313 lines
14 KiB
Python
313 lines
14 KiB
Python
from django.db.models import Q, Prefetch
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from django.utils.safestring import mark_safe
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from django.utils.html import escape
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from django.utils.timezone import localtime, now
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from django.core.cache import cache
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from django.urls import reverse
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from django.template.loader import get_template
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from django.conf import settings
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from datetime import datetime, timedelta
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from copy import deepcopy
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from collections import OrderedDict, namedtuple
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from itertools import islice
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from zlib import adler32
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import xml.etree.ElementTree as ET
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from icalendar import Calendar as iCalendar, Event as iEvent
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from .models import Conference, Talk, Room, Tag
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Event = namedtuple('Event', ['talk', 'row', 'rowcount'])
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class Program:
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def __init__(self, site, pending=False, cache=None, staff=False):
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self.site = site
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self.pending = pending
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if cache is None:
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self.cache = not settings.DEBUG
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else:
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self.cache = cache
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self.staff = staff
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self.initialized = False
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def _lazy_init(self):
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self.conference = Conference.objects.get(site=self.site)
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self.talks = Talk.objects.\
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exclude(category__label__exact='').\
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exclude(confirmed=False).\
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filter(site=self.site, room__isnull=False, start_date__isnull=False).\
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filter(Q(duration__gt=0) | Q(category__duration__gt=0)).\
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prefetch_related(
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Prefetch('tags', queryset=Tag.objects.filter(staff=True), to_attr='staff_tags'),
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Prefetch('tags', queryset=Tag.objects.filter(public=True), to_attr='public_tags'),
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'category', 'speakers', 'track', 'tags', 'room',
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)
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if self.pending:
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self.talks = self.talks.exclude(accepted=False)
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else:
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self.talks = self.talks.filter(accepted=True)
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self.talks = self.talks.order_by('start_date')
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self.rooms = Room.objects.filter(talk__in=self.talks.all()).order_by('name').distinct()
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self.days = {}
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for talk in self.talks.all():
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duration = talk.estimated_duration
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assert(duration)
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dt1 = talk.start_date
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d1 = localtime(dt1).date()
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if d1 not in self.days.keys():
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self.days[d1] = {'timeslots': []}
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dt2 = dt1 + timedelta(minutes=duration)
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d2 = localtime(dt2).date()
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if d2 not in self.days.keys():
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self.days[d2] = {'timeslots': []}
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if dt1 not in self.days[d1]['timeslots']:
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self.days[d1]['timeslots'].append(dt1)
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if dt2 not in self.days[d2]['timeslots']:
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self.days[d2]['timeslots'].append(dt2)
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self.cols = OrderedDict([(room, 1) for room in self.rooms])
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for day in self.days.keys():
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self.days[day]['timeslots'] = sorted(self.days[day]['timeslots'])
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self.days[day]['rows'] = OrderedDict([(timeslot, OrderedDict([(room, []) for room in self.rooms])) for timeslot in self.days[day]['timeslots'][:-1]])
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for talk in self.talks.exclude(plenary=True).all():
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self._add_talk(talk)
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for talk in self.talks.filter(plenary=True).all():
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self._add_talk(talk)
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self.initialized = True
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def _add_talk(self, talk):
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room = talk.room
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dt1 = talk.start_date
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d1 = localtime(dt1).date()
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dt2 = talk.start_date + timedelta(minutes=talk.estimated_duration)
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d2 = localtime(dt2).date()
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assert(d1 == d2) # this is a current limitation
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dt1 = self.days[d1]['timeslots'].index(dt1)
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dt2 = self.days[d1]['timeslots'].index(dt2)
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col = None
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for row, timeslot in enumerate(islice(self.days[d1]['timeslots'], dt1, dt2)):
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if col is None:
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col = 0
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while col < len(self.days[d1]['rows'][timeslot][room]) and self.days[d1]['rows'][timeslot][room][col]:
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col += 1
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self.cols[room] = max(self.cols[room], col+1)
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event = Event(talk=talk, row=row, rowcount=dt2-dt1)
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while len(self.days[d1]['rows'][timeslot][room]) <= col:
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self.days[d1]['rows'][timeslot][room].append(None)
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self.days[d1]['rows'][timeslot][room][col] = event
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def _html_header(self):
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output = '<td>Room</td>'
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room_cell = '<td%(options)s>%(name)s<br><b>%(label)s</b></td>'
