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import { NextRequest, NextResponse } from 'next/server';
import { Session } from "next-auth";
import { prisma } from "@/lib/prisma";
import { Prisma } from "@prisma/client";
import { logger } from "@/lib/logging";
import { createPromotionSchema } from "@/lib/promotions/validators";
import {
withAdmin,
withErrorHandling,
successResponse,
createdResponse,
ApiError,
ApiSuccessResponse,
ApiErrorResponse } from "@/lib/api";
import { RouteContext } from "@/lib/api/middleware";
import type { AuthenticatedUser } from '@/lib/api/middleware/types';
/**
* GET /api/admin/promotions
* Get all promotions with filters
*/
async function handleGet(request: NextRequest): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
const searchParams = request.nextUrl.searchParams;
const page = parseInt(searchParams.get("page") || "1");
const limit = parseInt(searchParams.get("limit") || "20");
const search = searchParams.get("search") || "";
const type = searchParams.get("type") || "";
const status = searchParams.get("status") || "";
const skip = (page - 1) * limit;
const where: Prisma.PromotionWhereInput = {};
if (search) {
where.OR = [
{ name: { contains: search } },
{ displayName: { contains: search } },
{ description: { contains: search } },
];
}
if (type) {
where.type = type as Prisma.EnumPromotionTypeFilter;
}
const now = new Date();
if (status === "active") {
where.isActive = true;
where.startDate = { lte: now };
where.endDate = { gte: now };
} else if (status === "inactive") {
where.isActive = false;
} else if (status === "expired") {
where.endDate = { lt: now };
} else if (status === "scheduled") {
where.startDate = { gt: now };
}
const [promotions, total] = await Promise.all([
prisma.promotion.findMany({
where,
include: {
codes: { select: { id: true, code: true, usageCount: true } },
targetProducts: {
include: { product: { select: { id: true, title: true } } }},
targetCategories: {
include: { category: { select: { id: true, title: true } } }},
_count: { select: { usages: true, codes: true } }},
skip,
take: limit,
orderBy: [{ isActive: "desc" }, { priority: "desc" }, { createdAt: "desc" }]}),
prisma.promotion.count({ where }),
]);
// Add computed status to each promotion
const mapped = promotions.map((p) => {
let computedStatus: "active" | "inactive" | "expired" | "scheduled" =
"inactive";
if (!p.isActive) {
computedStatus = "inactive";
} else if (new Date(p.endDate) < now) {
computedStatus = "expired";
} else if (new Date(p.startDate) > now) {
computedStatus = "scheduled";
} else {
computedStatus = "active";
}
return {
...p,
computedStatus,
usageCount: p._count.usages,
codesCount: p._count.codes};
});
return successResponse({
promotions: mapped,
pagination: {
page,
limit,
total,
pages: Math.ceil(total / limit)}});
}
/**
* POST /api/admin/promotions
* Create a new promotion
*/
async function handlePost(
request: NextRequest,
_context: RouteContext | undefined,
_session: Session,
user: AuthenticatedUser
): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
const body = await request.json();
// Validate input
const validationResult = createPromotionSchema.safeParse(body);
if (!validationResult.success) {
throw ApiError.validation("Validation failed", validationResult.error.issues);
}
const data = validationResult.data;
// Create promotion with all related data in a transaction
const promotion = await prisma.$transaction(async (tx) => {
// Create the main promotion
const promo = await tx.promotion.create({
data: {
name: data.name,
displayName: data.displayName,
description: data.description,
type: data.type,
discountType: data.discountType,
discountValue: data.discountValue,
startDate: data.startDate,
endDate: data.endDate,
isActive: data.isActive ?? true,
usageLimit: data.usageLimit,
