using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using Microsoft.AspNetCore.Mvc;
using RecruitmentBLL.Application;
using static GB5Shared.GB5Constant.Constant;

namespace RecruitmentSL.EndPoints.Application
{
    /// <summary>Thin passthrough to ECP's CommentThread feature (hosted by EngagementHost) via
    /// ApplicationBLL.GetApplicationComments / IEcpIntegrationService.</summary>
    public class GetApplicationComments
        : BaseEndpoint<GetApplicationComments.GetApplicationCommentsParameters, object>
    {
        private readonly IApplicationBLL _ApplicationBLL;

        public GetApplicationComments(IApplicationBLL applicationBLL)
        {
            _ApplicationBLL = applicationBLL;
        }

        public override void Configure()
        {
            Get("/Application/GetApplicationComments");
            // Roles("HR", "Recruiter", "Interviewer") throws 500 here — no host in this repo
            // configures AddAuthentication (HRFinanceHost included; see PayRollSL's
            // GetHRMSDashboard.cs for the same documented, repo-wide gap). AllowAnonymous
            // matches every other endpoint in this SL module today.
            AllowAnonymous();
        }

        public record GetApplicationCommentsParameters(
            [property: QueryParam] int ApplicationId,
            [property: FastEndpoints.FromHeader] string Login
        );

        // Not cached: comments live entirely in ECP's own database (a different process) and
        // Recruitment has no hook to invalidate this key when ECP-side data changes — caching a
        // cross-host proxy read here would risk showing stale comment threads indefinitely.
        protected override string? GetCacheKey(GetApplicationCommentsParameters parameters, LoginDTO loginDTO) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            GetApplicationCommentsParameters parameters,
            LoginDTO loginDTO,
            CancellationToken ct)
        {
            try
            {
                var result = await _ApplicationBLL
                    .GetApplicationComments(parameters.ApplicationId, loginDTO!, ct);

                return await GB5Shared.ResponseStandard.Response
                    .CreateSuccessResponse(
                        result,
                        CacheKeyLevel.NOT_REQUIRED,
                        loginDTO);
            }
            catch (Exception ex)
            {
                return await GB5Shared.ResponseStandard.Response
                    .CreateExceptionError<string>(
                        ex,
                        CacheKeyLevel.NOT_REQUIRED,
                        loginDTO,
                        ex.Message,
                        500);
            }
        }
    }
}