94 lines
3.1 KiB
TypeScript
94 lines
3.1 KiB
TypeScript
import { IRatingEventRepository } from '../../domain/repositories/IRatingEventRepository';
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import { IUserRatingRepository } from '../../domain/repositories/IUserRatingRepository';
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import { RatingSnapshotCalculator } from '../../domain/services/RatingSnapshotCalculator';
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import { UserRatingDto } from '../dtos/UserRatingDto';
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/**
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* Input for RecomputeUserRatingSnapshotUseCase
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*/
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export interface RecomputeUserRatingSnapshotInput {
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userId: string;
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}
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/**
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* Output for RecomputeUserRatingSnapshotUseCase
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*/
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export interface RecomputeUserRatingSnapshotOutput {
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snapshot: UserRatingDto;
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}
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/**
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* Use Case: RecomputeUserRatingSnapshotUseCase
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*
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* Recomputes a user's rating snapshot from all events in the ledger.
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* Useful for:
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* - Algorithm updates
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* - Data corrections
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* - Manual recomputation
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*/
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export class RecomputeUserRatingSnapshotUseCase {
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constructor(
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private readonly ratingEventRepository: IRatingEventRepository,
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private readonly userRatingRepository: IUserRatingRepository,
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) {}
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async execute(input: RecomputeUserRatingSnapshotInput): Promise<RecomputeUserRatingSnapshotOutput> {
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// 1. Load all events for the user
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const events = await this.ratingEventRepository.getAllByUserId(input.userId);
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// 2. Compute snapshot from events
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const snapshot = RatingSnapshotCalculator.calculate(input.userId, events);
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// 3. Save snapshot
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await this.userRatingRepository.save(snapshot);
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// 4. Convert to DTO for output
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const dto: UserRatingDto = {
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userId: snapshot.userId,
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driver: {
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value: snapshot.driver.value,
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confidence: snapshot.driver.confidence,
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sampleSize: snapshot.driver.sampleSize,
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trend: snapshot.driver.trend,
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lastUpdated: snapshot.driver.lastUpdated.toISOString(),
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},
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admin: {
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value: snapshot.admin.value,
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confidence: snapshot.admin.confidence,
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sampleSize: snapshot.admin.sampleSize,
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trend: snapshot.admin.trend,
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lastUpdated: snapshot.admin.lastUpdated.toISOString(),
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},
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steward: {
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value: snapshot.steward.value,
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confidence: snapshot.steward.confidence,
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sampleSize: snapshot.steward.sampleSize,
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trend: snapshot.steward.trend,
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lastUpdated: snapshot.steward.lastUpdated.toISOString(),
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},
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trust: {
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value: snapshot.trust.value,
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confidence: snapshot.trust.confidence,
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sampleSize: snapshot.trust.sampleSize,
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trend: snapshot.trust.trend,
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lastUpdated: snapshot.trust.lastUpdated.toISOString(),
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},
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fairness: {
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value: snapshot.fairness.value,
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confidence: snapshot.fairness.confidence,
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sampleSize: snapshot.fairness.sampleSize,
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trend: snapshot.fairness.trend,
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lastUpdated: snapshot.fairness.lastUpdated.toISOString(),
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},
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overallReputation: snapshot.overallReputation,
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createdAt: snapshot.createdAt.toISOString(),
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updatedAt: snapshot.updatedAt.toISOString(),
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};
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if (snapshot.calculatorVersion !== undefined) {
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dto.calculatorVersion = snapshot.calculatorVersion;
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}
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return { snapshot: dto };
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}
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} |