Subscription Contract Engine

// NestJS Controller: Manual Provisioning with Idempotency Key
@Post('properties/:id/contracts')
@Roles('superadmin', 'admin')
@UseGuards(JwtAuthGuard, RolesGuard)
async provisionContract(
  @Param('id') propertyId: string,
  @Headers('Idempotency-Key') idempotencyKey: string,
  @Body() dto: ProvisionContractDto,
) {
  // 1. Cek idempotency key di Redis
  const cachedResponse = await this.redis.get(`idemp:${idempotencyKey}`);
  if (cachedResponse) {
    return JSON.parse(cachedResponse);
  }

  // 2. Eksekusi mutasi kontrak ke dokumen Property MongoDB
  const result = await this.subscriptionService.provisionContract(propertyId, dto);

  // 3. Simpan hasil di Redis untuk idempotency caching (24 jam)
  await this.redis.set(`idemp:${idempotencyKey}`, JSON.stringify(result), 'EX', 86400);

  return result;
}