import urlparse

from django.shortcuts import render_to_response
from django.template import RequestContext
from django.utils.translation import ugettext_lazy as _
from django.contrib import messages
from django.conf import settings
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.utils.http import urlencode

from dynamic_search.models import RecentSearch
from dynamic_search.api import perform_search
from dynamic_search.forms import SearchForm, AdvancedSearchForm
from dynamic_search.conf.settings import SHOW_OBJECT_TYPE
from dynamic_search.conf.settings import LIMIT


def results(request, extra_context=None):
    context = {}

    context.update({
        'query_string': request.GET,
        #'hide_header': True,
        'hide_links': True,
        'multi_select_as_buttons': True,
        'search_results_limit': LIMIT,
    })

    try:
        response = perform_search(request.GET)
        if response['shown_result_count'] != response['result_count']:
            title = _(u'results, (showing only %(shown_result_count)s out of %(result_count)s)') % {
                'shown_result_count': response['shown_result_count'],
                'result_count': response['result_count']}
        else:
            title = _(u'results')

        if extra_context:
            context.update(extra_context)
        query = urlencode(dict(request.GET.items()))

        if query:
            RecentSearch.objects.add_query_for_user(request.user, query, response['result_count'])

        context.update({
            'found_entries': response['model_list'],
            'object_list': response['flat_list'],
            'title': title,
            'time_delta': response['elapsed_time'],
        })
    except Exception, e:
        if settings.DEBUG:
            raise
        elif request.user.is_staff or request.user.is_superuser:
            messages.error(request, _(u'Search error: %s') % e)

    if SHOW_OBJECT_TYPE:
        context.update({'extra_columns':
            [{'name': _(u'type'), 'attribute': lambda x: x._meta.verbose_name[0].upper() + x._meta.verbose_name[1:]}]})

    return render_to_response('search_results.html', context,
                          context_instance=RequestContext(request))


def search(request, advanced=False):
    if advanced:
        form = AdvancedSearchForm(data=request.GET)
        return render_to_response('generic_form.html',
            {
                'form': form,
                'title': _(u'advanced search'),
                'form_action': reverse('results'),
                'submit_method': 'GET',
                'search_results_limit': LIMIT,
                'submit_label': _(u'Search'),
                'submit_icon_famfam': 'zoom',
            },
            context_instance=RequestContext(request)
        )
    else:
        if request.GET.get('source') != 'sidebar':
            # Don't include a form a top of the results if the search
            # was originated from the sidebar search form
            extra_context = {
                'submit_label': _(u'Search'),
                'submit_icon_famfam': 'zoom',
                'form_title': _(u'Search'),
                'form_hide_required_text': True,
            }
            if ('q' in request.GET) and request.GET['q'].strip():
                query_string = request.GET['q']
                form = SearchForm(initial={'q': query_string})
                extra_context.update({'form': form})
                return results(request, extra_context=extra_context)
            else:
                form = SearchForm()
                extra_context.update({'form': form})
                return results(request, extra_context=extra_context)
        else:
            # Already has a form with data, go to results
            return results(request)


def search_again(request):
    query = urlparse.urlparse(request.META.get('HTTP_REFERER', u'/')).query
    return HttpResponseRedirect('%s?%s' % (reverse('search_advanced'), query))