"""Specific views for users and groups

:organization: Logilab
:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"

from logilab.mtconverter import xml_escape

from cubicweb.selectors import one_line_rset, implements, match_user_groups
from cubicweb.view import EntityView
from cubicweb.web import action, uicfg

_pvs = uicfg.primaryview_section
_pvs.tag_attribute(('CWUser', 'login'), 'hidden')
_pvs.tag_attribute(('CWGroup', 'name'), 'hidden')
_pvs.tag_subject_of(('CWGroup', 'read_permission', '*'), 'relations')
_pvs.tag_subject_of(('CWGroup', 'add_permission', '*'), 'relations')
_pvs.tag_subject_of(('CWGroup', 'delete_permission', '*'), 'relations')
_pvs.tag_subject_of(('CWGroup', 'update_permission', '*'), 'relations')
_pvs.tag_object_of(('*', 'in_group', 'CWGroup'), 'relations')
_pvs.tag_object_of(('*', 'require_group', 'CWGroup'), 'relations')

class UserPreferencesEntityAction(action.Action):
    __regid__ = 'prefs'
    __select__ = (one_line_rset() & implements('CWUser') &
                  match_user_groups('owners', 'managers'))

    title = _('preferences')
    category = 'mainactions'

    def url(self):
        login = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0).login
        return self._cw.build_url('cwuser/%s'%login, vid='propertiesform')


class FoafView(EntityView):
    __regid__ = 'foaf'
    __select__ = implements('CWUser')

    title = _('foaf')
    templatable = False
    content_type = 'text/xml'

    def call(self):
        self.w(u'''<?xml version="1.0" encoding="%s"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:rdfs="http://www.w3org/2000/01/rdf-schema#"
         xmlns:foaf="http://xmlns.com/foaf/0.1/"> '''% self._cw.encoding)
        for i in xrange(self.cw_rset.rowcount):
            self.cell_call(i, 0)
        self.w(u'</rdf:RDF>\n')

    def cell_call(self, row, col):
        entity = self.cw_rset.complete_entity(row, col)
        self.w(u'''<foaf:PersonalProfileDocument rdf:about="">
                      <foaf:maker rdf:resource="%s"/>
                      <foaf:primaryTopic rdf:resource="%s"/>
                   </foaf:PersonalProfileDocument>''' % (entity.absolute_url(), entity.absolute_url()))
        self.w(u'<foaf:Person rdf:ID="%s">\n' % entity.eid)
        self.w(u'<foaf:name>%s</foaf:name>\n' % xml_escape(entity.dc_long_title()))
        if entity.surname:
            self.w(u'<foaf:family_name>%s</foaf:family_name>\n'
                   % xml_escape(entity.surname))
        if entity.firstname:
            self.w(u'<foaf:givenname>%s</foaf:givenname>\n'
                   % xml_escape(entity.firstname))
        emailaddr = entity.get_email()
        if emailaddr:
            self.w(u'<foaf:mbox>%s</foaf:mbox>\n' % xml_escape(emailaddr))
        self.w(u'</foaf:Person>\n')


# group views ##################################################################

_pvs.tag_object_of(('CWUser', 'in_group', 'CWGroup'), 'hidden')
_pvs.tag_object_of(('*', 'require_group', 'CWGroup'), 'hidden')


class CWGroupPrimaryView(tabs.TabbedPrimaryView):
    __select__ = implements('CWGroup')
    tabs = [_('cwgroup-main'), _('cwgroup-permissions')]
    default_tab = 'cwgroup-main'


class CWGroupMainTab(tabs.PrimaryTab):
    __regid__ = 'cwgroup-main'
    __select__ = tabs.PrimaryTab.__select__ & implements('CWGroup')

    def render_entity_attributes(self, entity, siderelations=None):
        rql = 'Any U, FN, LN, CD, LL ORDERBY L WHERE U in_group G, ' \
              'U login L, U firstname FN, U surname LN, U creation_date CD, ' \
              'U last_login_time LL, G eid %(x)s'
        rset = self._cw.execute(rql, {'x': entity.eid})
        headers = (_(u'user'), _(u'first name'), _(u'last name'),
                   _(u'creation date'), _(u'last login time'))
        self.wview('editable-table', rset, 'null', displayfilter=True,
                   displaycols=range(5), mainindex=0, headers=headers)

class CWGroupPermTab(EntityView):
    __regid__ = 'cwgroup-permissions'
    __select__ = implements('CWGroup')

    def cell_call(self, row, col):
        self._cw.add_css(('cubicweb.schema.css','cubicweb.acl.css'))
        access_types = ('read', 'delete', 'add', 'update')
        w = self.w
        entity = self.cw_rset.get_entity(row, col)
        objtype_access = {'CWEType': ('read', 'delete', 'add', 'update'),
                          'CWRelation': ('add', 'delete')}
        rql_cwetype = 'DISTINCT Any X WHERE X %s_permission CWG, X is CWEType, ' \
                      'CWG eid %%(e)s'
        rql_cwrelation = 'DISTINCT Any RT WHERE X %s_permission CWG, X is CWRelation, ' \
                         'X relation_type RT, CWG eid %%(e)s'
        self.render_objtype_access(entity, 'CWEType', objtype_access, rql_cwetype)
        self.render_objtype_access(entity, 'CWRelation', objtype_access, rql_cwrelation)

    def render_objtype_access(self, entity, objtype, objtype_access, rql):
        self.w(u'<h4>%s</h4>' % self._cw._(objtype))
        for access_type in objtype_access[objtype]:
            rset = self._cw.execute(rql % access_type, {'e': entity.eid})
            if rset:
                self.w(u'<div>Can %s:</div>' % access_type)
                self.w(u'<div>%s</div><br/>' % self.view('csv', rset, 'null'))

class CWGroupInContextView(EntityView):
    __regid__ = 'incontext'
    __select__ = implements('CWGroup')

    def cell_call(self, row, col):
        entity = self.cw_rset.complete_entity(row, col)
        self.w(u'<a href="%s" class="%s">%s</a>' % (
            entity.absolute_url(), entity.name, entity.printable_value('name')))