wip league admin tools

core/racing/application/use-cases/RemoveLeagueMemberUseCase.ts

@@ -15,7 +15,10 @@ export interface RemoveLeagueMemberResult {
   removedRole: string;
 }
 
-export type RemoveLeagueMemberErrorCode = 'MEMBERSHIP_NOT_FOUND' | 'REPOSITORY_ERROR';
+export type RemoveLeagueMemberErrorCode =
+  | 'MEMBERSHIP_NOT_FOUND'
+  | 'CANNOT_REMOVE_LAST_OWNER'
+  | 'REPOSITORY_ERROR';
 
 export class RemoveLeagueMemberUseCase {
   constructor(
@@ -39,6 +42,18 @@ export class RemoveLeagueMemberUseCase {
         });
       }
 
+      if (membership.role.toString() === 'owner') {
+        const members = await this.leagueMembershipRepository.getLeagueMembers(params.leagueId);
+        const ownerCount = members.filter(m => m.role.toString() === 'owner').length;
+
+        if (ownerCount <= 1) {
+          return Result.err({
+            code: 'CANNOT_REMOVE_LAST_OWNER',
+            details: { message: 'Cannot remove the last owner' },
+          });
+        }
+      }
+
       const updatedMembership = LeagueMembership.create({
         id: membership.id,
         leagueId: membership.leagueId.toString(),