Add Book schema

schemas/book.py

@@ -0,0 +1,51 @@
+from pydantic import BaseModel, Field
+
+# Base Schema
+class BookBase(BaseModel):
+    title: str = Field(..., description="Book title")
+    author: str = Field(..., description="Book author")
+    description: str = Field(None, description="Book description")
+    published_year: int = Field(None, description="Year the book was published")
+
+    class Config:
+        schema_extra = {
+            "example": {
+                "title": "The Great Gatsby",
+                "author": "F. Scott Fitzgerald",
+                "description": "A novel about the decadence of the Jazz Age.",
+                "published_year": 1925
+            }
+        }
+
+# Create Schema
+class BookCreate(BookBase):
+    isbn: str = Field(..., description="Book ISBN number")
+
+    class Config:
+        schema_extra = {
+            "example": {
+                "title": "To Kill a Mockingbird",
+                "author": "Harper Lee",
+                "description": "A classic novel about racial injustice.",
+                "published_year": 1960,
+                "isbn": "978-0060935467"
+            }
+        }
+
+# Response Schema
+class Book(BookBase):
+    id: int = Field(..., description="Book ID")
+    isbn: str = Field(..., description="Book ISBN number")
+
+    class Config:
+        orm_mode = True
+        schema_extra = {
+            "example": {
+                "id": 1,
+                "title": "1984",
+                "author": "George Orwell",
+                "description": "A dystopian novel about totalitarianism.",
+                "published_year": 1949,
+                "isbn": "978-0451524935"
+            }
+        }