# frozen_string_literal: true

require 'playwright'

RSpec.describe 'Authentication', type: :playwright do
  # Use RSpec's around hook to manage Playwright lifecycle
  around do |example|
    Playwright.create(playwright_cli_executable_path: './node_modules/.bin/playwright') do |playwright|
      playwright.chromium.launch(headless: true) do |browser|
        @browser = browser
        example.run
      end
    end
  end

  before(:each) do
    @context = @browser.new_context(viewport: { width: 1280, height: 800 })
    @page = @context.new_page
  end

  after(:each) do
    @context.close
  end

  describe 'Login Form Display' do
    it 'displays login page at /login' do
      @page.goto('http://localhost:2300/login')

      expect(@page.locator('h1').text_content).to include('Login')
    end

    it 'has email and password input fields' do
      @page.goto('http://localhost:2300/login')

      email_input = @page.locator('input[type="email"]')
      password_input = @page.locator('input[type="password"]')

      expect(email_input.count).to be > 0
      expect(password_input.count).to be > 0
    end

    it 'has a login form with POST method' do
      @page.goto('http://localhost:2300/login')

      form = @page.locator('form[method="POST"]')
      expect(form.count).to be > 0
    end

    it 'includes CSRF token in login form' do
      @page.goto('http://localhost:2300/login')

      csrf_input = @page.locator('input[name="_csrf_token"]')
      expect(csrf_input.count).to be > 0
      expect(csrf_input.input_value).not_to be_empty
    end
  end

  describe 'Login Flow' do
    before(:all) do
      # Admin user credentials for testing
      @admin_email = 'david@dhg.lol'
      @admin_password = 'admin'
    end

    it 'successfully logs in with valid credentials' do
      @page.goto('http://localhost:2300/login')

      # Fill in login form
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)

      # Submit form
      @page.locator('button[type="submit"]').click

      # Should redirect to rankings page
      expect(@page.url).to include('/')
    end

    it 'shows success message after login' do
      @page.goto('http://localhost:2300/login')

      # Fill in login form
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)

      # Submit form
      @page.locator('button[type="submit"]').click

      # Should redirect to rankings page
      expect(@page.url).to include('/')
    end

    it 'redirects to admin dashboard when logged in' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # After login, user is redirected to rankings
      # Then navigate to admin
      @page.goto('http://localhost:2300/admin')

      # Should see admin dashboard
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')
    end
  end

  describe 'Failed Login Scenarios' do
    it 'rejects invalid email' do
      @page.goto('http://localhost:2300/login')

      @page.locator('input[type="email"]').fill('invalid@example.com')
      @page.locator('input[type="password"]').fill('wrongpassword')
      @page.locator('button[type="submit"]').click

      # Should show error message
      page_content = @page.content
      expect(page_content).to include('Invalid email or password')
    end

    it 'rejects invalid password' do
      @page.goto('http://localhost:2300/login')

      @page.locator('input[type="email"]').fill('david@dhg.lol')
      @page.locator('input[type="password"]').fill('wrongpassword')
      @page.locator('button[type="submit"]').click

      # Should show error message
      page_content = @page.content
      expect(page_content).to include('Invalid email or password')
    end

    it 'requires email field' do
      @page.goto('http://localhost:2300/login')

      @page.locator('input[type="password"]').fill('somepassword')
      @page.locator('button[type="submit"]').click

      # Browser validation should prevent submission
      # Or server should handle empty email
      page_content = @page.content
      # Either an error or the form should remain
      expect(page_content).to include('Login')
    end

    it 'requires password field' do
      @page.goto('http://localhost:2300/login')

      @page.locator('input[type="email"]').fill('david@dhg.lol')
      @page.locator('button[type="submit"]').click

      # Browser validation should prevent submission
      page_content = @page.content
      expect(page_content).to include('Login')
    end
  end

  describe 'Session Management' do
    before(:all) do
      @admin_email = 'david@dhg.lol'
      @admin_password = 'admin'
    end

    it 'creates session after successful login' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Check that session cookie is set
      cookies = @context.cookies
      session_cookie = cookies.find { |c| c['name'] == 'rack.session' }
      
      expect(session_cookie).not_to be_nil
      expect(session_cookie['value']).not_to be_empty
    end

    it 'persists session across page reloads' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Verify we're logged in
      @page.goto('http://localhost:2300/admin')
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')

      # Reload page
      @page.reload

      # Should still be logged in
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')
    end
  end

  describe 'Logout Functionality' do
    before(:all) do
      @admin_email = 'david@dhg.lol'
      @admin_password = 'admin'
    end

    it 'logs out user when clicking logout link' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Verify logged in - check for Logout link in navigation
      # Navigate to admin to confirm login
      @page.goto('http://localhost:2300/admin')
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')

      # Click logout - use first match since logout may appear in multiple places
      @page.locator('a[href="/logout"]').first.click

      # After logout, check we're back at rankings
      expect(@page.url).to include('/')
    end

    it 'clears session after logout' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Navigate to admin to verify logged in
      @page.goto('http://localhost:2300/admin')
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')

      # Logout
      @page.locator('a[href="/logout"]').first.click

      # Try to access admin page again - should redirect (not show admin dashboard)
      @page.goto('http://localhost:2300/admin')
      
      # Should not see admin dashboard
      expect(@page.locator('h1').text_content).not_to include('Admin Dashboard')
    end
  end

  describe 'Authorization Redirects' do
    before(:all) do
      @admin_email = 'david@dhg.lol'
      @admin_password = 'admin'
    end

    it 'redirects to rankings when accessing admin page without auth' do
      @page.goto('http://localhost:2300/admin')

      # Unauthenticated users are redirected to rankings page
      expect(@page.url).to include('/')
      expect(@page.locator('h1').text_content).to include('Rankings')
    end

    it 'allows access to admin page after login' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Navigate to admin page
      @page.goto('http://localhost:2300/admin')

      # Should see admin dashboard
      expect(@page.locator('h1').text_content).to include('Admin Dashboard')
    end

    it 'redirects to rankings after logout when accessing admin page' do
      @page.goto('http://localhost:2300/login')

      # Login
      @page.locator('input[type="email"]').fill(@admin_email)
      @page.locator('input[type="password"]').fill(@admin_password)
      @page.locator('button[type="submit"]').click

      # Go to admin page
      @page.goto('http://localhost:2300/admin')
      expect(@page.url).to include('/admin')

      # Click logout link in admin page
      # Note: logout link is in bottom nav on mobile, main nav on desktop
      @page.locator('a[href="/logout"]').first.click

      # After logout, try to access admin page again
      @page.goto('http://localhost:2300/admin')

      # Should redirect to rankings (unauthenticated users see rankings, not login)
      expect(@page.url).to include('/')
    end
  end
end