// tests/helpers.ts
import { PrismaClient } from "@prisma/client";

export const prisma = new PrismaClient();

// Handy test user id
export const U = "demo-user-1";

// Monotonic id helpers so we never collide with existing rows
let cseq = 0;
let pseq = 0;
export const cid = (base = "c") => `${base}_${Date.now()}_${cseq++}`;
export const pid = (base = "p") => `${base}_${Date.now()}_${pseq++}`;

/**
 * Hard-reset all data for a given user in dependency-safe order.
 * Also deletes the user row so tests can re-create/upsert cleanly.
 */
export async function resetUser(userId: string) {
  await prisma.$transaction([
    prisma.allocation.deleteMany({ where: { userId } }),
    prisma.transaction.deleteMany({ where: { userId } }),
    prisma.incomeEvent.deleteMany({ where: { userId } }),
    prisma.fixedPlan.deleteMany({ where: { userId } }),
    prisma.variableCategory.deleteMany({ where: { userId } }),
  ]);
  await prisma.user.deleteMany({ where: { id: userId } });
}

/** Ensure the user exists (id stable) */
export async function ensureUser(userId: string) {
  await prisma.user.upsert({
    where: { id: userId },
    update: {},
    create: { id: userId, email: `${userId}@demo.local` },
  });
}

/** Close Prisma after all tests */
export async function closePrisma() {
  await prisma.$disconnect();
}