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

/**
 * Home Page E2E Tests
 * 
 * Tests the study list page at /
 * Covers: study loading, topic expansion, navigation
 */

test.describe('Home Page - Study List', () => {
  
  test.beforeEach(async ({ page }) => {
    // Navigate to home page
    await page.goto('/');
  });

  test('displays page header', async ({ page }) => {
    // Check header is visible
    await expect(page.locator('header')).toBeVisible();
    
    // Check for key header elements - Studies heading (exact match to avoid Inbox Studies)
    await expect(page.getByRole('heading', { name: 'Studies', exact: true })).toBeVisible({ timeout: 10000 });
  });

  test('shows aggregate statistics cards', async ({ page }) => {
    // Wait for stats to load
    await expect(page.getByText('Total Studies')).toBeVisible();
    await expect(page.getByText('Running')).toBeVisible();
    await expect(page.getByText('Total Trials')).toBeVisible();
    await expect(page.getByText('Best Overall')).toBeVisible();
  });

  test('loads studies table with topic folders', async ({ page }) => {
    // Wait for studies section (exact match to avoid Inbox Studies)
    await expect(page.getByRole('heading', { name: 'Studies', exact: true })).toBeVisible();
    
    // Wait for loading to complete - either see folders or empty state
    // Folders have "trials" text in them
    const folderLocator = page.locator('button:has-text("trials")');
    const emptyStateLocator = page.getByText('No studies found');
    
    // Wait for either studies loaded or empty state (10s timeout)
    await expect(folderLocator.first().or(emptyStateLocator)).toBeVisible({ timeout: 10000 });
  });

  test('expands topic folder to show studies', async ({ page }) => {
    // Wait for folders to load
    const folderButton = page.locator('button:has-text("trials")').first();
    
    // Wait for folder to be visible (studies loaded)
    await expect(folderButton).toBeVisible({ timeout: 10000 });
    
    // Click to expand
    await folderButton.click();
    
    // After expansion, study rows should be visible (they have status badges)
    // Status badges contain: running, completed, idle, paused, not_started
    const statusBadges = page.locator('span:has-text("running"), span:has-text("completed"), span:has-text("idle"), span:has-text("paused"), span:has-text("not_started")');
    await expect(statusBadges.first()).toBeVisible({ timeout: 5000 });
  });

  test('clicking study shows preview panel', async ({ page }) => {
    // Wait for and expand first folder
    const folderButton = page.locator('button:has-text("trials")').first();
    await expect(folderButton).toBeVisible({ timeout: 10000 });
    await folderButton.click();
    
    // Wait for expanded content and click first study row
    const studyRow = page.locator('.bg-dark-850\\/50 > div').first();
    await expect(studyRow).toBeVisible({ timeout: 5000 });
    await studyRow.click();
    
    // Preview panel should show with buttons - use exact match to avoid header nav button
    await expect(page.getByRole('button', { name: 'Canvas', exact: true })).toBeVisible({ timeout: 5000 });
    await expect(page.getByRole('button', { name: 'Open' })).toBeVisible();
  });

  test('Open button navigates to dashboard', async ({ page }) => {
    // Wait for and expand first folder
    const folderButton = page.locator('button:has-text("trials")').first();
    await expect(folderButton).toBeVisible({ timeout: 10000 });
    await folderButton.click();
    
    // Wait for and click study row
    const studyRow = page.locator('.bg-dark-850\\/50 > div').first();
    await expect(studyRow).toBeVisible({ timeout: 5000 });
    await studyRow.click();
    
    // Wait for and click Open button
    const openButton = page.getByRole('button', { name: 'Open' });
    await expect(openButton).toBeVisible({ timeout: 5000 });
    await openButton.click();
    
    // Should navigate to dashboard
    await expect(page).toHaveURL(/\/dashboard/);
  });

  test('Canvas button navigates to canvas view', async ({ page }) => {
    // Wait for and expand first folder
    const folderButton = page.locator('button:has-text("trials")').first();
    await expect(folderButton).toBeVisible({ timeout: 10000 });
    await folderButton.click();
    
    // Wait for and click study row
    const studyRow = page.locator('.bg-dark-850\\/50 > div').first();
    await expect(studyRow).toBeVisible({ timeout: 5000 });
    await studyRow.click();
    
    // Wait for and click Canvas button (exact match to avoid header nav)
    const canvasButton = page.getByRole('button', { name: 'Canvas', exact: true });
    await expect(canvasButton).toBeVisible({ timeout: 5000 });
    await canvasButton.click();
    
    // Should navigate to canvas
    await expect(page).toHaveURL(/\/canvas\//);
  });

  test('refresh button reloads studies', async ({ page }) => {
    // Find the main studies section refresh button (the one with visible text "Refresh")
    const refreshButton = page.getByText('Refresh');
    await expect(refreshButton).toBeVisible({ timeout: 5000 });
    
    // Click refresh
    await refreshButton.click();
    
    // Should show loading state or complete quickly
    // Just verify no errors occurred (exact match to avoid Inbox Studies)
    await expect(page.getByRole('heading', { name: 'Studies', exact: true })).toBeVisible();
  });
});

/**
 * Inbox Section Tests
 * 
 * Tests the new study intake workflow
 */
test.describe('Home Page - Inbox Section', () => {
  
  test.beforeEach(async ({ page }) => {
    await page.goto('/');
  });

  test('displays inbox section with header', async ({ page }) => {
    // Check for Study Inbox heading (section is expanded by default)
    const inboxHeading = page.getByRole('heading', { name: 'Study Inbox' });
    await expect(inboxHeading).toBeVisible({ timeout: 10000 });
  });

  test('inbox section shows pending count', async ({ page }) => {
    // Section should show pending studies count
    const pendingText = page.getByText(/\d+ pending studies/);
    await expect(pendingText).toBeVisible({ timeout: 10000 });
  });

  test('inbox has new study button', async ({ page }) => {
    // Section is expanded by default, look for the New Study button
    const newStudyButton = page.getByRole('button', { name: /New Study/ });
    await expect(newStudyButton).toBeVisible({ timeout: 10000 });
  });

  test('clicking new study shows create form', async ({ page }) => {
    // Click the New Study button
    const newStudyButton = page.getByRole('button', { name: /New Study/ });
    await expect(newStudyButton).toBeVisible({ timeout: 10000 });
    await newStudyButton.click();
    
    // Form should expand with input fields
    const studyNameInput = page.getByPlaceholder(/my_study/i).or(page.locator('input[type="text"]').first());
    await expect(studyNameInput).toBeVisible({ timeout: 5000 });
  });
});