59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
import { RacingDomainValidationError } from '../errors/RacingDomainError';
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import type { IValueObject } from '@gridpilot/shared/domain';
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export type SeasonDropStrategy = 'none' | 'bestNResults' | 'dropWorstN';
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export interface SeasonDropPolicyProps {
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strategy: SeasonDropStrategy;
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/**
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* Number of results to consider for strategies that require a count.
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* - bestNResults: keep best N
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* - dropWorstN: drop worst N
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*/
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n?: number;
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}
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export class SeasonDropPolicy implements IValueObject<SeasonDropPolicyProps> {
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readonly strategy: SeasonDropStrategy;
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readonly n?: number;
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constructor(props: SeasonDropPolicyProps) {
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if (!props.strategy) {
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throw new RacingDomainValidationError(
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'SeasonDropPolicy.strategy is required',
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);
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}
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if (props.strategy === 'bestNResults' || props.strategy === 'dropWorstN') {
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if (props.n === undefined || !Number.isInteger(props.n) || props.n <= 0) {
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throw new RacingDomainValidationError(
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'SeasonDropPolicy.n must be a positive integer when using bestNResults or dropWorstN',
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);
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}
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}
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if (props.strategy === 'none' && props.n !== undefined) {
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throw new RacingDomainValidationError(
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'SeasonDropPolicy.n must be undefined when strategy is none',
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);
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}
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this.strategy = props.strategy;
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if (props.n !== undefined) {
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this.n = props.n;
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}
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}
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get props(): SeasonDropPolicyProps {
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return {
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strategy: this.strategy,
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...(this.n !== undefined ? { n: this.n } : {}),
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};
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}
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equals(other: IValueObject<SeasonDropPolicyProps>): boolean {
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const a = this.props;
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const b = other.props;
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return a.strategy === b.strategy && a.n === b.n;
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}
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} |