topic11.py

# Dependency Injection
# . What is Depends()
# . Reusable logic
# . Auth example intro
# . Interview Questions


from fastapi import FastAPI, Depends, Header, HTTPException

app = FastAPI()


# def common_logic():
# 	return{
# 		"message":"Common Logic Executed"
# 	}

# @app.get("/home")
# def home(data=Depends(common_logic)):
# 	return data




# Reusable Logic -
# def get_current_user():
# 	return{
# 		"user":"Anupam Sharma"
# 	}
# @app.get("/profile")
# def profile(user = Depends(get_current_user)):
# 	return user

# @app.get("/dashboard")
# def dashboard(user = Depends(get_current_user)):
# 	return user




# Auth example intro-
def verify_token(token: str = Header(None)):
	if token != "mysecrettoken":
		raise HTTPException(
			status_code=401,
			detail = "Unauthorized access denied"
		)
	return {
		"user":"Authorized User"
	}

@app.get("/secure_data")
def secure_data(user = Depends(verify_token)):
	return{
		"message": "Secure Data Accessed",
		"user":user 
	}