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

import uuid
from datetime import datetime, timezone
from typing import TYPE_CHECKING, List, Optional

from sqlalchemy import DateTime
from sqlalchemy.ext.asyncio import AsyncSession
from sqlmodel import Field, Relationship, SQLModel, select

if TYPE_CHECKING:
    from inbox.models import Inbox
    from users.models import Users


def _now() -> datetime:
    return datetime.now(timezone.utc)


# Every datetime below is aware (see _now, and the API parses ISO input carrying
# an offset), so each column is declared timestamptz. SQLModel maps a bare
# `datetime` to TIMESTAMP WITHOUT TIME ZONE, and asyncpg refuses to bind an aware
# value to one — "can't subtract offset-naive and offset-aware datetimes" — which
# turns every insert here into a 500. Same pairing as job/job_post/models.py.


class Interviews(SQLModel, table=True):
    __tablename__ = "interviews"

    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    interview_date: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    interview_time: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    interview_type: str = Field(default="")
    interview_status: str = Field(default="")
    inbox_id: int | None = Field(default=None, foreign_key="inbox.id")
    inbox: Optional["Inbox"] = Relationship(
        back_populates="interviews",
        sa_relationship_kwargs={"lazy": "selectin"},
    )

    @staticmethod
    def _as_uuid(record_id) -> uuid.UUID | None:
        try:
            return uuid.UUID(str(record_id))
        except ValueError:
            return None

    @classmethod
    async def get_interview_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 get_interviews_by_inbox(cls, session: AsyncSession, inbox_id: int):
        result = await session.execute(
            select(cls).where(cls.inbox_id == inbox_id).order_by(cls.interview_date.desc())
        )
        return result.scalars().all()

    @classmethod
    async def insert_interview(cls, session: AsyncSession, fields: dict):
        row = cls(**fields)
        session.add(row)
        await session.commit()
        return await cls.get_interview_by_id(session, row.id)

    @classmethod
    async def update_interview(cls, session: AsyncSession, record_id, fields: dict):
        row = await cls.get_interview_by_id(session, record_id)
        if not row:
            return None
        for key, value in fields.items():
            setattr(row, key, value)
        session.add(row)
        await session.commit()
        await session.refresh(row)
        return row


class Notes(SQLModel, table=True):
    __tablename__ = "notes"

    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    note: str = Field(default="")
    created_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    updated_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    user_id: uuid.UUID | None = Field(default=None, foreign_key="users.id")
    created_by: uuid.UUID | None = Field(default=None, foreign_key="users.id")
    user: Optional["Users"] = Relationship(
        back_populates="notes",
        sa_relationship_kwargs={"lazy": "selectin", "foreign_keys": "[Notes.user_id]"},
    )
    author: Optional["Users"] = Relationship(
        back_populates="authored_notes",
        sa_relationship_kwargs={"lazy": "selectin", "foreign_keys": "[Notes.created_by]"},
    )

    @staticmethod
    def _as_uuid(record_id) -> uuid.UUID | None:
        try:
            return uuid.UUID(str(record_id))
        except ValueError:
            return None

    @classmethod
    async def get_note_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 get_notes_by_user(cls, session: AsyncSession, user_id):
        uid = cls._as_uuid(user_id)
        if uid is None:
            return []
        result = await session.execute(
            select(cls).where(cls.user_id == uid).order_by(cls.created_at.desc())
        )
        return result.scalars().all()

    @classmethod
    async def insert_note(cls, session: AsyncSession, fields: dict):
        row = cls(**fields)
        session.add(row)
        await session.commit()
        return await cls.get_note_by_id(session, row.id)

    @classmethod
    async def update_note(cls, session: AsyncSession, record_id, fields: dict):
        row = await cls.get_note_by_id(session, record_id)
        if not row:
            return None
        for key, value in fields.items():
            setattr(row, key, value)
        row.updated_at = _now()
        session.add(row)
        await session.commit()
        await session.refresh(row)
        return row


class Activity(SQLModel, table=True):
    __tablename__ = "activity"

    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    activity_type: str = Field(default="")
    activity_date: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    activity_time: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    activity_status: str = Field(default="")
    description: str | None = Field(default=None)
    inbox_id: int | None = Field(default=None, foreign_key="inbox.id")
    inbox: Optional["Inbox"] = Relationship(
        back_populates="activity",
        sa_relationship_kwargs={"lazy": "selectin"},
    )

    @staticmethod
    def _as_uuid(record_id) -> uuid.UUID | None:
        try:
            return uuid.UUID(str(record_id))
        except ValueError:
            return None

    @classmethod
    async def get_activity_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 get_activity_by_inbox(cls, session: AsyncSession, inbox_id: int):
        result = await session.execute(
            select(cls).where(cls.inbox_id == inbox_id).order_by(cls.activity_date.desc())
        )
        return result.scalars().all()

    @classmethod
    async def insert_activity(cls, session: AsyncSession, fields: dict):
        row = cls(**fields)
        session.add(row)
        await session.commit()
        return await cls.get_activity_by_id(session, row.id)

    @classmethod
    async def update_activity(cls, session: AsyncSession, record_id, fields: dict):
        row = await cls.get_activity_by_id(session, record_id)
        if not row:
            return None
        for key, value in fields.items():
            setattr(row, key, value)
        session.add(row)
        await session.commit()
        await session.refresh(row)
        return row


class Feedback(SQLModel, table=True):
    __tablename__ = "feedback"

    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    review: str = Field(default="")
    financial_status: str = Field(default="")
    score: float = Field(default=0.0)
    note: str | None = Field(default=None)
    created_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    updated_at: datetime = Field(default_factory=_now, sa_type=DateTime(timezone=True))
    reviewed_by: uuid.UUID | None = Field(default=None, foreign_key="users.id")
    inbox_id: int | None = Field(default=None, foreign_key="inbox.id")
    user: Optional["Users"] = Relationship(
        back_populates="feedback",
        sa_relationship_kwargs={"lazy": "selectin"},
    )
    inbox: Optional["Inbox"] = Relationship(
        back_populates="feedback",
        sa_relationship_kwargs={"lazy": "selectin"},
    )

    @staticmethod
    def _as_uuid(record_id) -> uuid.UUID | None:
        try:
            return uuid.UUID(str(record_id))
        except ValueError:
            return None

    @classmethod
    async def get_feedback_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 get_feedback_by_inbox(cls, session: AsyncSession, inbox_id: int):
        result = await session.execute(
            select(cls).where(cls.inbox_id == inbox_id).order_by(cls.created_at.desc())
        )
        return result.scalars().all()

    @classmethod
    async def insert_feedback(cls, session: AsyncSession, fields: dict):
        row = cls(**fields)
        session.add(row)
        await session.commit()
        return await cls.get_feedback_by_id(session, row.id)

    @classmethod
    async def update_feedback(cls, session: AsyncSession, record_id, fields: dict):
        row = await cls.get_feedback_by_id(session, record_id)
        if not row:
            return None
        for key, value in fields.items():
            setattr(row, key, value)
        row.updated_at = _now()
        session.add(row)
        await session.commit()
        await session.refresh(row)
        return row


import users.models as _users_models  # noqa: E402, F401