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""" |
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byceps.services.ticketing.attendance_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2006-2021 Jochen Kupperschmidt |
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:License: Revised BSD (see `LICENSE` file for details) |
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""" |
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from __future__ import annotations |
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from collections import Counter, defaultdict |
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from datetime import datetime |
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from itertools import chain |
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from sqlalchemy.dialects.postgresql import insert |
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from ...database import db, upsert |
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from ...typing import BrandID, PartyID, UserID |
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from ..party.dbmodels.party import Party as DbParty |
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from ..party import service as party_service |
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from ..party.transfer.models import Party |
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from .dbmodels.archived_attendance import ( |
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ArchivedAttendance as DbArchivedAttendance, |
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) |
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from .dbmodels.category import Category as DbCategory |
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from .dbmodels.ticket import Ticket as DbTicket |
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def create_archived_attendance(user_id: UserID, party_id: PartyID) -> None: |
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"""Create an archived attendance of the user at the party.""" |
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table = DbArchivedAttendance.__table__ |
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query = insert(table) \ |
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.values({ |
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'user_id': str(user_id), |
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'party_id': str(party_id), |
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}) \ |
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.on_conflict_do_nothing(constraint=table.primary_key) |
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db.session.execute(query) |
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def delete_archived_attendance(user_id: UserID, party_id: PartyID) -> None: |
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"""Delete the archived attendance of the user at the party.""" |
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db.session.query(DbArchivedAttendance) \ |
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.filter_by(user_id=user_id, party_id=party_id) \ |
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.delete() |
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db.session.commit() |
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def get_attended_parties(user_id: UserID) -> list[Party]: |
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"""Return the parties the user has attended in the past.""" |
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ticket_attendance_party_ids = _get_attended_party_ids(user_id) |
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archived_attendance_party_ids = _get_archived_attendance_party_ids(user_id) |
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party_ids = set( |
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chain(ticket_attendance_party_ids, archived_attendance_party_ids) |
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) |
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return party_service.get_parties(party_ids) |
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def _get_attended_party_ids(user_id: UserID) -> set[PartyID]: |
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"""Return the IDs of the non-legacy parties the user has attended.""" |
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party_id_rows = db.session \ |
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.query(DbParty.id) \ |
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.filter(DbParty.ends_at < datetime.utcnow()) \ |
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.join(DbCategory) \ |
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.join(DbTicket) \ |
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.filter(DbTicket.revoked == False) \ |
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.filter(DbTicket.used_by_id == user_id) \ |
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.all() |
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return {row[0] for row in party_id_rows} |
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def _get_archived_attendance_party_ids(user_id: UserID) -> set[PartyID]: |
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"""Return the IDs of the legacy parties the user has attended.""" |
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party_id_rows = db.session \ |
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.query(DbArchivedAttendance.party_id) \ |
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.filter(DbArchivedAttendance.user_id == user_id) \ |
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.all() |
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return {row[0] for row in party_id_rows} |
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def get_attendee_ids_for_party(party_id: PartyID) -> set[UserID]: |
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"""Return the party's attendees' IDs.""" |
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ticket_rows = db.session \ |
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.query(DbTicket.used_by_id) \ |
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.join(DbCategory) \ |
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.filter(DbCategory.party_id == party_id) \ |
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.filter(DbTicket.revoked == False) \ |
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.filter(DbTicket.used_by_id != None) \ |
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.all() |
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archived_attendance_rows = db.session \ |
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.query(DbArchivedAttendance.user_id) \ |
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.filter(DbArchivedAttendance.party_id == party_id) \ |
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.all() |
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rows = ticket_rows + archived_attendance_rows |
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return {row for row in rows} |
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def get_top_attendees_for_brand(brand_id: BrandID) -> list[tuple[UserID, int]]: |
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"""Return the attendees with the highest number of parties of this |
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brand visited. |
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""" |
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parties = party_service.get_parties_for_brand(brand_id) |
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party_ids = {p.id for p in parties} |
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top_ticket_attendance_counts = _get_top_ticket_attendees_for_parties( |
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brand_id |
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) |
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top_archived_attendance_counts = _get_top_archived_attendees_for_parties( |
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brand_id |
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) |
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top_attendance_counts = _merge_top_attendance_counts( |
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[top_ticket_attendance_counts, top_archived_attendance_counts] |
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) |
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# Select top attendees with more than one attendance. |
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top_attendees = top_attendance_counts.most_common(50) |
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top_attendees = [ |
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(user_id, attendance_count) |
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for user_id, attendance_count in top_attendees |
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if attendance_count > 1 |
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] |
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return top_attendees |
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def _get_top_ticket_attendees_for_parties( |
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brand_id: BrandID, |
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) -> list[tuple[UserID, int]]: |
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user_id_column = db.aliased(DbTicket).used_by_id |
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attendance_count = db.session \ |
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.query( |
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db.func.count(DbCategory.party_id.distinct()), |
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) \ |
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.join(DbParty) \ |
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.filter(DbParty.brand_id == brand_id) \ |
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.join(DbTicket) \ |
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.filter(DbTicket.revoked == False) \ |
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.filter(DbTicket.used_by_id == user_id_column) \ |
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.subquery() \ |
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.as_scalar() |
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return db.session \ |
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.query( |
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user_id_column.distinct(), |
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attendance_count, |
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) \ |
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.filter(user_id_column != None) \ |
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.filter(attendance_count > 0) \ |
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.order_by(attendance_count.desc()) \ |
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.all() |
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def _get_top_archived_attendees_for_parties( |
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brand_id: BrandID, |
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) -> list[tuple[UserID, int]]: |
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attendance_count_column = db.func \ |
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.count(DbArchivedAttendance.user_id) \ |
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.label('attendance_count') |
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return db.session \ |
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.query( |
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DbArchivedAttendance.user_id, |
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attendance_count_column, |
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) \ |
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.join(DbParty) \ |
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.filter(DbParty.brand_id == brand_id) \ |
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.group_by(DbArchivedAttendance.user_id) \ |
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.order_by(attendance_count_column.desc()) \ |
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.all() |
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def _merge_top_attendance_counts( |
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xs: list[list[tuple[UserID, int]]] |
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) -> Counter[UserID]: |
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counter: Counter = Counter() |
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for x in xs: |
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counter.update(dict(x)) |
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return counter |
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byceps /
byceps
