using PostFundManagement.Application.Abstractions.Services;
using PostFundManagement.Application.Extensions;
using PostFundManagement.Domain.Abstractions;
using PostFundManagement.Domain.Errors;
using PostFundManagement.Domain.Extensions;
using PostFundManagement.Domain.Models;

namespace PostFundManagement.Api.Endpoints.Projects;

[ApiVersionTarget(1)]
public sealed class GetOutcomeEndpoint : IEndpoint
{
    public void Map(IEndpointRouteBuilder builder)
    {
        builder.MapGet("api/projects/outcome/{outcomeId}", HandleGetAsync)
            .WithDescription("Gets a specific project outcome")
            .RequireAuthorization(Constants.MainScope)
            .WithName(typeof(GetOutcomeEndpoint).ToEndpointName())
            .MapToApiVersion(new ApiVersion(1))
            .Produces<Outcome>(StatusCodes.Status200OK)
            .Produces(StatusCodes.Status403Forbidden)
            .Produces(StatusCodes.Status401Unauthorized)
            .Produces<Problems>(StatusCodes.Status404NotFound)
            .Produces<Problems>(StatusCodes.Status500InternalServerError)
            .WithTags(EndpointTags.Projects)
            .CacheOutput();

        builder.MapGet("api/projects/outcomes/single/{outcomeId}", HandleGetAsync)
            .WithDescription("Gets a specific project outcome")
            .RequireAuthorization(Constants.MainScope)
            .WithName(typeof(GetOutcomeEndpoint).ToEndpointName("Single"))
            .MapToApiVersion(new ApiVersion(1))
            .Produces<Outcome>(StatusCodes.Status200OK)
            .Produces(StatusCodes.Status403Forbidden)
            .Produces(StatusCodes.Status401Unauthorized)
            .Produces<Problems>(StatusCodes.Status404NotFound)
            .Produces<Problems>(StatusCodes.Status500InternalServerError)
            .WithTags(EndpointTags.Projects)
            .CacheOutput();
    }

    private static async Task<IResult> HandleGetAsync(string outcomeId, IProjectService service,
        CancellationToken cancellationToken = default) =>
        await service.GetOutcomeAsync(outcomeId, cancellationToken) switch
        {
            { IsSuccess: true, Value: var outcome } => Results.Ok(outcome),
            var r when r.HasError<IdDecodeError>() => Results.Forbid(),
            var r when r.HasError<NotFoundError>() => Results.NotFound(r.Errors.ToProblems()),
            var r => Results.InternalServerError(r.Errors.ToProblems())
        };
}