fix: simplify balance billing and govern operation logs

api/src/billing/billing.service.ts

@@ -2,20 +2,9 @@ import { Injectable } from '@nestjs/common';
 import { Prisma } from '@prisma/client';
 import { PrismaService } from '../prisma/prisma.service';
 
-export interface CreateBillingPlanDto {
-  name: string;
-  priceCents: number;
-  smsUnits: number;
-  validDays: number;
-  status?: string;
-  description?: string;
-}
-
 export interface CreateTenantAccountDto {
   tenantId: string;
   balanceCents?: number;
-  smsUnits?: number;
-  creditCents?: number;
   status?: string;
 }
 
@@ -23,7 +12,6 @@ export interface CreateAccountTransactionDto {
   tenantId: string;
   transactionType: string;
   amountCents?: number;
-  smsUnits?: number;
   balanceAfter?: number;
   relatedType?: string;
   relatedId?: string;
@@ -40,9 +28,7 @@ export interface CreateBillingRuleDto {
 
 export interface CreateRechargeOrderDto {
   tenantId: string;
-  planId?: string;
-  amountCents?: number;
-  smsUnits?: number;
+  amountCents: number;
   payMethod?: string;
   operatorId?: string;
   remark?: string;
@@ -51,7 +37,6 @@ export interface CreateRechargeOrderDto {
 export interface CreateManualRechargeDto {
   tenantId: string;
   amountCents: number;
-  smsUnits?: number;
   operatorId?: string;
   remark?: string;
 }
@@ -68,7 +53,6 @@ export interface EstimateSmsCostDto {
 export interface BillingActionDto {
   tenantId: string;
   amountCents?: number;
-  smsUnits?: number;
   relatedType?: string;
   relatedId?: string;
   remark?: string;
@@ -88,23 +72,6 @@ export interface CreateSmsBillingRecordDto {
 export class BillingService {
   constructor(private readonly prisma: PrismaService) {}
 
-  listPlans() {
-    return this.prisma.billingPlan.findMany({ orderBy: { createdAt: 'desc' } });
-  }
-
-  createPlan(data: CreateBillingPlanDto) {
-    return this.prisma.billingPlan.create({
-      data: {
-        name: data.name,
-        priceCents: data.priceCents,
-        smsUnits: data.smsUnits,
-        validDays: data.validDays,
-        status: data.status ?? 'active',
-        description: data.description,
-      },
-    });
-  }
-
   listAccounts() {
     return this.prisma.tenantAccount.findMany({
       include: { tenant: true },
@@ -116,8 +83,6 @@ export class BillingService {
     const createData: Prisma.TenantAccountUncheckedCreateInput = {
       tenantId: data.tenantId,
       balanceCents: data.balanceCents ?? 0,
-      smsUnits: data.smsUnits ?? 0,
-      creditCents: data.creditCents ?? 0,
       status: data.status ?? 'active',
     };
     return this.prisma.tenantAccount.create({ data: createData });
@@ -126,7 +91,6 @@ export class BillingService {
   listRechargeOrders(tenantId?: string) {
     return this.prisma.rechargeOrder.findMany({
       where: tenantId ? { tenantId } : undefined,
-      include: { plan: true },
       orderBy: { createdAt: 'desc' },
     });
   }
@@ -137,7 +101,6 @@ export class BillingService {
         tenantId,
         payMethod: 'manual_topup',
       },
-      include: { plan: true },
       orderBy: { createdAt: 'desc' },
     });
     const orderIds = orders.map((order) => order.id);
@@ -161,16 +124,12 @@ export class BillingService {
   }
 
