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
{
    // Phase 7 -- "where is this document right now" overlay on the process map.
    public class GetProcessInstanceTrace : BaseEndpoint<GetProcessInstanceTrace.Parameters, ResponseStandardDTO<object>>
    {
        private readonly IBizProcessBLL _BizProcessBLL;

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

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

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

        // Live document-position data, not the process definition itself -- never cached.
        protected override string? GetCacheKey(Parameters req, LoginDTO login) => null;

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