1.1. GameStore Dto

namespace GameStore.Api.Dtos;

// A DTO is a contract between the client and the server since it represents
// a shared agreement about how data will be transferred and used

public record GameDto
{
    public int Id { get; init; }
    public string Name { get; init; } = string.Empty;
    public string Genre { get; init; } = string.Empty;
    public decimal Price { get; init; }
    public DateOnly ReleaseDate { get; init; }
}

namespace GameStore.Api.Dtos;

// A DTO is a contract between the client and the server since it represents
// a shared agreement about how data will be transferred and used

public record GameDto(
    int Id,
    string Name,
    string Genre,
    decimal Price,
    DateOnly ReleaseDate
);

1.2. How to Write an Endpoint?

• First, write a DTO.
• Second, write the endpoint

namespace GameStore.Api.Dtos;

public record CreateGameDto(
    string Name,
    string Genre,
    decimal Price,
    DateOnly ReleaseDate
);

app.MapPost("/games", (CreateGameDto newGame) =>
{
    GameDto game = new(
        games.Count + 1,
        newGame.Name,
        newGame.Genre,
        newGame.Price,
        newGame.ReleaseDate
    );

    games.Add(game);

    return Results.CreatedAtRoute("GetGame", new {id = game.Id}, game);
});

1.2.1. PUT

app.MapPut("/games/{id}", (int id, UpdateGameDto updatedGame) =>
{
    var index = games.FindIndex(game => game.Id == id);

    games[index] = new GameDto(
        id,
        updatedGame.Name,
        updatedGame.Genre,
        updatedGame.Price,
        updatedGame.ReleaseDate
    );

    return Results.NoContent();
});