wip

packages/racing/application/use-cases/JoinLeagueUseCase.ts

@@ -0,0 +1,43 @@
+import type {
+  ILeagueMembershipRepository,
+} from '@gridpilot/racing/domain/repositories/ILeagueMembershipRepository';
+import type {
+  LeagueMembership,
+  MembershipRole,
+  MembershipStatus,
+} from '@gridpilot/racing/domain/entities/LeagueMembership';
+
+export interface JoinLeagueCommand {
+  leagueId: string;
+  driverId: string;
+}
+
+export class JoinLeagueUseCase {
+  constructor(private readonly membershipRepository: ILeagueMembershipRepository) {}
+
+  /**
+   * Joins a driver to a league as an active member.
+   *
+   * Mirrors the behavior of the legacy joinLeague function:
+   * - Throws when membership already exists for this league/driver.
+   * - Creates a new active membership with role "member" and current timestamp.
+   */
+  async execute(command: JoinLeagueCommand): Promise<LeagueMembership> {
+    const { leagueId, driverId } = command;
+
+    const existing = await this.membershipRepository.getMembership(leagueId, driverId);
+    if (existing) {
+      throw new Error('Already a member or have a pending request');
+    }
+
+    const membership: LeagueMembership = {
+      leagueId,
+      driverId,
+      role: 'member' as MembershipRole,
+      status: 'active' as MembershipStatus,
+      joinedAt: new Date(),
+    };
+
+    return this.membershipRepository.saveMembership(membership);
+  }
+}