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

namespace RecruitmentSL.EndPoints.Application
{
    /// <summary>Thin passthrough to ECP's CommentThread feature (hosted by EngagementHost) via
    /// ApplicationBLL.PostApplicationComment / IEcpIntegrationService — no CommentThread data is
    /// persisted in Recruitment's own schema.</summary>
    public class PostApplicationComment
        : BaseEndpoint<PostApplicationComment.PostApplicationCommentParameters, ResponseStandardDTO<object>>
    {
        private readonly IApplicationBLL _ApplicationBLL;

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

        public override void Configure()
        {
            Post("/Application/PostApplicationComment");
            // 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 PostApplicationCommentRequestDTO(
            int ApplicationId,
            string CommentText,
            List<int>? MentionedUserIds
        );

        public record PostApplicationCommentParameters(
            [property: FastEndpoints.FromHeader] string Login,
            [property: FastEndpoints.FromBody] PostApplicationCommentRequestDTO Comment
        );

        protected override string? GetCacheKey(PostApplicationCommentParameters req, LoginDTO login) => null;

        protected override async Task<ResponseStandardDTO<object>> ExecuteAsync(
            PostApplicationCommentParameters req,
            LoginDTO LoginDTO,
            CancellationToken ct)
        {
            try
            {
                var result = await _ApplicationBLL.PostApplicationComment(
                    req.Comment.ApplicationId,
                    req.Comment.CommentText,
                    req.Comment.MentionedUserIds ?? new List<int>(),
                    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);
            }
        }
    }
}