霖雨寺

app/routers/todos.py

@@ -0,0 +1,68 @@
+import sqlite3
+from typing import List
+
+from fastapi import APIRouter, HTTPException, status
+
+from app.database import Database
+from app.schemas import Todo, TodoCreate, TodoUpdate
+
+
+router = APIRouter(prefix="/todos", tags=["todos"])
+
+
+def row_to_todo(row: sqlite3.Row) -> Todo:
+    return Todo(id=row["id"], title=row["title"], done=bool(row["done"]))
+
+
+@router.get("", response_model=List[Todo])
+def list_todos(db: Database) -> List[Todo]:
+    rows = db.execute("SELECT id, title, done FROM todos ORDER BY id").fetchall()
+    return [row_to_todo(row) for row in rows]
+
+
+@router.post("", response_model=Todo, status_code=status.HTTP_201_CREATED)
+def create_todo(payload: TodoCreate, db: Database) -> Todo:
+    cursor = db.execute(
+        "INSERT INTO todos (title, done) VALUES (?, ?)",
+        (payload.title, 0),
+    )
+    db.commit()
+    return Todo(id=cursor.lastrowid, title=payload.title, done=False)
+
+
+@router.get("/{todo_id}", response_model=Todo)
+def get_todo(todo_id: int, db: Database) -> Todo:
+    row = db.execute(
+        "SELECT id, title, done FROM todos WHERE id = ?",
+        (todo_id,),
+    ).fetchone()
+    if row is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Todo not found")
+    return row_to_todo(row)
+
+
+@router.patch("/{todo_id}", response_model=Todo)
+def update_todo(todo_id: int, payload: TodoUpdate, db: Database) -> Todo:
+    todo = get_todo(todo_id, db)
+    updates = payload.model_dump(exclude_unset=True)
+
+    if not updates:
+        return todo
+
+    title = updates.get("title", todo.title)
+    done = updates.get("done", todo.done)
+    db.execute(
+        "UPDATE todos SET title = ?, done = ? WHERE id = ?",
+        (title, int(done), todo_id),
+    )
+    db.commit()
+
+    return get_todo(todo_id, db)
+
+
+@router.delete("/{todo_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_todo(todo_id: int, db: Database) -> None:
+    cursor = db.execute("DELETE FROM todos WHERE id = ?", (todo_id,))
+    db.commit()
+    if cursor.rowcount == 0:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Todo not found")