import 'dart:io';

import 'package:path/path.dart' as p;
import 'package:pipe/pipe.dart';
import 'package:test/test.dart';

void main() {
  late String root;

  setUp(() {
    root = Directory.systemTemp
        .createTempSync('pipe-package-target')
        .resolveSymbolicLinksSync();
    File(p.join(root, 'pubspec.yaml')).writeAsStringSync('name: outer\n');
    Directory(p.join(root, 'lib', 'data')).createSync(recursive: true);
    File(p.join(root, 'lib', 'data', 'a.dart')).writeAsStringSync('');
    File(p.join(root, 'nested', 'pubspec.yaml'))
      ..createSync(recursive: true)
      ..writeAsStringSync('name: nested\n');
    Directory(p.join(root, 'nested', 'lib')).createSync();
  });

  tearDown(() => Directory(root).deleteSync(recursive: true));

  group('enclosingPackage', () {
    test('a package root is its own package, with no scope', () {
      final target = enclosingPackage(root);
      expect(target.root, root);
      expect(target.scope, isNull);
    });

    test('a directory inside a package resolves to the package root', () {
      final target = enclosingPackage(p.join(root, 'lib', 'data'));
      expect(target.root, root);
      expect(target.scope, p.join('lib', 'data'));
    });

    test('the nearest pubspec wins', () {
      final target = enclosingPackage(p.join(root, 'nested', 'lib'));
      expect(target.root, p.join(root, 'nested'));
      expect(target.scope, 'lib');
    });

    test('a missing path is returned unchanged for loadProject to reject', () {
      final missing = p.join(root, 'nope');
      expect(enclosingPackage(missing).root, missing);
      expect(enclosingPackage(missing).scope, isNull);
    });
  });

  test('loadProject on a directory inside a package names the package', () {
    // `pipe check lib` used to say "run `dart pub get` in .../lib".
    expect(
      () => loadProject(p.join(root, 'lib')),
      throwsA(
        isA<PipeException>().having(
          (e) => e.remedy,
          'remedy',
          allOf(contains('inside the package at $root'), contains('--dir lib')),
        ),
      ),
    );
  });
}