/**
 * Subscription Service - Mirror backend subscription endpoints
 */
import { apiClient } from '../client';
import { 
  SubscriptionLimits, 
  FeatureCheckRequest, 
  FeatureCheckResponse, 
  UsageCheckRequest, 
  UsageCheckResponse 
} from '../types/subscription';

export class SubscriptionService {
  private readonly baseUrl = '/subscriptions';

  async getSubscriptionLimits(tenantId: string): Promise<SubscriptionLimits> {
    return apiClient.get<SubscriptionLimits>(`${this.baseUrl}/${tenantId}/limits`);
  }

  async checkFeatureAccess(
    tenantId: string, 
    featureName: string
  ): Promise<FeatureCheckResponse> {
    return apiClient.get<FeatureCheckResponse>(
      `${this.baseUrl}/${tenantId}/features/${featureName}/check`
    );
  }

  async checkUsageLimit(
    tenantId: string, 
    resourceType: 'users' | 'sales_records' | 'inventory_items' | 'api_requests',
    requestedAmount?: number
  ): Promise<UsageCheckResponse> {
    const queryParams = new URLSearchParams();
    if (requestedAmount !== undefined) {
      queryParams.append('requested_amount', requestedAmount.toString());
    }

    const url = queryParams.toString()
      ? `${this.baseUrl}/${tenantId}/usage/${resourceType}/check?${queryParams.toString()}`
      : `${this.baseUrl}/${tenantId}/usage/${resourceType}/check`;

    return apiClient.get<UsageCheckResponse>(url);
  }

  async recordUsage(
    tenantId: string,
    resourceType: 'users' | 'sales_records' | 'inventory_items' | 'api_requests',
    amount: number = 1
  ): Promise<{ success: boolean; message: string }> {
    return apiClient.post<{ success: boolean; message: string }>(
      `${this.baseUrl}/${tenantId}/usage/${resourceType}/record`,
      { amount }
    );
  }

  async getCurrentUsage(tenantId: string): Promise<{
    users: number;
    sales_records: number;
    inventory_items: number;
    api_requests_this_hour: number;
  }> {
    return apiClient.get(`${this.baseUrl}/${tenantId}/usage/current`);
  }
}

export const subscriptionService = new SubscriptionService();