import type { ValueObject } from '@core/shared/domain/ValueObject';
import { RacingDomainValidationError } from '../errors/RacingDomainError';

export interface TeamRatingDeltaProps {
  value: number;
}

export class TeamRatingDelta implements ValueObject<TeamRatingDeltaProps> {
  readonly value: number;

  private constructor(value: number) {
    this.value = value;
  }

  static create(value: number): TeamRatingDelta {
    if (typeof value !== 'number' || isNaN(value)) {
      throw new RacingDomainValidationError('Team rating delta must be a valid number');
    }

    // Delta can be negative or positive, but within reasonable bounds
    if (value < -100 || value > 100) {
      throw new RacingDomainValidationError(
        `Team rating delta must be between -100 and 100, got: ${value}`
      );
    }

    return new TeamRatingDelta(value);
  }

  get props(): TeamRatingDeltaProps {
    return { value: this.value };
  }

  equals(other: ValueObject<TeamRatingDeltaProps>): boolean {
    return this.value === other.props.value;
  }

  toNumber(): number {
    return this.value;
  }

  toString(): string {
    return this.value.toString();
  }

  isPositive(): boolean {
    return this.value > 0;
  }

  isNegative(): boolean {
    return this.value < 0;
  }

  isZero(): boolean {
    return this.value === 0;
  }
}