Modelli per flusso valutazione

backend/app/models/valuation.py

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+import enum
+from datetime import datetime, date, timezone
+from decimal import Decimal
+from sqlalchemy import (
+    String, Boolean, Date, DateTime, DECIMAL, Integer, Text,
+    ForeignKey, Enum as SAEnum
+)
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.core.database import Base
+
+
+class ValuationStatus(str, enum.Enum):
+    bozza = "bozza"
+    inviata = "inviata"
+    in_lavorazione = "in_lavorazione"
+    completata = "completata"
+    vinta = "vinta"
+    persa = "persa"
+
+
+class ValuationPriority(str, enum.Enum):
+    contratto = "contratto"
+    preventivo = "preventivo"
+    valutazione = "valutazione"
+
+
+class RetakeRegime(str, enum.Enum):
+    nuovo = "nuovo"
+    usato = "usato"
+
+
+class Valuation(Base):
+    __tablename__ = "valuations"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    plate: Mapped[str] = mapped_column(String(10), ForeignKey("vehicle_registry.plate"), nullable=False, index=True)
+    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    group_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("groups.id"))
+    motornet_code: Mapped[str | None] = mapped_column(String(20), ForeignKey("vehicle_versions.motornet_code"))
+    mileage: Mapped[int | None] = mapped_column(Integer)
+    retake_regime: Mapped[RetakeRegime | None] = mapped_column(SAEnum(RetakeRegime))
+    expected_return_date: Mapped[date | None] = mapped_column(Date)
+    interest_fuel: Mapped[str | None] = mapped_column(String(50))
+    priority: Mapped[ValuationPriority] = mapped_column(
+        SAEnum(ValuationPriority), default=ValuationPriority.valutazione
+    )
+    notes: Mapped[str | None] = mapped_column(Text)
+    status: Mapped[ValuationStatus] = mapped_column(
+        SAEnum(ValuationStatus), default=ValuationStatus.bozza, index=True
+    )
+    final_value: Mapped[Decimal | None] = mapped_column(DECIMAL(10, 2))
+    evaluator_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("users.id"))
+    evaluator_notes: Mapped[str | None] = mapped_column(Text)
+    is_frozen: Mapped[bool] = mapped_column(Boolean, default=False)
+    priority_rank: Mapped[int] = mapped_column(Integer, default=3)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        default=lambda: datetime.now(timezone.utc),
+        onupdate=lambda: datetime.now(timezone.utc),
+    )
+
+    photos: Mapped[list["ValuationPhoto"]] = relationship("ValuationPhoto", back_populates="valuation")
+    comments: Mapped[list["ValuationComment"]] = relationship("ValuationComment", back_populates="valuation")
+    history: Mapped[list["ValuationHistory"]] = relationship("ValuationHistory", back_populates="valuation")
+    contracts: Mapped[list["ValuationContract"]] = relationship("ValuationContract", back_populates="valuation")
+    motornet_valuations: Mapped[list["MotornetValuation"]] = relationship("MotornetValuation", back_populates="valuation")
+
+
+class ValuationPhoto(Base):
+    __tablename__ = "valuation_photos"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    valuation_id: Mapped[int] = mapped_column(Integer, ForeignKey("valuations.id"), nullable=False)
+    filename: Mapped[str] = mapped_column(String(255), nullable=False)
+    storage_path: Mapped[str] = mapped_column(String(500), nullable=False)
+    uploaded_by: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    uploaded_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+
+    valuation: Mapped["Valuation"] = relationship("Valuation", back_populates="photos")
+
+
+class ValuationComment(Base):
+    __tablename__ = "valuation_comments"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    valuation_id: Mapped[int] = mapped_column(Integer, ForeignKey("valuations.id"), nullable=False)
+    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    content: Mapped[str] = mapped_column(Text, nullable=False)
+    visible_to_all: Mapped[bool] = mapped_column(Boolean, default=True)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+
+    valuation: Mapped["Valuation"] = relationship("Valuation", back_populates="comments")
+
+
+class ValuationHistory(Base):
+    __tablename__ = "valuation_history"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    valuation_id: Mapped[int] = mapped_column(Integer, ForeignKey("valuations.id"), nullable=False)
+    changed_by: Mapped[int] = mapped_column(Integer, ForeignKey("users.id"), nullable=False)
+    field_name: Mapped[str] = mapped_column(String(100), nullable=False)
+    old_value: Mapped[str | None] = mapped_column(Text)
+    new_value: Mapped[str | None] = mapped_column(Text)
+    changed_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+
+    valuation: Mapped["Valuation"] = relationship("Valuation", back_populates="history")