs.readdirSync('testdir.tmp/').sort(), ['foo.txt', 'subdir']);
  t.equal(fs.readFileSync('testdir.tmp/subdir/bar.txt', 'UTF8'), 'hi');

  fixturify.writeSync('testdir.tmp', {
    'subdir': null
  });
  t.deepEqual(fs.readdirSync('testdir.tmp/').sort(), ['foo.txt']);

  rimraf.sync('testdir.tmp');
  t.end();
});

test('error conditions', function (t: any) {
  test('writeSync arguments requires specific input', function (t: any) {
    // @ts-ignore
    t.throws(() => fixturify.writeSync());
    // @ts-ignore
    t.throws(() => fixturify.writeSync(null));
    // @ts-ignore
    t.throws(() => fixturify.writeSync(null, null));
    // @ts-ignore
    t.throws(() => fixturify.writeSync(null, {}));
    t.end();
  });

  test('writeSync guards against misuse that could cause data loss', function (t: any) {
    // Test that we guard against usage errors that might cause data loss
    // through fs.removeSync('' + '/' + '') or similar.
    rimraf.sync('testdir.tmp')
    t.throws(() => fixturify.writeSync('', { }), /non-empty string/);
    t.throws(() => fixturify.writeSync('testdir.tmp', { '': 'contents' }), /non-empty string/);
    t.throws(() => fixturify.writeSync('testdir.tmp', { '.': { } }), /must not be "\." or "\.\."/);
    t.throws(() => fixturify.writeSync('testdir.tmp', { '..': { } }), /must not be "\." or "\.\."/);
    t.throws(() => fixturify.writeSync('testdir.tmp', { 'foo/bar': { } }), /must not contain "\/" or "\\"/);
    t.throws(() => fixturify.writeSync('testdir.tmp', { 'foo\\bar': { } }), /must not contain "\/" or "\\"/);
    t.end();
  });

  test('writeSync handles overwriting a file and then creating a new file', function(t: any) {
    rimraf.sync('testdir.tmp');
    fs.mkdirSync('testdir.tmp');

    fixturify.writeSync('testdir.tmp', {
      'a.txt': 'a.txt content',
      'b': {}
    });

    t.deepEqual(fs.readdirSync('testdir.tmp').sort(), ['a.txt', 'b']);

    fixturify.writeSync('testdir.tmp', {
      'a.txt': 'a.txt updated',
      'c': {}
    });

    t.deepEqual(fs.readdirSync('testdir.tmp').sort(), ['a.txt', 'b', 'c']);

    rimraf.sync('testdir.tmp');
    t.end();
  });

  test('readSync throws on broken symlinks', function(t: any) {
    rimraf.sync('testdir.tmp');
    fs.mkdirSync('testdir.tmp');
    fs.symlinkSync('doesnotexist', 'testdir.tmp/symlink');
    t.throws(() => fixturify.readSync('testdir.tmp'));
    rimraf.sync('testdir.tmp');
    t.end();
  });

  t.end();
});