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

'''

Created on Jan 30, 2012

@author: ymh

'''

from django.conf import settings

from django.core.management.base import NoArgsCommand

from django.core.management.color import no_style

from django.db.models import Count

class Command(NoArgsCommand):

    '''

    query and update wikipedia for tag title.

    '''

    options = ''

    help = """query and update wikipedia for tag title."""

    option_list = NoArgsCommand.option_list + (

        make_option('--all',

            action='store_true',

            dest='all',

            default=False,

            help='force all tags to be updated, not only those not yet processed'),

        make_option('--force',

            action='store_true',

            dest='force',

            default=False,

            help='ask no questions'),

        make_option('--random',

            action='store_true',

            dest='random',

            default=False,

            help='randomize query on tags'),

        make_option('--limit',

            action='store',

            type='int',

            dest='limit',

            default= -1,

            help='number of tag to process'),

        make_option('--start',

            action='store',

            type='int',

            dest='start',

            default=0,

            help='number of tag to ignore'),

        make_option('--tag',

            action='append',

            dest='tags',

            type='string',

            default=[],

            help='the tag to query'),

    )

    def handle_noargs(self, **options):

        self.style = no_style()

        self.interactive = options.get('interactive', True)

        self.verbosity = int(options.get('verbosity', '1'))

        self.force = options.get('force', False)

        self.limit = options.get("limit", -1)

        self.start = options.get("start", 0)

        self.random = options.get('random', False)

        if self.verbosity > 2:

            print "option passed : " + repr(options)

        self.tag_list = options.get("tags", []);

        queryset = Tag.objects.exclude(dbpedia_uri= None)

        if self.tag_list:

            queryset = queryset.filter(label__in=self.tag_list)

        elif not options.get('all',False):            

            queryset = queryset.annotate(dbfc=Count('dbpedia_fields')).filter(dbfc = 0)

        if self.random:

            queryset = queryset.order_by("?")

        else:

            queryset = queryset.order_by("label")

        if self.limit >= 0:

            queryset = queryset[self.start:self.limit]

        elif self.start > 0:

            queryset = queryset[self.start:]

        if self.verbosity > 2 :

            print "Tag Query is %s" % (queryset.query)

        count = queryset.count()

        if count == 0:

            print "No tag to query : exit."

            return

        if not self.force and self.interactive:

            confirm = raw_input("You have requested to query and replace the dbpedia information for %d tags.\n Are you sure you want to do this? \nType 'yes' to continue, or 'no' to cancel: " % (count))

        else:

            confirm = 'yes'

        if confirm != "yes":

            print "dbpedia query cancelled"

            return

        #endpoint = SPARQLWrapper("http://dbpedia.org/sparql", returnFormat=RDF)

        writer = None

        for i,tag in enumerate(queryset):

            writer = show_progress(i+1, count, tag.label, 50, writer)

            db.reset_queries()

            #abstract query

            #"select ?y

            # where {<%s>  <http://dbpedia.org/ontology/abstract> ?y}" % (tag.dbpedia_uri)

            #rdf_uri = re.sub('\/resource\/', "/data/", tag.dbpedia_uri) + ".n3"            

            #g = Graph()

            try :

                abstracts = {}

                labels = {}

                thumbnail = None

                with transaction.commit_on_success():

                    endpoint.setQuery("select distinct ?y where {<%s>  <http://dbpedia.org/ontology/abstract> ?y}" % (tag.dbpedia_uri))

                    for _,_,o in res_abstracts.triples((None, URIRef('http://www.w3.org/2005/sparql-results#value'), None)):

                        abstracts[o.language] = (unicode(o), True)

                    endpoint.setQuery("select distinct ?y where {<%s>  <http://www.w3.org/2000/01/rdf-schema#label> ?y}" % (tag.dbpedia_uri))

                    for _,_,o in res_labels.triples((None, URIRef('http://www.w3.org/2005/sparql-results#value'), None)):

                        labels[o.language] = (unicode(o), True)

                    endpoint.setQuery("select distinct ?y where {<%s>  <http://dbpedia.org/ontology/thumbnail> ?y} limit 1" % (tag.dbpedia_uri))

                    for _,_,o in res_thumbnails.triples((None, URIRef('http://www.w3.org/2005/sparql-results#value'), None)):

                        thumbnail = unicode(o)

                    #endpoint.setQuery('select distinct ?y where { <%s> ?p ?y . FILTER regex(?y, "^http://dbpedia.org/resource")}' % (tag.dbpedia_uri))

                    endpoint.setQuery('select distinct ?y where { <%s> ?p ?y . FILTER regex(?y, "^%s")}' % (tag.dbpedia_uri, settings.DBPEDIA_URI_TEMPLATE % ( 'resource', '' )))

                    for _,_,o in res_links.triples((None, URIRef('http://www.w3.org/2005/sparql-results#value'), None)):

                        tagqs = Tag.objects.filter(dbpedia_uri=unicode(o))

                        if tagqs:

                    ref_label_lang, (ref_label, _) = ('fr',labels['fr']) if 'fr' in labels else ('en',labels['en']) if 'en' in labels else labels.items()[0] if len(labels) > 0 else ('fr',(tag.label, True))

                    ref_abstract_lang, (ref_abstract, _) = ('fr',abstracts['fr']) if 'fr' in abstracts else ('en',abstracts['en']) if 'en' in abstracts else abstracts.items()[0] if len(abstracts) > 0 else ('fr',(None, 'True'))

                    for lang in settings.LANGUAGES:

                        if lang[0] not in labels:

                            labels[lang[0]]= (ref_label, False)

                        if lang[0] not in abstracts:

                            abstracts[lang[0]] = (ref_abstract, False)

                    dbfield , created = DbpediaFields.objects.get_or_create(dbpedia_uri=tag.dbpedia_uri,tag=tag, defaults={'abstract':ref_abstract, 'thumbnail':thumbnail, 'label':ref_label}) #@UndefinedVariable                    

                    if not created:

                        dbfield.abstract = ref_abstract

                        dbfield.thumbnail = thumbnail

                        dbfield.label = ref_label

                        dbfield.save()

                        DbpediaFieldsTranslation.objects.filter(master=dbfield).delete()

                    consolidated_trans = {}

                    for lang,label in labels.iteritems():

                        consolidated_trans[lang] = [label,(ref_abstract, lang==ref_abstract_lang)]

                    for lang,abstract in abstracts.iteritems():

                        if lang in consolidated_trans:

                            consolidated_trans[lang][1] = abstract

                        else:

                            consolidated_trans[lang] = [(ref_label, lang==ref_label_lang), abstract] 

                    for lang, trans in consolidated_trans.iteritems():

                        label, abstract = tuple(trans)

                        DbpediaFieldsTranslation.objects.create(master=dbfield, language_code=lang, label=label[0], is_label_translated=label[1], abstract=abstract[0], is_abstract_translated=abstract[1])

            except Exception as e:

                if tag.dbpedia_uri:

                    print "\nError processing resource %s : %s" %(tag.dbpedia_uri,unicode(e))

                else:

                    print "\nError processing resource %s" % unicode(e)

                traceback.print_exception(type(e), e, sys.exc_info()[2])