Create app/main.py

app/main.py

@@ -0,0 +1,88 @@
+from fastapi import FastAPI, HTTPException, status
+from typing import List
+from app.models import Task
+from app import database
+
+app = FastAPI(
+    title="To-Do List API",
+    description="API simples para gerenciar tarefas",
+    version="1.0.0"
+)
+
+@app.get("/", tags=["Root"])
+def read_root():
+    """Endpoint raiz da API"""
+    return {
+        "message": "Bem-vindo à To-Do List API!",
+        "docs": "/docs",
+        "redoc": "/redoc"
+    }
+
+# CREATE - Criar nova tarefa
+@app.post(
+    "/tasks/",
+    response_model=Task,
+    status_code=status.HTTP_201_CREATED,
+    tags=["Tasks"]
+)
+def create_task(task: Task):
+    """Cria uma nova tarefa"""
+    return database.create_task(task)
+
+# READ - Listar todas as tarefas
+@app.get(
+    "/tasks/",
+    response_model=List[Task],
+    tags=["Tasks"]
+)
+def get_tasks():
+    """Lista todas as tarefas"""
+    return database.get_all_tasks()
+
+# READ - Buscar tarefa específica por ID
+@app.get(
+    "/tasks/{task_id}",
+    response_model=Task,
+    tags=["Tasks"]
+)
+def get_task(task_id: int):
+    """Busca uma tarefa específica por ID"""
+    task = database.get_task_by_id(task_id)
+    if task is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Tarefa com ID {task_id} não encontrada"
+        )
+    return task
+
+# UPDATE - Atualizar tarefa existente
+@app.put(
+    "/tasks/{task_id}",
+    response_model=Task,
+    tags=["Tasks"]
+)
+def update_task(task_id: int, task: Task):
+    """Atualiza uma tarefa existente"""
+    updated = database.update_task(task_id, task)
+    if updated is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Tarefa com ID {task_id} não encontrada"
+        )
+    return updated
+
+# DELETE - Remover tarefa
+@app.delete(
+    "/tasks/{task_id}",
+    status_code=status.HTTP_204_NO_CONTENT,
+    tags=["Tasks"]
+)
+def delete_task(task_id: int):
+    """Remove uma tarefa"""
+    deleted = database.delete_task(task_id)
+    if not deleted:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Tarefa com ID {task_id} não encontrada"
+        )
+    return None