   async createRechargeOrder(data: CreateRechargeOrderDto) {
-    const plan = data.planId ? await this.prisma.billingPlan.findUnique({ where: { id: data.planId } }) : null;
-    const amountCents = data.amountCents ?? plan?.priceCents ?? 0;
-    const smsUnits = data.smsUnits ?? plan?.smsUnits ?? 0;
+    const amountCents = data.amountCents;
     const order = await this.prisma.rechargeOrder.create({
       data: {
         tenantId: data.tenantId,
-        planId: data.planId,
         orderNo: `R${Date.now()}${Math.floor(Math.random() * 10000).toString().padStart(4, '0')}`,
         amountCents,
-        smsUnits,
         status: 'paid',
         payMethod: data.payMethod ?? 'manual',
         paidAt: new Date(),
@@ -183,7 +142,6 @@ export class BillingService {
       tenantId: data.tenantId,
       transactionType: 'recharge',
       amountCents,
-      smsUnits,
       relatedType: 'recharge_order',
       relatedId: order.id,
       remark: data.remark,
@@ -196,7 +154,6 @@ export class BillingService {
     const order = await this.createRechargeOrder({
       tenantId: data.tenantId,
       amountCents: data.amountCents,
-      smsUnits: data.smsUnits ?? 0,
       payMethod: 'manual_topup',
       operatorId: data.operatorId,
       remark: data.remark,
@@ -210,7 +167,6 @@ export class BillingService {
         resourceId: order.id,
         detail: {
           amountCents: data.amountCents,
-          smsUnits: data.smsUnits ?? 0,
           orderNo: order.orderNo,
           remark: data.remark,
         } as Prisma.InputJsonValue,
@@ -239,15 +195,12 @@ export class BillingService {
   async checkAccount(data: BillingActionDto) {
     const account = await this.getAccountOrCreate(data.tenantId);
     const requiredAmount = data.amountCents ?? 0;
-    const requiredUnits = data.smsUnits ?? 0;
-    const availableAmount = account.balanceCents + account.creditCents;
+    const availableAmount = account.balanceCents;
     return {
       tenantId: data.tenantId,
       requiredAmount,
-      requiredUnits,
       availableAmount,
-      availableSmsUnits: account.smsUnits,
-      canSend: availableAmount >= requiredAmount && account.smsUnits >= requiredUnits,
+      canSend: availableAmount >= requiredAmount,
     };
   }
 
@@ -256,7 +209,6 @@ export class BillingService {
       ...data,
       transactionType: 'frozen',
       amountCents: -(data.amountCents ?? 0),
-      smsUnits: -(data.smsUnits ?? 0),
     });
   }
 
@@ -265,7 +217,6 @@ export class BillingService {
       ...data,
       transactionType: 'charged',
       amountCents: -(data.amountCents ?? 0),
-      smsUnits: -(data.smsUnits ?? 0),
     });
   }
 
@@ -274,7 +225,6 @@ export class BillingService {
       ...data,
       transactionType: 'released',
       amountCents: data.amountCents ?? 0,
-      smsUnits: data.smsUnits ?? 0,
     });
   }
 
@@ -283,7 +233,6 @@ export class BillingService {
       ...data,
       transactionType: 'refunded',
       amountCents: data.amountCents ?? 0,
-      smsUnits: data.smsUnits ?? 0,
     });
   }
 
@@ -292,7 +241,6 @@ export class BillingService {
       ...data,
       transactionType: 'adjusted',
       amountCents: data.amountCents ?? 0,
-      smsUnits: data.smsUnits ?? 0,
     });
   }
 
@@ -348,19 +296,17 @@ export class BillingService {
     return this.prisma.tenantAccount.upsert({
       where: { tenantId },
       update: {},
-      create: { tenantId, balanceCents: 0, smsUnits: 0, creditCents: 0, status: 'active' },
+      create: { tenantId, balanceCents: 0, status: 'active' },
     });
   }
 
   private async applyAccountDelta(data: CreateAccountTransactionDto) {
     const account = await this.getAccountOrCreate(data.tenantId);
     const nextBalance = account.balanceCents + (data.amountCents ?? 0);
-    const nextUnits = account.smsUnits + (data.smsUnits ?? 0);
     await this.prisma.tenantAccount.update({
       where: { tenantId: data.tenantId },
       data: {
         balanceCents: nextBalance,
-        smsUnits: nextUnits,
       },
     });
 
@@ -369,7 +315,6 @@ export class BillingService {
         tenantId: data.tenantId,
         transactionType: data.transactionType,
         amountCents: data.amountCents ?? 0,
-        smsUnits: data.smsUnits ?? 0,
         balanceAfter: nextBalance,
         relatedType: data.relatedType,
         relatedId: data.relatedId,