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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312
apps/api/src/domains/settlement/settlement.service.ts
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312
apps/api/src/domains/settlement/settlement.service.ts
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import { Injectable, BadRequestException, NotFoundException } 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 { AgentsService } from '../agent/agents.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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import {
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settleSelection,
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calculatePayout,
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calculateParlayPayout,
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ScoreInput,
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FT_CORRECT_SCORE_TEMPLATE,
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HT_CORRECT_SCORE_TEMPLATE,
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} from './domain/settlement-calculator';
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@Injectable()
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export class SettlementService {
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constructor(
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private prisma: PrismaService,
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private wallet: WalletService,
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private agents: AgentsService,
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) {}
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async recordScore(
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matchId: bigint,
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htHome: number,
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htAway: number,
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ftHome: number,
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ftAway: number,
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operatorId: bigint,
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) {
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await this.prisma.matchScore.upsert({
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where: { matchId },
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create: { matchId, htHomeScore: htHome, htAwayScore: htAway, ftHomeScore: ftHome, ftAwayScore: ftAway, recordedBy: operatorId },
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update: { htHomeScore: htHome, htAwayScore: htAway, ftHomeScore: ftHome, ftAwayScore: ftAway, recordedBy: operatorId },
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});
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await this.prisma.match.update({
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where: { id: matchId },
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data: { status: 'PENDING_SETTLEMENT' },
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});
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return { matchId, htHome, htAway, ftHome, ftAway };
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}
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async previewSettlement(matchId: bigint, operatorId: bigint) {
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const score = await this.prisma.matchScore.findUnique({ where: { matchId } });
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if (!score) throw new BadRequestException('Score not recorded');
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const scoreInput: ScoreInput = {
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htHome: score.htHomeScore ?? 0,
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htAway: score.htAwayScore ?? 0,
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ftHome: score.ftHomeScore ?? 0,
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ftAway: score.ftAwayScore ?? 0,
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};
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const pendingBets = await this.prisma.bet.findMany({
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where: {
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status: 'PENDING',
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selections: { some: { matchId } },
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},
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include: { selections: true },
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});
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const parlayBets = await this.prisma.bet.findMany({
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where: {
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status: 'PENDING',
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betType: 'PARLAY',
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selections: { some: { matchId } },
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},
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include: { selections: true },
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});
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let totalPayout = new Decimal(0);
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let totalRefund = new Decimal(0);
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const items: Array<{ betId: bigint; betNo: string; result: string; payout: Decimal }> = [];
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for (const bet of pendingBets) {
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if (bet.betType === 'SINGLE') {
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const sel = bet.selections[0];
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const template =
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sel.marketType === 'FT_CORRECT_SCORE'
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? FT_CORRECT_SCORE_TEMPLATE
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: sel.marketType.includes('CORRECT_SCORE')
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? HT_CORRECT_SCORE_TEMPLATE
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: [];
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const result = settleSelection({
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marketType: sel.marketType,
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selectionCode: sel.selectionNameSnapshot.includes('-')
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? `SCORE_${sel.selectionNameSnapshot.replace('-', '_')}`
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: sel.selectionNameSnapshot,
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handicapLine: sel.handicapLine ? Number(sel.handicapLine) : null,
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totalLine: sel.totalLine ? Number(sel.totalLine) : null,
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score: scoreInput,
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templateScores: template,
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});
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const payout = calculatePayout(bet.stake, sel.odds, result);
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items.push({ betId: bet.id, betNo: bet.betNo, result, payout });
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if (result === 'LOSE') {
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// no payout
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} else if (result === 'PUSH' || result === 'VOID') {
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totalRefund = totalRefund.add(bet.stake);
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} else {
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totalPayout = totalPayout.add(payout);
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}
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}
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}
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const batch = await this.prisma.settlementBatch.create({
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data: {
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matchId,
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batchNo: generateBatchNo('STL'),
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htHomeScore: score.htHomeScore,
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htAwayScore: score.htAwayScore,
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ftHomeScore: score.ftHomeScore,
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ftAwayScore: score.ftAwayScore,
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status: 'PREVIEW',
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totalBets: pendingBets.length,
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totalPayout,
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totalRefund,
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operatorId,
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},
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});
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return {
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batch,
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score: scoreInput,
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singleBetCount: pendingBets.filter((b) => b.betType === 'SINGLE').length,
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parlayBetCount: parlayBets.length,
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items,
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totalPayout,
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totalRefund,
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};
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}
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async confirmSettlement(batchId: bigint, operatorId: bigint) {
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const batch = await this.prisma.settlementBatch.findUnique({
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where: { id: batchId },
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include: { match: true },
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});
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if (!batch) throw new NotFoundException('Batch not found');
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if (batch.status !== 'PREVIEW') throw new BadRequestException('Batch already confirmed');
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const score = await this.prisma.matchScore.findUnique({
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where: { matchId: batch.matchId },
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});
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if (!score) throw new BadRequestException('Score not found');
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const scoreInput: ScoreInput = {
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htHome: score.htHomeScore ?? 0,
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htAway: score.htAwayScore ?? 0,
