iistwin/server/billing/payments.service.ts

import { and, desc, eq, sql } from "drizzle-orm";
import { db } from "../db";
import { billingPayments, billingTransactions, organizationBilling, organizations } from "@shared/schema";
import type { BillingPayment } from "@shared/schema";

// Сервис платежей биллинга: создание, выборки и зачисление успешных платежей.

export interface CreateBillingPaymentParams {
  organizationId: number;
  provider: string;
  externalId: string;
  amount: number;
  currency: string;
  idempotencyKey: string;
  metadata?: Record<string, unknown>;
}

// Создание платежа с защитой от дублей: повторный вызов с тем же
// idempotency_key возвращает существующую запись, а не создаёт новую.
export async function createBillingPayment(params: CreateBillingPaymentParams): Promise<BillingPayment> {
  const [row] = await db
    .insert(billingPayments)
    .values({
      organizationId: params.organizationId,
      provider: params.provider,
      externalId: params.externalId,
      amount: params.amount.toFixed(2),
      currency: params.currency,
      status: 'pending',
      idempotencyKey: params.idempotencyKey,
      metadata: params.metadata ?? null,
    })
    .onConflictDoNothing({ target: billingPayments.idempotencyKey })
    .returning();
  if (row) return row;
  const [existing] = await db
    .select()
    .from(billingPayments)
    .where(eq(billingPayments.idempotencyKey, params.idempotencyKey))
    .limit(1);
  return existing;
}

export async function listBillingPayments(organizationId: number, limit = 50): Promise<BillingPayment[]> {
  return db
    .select()
    .from(billingPayments)
    .where(eq(billingPayments.organizationId, organizationId))
    .orderBy(desc(billingPayments.createdAt))
    .limit(limit);
}

export async function getBillingPaymentById(id: number, organizationId?: number): Promise<BillingPayment | null> {
  const conditions = organizationId !== undefined
    ? and(eq(billingPayments.id, id), eq(billingPayments.organizationId, organizationId))
    : eq(billingPayments.id, id);
  const [row] = await db.select().from(billingPayments).where(conditions).limit(1);
  return row ?? null;
}

export async function getBillingPaymentByExternalId(externalId: string): Promise<BillingPayment | null> {
  const [row] = await db
    .select()
    .from(billingPayments)
    .where(eq(billingPayments.externalId, externalId))
    .limit(1);
  return row ?? null;
}

export async function markBillingPaymentCanceled(id: number): Promise<BillingPayment | null> {
  const [row] = await db
    .update(billingPayments)
    .set({ status: 'canceled', updatedAt: new Date() })
    .where(and(eq(billingPayments.id, id), eq(billingPayments.status, 'pending')))
    .returning();
  return row ?? null;
}

// Зачисление успешного платежа в одной транзакции:
// 1) атомарный перевод pending→succeeded (guard от гонок и повторных webhook'ов);
// 2) credit-запись в billing_transactions;
// 3) инкремент organization_billing.balance;
// 4) авто-снятие billingBlocked при положительном балансе
//    (та же пара обновлений, что и storage.setBillingBlocked(orgId, false)).
// Возвращает applied=false, если платёж уже обработан — повторное зачисление невозможно.
export async function applySucceededPayment(
  paymentId: number,
): Promise<{ applied: boolean; payment: BillingPayment | null }> {
  return db.transaction(async (tx) => {
    const [payment] = await tx
      .update(billingPayments)
      .set({ status: 'succeeded', updatedAt: new Date() })
      .where(and(eq(billingPayments.id, paymentId), eq(billingPayments.status, 'pending')))
      .returning();

    if (!payment) {
      const [current] = await tx
        .select()
        .from(billingPayments)
        .where(eq(billingPayments.id, paymentId))
        .limit(1);
      return { applied: false, payment: current ?? null };
    }

    const orgId = payment.organizationId;

    // Гарантируем наличие строки биллинга организации перед инкрементом.
    await tx
      .insert(organizationBilling)
      .values({ organizationId: orgId })
      .onConflictDoNothing({ target: organizationBilling.organizationId });

    const [billing] = await tx
      .update(organizationBilling)
      .set({
        balance: sql`${organizationBilling.balance} + ${payment.amount}::numeric`,
        updatedAt: new Date(),
      })
      .where(eq(organizationBilling.organizationId, orgId))
      .returning();

    await tx.insert(billingTransactions).values({
      organizationId: orgId,
      amount: payment.amount,
      type: 'credit',
      description: `Пополнение баланса (платёж ${payment.provider} ${payment.externalId})`,
      createdBy: null,
    });

    const newBalance = parseFloat(billing?.balance ?? '0');
    if (newBalance > 0) {
      await tx
        .update(organizations)
        .set({ billingBlocked: false, updatedAt: new Date() })
        .where(and(eq(organizations.id, orgId), eq(organizations.billingBlocked, true)));
      await tx
        .update(organizationBilling)
        .set({ blockedAt: null, updatedAt: new Date() })
        .where(eq(organizationBilling.organizationId, orgId));
    }

    return { applied: true, payment };
  });
}