Add models for CRM entities: Activity, Contact, Deal, Organization, OrganizationMember, Task; update User model

app/models/contact.py

@@ -0,0 +1,49 @@
+"""Contact ORM model and schemas."""
+from __future__ import annotations
+
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict, EmailStr
+from sqlalchemy import DateTime, ForeignKey, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.models.base import Base
+
+
+class Contact(Base):
+    """Represents a CRM contact belonging to an organization."""
+
+    __tablename__ = "contacts"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    organization_id: Mapped[int] = mapped_column(ForeignKey("organizations.id", ondelete="CASCADE"))
+    owner_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="RESTRICT"))
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    email: Mapped[str | None] = mapped_column(String(320), nullable=True)
+    phone: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), nullable=False
+    )
+
+    organization = relationship("Organization", back_populates="contacts")
+    owner = relationship("User", back_populates="owned_contacts")
+    deals = relationship("Deal", back_populates="contact")
+
+
+class ContactBase(BaseModel):
+    organization_id: int
+    owner_id: int
+    name: str
+    email: EmailStr | None = None
+    phone: str | None = None
+
+
+class ContactCreate(ContactBase):
+    pass
+
+
+class ContactRead(ContactBase):
+    id: int
+    created_at: datetime
+
+    model_config = ConfigDict(from_attributes=True)