Musify/backend/Hosts/Musify.Api/Endpoints/GenreEndpoints.cs

using Mediator;
using Musify.Application.Genres;
using Musify.Application.Genres.Responses;

namespace Musify.Api.Endpoints;

public static class GenreEndpoints
{
    public static IEndpointRouteBuilder MapGenreEndpoints(this IEndpointRouteBuilder app)
    {
        var group = app.MapGroup("/genres")
            .WithTags("Genres");

        group.MapGet("/", GetGenres)
            .WithName("GetGenres")
            .WithSummary("Get the genres that have at least one track, most populated first. Works anonymously")
            .Produces<IReadOnlyList<GenreResponse>>();

        group.MapGet("/available", GetAvailableGenres)
            .WithName("GetAvailableGenres")
            .WithSummary("Get every genre a track can be tagged with, including the genres it cannot be combined with. Works anonymously")
            .Produces<IReadOnlyList<AvailableGenreResponse>>();

        return app;
    }

    private static async Task<IResult> GetAvailableGenres(
        IMediator mediator,
        CancellationToken cancellationToken)
    {
        var result = await mediator.Send(new GetAvailableGenresQuery(), cancellationToken);
        return Results.Ok(result);
    }

    private static async Task<IResult> GetGenres(
        IMediator mediator,
        CancellationToken cancellationToken)
    {
        var result = await mediator.Send(new GetGenresQuery(), cancellationToken);
        return Results.Ok(result);
    }
}