# -*- coding: utf-8 -*-

'''

Created on Aug 27, 2013

@author: tc

'''

from django.conf import settings

from django.utils.decorators import method_decorator

from django.views.generic import ListView, DetailView

from p4l.forms import RecordFilterForm

from p4l.models import Record

from p4l.utils import get_labels_for_uris

import json

import logging

logger = logging.getLogger(__name__)

class RecordListView(ListView):

    queryset = Record.objects.select_related("language").prefetch_related('titles').distinct()  # @UndefinedVariable

    paginate_by = settings.NB_RECORDS_BY_PAGE

    template_name = "p4l/p4l_home.html"

    form_class = RecordFilterForm

    def get_context_data(self, **kwargs):

        context = ListView.get_context_data(self, **kwargs)

        context['filter_form'] = self.form_class()

        # Add filter params from GET params

        filter_params = {}

        if 'title' in self.request.GET:

            filter_params['title'] = self.request.GET['title']

        context['filter_params'] = filter_params

        return context

    def get_queryset(self):

        qs = super(RecordListView, self).get_queryset()

        filter_form = self.form_class(self.request.GET)

        if filter_form.is_valid():

            return filter_form.get_filter_qs(qs)

        else:

            return qs

class RecordDetailView(DetailView):

    model = Record

    template_name = "p4l/p4l_record_view.html"

    slug_field = "identifier"

    def get_context_data(self, **kwargs):

        context = DetailView.get_context_data(self, **kwargs)

        # We get the language, "fr" by default

        lang = "fr"

        if "lang" in self.request.GET:

            lang = self.request.GET["lang"]

        elif hasattr(self.request, "LANGUAGE_CODE") and self.request.LANGUAGE_CODE in ["fr","en","es"]:

            lang = self.request.LANGUAGE_CODE

        # self.object is the record entry

        # We get the subjects'labels with the Thesaurus repository

        uri_list = [s.uri for s in self.object.subjects.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://skos.um.es/unescothes/CS000", lang, False)

        context['subjects_labels'] = uris_labels

        # We get the themes'labels with the Themes repository

        uri_list = [s.uri for s in self.object.themes.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Themes", lang, False)

        context['themes_labels'] = uris_labels

        # We get the countries'labels with the Thesaurus repository

        uri_list = [s.uri for s in self.object.countries.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://skos.um.es/unescothes/CS000/Countries", lang, False)

        context['countries_labels'] = uris_labels

        # We get the languages'labels with the Languages repository

        if self.object.language:

            uri_list = [self.object.language.uri]

            uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Languages", lang, False)

            context['language_label'] = uris_labels[self.object.language.uri]

        # We get the other languages'labels with the Languages repository

        uri_list = [s.uri for s in self.object.otherLanguages.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Languages", lang, False)

        context['otherLanguages_labels'] = uris_labels

        # We get the project'labels with the Projects repository

        uri_list = [s.uri for s in self.object.projectNames.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Projects", None, True)

        context['projects_labels'] = uris_labels

        # We get the subjectCorporateBodies'labels with the Organizations repository

        uri_list = [s.uri for s in self.object.subjectCorporateBodies.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Organizations", None, True)

        context['subjectCorporateBodies_labels'] = uris_labels

        # We get the corporateAuthors'labels with the Organizations repository

        uri_list = [s.uri for s in self.object.corporateAuthors.all()]

        uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/Organizations", None, True)

        context['corporateAuthors_labels'] = uris_labels

        # We get the recordType'labels with the DocumentType repository

        if self.object.recordType:

            uri_list = [self.object.recordType]

            uris_labels = get_labels_for_uris(uri_list, "http://www.iiep.unesco.org/plan4learning/scheme/DocumentType", lang, False)

            context['recordType_label'] = uris_labels[self.object.recordType]

        return context

class RecordEditView(DetailView):

    http_method_names = ['get']

    template_name = 'p4l/record_update_form.html'

    model = Record

    slug_field = "identifier"

    def get_context_data(self, **kwargs):

        context = DetailView.get_context_data(self, **kwargs)

