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""" |
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byceps.services.user_group.user_group_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2014-2024 Jochen Kupperschmidt |
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:License: Revised BSD (see `LICENSE` file for details) |
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""" |
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from datetime import datetime |
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from uuid import UUID |
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from sqlalchemy import select |
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from byceps.database import db |
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from byceps.services.party.models import Party, PartyID |
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from byceps.services.user import user_service |
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from byceps.services.user.models.user import User, UserID |
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from . import user_group_domain_service |
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from .dbmodels import DbUserGroup |
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from .models import UserGroup |
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def create_group( |
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party: Party, |
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creator: User, |
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title: str, |
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description: str | None, |
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) -> UserGroup: |
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"""Create a group.""" |
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created_at = datetime.utcnow() |
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group = user_group_domain_service.create_group( |
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party, created_at, creator, title, description=description |
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) |
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db_group = DbUserGroup( |
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group.id, |
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group.party_id, |
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group.created_at, |
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group.creator.id, |
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group.title, |
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group.description, |
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) |
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db.session.add(db_group) |
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db.session.commit() |
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return group |
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def update_group(group: UserGroup, title: str, description: str) -> None: |
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"""Update a group.""" |
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db_group = _get_db_group(group.id) |
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if db_group is None: |
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raise ValueError(f'Unknown user group ID "{group.id}"') |
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db_group.title = title |
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db_group.description = description or None |
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db.session.commit() |
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def is_title_available(party_id: PartyID, title: str) -> bool: |
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"""Check if the title is yet unused.""" |
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return not db.session.scalar( |
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select( |
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db.exists() |
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.where(DbUserGroup.party_id == party_id) |
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.where(db.func.lower(DbUserGroup.title) == title.lower()) |
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) |
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) |
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def find_group(group_id: UUID) -> UserGroup | None: |
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"""Return the group, if found.""" |
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db_group = _get_db_group(group_id) |
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if db_group is None: |
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return None |
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creator = user_service.get_user(db_group.creator_id, include_avatar=True) |
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return _db_entity_to_group(db_group, {creator.id: creator}) |
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def _get_db_group(group_id: UUID) -> DbUserGroup | None: |
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"""Return the group, if found.""" |
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return db.session.get(DbUserGroup, group_id) |
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def get_groups_for_party(party_id: PartyID) -> list[UserGroup]: |
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"""Return user groups for a party.""" |
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db_groups = db.session.scalars(select(DbUserGroup)).all() |
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user_ids = {db_group.creator_id for db_group in db_groups} |
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users_by_id = user_service.get_users_indexed_by_id( |
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user_ids, include_avatars=True |
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) |
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return [ |
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_db_entity_to_group(db_group, users_by_id) for db_group in db_groups |
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] |
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def _db_entity_to_group( |
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db_group: DbUserGroup, users_by_id: dict[UserID, User] |
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) -> UserGroup: |
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creator = users_by_id[db_group.creator_id] |
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return UserGroup( |
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id=db_group.id, |
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party_id=db_group.party_id, |
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created_at=db_group.created_at, |
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creator=creator, |
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title=db_group.title, |
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description=db_group.description, |
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) |
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byceps /
byceps
