diff --git a/smash/web/management/__init__.py b/smash/web/management/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/smash/web/management/commands/__init__.py b/smash/web/management/commands/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/smash/web/management/commands/holidays.py b/smash/web/management/commands/holidays.py
new file mode 100644
index 0000000000000000000000000000000000000000..cfd82b2870bdc2d2b74cc85c53d8cdacdbc22177
--- /dev/null
+++ b/smash/web/management/commands/holidays.py
@@ -0,0 +1,94 @@
+import datetime
+
+from django.core.management.base import BaseCommand
+
+from ...models import Appointment, Location, AppointmentType
+
+appointment_type_other = AppointmentType.objects.filter(code='OTHER').first()
+
+
+def get_easter_monday(easter_sunday):
+ return next_weekday(easter_sunday, 0)
+
+
+def get_ascension_day(easter_sunday):
+ return easter_sunday + datetime.timedelta(days=39)
+
+
+class Command(BaseCommand):
+ help = 'import holidays for the specified years'
+
+ def add_arguments(self, parser):
+ parser.add_argument('year', nargs='+', type=int)
+
+ def handle(self, *args, **options):
+ for location in Location.objects.all():
+ for year in options['year']:
+ self.stdout.write("importing holidays for year {} and location {}".format(year, location))
+ # new years day
+ self.create_holiday(year, 1, 1, "New Years Day", location)
+ # easter monday
+ easter_sunday = get_easter_sunday_date(year)
+ easter_monday = get_easter_monday(easter_sunday)
+ self.create_holiday(year, easter_monday.month, easter_monday.day, "Easter Monday", location)
+ # ascension day
+ ascension_day = get_ascension_day(easter_sunday)
+ self.create_holiday(year, ascension_day.month, ascension_day.day, "Ascension Day", location)
+ # pentecost monday
+ pentecost_day = get_pentecost_day(easter_sunday)
+ self.create_holiday(year, pentecost_day.month, pentecost_day.day, "Pentecost Monday", location)
+ # labour day
+ self.create_holiday(year, 5, 1, "Labour Day", location)
+ # national day
+ self.create_holiday(year, 6, 23, "National Day", location)
+ # assumption day
+ self.create_holiday(year, 8, 15, "Assumption Day", location)
+ # all saints day
+ self.create_holiday(year, 11, 1, "All Saints Day", location)
+ # christmas
+ self.create_holiday(year, 12, 25, "Christmas Day", location)
+ self.create_holiday(year, 12, 26, "St Stephens Day", location)
+
+ def create_holiday(self, year, month, day, comment, location):
+ # check if already exists:
+ count = Appointment.objects.filter(datetime_when__year=year, datetime_when__month=month, datetime_when__day=day,
+ location=location, comment=comment).count()
+ if count != 0:
+ self.stdout.write(
+ 'an holiday with the same description already exists for the same day: {}'.format(comment))
+ return
+ holiday = Appointment()
+ holiday.datetime_when = datetime.datetime(year=year, month=month, day=day, hour=9)
+ holiday.location = location
+ holiday.length = 60 * 8
+ holiday.comment = comment
+ holiday.visit_id = None
+ holiday.save()
+ holiday.appointment_types = [appointment_type_other]
+
+
+def get_easter_sunday_date(year):
+ # source: http://www.officeholidays.com/religious/christian/easter_monday.php
+ c = year // 100
+ n = year - 19 * (year // 19)
+ k = (c - 17) // 25
+ i = c - c // 4 - (c - k) // 3 + 19 * n + 15
+ i = i - 30 * (i // 30)
+ i = i - (i // 28) * (1 - (i // 28) * (29 // (i + 1)) * ((21 - n) // 11))
+ j = year + year // 4 + i + 2 - c + c // 4
+ j = j - 7 * (j // 7)
+ l = i - j
+ month = 3 + (l + 40) // 44
+ day = l + 28 - 31 * (month // 4)
+ return datetime.datetime(year=year, month=month, day=day)
+
+
+def get_pentecost_day(easter_sunday):
+ return easter_sunday + datetime.timedelta(days=50)
+
+
+def next_weekday(day_datetime, week_day):
+ days_ahead = week_day - day_datetime.weekday()
+ if days_ahead <= 0:
+ days_ahead += 7
+ return day_datetime + datetime.timedelta(days_ahead)
diff --git a/smash/web/tests/test_holidays.py b/smash/web/tests/test_holidays.py
new file mode 100644
index 0000000000000000000000000000000000000000..2bcfeac8ede5f9ca2a354dfb1936d2918d4feac8
--- /dev/null
+++ b/smash/web/tests/test_holidays.py
@@ -0,0 +1,39 @@
+from unittest import TestCase
+
+from web.management.commands.holidays import get_easter_sunday_date, get_ascension_day, get_pentecost_day
+
+
+class TestHolidays(TestCase):
+ def test_get_easter_sunday_date(self):
+ easter_sunday = get_easter_sunday_date(2010)
+ self.assertEqual(4, easter_sunday.month)
+ self.assertEqual(4, easter_sunday.day)
+ easter_sunday = get_easter_sunday_date(2017)
+ self.assertEqual(4, easter_sunday.month)
+ self.assertEqual(16, easter_sunday.day)
+
+ def test_get_ascension_day(self):
+ expected_values = [
+ (2018, 5, 10),
+ (2017, 5, 25),
+ (2016, 5, 5),
+ (2015, 5, 14),
+ (2014, 5, 29)
+ ]
+ for year, month, day in expected_values:
+ easter_sunday = get_easter_sunday_date(year)
+ ascension_day = get_ascension_day(easter_sunday)
+ self.assertEqual(month, ascension_day.month)
+ self.assertEqual(day, ascension_day.day)
+
+ def test_get_pentecost_day(self):
+ expected_values = [
+ (2018, 5, 21),
+ (2017, 6, 5),
+ (2016, 5, 16),
+ ]
+ for year, month, day in expected_values:
+ easter_sunday = get_easter_sunday_date(year)
+ pentecost_day = get_pentecost_day(easter_sunday)
+ self.assertEqual(month, pentecost_day.month)
+ self.assertEqual(day, pentecost_day.day)