landvex: Fixar och tester klara för alla komponenter

- Datafabrik: Dockerfile fix, agentorkestrering fungerar
- Vision: Identify-modell, FAISS, OCR alla testade
- API: Alla 7 integrationstester passerade
- Upplösare: Entitetsupplösning verifierad

landvex-admin/backend/app/models/billing.py

@@ -0,0 +1,90 @@
+"""Billing and subscription models."""
+from datetime import datetime, date
+from decimal import Decimal
+from enum import Enum
+from uuid import UUID, uuid4
+
+from sqlalchemy import String, ForeignKey, Date, Numeric, JSON
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.database import Base
+
+
+class SubscriptionPlan(Base):
+    __tablename__ = "subscription_plans"
+
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=uuid4)
+    name: Mapped[str] = mapped_column(String(100), nullable=False)
+    slug: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
+    description: Mapped[str | None]
+    price_monthly: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    price_yearly: Mapped[Decimal | None] = mapped_column(Numeric(10, 2))
+    features: Mapped[dict] = mapped_column(JSON, default=dict)
+    limits: Mapped[dict] = mapped_column(JSON, default=dict)
+    is_public: Mapped[bool] = mapped_column(default=True)
+    created_at: Mapped[datetime] = mapped_column(default=datetime.utcnow)
+
+    # Relationships
+    tenants: Mapped[list["Tenant"]] = relationship(back_populates="plan")
+
+    def __repr__(self) -> str:
+        return f"<SubscriptionPlan {self.slug}>"
+
+
+class InvoiceStatus(str, Enum):
+    DRAFT = "draft"
+    SENT = "sent"
+    PAID = "paid"
+    OVERDUE = "overdue"
+    CANCELLED = "cancelled"
+
+
+class Invoice(Base):
+    __tablename__ = "invoices"
+
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=uuid4)
+    tenant_id: Mapped[UUID] = mapped_column(
+        ForeignKey("tenants.id", ondelete="CASCADE"), nullable=False
+    )
+    invoice_number: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
+    period_start: Mapped[date] = mapped_column(Date, nullable=False)
+    period_end: Mapped[date] = mapped_column(Date, nullable=False)
+    amount: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    tax_amount: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    total_amount: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    currency: Mapped[str] = mapped_column(String(3), default="SEK")
+    status: Mapped[InvoiceStatus] = mapped_column(default=InvoiceStatus.DRAFT)
+    paid_at: Mapped[datetime | None]
+    stripe_invoice_id: Mapped[str | None] = mapped_column(String(100))
+    pdf_url: Mapped[str | None]
+    due_date: Mapped[date] = mapped_column(Date, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(default=datetime.utcnow)
+
+    # Relationships
+    tenant: Mapped["Tenant"] = relationship(back_populates="invoices")
+    items: Mapped[list["InvoiceItem"]] = relationship(
+        back_populates="invoice", cascade="all, delete-orphan"
+    )
+
+    def __repr__(self) -> str:
+        return f"<Invoice {self.invoice_number}>"
+
+
+class InvoiceItem(Base):
+    __tablename__ = "invoice_items"
+
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=uuid4)
+    invoice_id: Mapped[UUID] = mapped_column(
+        ForeignKey("invoices.id", ondelete="CASCADE"), nullable=False
+    )
+    description: Mapped[str] = mapped_column(String(255), nullable=False)
+    quantity: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    unit_price: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    amount: Mapped[Decimal] = mapped_column(Numeric(10, 2), nullable=False)
+    metadata: Mapped[dict] = mapped_column(JSON, default=dict)
+
+    # Relationships
+    invoice: Mapped["Invoice"] = relationship(back_populates="items")
+
+    def __repr__(self) -> str:
+        return f"<InvoiceItem {self.description}>"