HR-ATS-Portal/backend/job/assignment/models.py

220 lines
7.8 KiB
Python

import uuid
from datetime import datetime, timezone
from sqlalchemy import DateTime, func
from sqlalchemy.ext.asyncio import AsyncSession
from sqlmodel import Field, SQLModel, select
def _now() -> datetime:
return datetime.now(timezone.utc)
class JobAssignments(SQLModel, table=True):
__tablename__ = "job_assignments"
id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
job_post_id: uuid.UUID = Field(index=True, foreign_key="job_posts.id")
user_id: uuid.UUID = Field(foreign_key="users.id")
assignment_role: str = Field(default="primary_recruiter")
valid_from: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
valid_to: datetime | None = Field(default=None, sa_type=DateTime(timezone=True))
assigned_by: uuid.UUID = Field(foreign_key="users.id")
created_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
@staticmethod
def _as_uuid(record_id) -> uuid.UUID | None:
if record_id in (None, ""):
return None
try:
return uuid.UUID(str(record_id))
except ValueError:
return None
@classmethod
async def get_by_id(cls, session: AsyncSession, record_id):
uid = cls._as_uuid(record_id)
if uid is None:
return None
result = await session.execute(select(cls).where(cls.id == uid))
return result.scalars().first()
@classmethod
async def fetch_by_job(
cls,
session: AsyncSession,
job_post_id,
*,
current_only: bool = True,
assignment_role: str | None = None,
):
uid = cls._as_uuid(job_post_id)
if uid is None:
return []
statement = select(cls).where(cls.job_post_id == uid)
if current_only:
statement = statement.where(cls.valid_to.is_(None))
if assignment_role:
statement = statement.where(cls.assignment_role == assignment_role)
statement = statement.order_by(cls.valid_from.desc())
result = await session.execute(statement)
return list(result.scalars().all())
@classmethod
async def close_current(cls, session: AsyncSession, job_post_id, assignment_role):
"""End every open interval of this role on the job. Returns how many closed."""
uid = cls._as_uuid(job_post_id)
if uid is None or not assignment_role:
return 0
statement = select(cls).where(
cls.job_post_id == uid,
cls.assignment_role == assignment_role,
cls.valid_to.is_(None),
)
result = await session.execute(statement)
rows = list(result.scalars().all())
if not rows:
return 0
now = _now()
for row in rows:
row.valid_to = now
session.add(row)
await session.commit()
return len(rows)
@classmethod
async def sync_open(cls, session: AsyncSession, job_post_id, assignment_role, user_ids, assigned_by):
"""Make open intervals for this role match user_ids (order preserved)."""
uid = cls._as_uuid(job_post_id)
by_uid = cls._as_uuid(assigned_by)
if uid is None or not assignment_role or by_uid is None:
return 0
wanted = []
seen = set()
for raw in user_ids or []:
user_uid = cls._as_uuid(raw)
if user_uid is None:
continue
key = str(user_uid)
if key in seen:
continue
seen.add(key)
wanted.append(user_uid)
current = await cls.fetch_by_job(
session, uid, current_only=True, assignment_role=assignment_role,
)
current_map = {str(r.user_id): r for r in current}
now = _now()
wanted_set = {str(u) for u in wanted}
changed = False
for key, row in current_map.items():
if key not in wanted_set:
row.valid_to = now
session.add(row)
changed = True
for user_uid in wanted:
if str(user_uid) in current_map:
continue
session.add(cls(
job_post_id=uid,
user_id=user_uid,
assignment_role=assignment_role,
assigned_by=by_uid,
))
changed = True
if changed:
await session.commit()
return len(wanted)
@classmethod
async def insert_assignment(cls, session: AsyncSession, fields: dict):
row = cls(**fields)
session.add(row)
await session.commit()
return await cls.get_by_id(session, row.id)
@classmethod
async def count_open_reqs_by_user(cls, session: AsyncSession, user_id):
uid = cls._as_uuid(user_id)
if uid is None:
return 0
statement = (
select(func.count())
.select_from(cls)
.where(cls.user_id == uid, cls.valid_to.is_(None))
)
result = await session.execute(statement)
return result.scalar_one()
@classmethod
async def count_open_reqs_by_users(cls, session: AsyncSession, user_ids):
"""Open requisitions per user: current assignments joined to open job_posts."""
from job.job_post.enums import RequisitionStatus
from job.job_post.models import JobPosts
uids = [u for u in (user_ids or []) if u]
if not uids:
return {}
statement = (
select(cls.user_id, func.count())
.select_from(cls)
.join(JobPosts, JobPosts.id == cls.job_post_id)
.where(
cls.user_id.in_(uids),
cls.valid_to.is_(None),
JobPosts.requisition_status == RequisitionStatus.OPEN.value,
JobPosts.is_deleted == False, # noqa: E712
)
.group_by(cls.user_id)
)
result = await session.execute(statement)
return {uid: int(n or 0) for uid, n in result.all()}
class ApplicationAssignments(SQLModel, table=True):
__tablename__ = "application_assignments"
id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
inbox_id: int = Field(index=True, foreign_key="inbox.id")
user_id: uuid.UUID = Field(foreign_key="users.id")
assignment_role: str = Field(default="primary_recruiter")
valid_from: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
valid_to: datetime | None = Field(default=None, sa_type=DateTime(timezone=True))
assigned_by: uuid.UUID = Field(foreign_key="users.id")
created_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
@staticmethod
def _as_uuid(record_id) -> uuid.UUID | None:
if record_id in (None, ""):
return None
try:
return uuid.UUID(str(record_id))
except ValueError:
return None
@classmethod
async def get_by_id(cls, session: AsyncSession, record_id):
uid = cls._as_uuid(record_id)
if uid is None:
return None
result = await session.execute(select(cls).where(cls.id == uid))
return result.scalars().first()
@classmethod
async def fetch_by_inbox(cls, session: AsyncSession, inbox_id: int, *, current_only: bool = True):
statement = select(cls).where(cls.inbox_id == int(inbox_id))
if current_only:
statement = statement.where(cls.valid_to.is_(None))
statement = statement.order_by(cls.valid_from.desc())
result = await session.execute(statement)
return list(result.scalars().all())
@classmethod
async def insert_assignment(cls, session: AsyncSession, fields: dict):
row = cls(**fields)
session.add(row)
await session.commit()
return await cls.get_by_id(session, row.id)
import users.models as _users_models # noqa: E402, F401