using PostFundManagement.Application.Abstractions.Services;
using PostFundManagement.Application.Extensions;
using PostFundManagement.Domain.Abstractions;
using PostFundManagement.Domain.Errors;
using PostFundManagement.Domain.Extensions;
using Problems = Microsoft.AspNetCore.Mvc.ProblemDetails;

namespace PostFundManagement.Api.Endpoints.Governance;

[ApiVersionTarget(1)]
public sealed class GetProgrammeValueEndpoint : IEndpoint
{
    public void Map(IEndpointRouteBuilder builder)
    {
        builder.MapGet("api/governance/programmes/{programmeId}/value", async (string programmeId, IGovernanceService service,
            CancellationToken cancellationToken = default) =>
                await service.GetProgrammeValueAsync(programmeId, cancellationToken) switch
                {
                    { IsSuccess: true, Value: var amount } => Results.Ok(amount),
                    var r when r.HasError<IdDecodeError>() => Results.Forbid(),
                    var r => Results.InternalServerError(r.Errors.ToProblems())
                })
            .WithDescription("Calculates and returns a programme's total project budget value")
            .RequireAuthorization(Constants.MainScope)
            .WithName(typeof(GetProgrammeValueEndpoint).ToEndpointName())
            .MapToApiVersion(new ApiVersion(1))
            .Produces<decimal>(StatusCodes.Status200OK)
            .Produces(StatusCodes.Status403Forbidden)
            .Produces(StatusCodes.Status401Unauthorized)
            .Produces<Problems>(StatusCodes.Status400BadRequest)
            .Produces<Problems>(StatusCodes.Status500InternalServerError)
            .WithTags(EndpointTags.Governance)
            .CacheOutput();
    }
}