import { test, expect } from '@playwright/test';

test.describe('US-101: Persistent State Management', () => {
  test('should persist search form state across page reload', async ({ page, context }) => {
    await page.goto('http://localhost:3002/ru-ru/schedule');
    await page.waitForLoadState('networkidle');

    // Fill search form
    await page
      .locator('input[placeholder*="city"], [aria-label*="город отправления"]')
      .first()
      .fill('Moscow');
    await page
      .locator('input[placeholder*="city"], [aria-label*="город прибытия"]')
      .nth(1)
      .fill('St Petersburg');

    // Reload page
    await page.reload();
    await page.waitForLoadState('networkidle');

    // Check that form values are still there
    const fromInput = await page.locator('input').first().inputValue();
    const toInput = await page.locator('input').nth(1).inputValue();

    expect(fromInput).toBe('Moscow');
    expect(toInput).toBe('St Petersburg');
  });

  test('should respect 30-day expiration for persisted state', async ({ page }) => {
    await page.goto('http://localhost:3002/ru-ru/schedule');

    // Store data with old timestamp (31 days ago)
    await page.evaluate(() => {
      const thirtyOneDaysAgo = Date.now() - 31 * 24 * 60 * 60 * 1000;
      const data = JSON.stringify({
        value: { test: 'data' },
        timestamp: thirtyOneDaysAgo,
      });
      localStorage.setItem('aeroflot_expiredTest', data);
    });

    // Reload and check if expired data is gone
    await page.reload();
    await page.waitForLoadState('networkidle');

    const expiredData = await page.evaluate(() => {
      return localStorage.getItem('aeroflot_expiredTest');
    });

    expect(expiredData).toBeNull();
  });

  test('should handle localStorage quota gracefully', async ({ page }) => {
    await page.goto('http://localhost:3002/ru-ru/schedule');

    // Try to fill with large data (may trigger quota exceeded)
    const largeData = 'x'.repeat(10000);

    // Should not crash, should cleanup or fail gracefully
    const result = await page.evaluate(async (data) => {
      try {
        localStorage.setItem('aeroflot_largeData', data);
        return { success: true };
      } catch (error) {
        // Quota exceeded is acceptable
        return { success: false, quotaExceeded: true };
      }
    }, largeData);

    // Either succeeds or fails gracefully with quota exceeded
    expect(result.success || result.quotaExceeded).toBe(true);
  });

  test('should clear state when requested', async ({ page }) => {
    await page.goto('http://localhost:3002/ru-ru/schedule');

    // Store data
    await page.evaluate(() => {
      localStorage.setItem(
        'aeroflot_clearTest',
        JSON.stringify({
          value: { test: 'data' },
          timestamp: Date.now(),
        }),
      );
    });

    // Clear it
    await page.evaluate(() => {
      localStorage.removeItem('aeroflot_clearTest');
    });

    // Verify it's gone
    const cleared = await page.evaluate(() => {
      return localStorage.getItem('aeroflot_clearTest');
    });

    expect(cleared).toBeNull();
  });

  test('should console have zero errors', async ({ page }) => {
    const errors: string[] = [];
    page.on('console', (msg) => {
      if (msg.type() === 'error') errors.push(msg.text());
    });

    await page.goto('http://localhost:3002/ru-ru/schedule');
    await page.waitForLoadState('networkidle');

    // Interact with persistent state
    await page.locator('input').first().fill('Moscow');
    await page.reload();

    expect(errors).toHaveLength(0);
  });
});