1 files changed, 58 insertions, 0 deletions
diff --git a/spgen.py b/spgen.py
new file mode 100755
index 0000000..30b5956
--- /dev/null
+++ b/spgen.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+
+import argparse
+import datetime
+import random
+from string import Template
+import sys
+
+
+class SPTemplate(Template):
+    delimiter = '%%'
+
+
+def print_sp_template(template: SPTemplate, duration: str, names: list[str]):
+    defs = [rf'\csdef{{name{i+1}}}{{{n}}}' for i, n in enumerate(names)]
+    defs.append(rf'\csdef{{duration}}{{{duration}}}')
+    print(template.substitute({'defs': '\n'.join(defs)}))
+
+
+def main():
+    """Entry point generating a random seating plan from students names"""
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('template')
+    duration_group = parser.add_mutually_exclusive_group()
+    duration_group.add_argument(
+        '--duration',
+        default=f'KW: {datetime.datetime.now().isocalendar()[1]}')
+    duration_group.add_argument('--week', type=int)
+    args = parser.parse_args()
+
+    names = [line[:-1] for line in sys.stdin.readlines()]
+    random.shuffle(names)
+
+    duration = args.duration
+    if args.week:
+        # https://stackoverflow.com/questions/56163008/how-to-get-all-dates-of-week-based-on-week-number-in-python
+        # Starts with knowing the day of the week
+        week_day = datetime.datetime.now().isocalendar()[2]
+        week_offset = args.week - datetime.datetime.now().isocalendar()[1]
+
+        # Calculates Starting date (Sunday) for this case by subtracting
+        # current date with time delta of the day of the week
+        start_date = datetime.datetime.now() - datetime.timedelta(
+            days=week_day) + datetime.timedelta(days=(week_offset * 7) + 1)
+
+        # Prints the list of dates in a current week
+        duration = (
+            f'KW: {args.week}~~~{start_date.strftime("%d.%m")} - '
+            f'{(start_date + datetime.timedelta(days=4)).strftime("%d.%m")}')
+
+    with open(args.template, 'r', encoding='utf-8') as template_file:
+        template = SPTemplate(template_file.read())
+        print_sp_template(template, duration, names)
+
+
+if __name__ == '__main__':
+    main()