#from pylons import request, response, session, url, tmpl_context as c
#from pylons.controllers.util import abort, redirect
import datetime
from flask import request, abort, url_for
import paginate
import sqlalchemy as sa

import wrpylib.wrmwmarkup
import wrpylib.wrmwcache
import wrpylib.mwmarkup

import wradmin.model as model
from wradmin.genshi import render_genshi_template, TemplateContext


# class RequireDateIfUserDefined(formencode.validators.FormValidator):
#     "requires that date_userdefined is not empty if date_invalid == 'userdefined'"
#     def _to_python(self, value_dict, state):
#         # if not value_dict.get('date_invalid'): ... # This is _not_ checked because this should be checked elsewhere
#         if value_dict.get('date_invalid') == 'userdefined' and not value_dict.get('date_userdefined'):
#             value = value_dict.get('date_userdefined')
#             raise formencode.Invalid('Es muss ein Wert eingegeben werden', value, state, error_dict={'date_userdefined': formencode.Invalid(self.message('empty', state), value, state)})
#         return value_dict
#
#
# class ChangeDateInvalidForm(formencode.Schema):
#     allow_extra_fields = True
#     filter_extra_fields = True
#     date_invalid = formencode.validators.OneOf(['no_change', 'tomorrow', 'one_week', 'two_weeks', 'one_week_more', 'end_of_saison', 'now', 'userdefined'], not_empty=True)
#     date_userdefined = wrpylib.wrvalidators.DateTimeNoSec
#     chained_validators = [RequireDateIfUserDefined()]


class BerichtController:

    def _add_dates_to_c(self, c, date_invalid):
        now = datetime.datetime.today()
        if date_invalid is None: date_invalid = now
        c.date_now = now
        c.date_no_change = date_invalid
        c.date_tomorrow = now + datetime.timedelta(1)
        c.date_one_week = now + datetime.timedelta(7)
        c.date_two_weeks = now + datetime.timedelta(14)
        c.date_one_week_more = date_invalid + datetime.timedelta(7)
        c.date_end_of_saison = datetime.datetime(now.year if now.month < 7 else now.year + 1, 7, 1)

    def list(self):
        """Lists all reports"""
        q = model.meta.Session.query(model.WrReport)
        q = q.order_by(sa.sql.expression.desc(model.WrReport.id))
        c = TemplateContext()
        c.paginator = paginate.Page(q.all(), page=int(request.args.get('page', 1)),
                                    url_maker=lambda page: url_for('bericht_list', page=page),
                                    items_per_page=25)
        return render_genshi_template('bericht_list.html', c=c)

    def view(self, id):
        """Displays a report"""
        q = model.meta.Session.query(model.WrReport)
        c = TemplateContext()
        c.wrreport =  q.get(id)
        if c.wrreport is None:
            abort(404)
        self._add_dates_to_c(c, c.wrreport.date_invalid)
        return render_genshi_template('bericht_view.html', c=c)

    #@restrict('POST')
    #@validate(schema=ChangeDateInvalidForm(), form='view')
    def change_date_invalid(self, id=None):
        if id is None: abort(404)
        wrreport_q = model.meta.Session.query(model.WrReport)
        wrreport =  wrreport_q.get(id)
        if wrreport is None: abort(404)
        self._add_dates_to_c(c, wrreport.date_invalid)
        date = self.form_result['date_invalid']
        if   date == 'tomorrow':      wrreport.date_invalid = c.date_tomorrow
        elif date == 'one_week':      wrreport.date_invalid = c.date_one_week
        elif date == 'two_weeks':     wrreport.date_invalid = c.date_two_weeks
        elif date == 'one_week_more': wrreport.date_invalid = c.date_one_week_more
        elif date == 'end_of_saison': wrreport.date_invalid = c.date_end_of_saison
        elif date == 'now':           wrreport.date_invalid = c.date_now
        elif date == 'userdefined':   wrreport.date_invalid = self.form_result['date_userdefined']
        model.meta.Session.commit()
        session['flash'] = 'Datum wurde erfolgreich geändert'
        session.save()
        return redirect(url(controller='bericht', action='view', id=id))