fix data flow issues

apps/website/lib/services/sponsors/SponsorService.ts

@@ -58,4 +58,51 @@ export class SponsorService {
   async getSponsorshipPricing(): Promise<GetEntitySponsorshipPricingResultDto> {
     return await this.apiClient.getPricing();
   }
+
+  /**
+   * Get sponsor billing information
+   */
+  async getBilling(sponsorId: string): Promise<{
+    paymentMethods: any[];
+    invoices: any[];
+    stats: any;
+  }> {
+    return await this.apiClient.getBilling(sponsorId);
+  }
+
+  /**
+   * Get available leagues for sponsorship
+   */
+  async getAvailableLeagues(): Promise<any[]> {
+    return await this.apiClient.getAvailableLeagues();
+  }
+
+  /**
+   * Get detailed league information
+   */
+  async getLeagueDetail(leagueId: string): Promise<{
+    league: any;
+    drivers: any[];
+    races: any[];
+  }> {
+    return await this.apiClient.getLeagueDetail(leagueId);
+  }
+
+  /**
+   * Get sponsor settings
+   */
+  async getSettings(sponsorId: string): Promise<{
+    profile: any;
+    notifications: any;
+    privacy: any;
+  }> {
+    return await this.apiClient.getSettings(sponsorId);
+  }
+
+  /**
+   * Update sponsor settings
+   */
+  async updateSettings(sponsorId: string, input: any): Promise<void> {
+    return await this.apiClient.updateSettings(sponsorId, input);
+  }
 }