Midgard
7e9b23d4a1
These stand for "admitted" and "interested", but we have constants for that. Also: fix a typo, remove cargo culted `.all()`, use saner indentation.
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
from datetime import date, timedelta
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from typing import List
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from KeRS.celery import app
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from events.models import Event, EventRegistration
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from users.models import CustomUser
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def calc_score(user: CustomUser, for_date):
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registrations_last_month = EventRegistration.objects.filter(
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user_id=user.id,
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event__date__gt=for_date - timedelta(days=30),
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event__date__lte=for_date,
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state=EventRegistration.ADMITTED
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)
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score = 0
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for r in registrations_last_month:
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days_ago = (date.today() - r.event.date.date()).days
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score += 1 / (days_ago + 1)
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return score
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@app.task(bind=True)
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def assign_reservations(self):
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"""
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Check if there are any events tomorrow.
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If so, calculate the current score for every interested user and assign the ones with the lowest scores.
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:param self:
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:return:
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"""
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print("Assigning reservations")
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print("======================")
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# Get all events of tomorrow
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events = Event.objects.all().filter(date__date=date.today() + timedelta(days=1))
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# Reservations
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registrations: List[EventRegistration] = EventRegistration.objects.filter(
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event_id__in=map(lambda event: event.id, events),
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state=EventRegistration.INTERESTED)
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if len(registrations) == 0:
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print("NO REGISTRATIONS?")
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# Relevant users
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users = set(map(lambda r: r.user, registrations))
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scores = list(map(calc_score, users))
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queue = sorted(list(zip(users, scores)), key=lambda tup: tup[1])
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print(f"Scores: {scores}")
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print(f"Queue: {queue}")
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for event in events:
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print(f"EVENT: {event.date} - {event.capacity}")
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event_registrations = list(filter(lambda r: r.event == event, registrations))
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event_users = set(map(lambda r: r.user, event_registrations))
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event_queue = list(filter(lambda element: element[0] in event_users, queue))
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for user in event_queue[0:event.capacity]:
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print(f"Selected {user[0]}")
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r = EventRegistration.objects.get(
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event_id=event.id,
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user_id=user[0].id
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)
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r.state = EventRegistration.ADMITTED
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r.save()
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