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""" |
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byceps.services.ticketing.ticket_seat_management_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2006-2020 Jochen Kupperschmidt |
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:License: Modified BSD, see LICENSE for details. |
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""" |
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from ...database import db |
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from ...typing import UserID |
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from ..seating.models.seat import Seat as DbSeat |
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from ..seating import seat_service |
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from ..seating.transfer.models import SeatID |
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from . import event_service |
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from .exceptions import ( |
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SeatChangeDeniedForBundledTicket, |
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SeatChangeDeniedForGroupSeat, |
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TicketCategoryMismatch, |
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TicketIsRevoked, |
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) |
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from .models.ticket import Ticket as DbTicket |
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from . import ticket_service |
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from .transfer.models import TicketID |
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def appoint_seat_manager( |
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ticket_id: TicketID, manager_id: UserID, initiator_id: UserID |
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) -> None: |
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"""Appoint the user as the ticket's seat manager.""" |
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ticket = _get_ticket(ticket_id) |
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ticket.seat_managed_by_id = manager_id |
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event = event_service.build_event( |
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'seat-manager-appointed', |
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ticket.id, |
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{ |
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'appointed_seat_manager_id': str(manager_id), |
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'initiator_id': str(initiator_id), |
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}, |
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) |
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db.session.add(event) |
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db.session.commit() |
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def withdraw_seat_manager(ticket_id: TicketID, initiator_id: UserID) -> None: |
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"""Withdraw the ticket's custom seat manager.""" |
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ticket = _get_ticket(ticket_id) |
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ticket.seat_managed_by_id = None |
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event = event_service.build_event( |
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'seat-manager-withdrawn', |
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ticket.id, |
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{ |
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'initiator_id': str(initiator_id), |
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}, |
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) |
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db.session.add(event) |
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db.session.commit() |
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def occupy_seat( |
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ticket_id: TicketID, seat_id: SeatID, initiator_id: UserID |
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) -> None: |
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"""Occupy the seat with this ticket.""" |
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ticket = _get_ticket(ticket_id) |
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_deny_seat_management_if_ticket_belongs_to_bundle(ticket) |
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seat = seat_service.find_seat(seat_id) |
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if seat is None: |
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raise ValueError('Invalid seat ID') |
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if seat.category_id != ticket.category_id: |
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raise TicketCategoryMismatch( |
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'Ticket and seat belong to different categories.' |
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) |
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_deny_seat_management_if_seat_belongs_to_group(seat) |
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previous_seat_id = ticket.occupied_seat_id |
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ticket.occupied_seat_id = seat.id |
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event_data = { |
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'seat_id': str(seat.id), |
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'initiator_id': str(initiator_id), |
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} |
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if previous_seat_id is not None: |
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event_data['previous_seat_id'] = str(previous_seat_id) |
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event = event_service.build_event('seat-occupied', ticket.id, event_data) |
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db.session.add(event) |
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db.session.commit() |
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def release_seat(ticket_id: TicketID, initiator_id: UserID) -> None: |
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"""Release the seat occupied by this ticket.""" |
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ticket = _get_ticket(ticket_id) |
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_deny_seat_management_if_ticket_belongs_to_bundle(ticket) |
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seat = seat_service.find_seat(ticket.occupied_seat_id) |
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if seat is None: |
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raise ValueError('Ticket does not occupy a seat.') |
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_deny_seat_management_if_seat_belongs_to_group(seat) |
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ticket.occupied_seat_id = None |
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event = event_service.build_event( |
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'seat-released', |
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ticket.id, |
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{ |
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'seat_id': str(seat.id), |
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'initiator_id': str(initiator_id), |
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}, |
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) |
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db.session.add(event) |
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db.session.commit() |
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def _get_ticket(ticket_id: TicketID) -> DbTicket: |
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"""Return the ticket with that ID. |
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Raise an exception if the ID is unknown or if the ticket has been |
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revoked. |
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""" |
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ticket = ticket_service.find_ticket(ticket_id) |
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if ticket is None: |
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raise ValueError(f'Unknown ticket ID "{ticket_id}"') |
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if ticket.revoked: |
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raise TicketIsRevoked(f'Ticket {ticket_id} has been revoked.') |
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return ticket |
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def _deny_seat_management_if_ticket_belongs_to_bundle(ticket: DbTicket) -> None: |
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"""Raise an exception if this ticket belongs to a bundle. |
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A ticket bundle is meant to occupy a matching seat group with the |
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appropriate mechanism, not to separately occupy single seats. |
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""" |
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if ticket.belongs_to_bundle: |
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raise SeatChangeDeniedForBundledTicket( |
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f"Ticket '{ticket.code}' belongs to a bundle and, thus, " |
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'must not be used to occupy or release a single seat.' |
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) |
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def _deny_seat_management_if_seat_belongs_to_group(seat: DbSeat) -> None: |
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if seat.assignment is not None: |
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raise SeatChangeDeniedForGroupSeat( |
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f"Seat '{seat.label}' belongs to a group and, thus, " |
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'cannot be occupied by a single ticket, or removed separately.' |
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) |
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byceps /
byceps
