amazon-transcreation/backend/app/models/job.py

import enum
import uuid
from datetime import datetime

from sqlalchemy import (
    JSON,
    DateTime,
    Enum,
    Float,
    ForeignKey,
    Integer,
    String,
    Text,
)
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base, TimestampMixin, generate_uuid


class Programme(str, enum.Enum):
    retail = "retail"
    prime = "prime"
    brand = "brand"


class JobType(str, enum.Enum):
    main = "main"
    derived = "derived"


class JobStatus(str, enum.Enum):
    created = "created"
    validating = "validating"
    queued = "queued"
    running = "running"
    partial_complete = "partial_complete"
    complete = "complete"
    error = "error"
    exported = "exported"


class LocaleType(str, enum.Enum):
    main = "main"
    derived = "derived"


class LocaleStatus(str, enum.Enum):
    queued = "queued"
    running = "running"
    complete = "complete"
    error = "error"


class Job(Base, TimestampMixin):
    __tablename__ = "jobs"

    id: Mapped[uuid.UUID] = mapped_column(
        primary_key=True, default=generate_uuid
    )
    client_id: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("clients.id", ondelete="CASCADE"), nullable=False
    )
    created_by: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("users.id"), nullable=False
    )
    job_ref: Mapped[str | None] = mapped_column(String(100), nullable=True)
    campaign_name: Mapped[str] = mapped_column(String(255), nullable=False)
    programme: Mapped[Programme] = mapped_column(
        Enum(Programme, name="programme_type", create_constraint=True),
        nullable=False,
    )
    channel: Mapped[str] = mapped_column(String(100), nullable=False)
    sub_channel: Mapped[str | None] = mapped_column(String(100), nullable=True)
    context_prompt: Mapped[str | None] = mapped_column(Text, nullable=True)
    job_type: Mapped[JobType] = mapped_column(
        Enum(JobType, name="job_type", create_constraint=True),
        default=JobType.main,
        nullable=False,
    )
    parent_job_id: Mapped[uuid.UUID | None] = mapped_column(
        ForeignKey("jobs.id"), nullable=True
    )
    status: Mapped[JobStatus] = mapped_column(
        Enum(JobStatus, name="job_status", create_constraint=True),
        default=JobStatus.created,
        nullable=False,
    )
    total_token_usage: Mapped[int] = mapped_column(Integer, default=0)
    total_estimated_cost: Mapped[float] = mapped_column(Float, default=0.0)

    # Relationships
    client = relationship("Client", back_populates="jobs")
    creator = relationship("User", back_populates="jobs_created")
    parent_job = relationship("Job", remote_side="Job.id", lazy="selectin")
    locale_instances = relationship(
        "LocaleInstance", back_populates="job", lazy="selectin", cascade="all, delete-orphan"
    )
    source_lines = relationship(
        "SourceLine", back_populates="job", lazy="selectin", cascade="all, delete-orphan"
    )


class LocaleInstance(Base, TimestampMixin):
    __tablename__ = "locale_instances"

    id: Mapped[uuid.UUID] = mapped_column(
        primary_key=True, default=generate_uuid
    )
    job_id: Mapped[uuid.UUID] = mapped_column(
        ForeignKey("jobs.id", ondelete="CASCADE"), nullable=False
    )
    locale_code: Mapped[str] = mapped_column(String(10), nullable=False)
    locale_type: Mapped[LocaleType] = mapped_column(
        Enum(LocaleType, name="locale_type", create_constraint=True),
        nullable=False,
    )
    status: Mapped[LocaleStatus] = mapped_column(
        Enum(LocaleStatus, name="locale_status", create_constraint=True),
        default=LocaleStatus.queued,
        nullable=False,
    )
    started_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    completed_at: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    token_usage: Mapped[int] = mapped_column(Integer, default=0)
    estimated_cost: Mapped[float] = mapped_column(Float, default=0.0)
    output_file_path: Mapped[str | None] = mapped_column(String(500), nullable=True)
    error_log: Mapped[str | None] = mapped_column(Text, nullable=True)
    tm_files_loaded: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    ref_files_loaded: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    agent_version: Mapped[str | None] = mapped_column(String(50), nullable=True)
    progress: Mapped[float] = mapped_column(Float, default=0.0, nullable=False, server_default="0")
    current_stage: Mapped[str | None] = mapped_column(String(100), nullable=True)

    # Relationships
    job = relationship("Job", back_populates="locale_instances")
    output_rows = relationship(
        "OutputRow", back_populates="instance", lazy="selectin", cascade="all, delete-orphan"
    )
    token_usage_logs = relationship(
        "TokenUsageLog", back_populates="instance", lazy="selectin", cascade="all, delete-orphan"
    )