import 'package:tuuli_api/tuuli_api.dart';

extension ColumnsParser on TableDefinition {
  List<DBColumnDefinition> get parsedColumns {
    return columns
        .split(",")
        .map((e) {
          final parts = e.split(":");
          final name = parts[0];
          switch (parts[1]) {
            case "serial":
              return PrimarySerialColumnDefinition(name);
            case "str":
              return TextColumnDefinition(
                name,
                parts.contains("unique"),
                parts.contains("default"),
              );
            case "bool":
              return BooleanColumnDefinition(
                name,
                parts.contains("unique"),
                parts.contains("default"),
              );
            case "datetime":
              return TimestampColumnDefinition(
                name,
                parts.contains("unique"),
                parts.contains("default"),
              );
            case "float":
              return DoubleColumnDefinition(
                name,
                parts.contains("unique"),
                parts.contains("default"),
              );
            case "int":
              return IntegerColumnDefinition(
                name,
                parts.contains("unique"),
                parts.contains("default"),
              );
            case "int-user":
              return UserRefColumnDefinition(name);
            case "int-asset":
              return AssetRefColumnDefinition(name);
          }

          return null;
        })
        .whereType<DBColumnDefinition>()
        .toList(growable: false);
  }
}

abstract class DBColumnDefinition {
  final String name;
  final bool unique;
  final bool hasDefault;

  DBColumnDefinition({
    required this.name,
    required this.unique,
    required this.hasDefault,
  });
}

class PrimarySerialColumnDefinition extends DBColumnDefinition {
  PrimarySerialColumnDefinition(String name)
      : super(name: name, unique: false, hasDefault: false);
}

class TextColumnDefinition extends DBColumnDefinition {
  TextColumnDefinition(String name, bool unique, bool hasDefault)
      : super(name: name, unique: unique, hasDefault: hasDefault);
}

class BooleanColumnDefinition extends DBColumnDefinition {
  BooleanColumnDefinition(String name, bool unique, bool hasDefault)
      : super(name: name, unique: unique, hasDefault: hasDefault);
}

class TimestampColumnDefinition extends DBColumnDefinition {
  TimestampColumnDefinition(String name, bool unique, bool hasDefault)
      : super(name: name, unique: unique, hasDefault: hasDefault);
}

class DoubleColumnDefinition extends DBColumnDefinition {
  DoubleColumnDefinition(String name, bool unique, bool hasDefault)
      : super(name: name, unique: unique, hasDefault: hasDefault);
}

class IntegerColumnDefinition extends DBColumnDefinition {
  IntegerColumnDefinition(String name, bool unique, bool hasDefault)
      : super(name: name, unique: unique, hasDefault: hasDefault);
}

class UserRefColumnDefinition extends DBColumnDefinition {
  UserRefColumnDefinition(String name)
      : super(name: name, unique: false, hasDefault: false);
}

class AssetRefColumnDefinition extends DBColumnDefinition {
  AssetRefColumnDefinition(String name)
      : super(name: name, unique: false, hasDefault: false);
}