Rust Models
The server developer was nice enough to share these models with you, to ease development.
There are two basic structures here, a ToDo "struct" and a Message "enum".
Before we go over the details of these models let's go over what "struct" and "enum" are in Rust.
Structs are Rust's way of defining objects. When defining a struct you first define the fields/properties, if you need to add any functions or methods you would do that in a separate code block called an impl block.
Enums in rust work a bit differently than in most languages, the biggest difference
being the ability to associate dynamic values with cases. This is useful when you have a case that is closely tied to some data, you'll see what I mean when we get to the Message enum. The other big difference is that enums can have their own impl blocks, meaning they can have functions/methods too!
With that out of the way, lets take a look at what the server developer provided.