import request from "supertest";
import { describe, it, expect, beforeAll, beforeEach, afterAll } from "vitest";
import appFactory from "./appFactory";
import { prisma, resetUser, ensureUser, U, cid, closePrisma } from "./helpers";
import type { FastifyInstance } from "fastify";

let app: FastifyInstance;

beforeAll(async () => {
  app = await appFactory();
});

afterAll(async () => {
  await app.close();
  await closePrisma();
});

describe("GET /transactions", () => {
  beforeEach(async () => {
    await resetUser(U);
    await ensureUser(U);

    const c = cid("c");
    await prisma.variableCategory.create({
      data: { id: c, userId: U, name: "Groceries", percent: 100, priority: 1, isSavings: false, balanceCents: 5000n },
    });

    // seed some transactions of different kinds/dates
    await prisma.transaction.createMany({
      data: [
        {
          id: `t_${Date.now()}_1`,
          userId: U,
          occurredAt: new Date("2025-01-03T12:00:00.000Z"),
          kind: "variable_spend",
          categoryId: c,
          amountCents: 1000n,
        },
        {
          id: `t_${Date.now()}_2`,
          userId: U,
          occurredAt: new Date("2025-01-10T12:00:00.000Z"),
          kind: "fixed_payment",
          planId: null,
          amountCents: 2000n,
        },
      ],
    });
  });

  afterAll(async () => {
    await closePrisma();
  });

  it("paginates + filters by kind/date", async () => {
    const res = await request(app.server)
      .get("/transactions?from=2025-01-02&to=2025-01-06&kind=variable_spend&page=1&limit=10")
      .set("x-user-id", U);

    expect(res.statusCode).toBe(200);
    const body = res.body;
    expect(Array.isArray(body.items)).toBe(true);
    expect(body.items.length).toBe(1);
    expect(body.items[0].kind).toBe("variable_spend");
  });
});