# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr

#

# This file is part of CubicWeb.

#

# CubicWeb is free software: you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# CubicWeb is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

"""Specific views for entities implementing IGeocodable

"""

__docformat__ = "restructuredtext en"

from cubicweb.interfaces import IGeocodable

from cubicweb.view import EntityView

from cubicweb.selectors import implements

from cubicweb.web import json

class GeocodingJsonView(EntityView):

    __regid__ = 'geocoding-json'

    __select__ = implements(IGeocodable)

    binary = True

    templatable = False

    content_type = 'application/json'

    def call(self):

        # remove entities that don't define latitude and longitude

        self.cw_rset = self.cw_rset.filtered_rset(lambda e: e.latitude and e.longitude)

        zoomlevel = self._cw.form.pop('zoomlevel', 8)

        extraparams = self._cw.form.copy()

        extraparams.pop('vid', None)

        extraparams.pop('rql', None)

        markers = [self.build_marker_data(rowidx, extraparams)

                   for rowidx in xrange(len(self.cw_rset))]

        center = {

            'latitude': sum(marker['latitude'] for marker in markers) / len(markers),

            'longitude': sum(marker['longitude'] for marker in markers) / len(markers),

            }

        geodata = {

            'zoomlevel': int(zoomlevel),

            'center': center,

            'markers': markers,

            }

        self.w(json.dumps(geodata))

    def build_marker_data(self, row, extraparams):

        entity = self.cw_rset.get_entity(row, 0)

        icon = None

        if hasattr(entity, 'marker_icon'):

            icon = entity.marker_icon()

        else:

            icon = (self._cw.external_resource('GMARKER_ICON'), (20, 34), (4, 34), None)

        return {'latitude': entity.latitude, 'longitude': entity.longitude,

                'title': entity.dc_long_title(),

                #icon defines : (icon._url, icon.size,  icon.iconAncho', icon.shadow)

                'icon': icon,

                'bubbleUrl': entity.absolute_url(vid='gmap-bubble', __notemplate=1, **extraparams),

                }

class GoogleMapBubbleView(EntityView):

    __regid__ = 'gmap-bubble'

    __select__ = implements(IGeocodable)

    def cell_call(self, row, col):

        entity = self.cw_rset.get_entity(row, col)

        self.w(u'<div>%s</div>' % entity.view('oneline'))

        # FIXME: we should call something like address-view if available

class GoogleMapsView(EntityView):

    __regid__ = 'gmap-view'

    __select__ = implements(IGeocodable)

    paginable = False

    def call(self, gmap_key, width=400, height=400, uselabel=True, urlparams=None):

        self._cw.demote_to_html()

        # remove entities that don't define latitude and longitude

        self.cw_rset = self.cw_rset.filtered_rset(lambda e: e.latitude and e.longitude)

        self._cw.add_js('http://maps.google.com/maps?sensor=false&file=api&v=2&key=%s' % gmap_key,

                        localfile=False)

        self._cw.add_js( ('cubicweb.widgets.js', 'cubicweb.gmap.js', 'gmap.utility.labeledmarker.js') )

        rql = self.cw_rset.printable_rql()

        if urlparams is None:

            loadurl = self._cw.build_url(rql=rql, vid='geocoding-json')

        else:

            loadurl = self._cw.build_url(rql=rql, vid='geocoding-json', **urlparams)

        self.w(u'<div style="width: %spx; height: %spx;" class="widget gmap" '

               u'cubicweb:wdgtype="GMapWidget" cubicweb:loadtype="auto" '

               u'cubicweb:loadurl="%s" cubicweb:uselabel="%s"> </div>' % (width, height, loadurl, uselabel))

class GoogeMapsLegend(EntityView):

    __regid__ = 'gmap-legend'

    def call(self):

        self.w(u'<ol>')

        for rowidx in xrange(len(self.cw_rset)):

            self.w(u'<li>')

            self.wview('listitem', self.cw_rset, row=rowidx, col=0)

            self.w(u'</li>')

        self.w(u'</ol>')