import time
from .os_utils import get_os_info
from django.conf import settings

def app_version(request):
    os_icon, os_name = get_os_info()
    page_gen_time = ''
    if hasattr(request, '_start_time') and request._start_time:
        elapsed = time.time() - request._start_time
        page_gen_time = f"{elapsed * 1000:.0f}ms"
    return {
        'APP_ENV': 'dev' if settings.DEBUG else 'prod',
        'GIT_COMMIT_HASH': getattr(settings, 'GIT_COMMIT_HASH', 'unknown'),
        'OS_ICON': os_icon,
        'OS_NAME': os_name,
        'PAGE_GEN_TIME': page_gen_time,
    }