from django.conf import settings

from django.contrib.auth.decorators import login_required

from django.contrib.auth.models import Group

from django.core.urlresolvers import reverse#, resolve

from django.core.paginator import Paginator, InvalidPage, EmptyPage

from django.http import (HttpResponseRedirect, HttpResponseForbidden )

from ldt.indexation import get_results_with_context, highlight_documents

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.template.loader import render_to_string

from django.utils.html import escape

from django.utils.translation import ugettext as _

from ldt.ldt_utils.forms import SearchForm

from ldt.ldt_utils.models import Content, Project, Segment

from ldt.ldt_utils.utils import boolean_convert

from ldt.ldt_utils.projectserializer import ProjectSerializer

from ldt.ldt_utils.views.content import get_contents_page

from ldt.ldt_utils.views.project import get_projects_page, get_published_projects_page

from ldt.security.utils import add_change_attr, get_userlist

from lxml.html import fragment_fromstring

from operator import itemgetter

from itertools import groupby

import base64

import django.core.urlresolvers

import ldt.auth as ldt_auth

import lxml.etree

@login_required

def home(request):

    num_page = 0

    # Prepare contents pagination

    content_nb, nb_ct_pages, content_list = get_contents_page(num_page, request.user)

    # get list of projects owned by the current user

    project_nb, nb_pj_pages, project_list = get_projects_page(num_page, request.user)

    #project_list = add_change_attr(request.user, Project.safe_objects.filter(owner=request.user)[:settings.LDT_MAX_PROJECTS_PER_PAGE]) #@UndefinedVariable

    is_gecko = ((request.META['HTTP_USER_AGENT'].lower().find("firefox")) > -1);

    # Resolve a URL

    #project_api_view, project_api_args, project_api_kwargs = resolve('/api/ldt/projects/c8448f21-272d-11e1-876b-c8bcc896c290.json')

    #match = resolve('/api/ldt/projects/c8448f21-272d-11e1-876b-c8bcc896c290.json')

    # Print the URL pattern that matches the URL

    #print match.url_name

    # render list

    return render_to_response("ldt/ldt_utils/workspace.html",

                              {'contents': content_list, 'nb_ct_pages': nb_ct_pages, 'content_nb': content_nb, 'current_content_page':float(num_page),

                               'projects': project_list, 'nb_pj_pages': nb_pj_pages, 'project_nb': project_nb, 'current_project_page':float(num_page),

                               'is_gecko': is_gecko, #'project_api_url':"match.url_name",

                               #'project_api_view':match.url_name,'project_api_args':"project_api_args",'project_api_kwargs':"project_api_kwargs"

                               },

                              context_instance=RequestContext(request))

@login_required

def groups(request): 

    # get list of all published projects

    group_list = request.user.groups.exclude(name=settings.PUBLIC_GROUP_NAME)

    group_list = sorted(group_list.all(), key=lambda group: group.name.lower())    

    group_list = add_change_attr(request.user, group_list)

    can_add_group = request.user.has_perm('auth.add_group')

    is_gecko = ((request.META['HTTP_USER_AGENT'].lower().find("firefox")) > -1);

    # render list

    return render_to_response("ldt/ldt_utils/groups.html",

                              {'groups': group_list,

                               'is_gecko': is_gecko,

                               'can_add_group': can_add_group},

                              context_instance=RequestContext(request))

@login_required

def published_project(request): 

    # get list of all published projects

    #project_list = Project.safe_objects.filter(state=2).exclude(title__startswith='front') #@UndefinedVariable

    num_page = 0

    project_nb, nb_pj_pages, project_list = get_published_projects_page(num_page)

    # Search form

    form = SearchForm()

    is_gecko = ((request.META['HTTP_USER_AGENT'].lower().find("firefox")) > -1);

    # render list

    return render_to_response("ldt/ldt_utils/published_projects.html",

                              {'projects': project_list, 'nb_pj_pages': nb_pj_pages, 'project_nb': project_nb, 'current_project_page':float(num_page), 

                               'form': form, 'is_gecko': is_gecko},

                              context_instance=RequestContext(request))

def popup_embed(request):

    json_url = request.GET.get("json_url")

    player_id = request.GET.get("player_id")

    ldt_id = request.GET.get("ldt_id")

    project = Project.safe_objects.get(ldt_id=ldt_id); #@UndefinedVariable

    stream_mode = project.stream_mode

    if stream_mode != "video":

        stream_mode = 'radio'

    player_width = 650

    player_height = 480

    if stream_mode == 'radio':

        player_height = 1

    if not ldt_auth.check_access(request.user, project):

        return HttpResponseForbidden(_("You can not access this project"))

    ps = ProjectSerializer(project, from_contents=False, from_display=True)

    annotations = ps.get_annotations(first_cutting=True)

    rend_dict = {'json_url':json_url, 'player_id':player_id, 'annotations':annotations, 'ldt_id': ldt_id, 'stream_mode': stream_mode, 'player_width': player_width, 'player_height': player_height}

    embed_rendered = dict((typestr,

                           (lambda s:escape(lxml.etree.tostring(fragment_fromstring(render_to_string("ldt/ldt_utils/partial/embed_%s.html" % (s), rend_dict, context_instance=RequestContext(request))), pretty_print=True)))(typestr))

