Add Book schema

schemas/book.py

@@ -0,0 +1,19 @@
+from pydantic import BaseModel, Field
+from typing import Optional
+
+# Base schema
+class BookBase(BaseModel):
+    title: str = Field(..., description="Book title")
+    author: str = Field(..., description="Book author")
+    description: Optional[str] = Field(None, description="Book description")
+    pages: Optional[int] = Field(None, ge=1, description="Number of pages")
+    published_year: Optional[int] = Field(None, ge=1900, le=2023, description="Year of publication")
+
+# Create schema
+class BookCreate(BookBase):
+    pass
+
+# Response schema
+class Book(BookBase):
+    class Config:
+        orm_mode = True