perCustomerLimit: data.perCustomerLimit,
minimumPurchase: data.minimumPurchase,
maximumDiscount: data.maximumDiscount,
targetType: data.targetType,
stackable: data.stackable ?? false,
priority: data.priority ?? 0,
createdBy: user.id}});
// Create target products
if (data.targetProductIds && data.targetProductIds.length > 0) {
await tx.promotionProduct.createMany({
data: data.targetProductIds.map((productId) => ({
promotionId: promo.id,
productId}))});
}
// Create target categories
if (data.targetCategoryIds && data.targetCategoryIds.length > 0) {
await tx.promotionCategory.createMany({
data: data.targetCategoryIds.map((categoryId) => ({
promotionId: promo.id,
categoryId}))});
}
// Create conditions
if (data.conditions && data.conditions.length > 0) {
await tx.promotionCondition.createMany({
data: data.conditions.map((condition) => ({
promotionId: promo.id,
conditionType: condition.conditionType,
operator: condition.operator,
value: condition.value}))});
}
// Create BOGO config
if (data.bogoConfig && data.type === "BOGO") {
await tx.bogoPromotion.create({
data: {
promotionId: promo.id,
buyQuantity: data.bogoConfig.buyQuantity,
getQuantity: data.bogoConfig.getQuantity,
getProductId: data.bogoConfig.getProductId,
getCategoryId: data.bogoConfig.getCategoryId,
discountPercent: data.bogoConfig.discountPercent ?? 100}});
}
// Create bundle config
if (data.bundleConfig && data.type === "BUNDLE") {
const bundle = await tx.bundlePromotion.create({
data: {
promotionId: promo.id,
bundlePrice: data.bundleConfig.bundlePrice}});
if (data.bundleConfig.products && data.bundleConfig.products.length > 0) {
await tx.bundleProduct.createMany({
data: data.bundleConfig.products.map((product) => ({
bundleId: bundle.id,
productId: product.productId,
quantity: product.quantity}))});
}
}
// Create free gift config
if (data.freeGiftConfig && data.type === "FREE_GIFT") {
await tx.freeGiftPromotion.create({
data: {
promotionId: promo.id,
giftProductId: data.freeGiftConfig.giftProductId,
giftQuantity: data.freeGiftConfig.giftQuantity ?? 1}});
}
// Create tiered config
if (data.tieredConfig && data.type === "TIERED") {
const tiered = await tx.tieredPromotion.create({
data: {
promotionId: promo.id}});
if (data.tieredConfig.tiers && data.tieredConfig.tiers.length > 0) {
await tx.promotionTier.createMany({
data: data.tieredConfig.tiers.map((tier) => ({
tieredPromotionId: tiered.id,
minQuantity: tier.minQuantity,
discountType: tier.discountType,
discountValue: tier.discountValue}))});
}
}
// Create flash sale config
if (data.flashSaleConfig && data.type === "FLASH_SALE") {
await tx.flashSale.create({
data: {
promotionId: promo.id,
headline: data.flashSaleConfig.headline,
subheadline: data.flashSaleConfig.subheadline,
bannerImage: data.flashSaleConfig.bannerImage,
countdown: data.flashSaleConfig.countdown ?? true}});
}
return promo;
});
// Fetch the complete promotion with all relations
const completePromotion = await prisma.promotion.findUnique({
where: { id: promotion.id },
include: {
codes: true,
targetProducts: {
include: { product: { select: { id: true, title: true } } }},
targetCategories: {
include: { category: { select: { id: true, title: true } } }},
conditions: true,
bogoConfig: true,
bundleConfig: {
include: {
products: {
include: { product: { select: { id: true, title: true } } }}}},
freeGiftConfig: {
include: { giftProduct: { select: { id: true, title: true } } }},
tieredConfig: { include: { tiers: true } },
flashSaleConfig: true}});
logger.info("Promotion created", { category: 'API', promotionId: promotion.id, name: promotion.name });
return createdResponse(completePromotion);
}
export const GET = withErrorHandling(withAdmin(handleGet));
export const POST = withErrorHandling(withAdmin(handlePost));
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