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for room, colspan in self.cols.items():
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options = ' style="min-width: 100px;" colspan="%d"' % colspan
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output += room_cell % {'name': escape(room.name), 'label': escape(room.label), 'options': options}
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return '<tr>%s</tr>' % output
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def _html_body(self):
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output = ''
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for day in sorted(self.days.keys()):
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output += self._html_day_header(day)
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output += self._html_day(day)
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return output
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def _html_day_header(self, day):
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row = '<tr><td colspan="%(colcount)s"><h3>%(day)s</h3></td></tr>'
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colcount = 1
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for room, col in self.cols.items():
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colcount += col
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return row % {
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'colcount': colcount,
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'day': datetime.strftime(day, '%A %d %B'),
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}
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def _html_day(self, day):
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output = []
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rows = self.days[day]['rows']
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for ts, rooms in rows.items():
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output.append(self._html_row(day, ts, rooms))
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return '\n'.join(output)
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def _html_row(self, day, ts, rooms):
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row = '<tr style="%(style)s">%(timeslot)s%(content)s</tr>'
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cell = '<td%(options)s>%(content)s</td>'
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content = ''
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for room, events in rooms.items():
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colspan = 1
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for i in range(self.cols[room]):
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options = ' colspan="%d"' % colspan
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cellcontent = ''
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if i < len(events) and events[i]:
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event = events[i]
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if event.row != 0:
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continue
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options = ' rowspan="%d" bgcolor="%s"' % (event.rowcount, event.talk.category.color)
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cellcontent = escape(str(event.talk)) + '<br><em>' + escape(event.talk.get_speakers_str()) + '</em>'
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if self.staff:
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tags = event.talk.staff_tags
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else:
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tags = event.talk.public_tags
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for tag in tags:
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cellcontent += '<br>' + tag.label
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elif (i+1 > len(events) or not events[i+1]) and i+1 < self.cols[room]:
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colspan += 1
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continue
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colspan = 1
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content += cell % {'options': options, 'content': mark_safe(cellcontent)}
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style, timeslot = self._html_timeslot(day, ts)
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return row % {
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'style': style,
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'timeslot': timeslot,
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'content': content,
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}
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def _html_timeslot(self, day, ts):
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template = '<td>%(content)s</td>'
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start = ts
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end = self.days[day]['timeslots'][self.days[day]['timeslots'].index(ts)+1]
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duration = (end - start).seconds / 60
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date_to_string = lambda date: datetime.strftime(localtime(date), '%H:%M')
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style = 'height: %dpx;' % int(duration * 1.2)
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timeslot = '<td>%s – %s</td>' % tuple(map(date_to_string, [start, end]))
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return style, timeslot
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def _as_html(self):
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template = """<table class="table table-bordered text-center">\n%(header)s\n%(body)s\n</table>"""
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if not self.initialized:
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self._lazy_init()
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return template % {
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'header': self._html_header(),
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'body': self._html_body(),
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}
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def _as_xml(self):
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if not self.initialized:
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self._lazy_init()
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schedule = ET.Element('schedule')
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conference = ET.SubElement(schedule, 'conference')
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elt = ET.SubElement(conference, 'title')
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elt.text = self.conference.name
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elt = ET.SubElement(conference, 'venue')
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elt.text = ', '.join(map(lambda x: x.strip(), self.conference.venue.split('\n')))
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elt = ET.SubElement(conference, 'city')
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elt.text = self.conference.city
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if self.days:
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elt = ET.SubElement(conference, 'start_date')
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elt.text = sorted(self.days.keys())[0].strftime('%Y-%m-%d')
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elt = ET.SubElement(conference, 'end_date')
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elt.text = sorted(self.days.keys(), reverse=True)[0].strftime('%Y-%m-%d')
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elt = ET.SubElement(conference, 'days_count')
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elt.text = str(len(self.days))
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for index, day in enumerate(sorted(self.days.keys())):
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day_elt = ET.SubElement(schedule, 'day', index=str(index+1), date=day.strftime('%Y-%m-%d'))
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for room in self.rooms.all():
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room_elt = ET.SubElement(day_elt, 'room', name=room.name)