        # We get the language, "fr" by default

        lang = "fr"

        if "lang" in self.request.GET:

            lang = self.request.GET["lang"]

        elif hasattr(self.request, "LANGUAGE_CODE") and self.request.LANGUAGE_CODE in ["fr","en","es"]:

            lang = self.request.LANGUAGE_CODE

        uri_labels = get_labels_for_uris([s.uri for s in self.object.subjects.all()], "http://skos.um.es/unescothes/CS000", lang, False)

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.themes.all()], "http://www.iiep.unesco.org/plan4learning/scheme/Themes", lang, False))

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.countries.all()], "http://skos.um.es/unescothes/CS000/Countries", lang, False))

        uri_labels.update(get_labels_for_uris([self.object.language.uri] if self.object.language else [], "http://www.iiep.unesco.org/plan4learning/scheme/Languages", lang, False))

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.otherLanguages.all()], "http://www.iiep.unesco.org/plan4learning/scheme/Languages", lang, False))

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.projectNames.all()], "http://www.iiep.unesco.org/plan4learning/scheme/Projects", None, True))

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.subjectCorporateBodies.all()], "http://www.iiep.unesco.org/plan4learning/scheme/Organizations", None, True))

        uri_labels.update(get_labels_for_uris([s.uri for s in self.object.corporateAuthors.all()], "http://www.iiep.unesco.org/plan4learning/scheme/Organizations", None, True))

        uri_labels.update(get_labels_for_uris([self.object.recordType] if self.object.recordType else [], "http://www.iiep.unesco.org/plan4learning/scheme/DocumentType", lang, False))

        context['uri_labels'] = json.dumps(uri_labels)

        context['subjects_query_dict'] = json.dumps({

                            'data-url': settings.SPARQL_QUERY_ENDPOINT,

                            'data-query':  

"""

PREFIX skos:<http://www.w3.org/2004/02/skos/core#>

PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>

PREFIX owl:<http://www.w3.org/2002/07/owl#>

PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>

SELECT DISTINCT ?uri ?label

WHERE {

    ?uri a skos:Concept.

    ?uri skos:inScheme <http://skos.um.es/unescothes/CS000> .

    ?uri skos:prefLabel ?label.

    FILTER (lang(?label) = ?language).

    ?uri skos:prefLabel ?lab.

    FILTER regex (str(?lab), ?reg, 'i').

    FILTER (lang (?lab) = ?language).

    BIND (STRLEN(STRBEFORE (str(?lab), ?reg)) AS ?place).

    BIND (STRLEN(STR(?lab)) AS ?len)

}

ORDER BY ?place ?len ?lab

""",

                            'data-root-query':

"""

PREFIX skos:<http://www.w3.org/2004/02/skos/core#>

PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>

PREFIX owl:<http://www.w3.org/2002/07/owl#>

PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>

SELECT DISTINCT ?uri ?label

WHERE {

    ?uri a skos:Collection ;

    skos:inScheme <http://skos.um.es/unescothes/CS000> ;    

    FILTER (lang(?label) = ?language). 

    FILTER NOT EXISTS { [skos:member ?uri] }

}

""",

                            'data-childs-query':

"""

PREFIX skos:<http://www.w3.org/2004/02/skos/core#>

PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>

PREFIX owl:<http://www.w3.org/2002/07/owl#>

PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>

SELECT DISTINCT ?uri ?label

WHERE {

  ?uri skos:inScheme <http://skos.um.es/unescothes/CS000> .

  { ?uri a ?type

    FILTER (?type = skos:Collection || ?type = skos:Concept) }.

  ?root skos:narrower|skos:member ?uri.

  ?uri skos:prefLabel|rdfs:label ?label.

  FILTER (lang(?label) = ?language).

}

""",

                            'data-child-count-query':

"""

PREFIX skos:<http://www.w3.org/2004/02/skos/core#>

PREFIX rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>

PREFIX owl:<http://www.w3.org/2002/07/owl#>

PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>

SELECT (COUNT(?uri) as ?nb)

WHERE {

    ?uri skos:inScheme <http://skos.um.es/unescothes/CS000> .

    ?root skos:narrower|skos:member ?uri.

}

"""

                            })

        return context