All files / src/app/api/admin/referrals/campaigns/[id] route.ts

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export const dynamic = "force-dynamic";

import { NextRequest, NextResponse } from 'next/server';
import { } from "next-auth";
import { prisma } from "@/lib/prisma";
import { z } from "zod";
import {
  withAdmin,
  withErrorHandling,
  successResponse,
  ApiError,
  ApiSuccessResponse,
  ApiErrorResponse } from "@/lib/api";
import { RouteContext } from "@/lib/api/middleware";

interface RouteParams {
  params: Promise<{ id: string }>;
}

const UpdateCampaignSchema = z.object({
  name: z.string().min(1).optional(),
  referrerReward: z
    .object({
      type: z.enum(["points", "credit", "discount"]),
      value: z.number(),
      discountType: z.enum(["percentage", "fixed"]).optional() })
    .optional(),
  refereeReward: z
    .object({
      type: z.enum(["points", "credit", "discount"]),
      value: z.number(),
      discountType: z.enum(["percentage", "fixed"]).optional() })
    .optional(),
  minPurchase: z.number().nullable().optional(),
  isActive: z.boolean().optional() });

/**
 * GET /api/admin/referrals/campaigns/[id]
 * Get campaign details
 */
async function handleGet(_request: NextRequest,
  context: RouteContext | undefined): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
  const { id } = await (context as RouteParams).params;
  const campaignId = parseInt(id);

  const campaign = await prisma.referralProgram.findUnique({
    where: { id: campaignId } });

  if (!campaign) {
    throw ApiError.notFound("Campaign");
  }

  // Get referral stats
  const [totalReferrals, completedReferrals, pendingReferrals] =
    await Promise.all([
      prisma.referral.count({ where: { programId: campaignId } }),
      prisma.referral.count({
        where: { programId: campaignId, status: "rewarded" } }),
      prisma.referral.count({
        where: { programId: campaignId, status: "pending" } }),
    ]);

  return successResponse({
    ...campaign,
    stats: {
      totalReferrals,
      completedReferrals,
      pendingReferrals } });
}

/**
 * PATCH /api/admin/referrals/campaigns/[id]
 * Update campaign
 */
async function handlePatch(request: NextRequest,
  context: RouteContext | undefined): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
  const { id } = await (context as RouteParams).params;
  const campaignId = parseInt(id);
  const body = await request.json();

  const result = UpdateCampaignSchema.safeParse(body);
  if (!result.success) {
    throw ApiError.validation("Invalid campaign data", result.error.issues);
  }

  const validatedData = result.data;

  const campaign = await prisma.referralProgram.findUnique({
    where: { id: campaignId } });

  if (!campaign) {
    throw ApiError.notFound("Campaign");
  }

  const updatedCampaign = await prisma.referralProgram.update({
    where: { id: campaignId },
    data: {
      name: validatedData.name,
      referrerReward: validatedData.referrerReward,
      refereeReward: validatedData.refereeReward,
      minPurchase: validatedData.minPurchase,
      isActive: validatedData.isActive } });

  return successResponse(updatedCampaign);
}

/**
 * DELETE /api/admin/referrals/campaigns/[id]
 * Delete campaign
 */
async function handleDelete(_request: NextRequest,
  context: RouteContext | undefined): Promise<NextResponse<ApiSuccessResponse<unknown> | ApiErrorResponse>> {
  const { id } = await (context as RouteParams).params;
  const campaignId = parseInt(id);

  const campaign = await prisma.referralProgram.findUnique({
    where: { id: campaignId } });

  if (!campaign) {
    throw ApiError.notFound("Campaign");
  }

  // Check for existing referrals
  const referralCount = await prisma.referral.count({
    where: { programId: campaignId } });

  if (referralCount > 0) {
    throw ApiError.badRequest(
      `Cannot delete campaign with ${referralCount} referrals. Deactivate instead.`
    );
  }

  await prisma.referralProgram.delete({
    where: { id: campaignId } });

  return successResponse({ message: "Campaign deleted successfully" });
}

export const GET = withErrorHandling(withAdmin(handleGet));
export const PATCH = withErrorHandling(withAdmin(handlePatch));
export const DELETE = withErrorHandling(withAdmin(handleDelete));