Structs Exercise

Create a contract that adheres to the following specifications.

​

Contract

Create a contract called GarageManager. Add the following in storage:

• A public mapping called garage to store a list of Cars (described below), indexed by address

Add the following types and functions.

​

Car Struct

Implement a struct called Car. It should store the following properties:

• make
• model
• color
• numberOfDoors

​

Add Car Garage

Add a function called addCar that adds a car to the user’s collection in the garage. It should:

• Use msg.sender to determine the owner
• Accept arguments for make, model, color, and number of doors, and use those to create a new instance of Car
• Add that Car to the garage under the user’s address

​

Get All Cars for the Calling User

Add a function called getMyCars. It should return an array with all of the cars owned by the calling user.

​

Get All Cars for Any User

Add a function called getUserCars. It should return an array with all of the cars for any given address.

​

Update Car

Add a function called updateCar. It should accept a uint for the index of the car to be updated, and arguments for all of the Car types.

If the sender doesn’t have a car at that index, it should revert with a custom error BadCarIndex and the index provided.

Otherwise, it should update that entry to the new properties.

​

Reset My Garage

Add a public function called resetMyGarage. It should delete the entry in garage for the sender.

​

Submit your Contract and Earn an NFT Badge! (BETA)