import os
import re
import unittest

from server.Server import Server

REPO_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

class TestDashboardStaticAssets(unittest.IsolatedAsyncioTestCase):
  def setUp(self):
    self.server = Server(
      data_path=REPO_ROOT,
      snake_type='PrismBattleSnake',
      storage_type='memory',
      metrics_backend='memory',
      gameplay_db_enabled=False,
    )

  def _static_url(self):
    return self.server.app.jinja_env.globals['static_url']

  async def test_static_url_carries_file_mtime(self):
    asset = 'js/GameBoard.js'
    expected_version = int(os.path.getmtime(
      os.path.join(self.server.app.static_folder, asset)
    ))

    async with self.server.app.test_request_context('/dashboard'):
      url = self._static_url()(asset)

    self.assertEqual(url, f'/files/{asset}?v={expected_version}')

  async def test_static_url_tolerates_missing_asset(self):
    async with self.server.app.test_request_context('/dashboard'):
      url = self._static_url()('js/DoesNotExist.js')

    self.assertEqual(url, '/files/js/DoesNotExist.js?v=0')

  async def test_dashboard_page_versions_every_static_asset(self):
    client = self.server.app.test_client()
    response = await client.get('/dashboard')
    self.assertEqual(response.status_code, 200)
    body = await response.get_data(as_text=True)

    references = re.findall(r'(?:href|src)="(/files/[^"]+)"', body)
    self.assertTrue(references, 'dashboard page referenced no static assets')
    for reference in references:
      self.assertRegex(reference, r'\?v=\d+$', f'unversioned static asset: {reference}')

if __name__ == '__main__':
  unittest.main()