import { test, expect } from "@playwright/test";
import { resolveUrl, getSessionCookie } from "./helpers";

/**
 * E2E tests for user endpoints: stats, profile, and account management.
 */
test.describe("User API", () => {
  let cookie: string;

  test.beforeEach(async ({ page }) => {
    cookie = await getSessionCookie(page);
  });

  test("1. User stats returns 200 for authenticated user", async ({ page }) => {
    const res = await page.request.get(resolveUrl("/api/user/stats"), {
      headers: { Cookie: cookie },
    });
    expect(res.status()).toBe(200);
    const data = await res.json();
    expect(data).toHaveProperty("totalComparisons");
    expect(data).toHaveProperty("totalViews");
    expect(typeof data.totalComparisons).toBe("number");
    expect(typeof data.totalViews).toBe("number");
  });

  test("2. User stats requires auth", async ({ page }) => {
    const res = await page.request.get(resolveUrl("/api/user/stats"));
    expect(res.status()).toBe(401);
  });

  test("3. User stats increments after new comparison", async ({ page }) => {
    const beforeRes = await page.request.get(resolveUrl("/api/user/stats"), {
      headers: { Cookie: cookie },
    });
    const before = await beforeRes.json();
    const countBefore = before.totalComparisons ?? 0;

    // Create a new comparison
    const createRes = await page.request.post(resolveUrl("/api/compare"), {
      data: { items: ["TypeScript", "JavaScript"] },
      headers: {
        "Content-Type": "application/json",
        Cookie: cookie,
        Accept: "text/event-stream",
      },
      timeout: 120_000,
    });

    if (createRes.status() === 200) {
      // Wait briefly for DB write
      await new Promise((r) => setTimeout(r, 2000));

      const afterRes = await page.request.get(resolveUrl("/api/user/stats"), {
        headers: { Cookie: cookie },
      });
      const after = await afterRes.json();
      expect(after.totalComparisons).toBeGreaterThanOrEqual(countBefore);
    }
  });

  test("4. User comparisons list pagination works", async ({ page }) => {
    const res = await page.request.get(resolveUrl("/api/user/comparisons?page=1&limit=5"), {
      headers: { Cookie: cookie },
    });
    expect(res.status()).toBe(200);
  });

  test("5. Auth session is bound to correct user", async ({ page }) => {
    const res = await page.request.get(resolveUrl("/api/user/stats"), {
      headers: { Cookie: cookie },
    });
    const data = await res.json();
    // Stats should be non-negative integers
    expect(data.totalComparisons).toBeGreaterThanOrEqual(0);
    expect(data.totalViews).toBeGreaterThanOrEqual(0);
  });
});