using BizProcessBLL.Interfaces;
using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using static GB5Shared.GB5Constant.Constant;

namespace BizProcessSL.Endpoints
{
    // Feeds gb4.7mfe's ProcessMapViewer component directly — the response Body is the
    // exact {type,nodes,edges,styles,subgraphs} JSON shape that component already renders,
    // so wiring it up (Phase 3) is a data-source swap, not a parsing-logic change.
    public class GetProcessMap : BaseEndpoint<GetProcessMap.Parameters, ResponseStandardDTO<object>>
    {
        private readonly IBizProcessBLL _BizProcessBLL;

        public GetProcessMap(IBizProcessBLL BizProcessBLL) => _BizProcessBLL = BizProcessBLL;

        public override void Configure()
        {
            Get("/BizProcess/GetProcessMap");
            AllowAnonymous();
        }

        public record Parameters(
            [property: FromHeader] string Login,
            [property: QueryParam] int BizProcessVariantId
        );

        protected override string? GetCacheKey(Parameters req, LoginDTO login)
            => $"BizProcessMap:{login.ClientId}:{req.BizProcessVariantId}";

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            Parameters req, LoginDTO login, CancellationToken ct)
        {
            try
            {
                var data = await _BizProcessBLL.GetProcessMap(req.BizProcessVariantId, login, ct);
                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(data, CacheKeyLevel.CLIENT_LEVEL, login);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(ex, CacheKeyLevel.CLIENT_LEVEL, login, ex.Message, 500);
            }
        }
    }
}