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

test.describe('Scenario 10: IndexedDB Snapshots (Export, Reset, Import)', () => {
  test('exports database snapshot, resets demo data, imports snapshot, and verifies restored state', async ({ page }) => {
    await page.goto('/settings');
    await page.waitForLoadState('domcontentloaded');

    // 1. Export database snapshot
    const exportBtn = page.locator('[data-testid="export-snapshot-btn"]');
    await expect(exportBtn).toBeVisible({ timeout: 15000 });

    const downloadPromise = page.waitForEvent('download');
    await exportBtn.click();
    const download = await downloadPromise;
    expect(download.suggestedFilename()).toContain('.json');

    // 2. Read downloaded snapshot content
    const downloadPath = await download.path();
    expect(downloadPath).toBeTruthy();

    // 3. Reset database to initial state
    const resetBtn = page.locator('[data-testid="reset-database-btn"]');
    await expect(resetBtn).toBeVisible();
    await resetBtn.click();

    await expect(page.locator('text=сброшена').or(page.locator('text=Сбросить')).first()).toBeVisible({ timeout: 5000 });

    // 4. Import the exported snapshot back
    if (downloadPath) {
      const fileInput = page.locator('[data-testid="import-snapshot-input"]');
      await fileInput.setInputFiles(downloadPath);

      // Verify successful import notification
      await expect(page.locator('text=успешно импортирован').or(page.locator('text=Импортировано')).first()).toBeVisible({ timeout: 10000 });
    }

    // 5. Reload page to ensure restored state persists
    await page.reload();
    await page.waitForLoadState('domcontentloaded');
    await expect(exportBtn).toBeVisible({ timeout: 15000 });
  });
});