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ftHome: score.ftHomeScore ?? 0,
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ftAway: score.ftAwayScore ?? 0,
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};
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const pendingBets = await this.prisma.bet.findMany({
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where: {
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status: 'PENDING',
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selections: { some: { matchId: batch.matchId } },
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},
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include: { selections: true, user: true },
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});
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const agentIds = new Set<bigint>();
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await this.prisma.$transaction(async (tx) => {
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for (const bet of pendingBets) {
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if (bet.betType === 'SINGLE') {
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const sel = bet.selections[0];
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const selection = await tx.marketSelection.findUnique({
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where: { id: sel.selectionId },
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});
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const result = settleSelection({
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marketType: sel.marketType,
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selectionCode: selection?.selectionCode ?? sel.selectionNameSnapshot,
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handicapLine: sel.handicapLine ? Number(sel.handicapLine) : null,
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totalLine: sel.totalLine ? Number(sel.totalLine) : null,
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score: scoreInput,
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templateScores:
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sel.marketType === 'FT_CORRECT_SCORE'
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? FT_CORRECT_SCORE_TEMPLATE
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: HT_CORRECT_SCORE_TEMPLATE,
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});
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const payout = calculatePayout(bet.stake, sel.odds, result);
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const betStatus =
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result === 'LOSE' ? 'LOST' : result === 'PUSH' || result === 'VOID' ? 'PUSH' : 'WON';
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await tx.bet.update({
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where: { id: bet.id },
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data: {
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status: betStatus,
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actualReturn: payout,
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settledAt: new Date(),
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},
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});
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await tx.betSelection.update({
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where: { id: sel.id },
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data: { resultStatus: result, effectiveOdds: sel.odds },
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});
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await this.wallet.settleBet(
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bet.userId,
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bet.stake,
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payout,
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bet.betNo,
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result === 'HALF_WIN' ? 'HALF_WIN' : result === 'HALF_LOSE' ? 'HALF_LOSE' : result as 'WIN' | 'LOSE' | 'PUSH' | 'VOID',
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);
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if (bet.agentId) agentIds.add(bet.agentId);
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await tx.settlementItem.create({
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data: {
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batchId,
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betId: bet.id,
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userId: bet.userId,
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result: betStatus,
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payout,
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},
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});
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} else {
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// Parlay: update this leg's result, check if all legs settled
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for (const sel of bet.selections) {
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if (sel.matchId?.toString() === batch.matchId.toString()) {
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const selection = await tx.marketSelection.findUnique({
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where: { id: sel.selectionId },
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});
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const result = settleSelection({
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marketType: sel.marketType,
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selectionCode: selection?.selectionCode ?? '',
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handicapLine: sel.handicapLine ? Number(sel.handicapLine) : null,
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totalLine: sel.totalLine ? Number(sel.totalLine) : null,
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score: scoreInput,
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});
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await tx.betSelection.update({
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where: { id: sel.id },
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data: { resultStatus: result },
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});
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}
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}
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const updated = await tx.betSelection.findMany({ where: { betId: bet.id } });
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const allHaveResult = updated.every((s) => s.resultStatus != null);
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if (allHaveResult) {
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const legResults = updated.map((s) => ({
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odds: s.odds,
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result: s.resultStatus as 'WIN' | 'LOSE' | 'PUSH' | 'VOID' | 'HALF_WIN' | 'HALF_LOSE',
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}));
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const parlayResult = calculateParlayPayout(bet.stake, legResults);
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await tx.bet.update({
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where: { id: bet.id },
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data: {
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status: parlayResult.betResult === 'LOST' ? 'LOST' : parlayResult.betResult === 'PUSH' ? 'PUSH' : 'WON',
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actualReturn: parlayResult.payout,
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settledAt: new Date(),
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},
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});
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await this.wallet.settleBet(
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bet.userId,
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bet.stake,
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parlayResult.payout,
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bet.betNo,
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parlayResult.betResult === 'LOST' ? 'LOSE' : parlayResult.betResult === 'PUSH' ? 'PUSH' : 'WIN',
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);
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if (bet.agentId) agentIds.add(bet.agentId);
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}
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}
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}
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await tx.settlementBatch.update({
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where: { id: batchId },
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data: { status: 'CONFIRMED', confirmedAt: new Date() },
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});
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await tx.match.update({
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where: { id: batch.matchId },
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data: { status: 'SETTLED' },
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});
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});
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for (const agentId of agentIds) {
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await this.agents.recalculateUsedCredit(agentId);
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}
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return { success: true, batchId: batchId.toString() };
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}
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async voidMatchBets(matchId: bigint) {
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const bets = await this.prisma.bet.findMany({
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where: { status: 'PENDING', selections: { some: { matchId } } },
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});
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for (const bet of bets) {
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await this.wallet.settleBet(bet.userId, bet.stake, bet.stake, bet.betNo, 'VOID');
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await this.prisma.bet.update({
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where: { id: bet.id },
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data: { status: 'VOID', actualReturn: bet.stake, settledAt: new Date() },
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});
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}
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return { voidedCount: bets.length };
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}
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}
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