                           for typestr in ('player', 'seo_body', 'seo_meta', 'links'))

    rend_dict['embed_rendered'] = embed_rendered

    return render_to_response("ldt/ldt_utils/embed_popup.html",

                              rend_dict,

                              context_instance=RequestContext(request))

def share_filter(request, filter, use_groups=False):

    use_groups = boolean_convert(use_groups)

    if not filter or len(filter) == 0:

        raise AttributeError("filter should be a string")

    filter = filter[1:]    

    resp = get_userlist(request.user, filter=filter)

    if use_groups:

        groups = Group.objects.filter(name__icontains=filter).exclude(name=settings.PUBLIC_GROUP_NAME)[0:20]

        for g in groups:

            resp.append({'name': g.name, 'id': g.id, 'type': 'group'})

    resp = sorted(resp, key=lambda elem: elem['name'].lower())

    return render_to_response("ldt/ldt_utils/partial/sharewith.html", {'elem_list' : resp}, context_instance=RequestContext(request))

def search_form(request): 

    form = SearchForm()

    return render_to_response('ldt/ldt_utils/search_form.html', {'form': form} , context_instance=RequestContext(request))

@login_required

def search_index(request):

    language_code = request.LANGUAGE_CODE[:2]

    nb = 0

    results = []

    search = ''

    field = 'all'

    sform = SearchForm(request.GET)

    if sform.is_valid():

        search = sform.cleaned_data["search"]

        queryStr = base64.urlsafe_b64encode(search.encode('utf8'))

        field = sform.cleaned_data["field"]

        page = sform.cleaned_data["page"] or 1

        ldt_pres = sform.cleaned_data["ldt_pres"]

        if ldt_pres:

            url = settings.WEB_URL + django.core.urlresolvers.reverse("ldt.ldt_utils.views.lignesdetemps.search_init", args=[field, queryStr])

            return render_to_response('ldt/ldt_utils/init_ldt_full.html', {'LDT_MEDIA_PREFIX': settings.LDT_MEDIA_PREFIX, 'colorurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/pkg/color.xml', 'i18nurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/pkg/i18n', 'language': language_code, 'baseurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/', 'url': url}, context_instance=RequestContext(request))

        else:                                            

            results, nb = get_search_results(request, search, field, page)            

    return render_to_response('ldt/ldt_utils/search_results.html', {'results': results, 'nb_results' : nb, 'search' : search, 'field': field, 'LDT_MEDIA_PREFIX': settings.LDT_MEDIA_PREFIX, 'colorurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/pkg/color.xml', 'i18nurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/pkg/i18n', 'language': language_code, 'baseurl': settings.LDT_MEDIA_PREFIX + 'swf/ldt/'}, context_instance=RequestContext(request))

def get_search_results(request, search, field, page, content_list=None):

    # We parse the author if necessary. For author search to work in every case, we have to transform the query author:cheese shop into author:"CHEESE SHOP"

    if u'author:' in search.lower() :

        sub = search[7:]

        sub = sub.upper()

        if sub[0] != u'"':

            sub = u'"' + sub

        if sub[-1] != u'"':

            sub = sub + u'"'

        search = u'author:' + sub

    results = get_results_with_context(field, search, content_list)

    all_segments = Segment.objects.filter(element_id__in=[e['element_id'] for e in results])

    all_projects = Project.objects.filter(ldt_id__in=[e['project_id'] for e in results], state=2)

    all_contents = Content.objects.filter(iri_id__in=[e['iri_id'] for e in results])

    viewable_projects_id = [p.ldt_id for p in all_projects]

    complete_results = []           

    results.sort(key=lambda k: k['iri_id'])

    for iri_id, item in groupby(results, itemgetter('iri_id')):

        content = filter(lambda e: e.iri_id == iri_id, all_contents)[0]

        if content.description is None:

            content.description = ''

        all_related_segments = list(item)

        valid_segments = []

        for s in all_related_segments:

            segment.score = s['score']

            segment.indexation_id = s['indexation_id']

            segment.context = s['context']

            segment.context_tags = s['tags']

            if not s['project_id']:

                segment.project_id = '_'

                valid_segments.append(segment)

            elif s['project_id'] in viewable_projects_id:

                valid_segments.append(segment)

        # If all segments found belong to unpublished projects or projects

        # the current user is not allowed to see

        if not valid_segments:

            continue

        score = sum([seg.score for seg in valid_segments])

        complete_results.append({

                                 'list': valid_segments,

                                 'score': score,

                                 'content': content,                                         

                                 })                

    complete_results.sort(key=lambda k: k['score'])

    paginator = Paginator (complete_results, settings.LDT_RESULTS_PER_PAGE)

    try:

        results = paginator.page(page)

    except (EmptyPage, InvalidPage):

        results = paginator.page(paginator.num_pages)

    results.object_list = highlight_documents(results.object_list, search, field)

    return results, len(complete_results)

def loading(request): 

    return render_to_response('ldt/ldt_utils/loading.html', context_instance=RequestContext(request))