working with login and building inventory

trade-hub/backend/app/schemas.py

@@ -0,0 +1,77 @@
+"""Pydantic request/response models for auth and personal inventory."""
+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel, ConfigDict, Field
+
+from app import config
+
+
+class RegisterRequest(BaseModel):
+    username: str = Field(min_length=3, max_length=32)
+    password: str = Field(min_length=8, max_length=128)
+
+
+class LoginRequest(BaseModel):
+    username: str = Field(min_length=1, max_length=32)
+    password: str = Field(min_length=1, max_length=128)
+
+
+class UserOut(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    username: str
+    created_at: datetime
+
+
+class AuthResponse(BaseModel):
+    user: UserOut
+
+
+class InventoryAddRequest(BaseModel):
+    class_name: str = Field(min_length=1, max_length=255)
+    quantity: int = Field(default=1, ge=1, le=config.MAX_QUANTITY)
+    notes: str = Field(default="", max_length=config.MAX_NOTES_LENGTH)
+
+
+class InventoryPatchRequest(BaseModel):
+    quantity: int | None = Field(default=None, ge=1, le=config.MAX_QUANTITY)
+    notes: str | None = Field(default=None, max_length=config.MAX_NOTES_LENGTH)
+
+
+class InventoryEntryOut(BaseModel):
+    class_name: str
+    name: str
+    category: str | None
+    type: str | None
+    size: int | None
+    grade: Any | None = None
+    manufacturer: dict | None
+    quantity: int
+    notes: str
+    # False when the catalog no longer contains the referenced item (e.g. after
+    # a dataset refresh). The row is preserved rather than silently deleted.
+    available: bool
+    created_at: datetime
+    updated_at: datetime
+
+
+class InventoryPage(BaseModel):
+    total: int
+    page: int
+    page_size: int
+    total_pages: int
+    items: list[InventoryEntryOut]
+
+
+class InventorySummary(BaseModel):
+    items: int
+    quantity: int
+    categories: dict[str, int]
+    unavailable: int
+
+
+class InventoryAddResponse(BaseModel):
+    entry: InventoryEntryOut
+    created: bool