import 'dart:io';

import 'package:brick_generator/shell.dart';
import 'package:path/path.dart' as path;

// Constants
final _apps = 'apps';
final _bricks = 'bricks';
final _staticDir = path.join('tools', 'brick_generator', 'assets');

Future<void> main(List<String> arguments) async {
  final _appName = arguments[0];

  final _projectSnakeName = arguments[1];
  final _projectParamName = arguments[2];
  final _projectTitleName = arguments[3];
  final _orgName = arguments[4];

  final _sourcePath = path.join(_apps, _appName);
  final _targetPath = path.join(_bricks, _appName, '__brick__');

  final _androidPath = path.join(_targetPath, 'android');
  final _androidKotlinPath =
      path.join(_androidPath, 'app', 'src', 'main', 'kotlin');
  final _orgPath = path.join(_androidKotlinPath, 'com');

  // Remove Previously Generated Files
  final targetDir = Directory(_targetPath);
  if (targetDir.existsSync()) {
    await targetDir.delete(recursive: true);
  }

  // Copy Project Files
  await Shell.cp(_sourcePath, _targetPath);

  // Delete Android's Organization Folder Hierarchy
  Directory(_orgPath).deleteSync(recursive: true);

  // Convert Values to Variables
  await Future.wait(
    Directory(_targetPath)
        .listSync(recursive: true)
        .whereType<File>()
        .map((_) async {
      var file = _;

      try {

        if (path.extension(file.path) == '.dart') {
          final contents = await file.readAsString();
          file = await file.writeAsString(contents);
        }

        final contents = await file.readAsString();
        file = await file.writeAsString(
          contents
              .replaceAll(
                _projectSnakeName,
                '{{#snakeCase}}{{project_name}}{{/snakeCase}}',
              )
              .replaceAll(
                _projectParamName,
                '{{#paramCase}}{{project_name}}{{/paramCase}}',
              )
              .replaceAll('A new Flutter project.', '{{{description}}}')
              .replaceAll(
                _projectTitleName,
                '{{#titleCase}}{{project_name}}{{/titleCase}}',
              )
              .replaceAll(
                _orgName,
                path.isWithin(_androidPath, file.path)
                    ? '{{#dotCase}}{{org_name}}{{/dotCase}}.{{#snakeCase}}{{project_name}}{{/snakeCase}}'
                    : '{{#dotCase}}{{org_name}}{{/dotCase}}.{{#paramCase}}{{project_name}}{{/paramCase}}',
              ),
        );
        final fileSegments = file.path.split('/').sublist(2);
        if (fileSegments.contains(_projectSnakeName)) {
          final newPathSegment = fileSegments.join('/').replaceAll(
                _projectSnakeName,
                '{{#snakeCase}}{{project_name}}{{/snakeCase}}',
              );
          final newPath = path.join(_targetPath, newPathSegment);
          File(newPath).createSync(recursive: true);
          file.renameSync(newPath);
          Directory(file.parent.path).deleteSync(recursive: true);
        }
      } catch (_) {}
    }),
  );

  final mainActivityKt = File(
    path.join(
      _androidKotlinPath,
      '{{#pathCase}}{{org_name}}{{/pathCase}}',
      'MainActivity.kt',
    ),
  );

  await Shell.mkdir(mainActivityKt.parent.path);
  await Shell.cp(path.join(_staticDir, 'MainActivity.kt'), mainActivityKt.path);
}