import { prisma } from '../../../lib/prisma';

export class BillingService {
  async processRefund(_transactionId: string): Promise<void> {
    // Refund logic here
    throw new Error('Method not implemented.');
  }

  async getPricingTiers(): Promise<any[]> {
    return await prisma.plan.findMany({
      where: { isActive: true }
    });
  }

  async applyCoupon(couponCode: string): Promise<any> {
    return { couponCode, applied: false };
  }

  async renewSubscription(subscriptionId: string) {
    return await prisma.subscription.update({
      where: { id: subscriptionId },
      data: { startDate: new Date() } // Simplified renewal
    });
  }

  async overrideBilling(userId: string, amount: number): Promise<boolean> {
    // Manual adjustment logic
    return true;
  }

  async checkFeatureGating(userId: string, featureKey: string): Promise<boolean> {
    const subscription = await prisma.subscription.findFirst({
      where: { userId },
      include: { plan: true }
    });
    if (!subscription) return false;
    
    const permissions = subscription.plan.permissions as any;
    return !!permissions?.[featureKey];
  }

  async createSubscription(userId: string, subscriptionData: any) {
    return await prisma.subscription.create({
      data: {
        ...subscriptionData,
        userId
      }
    });
  }

  async getSubscription(userId: string) {
    return await prisma.subscription.findFirst({
      where: { userId },
      include: { plan: true }
    });
  }

  async updateSubscription(subscriptionId: string, updateData: any) {
    return await prisma.subscription.update({
      where: { id: subscriptionId },
      data: updateData
    });
  }

  async cancelSubscription(subscriptionId: string): Promise<void> {
    await prisma.subscription.update({
      where: { id: subscriptionId },
      data: { cancelledAt: new Date() }
    });
  }
}

export default BillingService;
