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

#

# Copyright IRI (c) 2013

#

# contact@iri.centrepompidou.fr

#

# This software is governed by the CeCILL-B license under French law and

# abiding by the rules of distribution of free software.  You can  use, 

# modify and/ or redistribute the software under the terms of the CeCILL-B

# license as circulated by CEA, CNRS and INRIA at the following URL

# "http://www.cecill.info". 

#

# As a counterpart to the access to the source code and  rights to copy,

# modify and redistribute granted by the license, users are provided only

# with a limited warranty  and the software's author,  the holder of the

# economic rights,  and the successive licensors  have only  limited

# liability. 

#

# In this respect, the user's attention is drawn to the risks associated

# with loading,  using,  modifying and/or developing or reproducing the

# software by the user in light of its specific status of free software,

# that may mean  that it is complicated to manipulate,  and  that  also

# therefore means  that it is reserved for developers  and  experienced

# professionals having in-depth computer knowledge. Users are therefore

# encouraged to load and test the software's suitability as regards their

# requirements in conditions enabling the security of their systems and/or 

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# same conditions as regards security. 

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# The fact that you are presently reading this means that you have had

# knowledge of the CeCILL-B license and that you accept its terms.

#

from django.conf import settings

from django.core.paginator import InvalidPage

from django.http.response import Http404

from django.template.context import RequestContext

from haystack.query import SearchQuerySet

from haystack.views import SearchView, search_view_factory

from p4l.search.forms import RecordSearchForm

from p4l.utils import P4lPaginator

class RecordSearchView(SearchView):

    def __init__(self, template=None, load_all=True, form_class=None, searchqueryset=None, context_class=RequestContext, results_per_page=None):

        record_searchQuerySet = SearchQuerySet()

        template = "p4l/home.html"

        results_per_page= settings.NB_RECORDS_BY_PAGE

        form_class = RecordSearchForm

        SearchView.__init__(self, template=template, load_all=False, form_class=form_class, searchqueryset=record_searchQuerySet, context_class=context_class, results_per_page=results_per_page)

    @classmethod

    def as_view(cls):

        return search_view_factory(view_class=cls)

    def build_page(self):

        """

        Paginates the results appropriately.

        In case someone does not want to use Django's built-in pagination, it

        should be a simple matter to override this method to do what they would

        like.

        """

        try:

            page_no = int(self.request.GET.get('page', 1))

        except (TypeError, ValueError):

            raise Http404("Not a valid number for page.")

        if page_no < 1:

            raise Http404("Pages should be 1 or greater.")

        start_offset = (page_no - 1) * self.results_per_page

        self.results[start_offset:start_offset + self.results_per_page]

        paginator = P4lPaginator(self.results, self.results_per_page)

        try:

            page = paginator.page(page_no)

        except InvalidPage:

            raise Http404("No such page!")

        return (paginator, page)