Initial Commit

app/routers/books.py

@@ -0,0 +1,99 @@
+from datetime import date
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import text
+from app.database import get_db
+
+router = APIRouter(prefix="/books", tags=["Books"])
+
+
+@router.get("/")
+async def get_all_books(db: AsyncSession = Depends(get_db)):
+    result = await db.execute(text("""
+        SELECT b.id, b.title, b.genre, b.published, a.name AS author
+        FROM books b
+        JOIN authors a ON a.id = b.author_id
+        ORDER BY b.title
+    """))
+    return result.mappings().all()
+
+
+@router.get("/{book_id}")
+async def get_book(book_id: int, db: AsyncSession = Depends(get_db)):
+    result = await db.execute(
+        text("""
+            SELECT b.*, a.name AS author_name
+            FROM books b
+            JOIN authors a ON a.id = b.author_id
+            WHERE b.id = :id
+        """),
+        {"id": book_id}
+    )
+    book = result.mappings().one_or_none()
+    if not book:
+        raise HTTPException(status_code=404, detail="Book not found")
+    return book
+
+
+@router.post("/", status_code=201)
+async def create_book(
+    title: str, author_id: int, genre: str = None,
+    published: date = None, description: str = None,
+    db: AsyncSession = Depends(get_db)
+):
+    # Check author exists
+    result = await db.execute(
+        text("SELECT id FROM authors WHERE id = :id"), {"id": author_id}
+    )
+    if not result.one_or_none():
+        raise HTTPException(status_code=404, detail="Author not found")
+
+    await db.execute(
+        text("""
+            INSERT INTO books (title, author_id, genre, published, description)
+            VALUES (:title, :author_id, :genre, :published, :description)
+        """),
+        {"title": title, "author_id": author_id, "genre": genre,
+         "published": published, "description": description}
+    )
+    await db.commit()
+    return {"message": f"Book '{title}' created"}
+
+
+@router.put("/{book_id}")
+async def update_book(
+    book_id: int, title: str = None, genre: str = None,
+    description: str = None, db: AsyncSession = Depends(get_db)
+):
+    result = await db.execute(
+        text("SELECT id FROM books WHERE id = :id"), {"id": book_id}
+    )
+    if not result.one_or_none():
+        raise HTTPException(status_code=404, detail="Book not found")
+
+    await db.execute(
+        text("""
+            UPDATE books
+            SET title       = COALESCE(:title, title),
+                genre       = COALESCE(:genre, genre),
+                description = COALESCE(:description, description)
+            WHERE id = :id
+        """),
+        {"id": book_id, "title": title, "genre": genre, "description": description}
+    )
+    await db.commit()
+    return {"message": "Book updated"}
+
+
+@router.delete("/{book_id}", status_code=204)
+async def delete_book(book_id: int, db: AsyncSession = Depends(get_db)):
+    result = await db.execute(
+        text("SELECT id FROM books WHERE id = :id"), {"id": book_id}
+    )
+    if not result.one_or_none():
+        raise HTTPException(status_code=404, detail="Book not found")
+
+    await db.execute(
+        text("DELETE FROM books WHERE id = :id"), {"id": book_id}
+    )
+    await db.commit()