import 'package:uuid/uuid.dart';

typedef SerialTableField = TableField<int>;
typedef UUIDTableField = TableField<UuidValue>;
typedef StringTableField = TableField<String>;
typedef BigIntTableField = TableField<BigInt>;
typedef BoolTableField = TableField<bool>;
typedef DateTableField = TableField<DateTime>;
typedef DateTimeTableField = TableField<DateTime>;
typedef FloatTableField = TableField<double>;
typedef IntTableField = TableField<int>;

final possibleFieldTypes = {
  "serial": SerialTableField,
  "uuid": UUIDTableField,
  "str": StringTableField,
  "bigint": BigIntTableField,
  "bool": BoolTableField,
  "date": DateTableField,
  "datetime": DateTimeTableField,
  "float": FloatTableField,
  "int": IntTableField,
};

class TableField<T> {
  final String fieldName;
  final String fieldType;
  final bool isUnique;
  final bool isPrimary;
  final Type type = T;

  TableField({
    required this.fieldName,
    required this.fieldType,
    required this.isUnique,
    required this.isPrimary,
  });

  bool canBePrimary() {
    return fieldType == "serial" || fieldType == "uuid";
  }

  @override
  String toString() {
    return "TableField<$T>(fieldName: $fieldName, fieldType: $fieldType, isUnique: $isUnique, isPrimary: $isPrimary)";
  }

  String toColumnDefinition() {
    return "$fieldName:$fieldType${isPrimary ? ":primary" : ""}${isUnique ? ":unique" : ""}";
  }

  static TableField parseTableField(String definition) {
    final parts = definition.split(":");
    final fieldName = parts[0];
    final fieldType = parts[1];
    final isUnique = parts.contains("unique");
    final isPrimary = parts.contains("primary");

    switch (fieldType) {
      case "serial":
        return SerialTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "uuid":
        return UUIDTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "str":
        return StringTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "bigint":
        return BigIntTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "bool":
        return BoolTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "date":
        return DateTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "datetime":
        return DateTimeTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "float":
        return FloatTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      case "int":
        return IntTableField(
          fieldName: fieldName,
          fieldType: fieldType,
          isUnique: isUnique,
          isPrimary: isPrimary,
        );
      default:
        throw Exception("Unknown field type: $fieldType");
    }
  }
}