Initial commit: Ballet Production Suite ERP/CRM foundation

backend/models.py

@@ -0,0 +1,93 @@
+from datetime import datetime
+from typing import List, Optional
+from sqlmodel import Field, SQLModel, Relationship
+
+# --- User & Auth ---
+class User(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    username: str = Field(index=True, unique=True)
+    hashed_password: str
+    is_active: bool = Field(default=True)
+    is_admin: bool = Field(default=False)
+
+# --- Inventory & Materials ---
+class Material(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    name: str = Field(index=True)
+    description: Optional[str] = None
+    unit: str  # e.g., "meters", "units", "grams"
+    stock_quantity: float = Field(default=0.0)
+    reorder_level: float = Field(default=0.0)
+    cost_per_unit: float = Field(default=0.0)
+
+# --- Products ---
+class Product(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    name: str = Field(index=True)
+    sku: str = Field(index=True, unique=True)
+    description: Optional[str] = None
+    base_price: float = Field(default=0.0)
+    estimated_time_hours: float = Field(default=0.0)
+    
+    # Relationships
+    orders: List["OrderProductLink"] = Relationship(back_populates="product")
+    materials: List["ProductMaterialLink"] = Relationship(back_populates="product")
+
+class ProductMaterialLink(SQLModel, table=True):
+    product_id: Optional[int] = Field(default=None, foreign_key="product.id", primary_key=True)
+    material_id: Optional[int] = Field(default=None, foreign_key="material.id", primary_key=True)
+    quantity_required: float
+    
+    product: Product = Relationship(back_populates="materials")
+    material: Material = Relationship()
+
+# --- CRM ---
+class Client(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    full_name: str = Field(index=True)
+    email: Optional[str] = None
+    phone: Optional[str] = None
+    address: Optional[str] = None
+    
+    # Measurements (as a JSON or separate fields, keeping it simple for now)
+    measurements: Optional[str] = None # Or use a JSON type if supported better
+    
+    orders: List["Order"] = Relationship(back_populates="client")
+
+# --- Orders & Production ---
+class OrderStatus(str):
+    QUOTATION = "Quotation"
+    PENDING = "Pending"
+    IN_PRODUCTION = "In Production"
+    SHIPPED = "Shipped"
+    DELIVERED = "Delivered"
+    CANCELLED = "Cancelled"
+
+class Order(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    client_id: int = Field(foreign_key="client.id")
+    order_date: datetime = Field(default_factory=datetime.utcnow)
+    status: str = Field(default=OrderStatus.QUOTATION)
+    total_amount: float = Field(default=0.0)
+    notes: Optional[str] = None
+    
+    client: Client = Relationship(back_populates="orders")
+    products: List["OrderProductLink"] = Relationship(back_populates="order")
+
+class OrderProductLink(SQLModel, table=True):
+    order_id: Optional[int] = Field(default=None, foreign_key="order.id", primary_key=True)
+    product_id: Optional[int] = Field(default=None, foreign_key="product.id", primary_key=True)
+    quantity: int = Field(default=1)
+    customizations: Optional[str] = None
+    
+    order: Order = Relationship(back_populates="products")
+    product: Product = Relationship(back_populates="orders")
+
+class ProductionStep(SQLModel, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    order_id: int = Field(foreign_key="order.id")
+    step_name: str # e.g., "Corte", "Confección", "Terminado"
+    status: str = Field(default="Pending") # Pending, In Progress, Completed
+    assigned_to: Optional[int] = Field(default=None, foreign_key="user.id")
+    started_at: Optional[datetime] = None
+    completed_at: Optional[datetime] = None