重构 API 为 8 领域 + 应用层架构
将后端模块拆分为 domains、applications、shared 三层，结算计算器移入 domain 纯函数目录，API 路径与测试保持不变。 Co-authored-by: Cursor <cursoragent@cursor.com>
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296
apps/api/src/domains/agent/agents.service.ts
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296
apps/api/src/domains/agent/agents.service.ts
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import { Injectable, BadRequestException, ForbiddenException } from '@nestjs/common';
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import { PrismaService } from '../../shared/prisma/prisma.service';
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import { WalletService } from '../ledger/wallet.service';
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import { AuthService } from '../identity/auth.service';
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import { Decimal } from '@prisma/client/runtime/library';
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import { generateBatchNo } from '../../shared/common/decorators';
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@Injectable()
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export class AgentsService {
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constructor(
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private prisma: PrismaService,
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private wallet: WalletService,
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private auth: AuthService,
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) {}
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async getProfile(agentId: bigint) {
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const profile = await this.prisma.agentProfile.findUnique({
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where: { userId: agentId },
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});
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if (!profile) throw new BadRequestException('Agent profile not found');
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const available = new Decimal(profile.creditLimit).sub(profile.usedCredit);
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return { ...profile, availableCredit: available };
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}
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async recalculateUsedCredit(agentId: bigint) {
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const directPlayers = await this.prisma.user.findMany({
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where: { parentId: agentId, userType: 'PLAYER' },
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include: { wallet: true },
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});
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let directLiability = new Decimal(0);
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for (const p of directPlayers) {
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if (p.wallet) {
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directLiability = directLiability
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.add(p.wallet.availableBalance)
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.add(p.wallet.frozenBalance);
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}
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}
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const childAgents = await this.prisma.agentProfile.findMany({
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where: { parentAgentId: agentId },
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});
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let childExposure = new Decimal(0);
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for (const child of childAgents) {
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const exposure = Decimal.max(child.creditLimit, child.usedCredit);
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childExposure = childExposure.add(exposure);
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}
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const usedCredit = directLiability.add(childExposure);
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await this.prisma.agentProfile.update({
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where: { userId: agentId },
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data: {
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usedCredit,
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directPlayerLiability: directLiability,
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childAgentExposure: childExposure,
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},
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});
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return usedCredit;
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}
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async adjustCredit(
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agentId: bigint,
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amount: Decimal | number,
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operatorId: bigint,
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requestId: string,
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remark?: string,
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) {
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const amt = new Decimal(amount);
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const profile = await this.prisma.agentProfile.findUnique({
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where: { userId: agentId },
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});
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if (!profile) throw new BadRequestException('Agent not found');
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const creditBefore = profile.creditLimit;
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const creditAfter = creditBefore.add(amt);
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if (creditAfter.lt(0)) throw new BadRequestException('Credit limit cannot be negative');
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await this.prisma.$transaction(async (tx) => {
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await tx.agentProfile.update({
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where: { userId: agentId },
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data: { creditLimit: creditAfter },
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});
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await tx.agentCreditTransaction.create({
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data: {
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agentId,
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transactionType: amt.gte(0) ? 'CREDIT_INCREASE' : 'CREDIT_DECREASE',
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amount: amt,
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creditBefore,
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creditAfter,
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operatorId,
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requestId,
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remark,
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},
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});
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});
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if (profile.parentAgentId) {
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await this.recalculateUsedCredit(profile.parentAgentId);
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}
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return { creditAfter };
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}
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async depositToPlayer(
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agentId: bigint,
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playerId: bigint,
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amount: number,
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requestId: string,
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) {
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const player = await this.prisma.user.findUnique({ where: { id: playerId } });
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if (!player || player.parentId !== agentId) {
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throw new ForbiddenException('Can only deposit to direct players');
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}
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const profile = await this.getProfile(agentId);
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const available = new Decimal(profile.creditLimit).sub(profile.usedCredit);
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const amt = new Decimal(amount);
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if (available.lt(amt)) {
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throw new BadRequestException('Insufficient agent credit');
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}
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await this.wallet.deposit(playerId, amt, agentId, 'Agent deposit', requestId);
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await this.recalculateUsedCredit(agentId);
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return { success: true };
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}
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async withdrawFromPlayer(
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agentId: bigint,
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playerId: bigint,
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amount: number,
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requestId: string,
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) {
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const player = await this.prisma.user.findUnique({ where: { id: playerId } });
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if (!player || player.parentId !== agentId) {
