from django.template.loader import render_to_string
from django.utils.translation import ugettext_lazy as _
from debug_toolbar.panels import DebugPanel

class RequestVarsDebugPanel(DebugPanel):
    """
    A panel to display request variables (POST/GET, session, cookies).
    """
    name = 'RequestVars'
    has_content = True

    def nav_title(self):
        return _('Request Vars')

    def title(self):
        return _('Request Vars')

    def url(self):
        return ''

    def process_request(self, request):
        self.request = request

    def process_view(self, request, view_func, view_args, view_kwargs):
        self.view_func = view_func
        self.view_args = view_args
        self.view_kwargs = view_kwargs

    def content(self):
        context = {
            'get': [(k, self.request.GET.getlist(k)) for k in self.request.GET],
            'post': [(k, self.request.POST.getlist(k)) for k in self.request.POST],
            'cookies': [(k, self.request.COOKIES.get(k)) for k in self.request.COOKIES],
            'view_func': '%s.%s' % (self.view_func.__module__, self.view_func.__name__),
            'view_args': self.view_args,
            'view_kwargs': self.view_kwargs
        }
        if hasattr(self.request, 'session'):
            context['session'] = [(k, self.request.session.get(k)) for k in self.request.session.iterkeys()]

        return render_to_string('debug_toolbar/panels/request_vars.html', context)