Amirhossein Khalili
6c5fadef2f
Replace persisted event statuses with publication and cancellation flags, and compute public lifecycle labels from event timing and registration capacity. Keep filters, registration checks, and profile responses aligned with the derived status.
100 lines
3.5 KiB
Python
100 lines
3.5 KiB
Python
from django.db.models import Count, F, Q
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EVENT_STATUS_LABELS = {
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"draft": "پیشنویس",
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"cancelled": "لغو شده",
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"completed": "برگزار شده",
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"in_progress": "در حال برگزاری",
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"registration_closed": "پایان ثبتنام",
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"full": "تکمیل ظرفیت",
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"registration_open": "در حال ثبتنام",
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"upcoming": "بهزودی",
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}
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PUBLIC_EVENT_STATUSES = tuple(key for key in EVENT_STATUS_LABELS if key != "draft")
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def active_registration_count_annotation(*, now, relation="registrations"):
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return Count(
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relation,
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filter=Q(**{f"{relation}__is_deleted": False})
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& (
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Q(**{f"{relation}__status__in": ["confirmed", "attended"]})
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| Q(
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**{
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f"{relation}__status": "pending",
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f"{relation}__checkout_expires_at__gt": now,
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}
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)
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),
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distinct=True,
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)
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def event_status_filter(status, *, now, prefix="", count_field="browse_registration_count"):
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"""Return a queryset condition for a derived event status.
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The caller should restrict the queryset to published events and annotate the
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active registration count using ``count_field`` before applying this filter.
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"""
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def field(name):
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return f"{prefix}{name}"
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count = F(count_field)
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before_event_start = Q(**{f"{field('start_time')}__gt": now})
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deadline_open = Q(**{f"{field('registration_end_date')}__isnull": True}) | Q(
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**{f"{field('registration_end_date')}__gt": now}
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)
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if status == "cancelled":
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return Q(**{field("is_cancelled"): True})
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if status == "completed":
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return Q(**{f"{field('end_time')}__lte": now}) & Q(**{field("is_cancelled"): False})
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if status == "in_progress":
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return (
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Q(**{f"{field('start_time')}__lte": now})
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& Q(**{f"{field('end_time')}__gt": now})
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& Q(**{field("is_cancelled"): False})
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)
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if status == "registration_closed":
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return (
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before_event_start
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& Q(**{f"{field('registration_end_date')}__lte": now})
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& Q(**{field("is_cancelled"): False})
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)
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if status == "full":
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return (
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before_event_start
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& deadline_open
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& Q(**{f"{field('capacity')}__isnull": False})
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& Q(**{f"{field('capacity')}__lte": count})
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& Q(**{field("is_cancelled"): False})
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)
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if status == "registration_open":
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registration_started = Q(**{f"{field('registration_start_date')}__isnull": True}) | Q(
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**{f"{field('registration_start_date')}__lte": now}
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)
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capacity_available = Q(**{f"{field('capacity')}__isnull": True}) | Q(
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**{f"{field('capacity')}__gt": count}
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)
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return (
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before_event_start
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& registration_started
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& deadline_open
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& capacity_available
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& Q(**{field("is_cancelled"): False})
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)
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if status == "upcoming":
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registration_not_started = Q(**{f"{field('registration_start_date')}__gt": now})
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capacity_available = Q(**{f"{field('capacity')}__isnull": True}) | Q(
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**{f"{field('capacity')}__gt": count}
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)
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return (
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before_event_start
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& registration_not_started
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& deadline_open
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& capacity_available
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& Q(**{field("is_cancelled"): False})
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)
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raise ValueError(f"Unsupported event status: {status}")
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