using FastEndpoints;
using FluentValidation;
using Hutopy.Web.Features.Contents.Data;
using Microsoft.EntityFrameworkCore;

namespace Hutopy.Web.Features.Contents.Handlers;

public sealed class GetCreatorByAliasRequest
{
    public required string Name { get; set; }
}

public sealed class GetCreatorByAliasRequestValidator
    : Validator<GetCreatorByAliasRequest>
{
    public GetCreatorByAliasRequestValidator()
    {
        RuleFor(r => r.Name)
            .NotNull().WithMessage("You should specify the Name")
            .NotEmpty().WithMessage("You should specify a valid/not empty Name");
    }
}

public class GetCreatorByAliasHandler(
    ContentDbContext context)
    : Endpoint<GetCreatorByAliasRequest, Creator>
{
    public override void Configure()
    {
        Get("/api/creators/@{Name}");
        Options((o => o.WithTags("Creators")));
        AllowAnonymous();
    }

    public override async Task HandleAsync(
        GetCreatorByAliasRequest req,
        CancellationToken ct)
    {
        var creator = await context
            .Creators
            .SingleOrDefaultAsync(
                c => EF.Functions.Like(c.Name, req.Name),
                cancellationToken: ct);

        if (creator is null) await SendNotFoundAsync(ct);
        else await SendAsync(creator, cancellation: ct);
    }
}