129 lines
5.0 KiB
Python
129 lines
5.0 KiB
Python
import uuid
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from datetime import datetime, timezone
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from sqlalchemy import DateTime, func
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlmodel import Field, SQLModel, select
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def _now() -> datetime:
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return datetime.now(timezone.utc)
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class HiringCosts(SQLModel, table=True):
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__tablename__ = "hiring_costs"
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id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
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job_post_id: uuid.UUID | None = Field(default=None, foreign_key="job_posts.id")
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# Source attribution (REQ-ANL-09): spend tagged to a channel feeds the
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# cost-per-application column of source performance; untagged spend only
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# ever feeds cost-per-hire.
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source_channel_id: int | None = Field(default=None, foreign_key="source_channels.id")
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cost_type: str = Field(default="other")
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amount: float = Field(default=0.0)
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currency: str = Field(default="USD")
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incurred_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
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description: str | None = Field(default=None)
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created_by: uuid.UUID = Field(foreign_key="users.id")
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created_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
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updated_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
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@staticmethod
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def _as_uuid(record_id) -> uuid.UUID | None:
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if record_id in (None, ""):
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return None
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try:
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return uuid.UUID(str(record_id))
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except ValueError:
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return None
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@classmethod
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async def get_by_id(cls, session: AsyncSession, record_id):
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uid = cls._as_uuid(record_id)
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if uid is None:
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return None
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result = await session.execute(select(cls).where(cls.id == uid))
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return result.scalars().first()
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@classmethod
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async def fetch_costs(
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cls,
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session: AsyncSession,
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*,
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job_post_id=None,
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from_date=None,
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to_date=None,
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top: int | None = None,
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skip: int = 0,
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):
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statement = select(cls)
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if job_post_id is not None:
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uid = cls._as_uuid(job_post_id)
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if uid is not None:
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statement = statement.where(cls.job_post_id == uid)
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if from_date is not None:
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statement = statement.where(cls.incurred_at >= from_date)
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if to_date is not None:
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statement = statement.where(cls.incurred_at < to_date)
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count_statement = select(func.count()).select_from(statement.subquery())
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total = (await session.execute(count_statement)).scalar_one()
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statement = statement.order_by(cls.incurred_at.desc())
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if skip:
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statement = statement.offset(skip)
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if top is not None:
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statement = statement.limit(top)
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result = await session.execute(statement)
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return list(result.scalars().all()), total
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@classmethod
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async def insert_cost(cls, session: AsyncSession, fields: dict):
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row = cls(**fields)
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session.add(row)
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await session.commit()
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return await cls.get_by_id(session, row.id)
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@classmethod
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def scoped_to_job(cls, statement, department=None, recruiter_id=None):
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if not department and not recruiter_id:
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return statement
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from job.job_post.models import JobPosts
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statement = statement.outerjoin(JobPosts, cls.job_post_id == JobPosts.id)
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if department:
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statement = statement.where(JobPosts.department == department)
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rid = cls._as_uuid(recruiter_id)
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if rid is not None:
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statement = statement.where(JobPosts.has_recruiter(rid))
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return statement
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@classmethod
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async def sum_amount(cls, session: AsyncSession, *, from_date=None, to_date=None,
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department=None, recruiter_id=None):
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statement = select(func.coalesce(func.sum(cls.amount), 0.0))
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if from_date is not None:
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statement = statement.where(cls.incurred_at >= from_date)
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if to_date is not None:
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statement = statement.where(cls.incurred_at < to_date)
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statement = cls.scoped_to_job(statement, department, recruiter_id)
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result = await session.execute(statement)
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return float(result.scalar_one() or 0.0)
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@classmethod
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async def sum_by_source_channel(
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cls, session: AsyncSession, *, from_date=None, to_date=None,
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department=None, recruiter_id=None,
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):
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statement = select(
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cls.source_channel_id,
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func.coalesce(func.sum(cls.amount), 0.0),
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).where(cls.source_channel_id.is_not(None))
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if from_date is not None:
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statement = statement.where(cls.incurred_at >= from_date)
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if to_date is not None:
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statement = statement.where(cls.incurred_at < to_date)
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statement = cls.scoped_to_job(statement, department, recruiter_id)
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statement = statement.group_by(cls.source_channel_id)
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result = await session.execute(statement)
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return {channel_id: float(total or 0.0) for channel_id, total in result.all()}
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import users.models as _users_models # noqa: E402, F401
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