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for talk in self.talks.filter(room=room).order_by('start_date'):
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if localtime(talk.start_date).date() != day:
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continue
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talk_elt = ET.SubElement(day_elt, 'event', id=str(talk.id))
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duration = talk.estimated_duration
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persons_elt = ET.SubElement(talk_elt, 'persons')
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for speaker in talk.speakers.all():
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person_elt = ET.SubElement(talk_elt, 'person', id=str(speaker.id))
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person_elt.text = str(speaker)
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# #if talk.registration_required and self.conference.subscriptions_open:
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# # links += mark_safe("""
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# # <link tag="registration">%(link)s</link>""" % {
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# # 'link': reverse('register-for-a-talk', args=[talk.slug]),
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# # })
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# # registration = """
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# # <attendees_max>%(max)s</attendees_max>
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# # <attendees_remain>%(remain)s</attendees_remain>""" % {
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# # 'max': talk.attendees_limit,
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# # 'remain': talk.remaining_attendees or 0,
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# # }
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tags_elt = ET.SubElement(talk_elt, 'tags')
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for tag in talk.tags.filter(public=True):
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tag_elt = ET.SubElement(tags_elt, 'tag', slug=str(tag.slug))
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tag_elt.text = tag.name
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elt = ET.SubElement(talk_elt, 'start')
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elt.text = localtime(talk.start_date).strftime('%H:%M')
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elt = ET.SubElement(talk_elt, 'duration')
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elt.text = '%02d:%02d' % (talk.estimated_duration / 60, talk.estimated_duration % 60)
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elt = ET.SubElement(talk_elt, 'room')
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elt.text = room.name
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elt = ET.SubElement(talk_elt, 'slug')
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elt.text = talk.slug
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elt = ET.SubElement(talk_elt, 'title')
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elt.text = talk.title
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elt = ET.SubElement(talk_elt, 'subtitle')
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elt = ET.SubElement(talk_elt, 'track')
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elt.text = str(talk.track) if talk.track else ''
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elt = ET.SubElement(talk_elt, 'type')
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elt.text = talk.category.label
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elt = ET.SubElement(talk_elt, 'language')
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elt = ET.SubElement(talk_elt, 'description')
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elt.text = talk.description
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links_elt = ET.SubElement(talk_elt, 'links')
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if talk.materials:
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elt = ET.SubElement(links_elt, 'link', tag='slides')
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elt.text = talk.materials.url
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if talk.video and self.conference.videos_available:
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elt = ET.SubElement(links_elt, 'link', tag='video')
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elt.text = talk.video
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return ET.tostring(schedule)
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def _as_ics(self, citymeo=False):
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if not self.initialized:
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self._lazy_init()
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cal = iCalendar()
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cal.add('prodid', '-//PonyConf.io//PonyConf//FR')
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cal.add('version', '2.0')
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cal.add('x-wr-calname', self.conference.name)
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cal.add('x-wr-timezone', settings.TIME_ZONE)
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cal.add('calscale', 'GREGORIAN')
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talks = self.talks
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if citymeo and talks.exists():
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talks = talks.filter(start_date__gte=now()-timedelta(minutes=5))
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if talks.exists():
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limit = talks.first().start_date.replace(hour=23, minute=59, second=59)
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talks = talks.filter(start_date__lte=limit)
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for talk in talks:
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event = iEvent()
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event.add('dtstart', talk.start_date)
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if not talk.end_date:
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continue
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event.add('dtend', talk.end_date)
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event.add('dtstamp', talk.updated)
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event.add('summary', talk.title)
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if talk.room:
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event.add('location', talk.room)
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event.add('status', 'CONFIRMED' if talk.accepted else 'TENTATIVE')
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if not citymeo:
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event.add('description', talk.description)
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event.add('uid', '%s/%s' % (self.site.domain, talk.id))
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cal.add_component(event)
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return cal.to_ical()
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def render(self, output='html', **kwargs):
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if self.cache:
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cache_entry = 'ponyconf-%d' % adler32('|'.join(map(str, [self.site.domain, output, self.pending] + list(kwargs.values()))).encode('utf-8'))
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result = cache.get(cache_entry)
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if not result:
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result = getattr(self, '_as_%s' % output)(**kwargs)
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cache.set(cache_entry, result, 3 * 60 * 60) # 3H
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return result
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else:
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return getattr(self, '_as_%s' % output)(**kwargs)
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def __str__(self):
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return self.render()
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