/**
 * Agent testability E2E tests.
 *
 * These tests demonstrate that bitvid is fully testable by Playwright CLI agents.
 * They exercise:
 *   1. Test harness installation and relay override
 *   2. Programmatic login (bypassing the UI)
 *   3. Seeding test data into a local mock relay
 *   4. Inspecting app state through the harness API
 *   5. Key data-testid selectors for UI interaction
 */

import { test, expect } from "./helpers/bitvidTestFixture";

test.describe("Agent testability infrastructure", () => {
  test("test harness installs when __test__=1 is set", async ({
    page,
    relay,
    gotoApp,
  }) => {
    await gotoApp();

    const harness = await page.evaluate(() => {
      const h = (window as any).__bitvidTest__;
      return h ? { version: h.version } : null;
    });

    expect(harness).not.toBeNull();
    expect(harness!.version).toBe(2);
  });

  test("relay overrides are applied via query params", async ({
    page,
    relay,
    gotoApp,
    relayUrl,
  }) => {
    await gotoApp();

    const state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });

    // Relay overrides should include our test relay
    expect(state.relays).not.toBeNull();
    if (state.relays) {
      const allRelays = state.relays.all || [];
      expect(allRelays).toContain(relayUrl);
    }
  });

  test("setTestRelays aligns relayManager and nostrClient", async ({
    page,
    gotoApp,
    relayUrl,
  }) => {
    await gotoApp();

    const result = await page.evaluate((url) => {
      const harness = (window as any).__bitvidTest__;
      if (!harness || typeof harness.setTestRelays !== "function") {
        throw new Error("setTestRelays missing");
      }
      return harness.setTestRelays([url]);
    }, relayUrl);
    expect(result.ok).toBe(true);

    const state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });
    expect(state.relays.read).toEqual([relayUrl]);
    expect(state.relayManager.read).toEqual([relayUrl]);
  });

  test("programmatic login works via test harness", async ({
    page,
    relay,
    gotoApp,
    loginAs,
    testPubkey,
  }) => {
    await gotoApp();

    const pubkey = await loginAs(page);
    expect(pubkey).toBe(testPubkey);

    const state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });

    expect(state.isLoggedIn).toBe(true);
    expect(state.activePubkey).toBe(testPubkey);
  });

  test("can seed events into mock relay and retrieve them", async ({
    relay,
    seedEvent,
    clearRelay,
  }) => {
    await clearRelay();

    await seedEvent({
      title: "Test Video Alpha",
      url: "https://example.com/alpha.mp4",
      dTag: "alpha-001",
    });

    await seedEvent({
      title: "Test Video Beta",
      url: "https://example.com/beta.mp4",
      magnet: "magnet:?xt=urn:btih:0000000000000000000000000000000000000000",
      dTag: "beta-001",
    });

    // Verify via HTTP API
    const httpUrl = (relay as any).httpUrl;
    const resp = await fetch(`${httpUrl}/events`);
    const events = await resp.json();
    expect(events.length).toBe(2);
  });

  test("relay health endpoint works", async ({ relay }) => {
    const httpUrl = (relay as any).httpUrl;
    const resp = await fetch(`${httpUrl}/health`);
    const health = await resp.json();
    expect(health.ok).toBe(true);
    expect(typeof health.eventCount).toBe("number");
    expect(typeof health.connectionCount).toBe("number");
  });
});

test.describe("Data-testid selectors are present", () => {
  test("critical UI elements have data-testid attributes", async ({
    page,
    relay,
    gotoApp,
  }) => {
    await gotoApp();

    // Header controls
    await expect(page.locator('[data-testid="login-button"]')).toBeVisible();
    await expect(page.locator('[data-testid="search-input"]')).toBeVisible();

    // Upload button is hidden until logged in — verify it exists in DOM
    const uploadBtn = page.locator('[data-testid="upload-button"]');
    await expect(uploadBtn).toBeAttached();
  });

  test("login modal has testid selectors", async ({
    page,
    relay,
    gotoApp,
  }) => {
    await gotoApp();

    // Open the login modal
    await page.locator('[data-testid="login-button"]').click();

    // Wait for modal to transition into an open, visible state.
    await page.waitForFunction(() => {
      const modal = document.querySelector('[data-testid="login-modal"]');
      if (!(modal instanceof HTMLElement)) {
        return false;
      }
      const openAttr = modal.getAttribute("data-open");
      return openAttr === "true" && !modal.classList.contains("hidden");
    }, { timeout: 15000 });

    // Check provider buttons exist
    const providerButtons = page.locator(
      '[data-testid="login-provider-button"]',
    );
    // At least one provider button should be present
    await expect(providerButtons.first()).toBeVisible({ timeout: 15000 });
  });
});

test.describe("App state inspection", () => {
  test("getAppState reports logged-out state by default", async ({
    page,
    relay,
    gotoApp,
  }) => {
    await gotoApp();

    const state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });

    expect(state.isLoggedIn).toBe(false);
    expect(state.activePubkey).toBeNull();
  });

  test("logout clears active signer", async ({
    page,
    relay,
    gotoApp,
    loginAs,
  }) => {
    await gotoApp();
    await loginAs(page);

    let state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });
    expect(state.isLoggedIn).toBe(true);

    await page.evaluate(() => {
      (window as any).__bitvidTest__.logout();
    });

    state = await page.evaluate(() => {
      return (window as any).__bitvidTest__.getAppState();
    });
    expect(state.isLoggedIn).toBe(false);
  });

  test("list sync event capture APIs are available", async ({
    page,
    gotoApp,
  }) => {
    await gotoApp();

    const result = await page.evaluate(() => {
      const harness = (window as any).__bitvidTest__;
      if (!harness) {
        throw new Error("Harness missing");
      }
      harness.clearListSyncEvents();
      window.dispatchEvent(
        new CustomEvent("bitvid:auth-loading-state", {
          detail: { lists: "loading", listsDetail: { ready: false } },
        }),
      );
      const events = harness.getListSyncEvents();
      return {
        count: events.length,
        firstSource: events[0]?.source || "",
      };
    });

    expect(result.count).toBeGreaterThan(0);
    expect(result.firstSource).toBe("auth-loading-state");
  });
});