119 lines
3.2 KiB
TypeScript
119 lines
3.2 KiB
TypeScript
// src/lib/validators/reserveLimitValidator.ts
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import { prisma } from "@/lib/prisma";
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type LimitMethod = "block" | "all";
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type LimitType = "set" | "person";
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interface LimitCheckParams {
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reserve_num: number;
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// block のときのみ必要（"HH:mm:ss"）
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reserve_time?: string;
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/**
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* この予約が占有するカウント
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* limit_type=set のときは 1
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* limit_type=person のときは (cust_parent + cust_child)
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* フロントの事前確認なら未指定でもOK（現在の満席判定だけ返す）
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*/
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requestedCount?: number;
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}
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/**
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* 開催設定の制限と現在の予約数を見て、満席か/受付可能かを判定する共通関数
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* - ok=true: 受付可能
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* - ok=false: 満席（message="予約定員に達しています"）
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* - extra: 現在カウント/上限/残数 も返すのでUIにも利用可
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*/
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export async function checkReserveLimit(params: LimitCheckParams) {
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const { reserve_num, reserve_time, requestedCount } = params;
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const setting = await prisma.reserveSetting.findUnique({
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where: { autonum: reserve_num },
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select: {
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limit_method: true, // "block" | "all"
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limit_type: true, // "set" | "person"
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reserve_limit: true, // number
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},
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});
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if (!setting) {
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return { ok: false, message: "開催設定が存在しません" as const };
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}
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const method = setting.limit_method as LimitMethod;
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const type = setting.limit_type as LimitType;
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const limit = setting.reserve_limit;
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let currentCount = 0;
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// ---- 無制限処理を先に ----
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if (limit === 0) {
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return {
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ok: true,
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message: "",
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currentCount,
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limit,
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remain: Infinity,
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method,
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type,
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};
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}
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if (method === "block") {
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if (!reserve_time) {
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return { ok: false, message: "来場時間が必要です" as const };
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}
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if (type === "set") {
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currentCount = await prisma.reserveCustomer.count({
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where: { reserve_num, reserve_time, cancel_flag: 0 },
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});
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} else {
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const agg = await prisma.reserveCustomer.aggregate({
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where: { reserve_num, reserve_time, cancel_flag: 0 },
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_sum: { cust_parent: true, cust_child: true },
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});
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currentCount = (agg._sum.cust_parent ?? 0) + (agg._sum.cust_child ?? 0);
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}
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} else {
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// method === "all"
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if (type === "set") {
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currentCount = await prisma.reserveCustomer.count({
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where: { reserve_num, cancel_flag: 0 },
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});
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} else {
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const agg = await prisma.reserveCustomer.aggregate({
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where: { reserve_num, cancel_flag: 0 },
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_sum: { cust_parent: true, cust_child: true },
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});
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currentCount = (agg._sum.cust_parent ?? 0) + (agg._sum.cust_child ?? 0);
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}
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}
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// 事前確認（requestedCount 未指定）のときは「現在満席かどうか」だけ返す
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if (requestedCount == null) {
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const ok = currentCount < limit;
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return {
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ok,
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message: ok ? "" : ("予約定員に達しています" as const),
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currentCount,
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limit,
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remain: Math.max(0, limit - currentCount),
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method,
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type,
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};
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}
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// 予約実行時は今回の予約分も加味して判定
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const willBe = currentCount + requestedCount;
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const ok = willBe <= limit;
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return {
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ok,
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message: ok ? "" : ("予約定員に達しています" as const),
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currentCount,
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limit,
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remain: Math.max(0, limit - currentCount),
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method,
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type,
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};
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}
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