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throw new ForbiddenException('Can only withdraw from direct players');
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}
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await this.wallet.withdraw(playerId, amount, agentId, 'Agent withdraw', requestId);
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await this.recalculateUsedCredit(agentId);
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return { success: true };
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}
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async createAgent(
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operatorId: bigint,
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data: {
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username: string;
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password: string;
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level: number;
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parentAgentId?: bigint;
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creditLimit?: number;
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},
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) {
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if (data.level === 2 && !data.parentAgentId) {
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throw new BadRequestException('Level 2 agent requires parent');
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}
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const hash = await this.auth.hashPassword(data.password);
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return this.prisma.$transaction(async (tx) => {
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const user = await tx.user.create({
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data: {
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username: data.username,
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userType: 'AGENT',
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parentId: data.parentAgentId,
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agentLevel: data.level,
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},
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});
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await tx.userAuth.create({
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data: { userId: user.id, passwordHash: hash },
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});
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await tx.agentProfile.create({
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data: {
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userId: user.id,
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level: data.level,
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parentAgentId: data.parentAgentId,
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creditLimit: data.creditLimit ?? 0,
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},
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});
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// Build closure table
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await tx.agentClosure.create({
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data: { ancestorId: user.id, descendantId: user.id, depth: 0 },
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});
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if (data.parentAgentId) {
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const ancestors = await tx.agentClosure.findMany({
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where: { descendantId: data.parentAgentId },
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});
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for (const a of ancestors) {
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await tx.agentClosure.create({
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data: {
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ancestorId: a.ancestorId,
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descendantId: user.id,
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depth: a.depth + 1,
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},
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});
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}
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if (data.parentAgentId) {
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await this.recalculateUsedCredit(data.parentAgentId);
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}
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}
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return user;
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});
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}
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async createPlayer(
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operatorId: bigint,
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data: { username: string; password: string; parentId: bigint },
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) {
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const hash = await this.auth.hashPassword(data.password);
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return this.prisma.$transaction(async (tx) => {
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const user = await tx.user.create({
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data: {
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username: data.username,
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userType: 'PLAYER',
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parentId: data.parentId,
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},
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});
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await tx.userAuth.create({
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data: { userId: user.id, passwordHash: hash },
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});
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await tx.wallet.create({
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data: { userId: user.id },
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});
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await tx.userPreference.create({
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data: { userId: user.id },
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});
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const parent = await tx.user.findUnique({ where: { id: data.parentId } });
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if (parent?.userType === 'AGENT') {
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await this.recalculateUsedCredit(data.parentId);
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}
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return user;
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});
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}
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async getDirectPlayers(agentId: bigint) {
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return this.prisma.user.findMany({
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where: { parentId: agentId, userType: 'PLAYER' },
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include: { wallet: true },
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});
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}
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async getChildAgents(agentId: bigint) {
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return this.prisma.agentProfile.findMany({
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where: { parentAgentId: agentId },
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include: { user: true },
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});
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}
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async getReportSummary(agentId: bigint) {
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const profile = await this.getProfile(agentId);
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const players = await this.getDirectPlayers(agentId);
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const today = new Date();
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today.setHours(0, 0, 0, 0);
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const todayBets = await this.prisma.bet.aggregate({
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where: {
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agentId,
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placedAt: { gte: today },
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},
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_sum: { stake: true, actualReturn: true },
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_count: true,
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});
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return {
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profile,
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directPlayerCount: players.length,
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directPlayerTotalBalance: players.reduce(
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(sum, p) =>
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sum +
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Number(p.wallet?.availableBalance ?? 0) +
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Number(p.wallet?.frozenBalance ?? 0),
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0,
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),
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todayBetCount: todayBets._count,
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todayStake: todayBets._sum.stake,
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todayReturn: todayBets._sum.actualReturn,
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};
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}
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}
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