Add Book schema

schemas/book.py

@@ -0,0 +1,29 @@
+from pydantic import BaseModel, Field
+from datetime import datetime
+
+class BookBase(BaseModel):
+    title: str = Field(..., description="Book title")
+    author: str = Field(..., description="Book author", index=True)
+    description: str | None = Field(None, description="Book description")
+    page_count: int = Field(..., gt=0, description="Number of pages")
+    published_date: datetime = Field(..., description="Publication date")
+    isbn: str = Field(..., description="ISBN number", index=True)
+
+    class Config:
+        orm_mode = True
+
+class BookCreate(BookBase):
+    pass
+
+class BookResponse(BookBase):
+    class Config:
+        schema_extra = {
+            "example": {
+                "title": "The Great Gatsby",
+                "author": "F. Scott Fitzgerald",
+                "description": "A novel about the decadence of the Jazz Age.",
+                "page_count": 180,
+                "published_date": "1925-04-10T00:00:00",
+                "isbn": "978-0743273565"
+            }
+        }