4666c4f6d2
Migration sequence: add nullable → backfill via user_id/ai_session chain
→ verify zero NULLs → SET NOT NULL → CREATE INDEX.
Tables: sessions, attachments, session_supporting_data,
session_resolution_outputs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
109 lines
4.3 KiB
Python
109 lines
4.3 KiB
Python
import uuid
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from datetime import datetime, timezone
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from typing import Optional, Any, TYPE_CHECKING
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from sqlalchemy import String, DateTime, ForeignKey, Boolean, Text
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import sqlalchemy as sa
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from sqlalchemy.dialects.postgresql import UUID, JSONB
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from app.core.database import Base
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if TYPE_CHECKING:
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from app.models.session_share import SessionShare
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class Session(Base):
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__tablename__ = "sessions"
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id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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primary_key=True,
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default=uuid.uuid4
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)
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tree_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("trees.id"),
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nullable=False,
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index=True
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)
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user_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("users.id"),
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nullable=False,
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index=True
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)
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account_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("accounts.id", ondelete="CASCADE"),
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nullable=False,
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index=True,
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)
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tree_snapshot: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False)
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path_taken: Mapped[list[str]] = mapped_column(JSONB, nullable=False, default=list)
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decisions: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, default=list)
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custom_steps: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False, default=list)
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started_at: Mapped[Optional[datetime]] = mapped_column(
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DateTime(timezone=True),
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nullable=True,
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default=lambda: datetime.now(timezone.utc),
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index=True
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)
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completed_at: Mapped[Optional[datetime]] = mapped_column(
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DateTime(timezone=True),
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nullable=True,
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index=True
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)
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outcome: Mapped[Optional[str]] = mapped_column(String(20), nullable=True, index=True)
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outcome_notes: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
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ticket_number: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
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client_name: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)
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exported: Mapped[bool] = mapped_column(Boolean, default=False)
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session_variables: Mapped[dict[str, Any]] = mapped_column(
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JSONB, nullable=False, server_default=sa.text("'{}'::jsonb")
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)
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scratchpad: Mapped[Optional[str]] = mapped_column(
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Text, nullable=True, server_default=sa.text("''")
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)
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next_steps: Mapped[Optional[str]] = mapped_column(
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Text, nullable=True, server_default=sa.text("''")
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)
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# Prepared sessions (flexible intake)
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prepared_by_id: Mapped[Optional[uuid.UUID]] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("users.id"),
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nullable=True,
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index=True
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)
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assigned_to_id: Mapped[Optional[uuid.UUID]] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("users.id"),
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nullable=True,
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index=True
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)
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# Relationships
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tree: Mapped["Tree"] = relationship("Tree", back_populates="sessions")
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user: Mapped["User"] = relationship("User", foreign_keys=[user_id], back_populates="sessions")
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prepared_by: Mapped[Optional["User"]] = relationship("User", foreign_keys=[prepared_by_id])
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assigned_to: Mapped[Optional["User"]] = relationship("User", foreign_keys=[assigned_to_id])
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attachments: Mapped[list["Attachment"]] = relationship("Attachment", back_populates="session")
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shares: Mapped[list["SessionShare"]] = relationship("SessionShare", back_populates="session", cascade="all, delete-orphan")
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supporting_data = relationship("SessionSupportingData", back_populates="session", cascade="all, delete-orphan", order_by="SessionSupportingData.sort_order")
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# PSA ticket link
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psa_ticket_id: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
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psa_connection_id: Mapped[Optional[uuid.UUID]] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("psa_connections.id", ondelete="SET NULL"),
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nullable=True,
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)
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psa_connection = relationship("PsaConnection", foreign_keys=[psa_connection_id])
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# Batch tracking (maintenance flows)
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batch_id: Mapped[Optional[uuid.UUID]] = mapped_column(
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UUID(as_uuid=True), nullable=True, index=True
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)
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target_label: Mapped[Optional[str]] = mapped_column(
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String(255), nullable=True
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)
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