using FastEndpoints;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.DTO.Framework.ResponseStandard;
using GB5Shared.FastEndPoint;
using RecruitmentBLL.Referral;
using RecruitmentDAL.DTO.Referral;
using static GB5Shared.GB5Constant.Constant;

namespace RecruitmentSL.EndPoints.Referral
{
    // An employee submitting a referral for someone they know — internal GB5 user, already
    // authenticated by the normal login flow, so this is a plain endpoint (no FLS token-link
    // bridge; that's reserved for external/unauthenticated respondents elsewhere in this module).
    // CandidateId must already resolve to an existing Candidate — see ReferralDTO's class doc
    // comment: the caller resolves/creates the Candidate first via the existing
    // Candidate/GetCandidateByEmail + Candidate/SaveCandidate endpoints (Source=4/Referral).
    public class SaveReferral : BaseEndpoint<SaveReferral.Parameters, ResponseStandardDTO<object>>
    {
        private readonly IReferralBLL _ReferralBLL;

        public SaveReferral(IReferralBLL referralBLL)
        {
            _ReferralBLL = referralBLL;
        }

        public override void Configure()
        {
            Post("/Referral/SaveReferral");
            AllowAnonymous();
        }

        public record Parameters(
            [property: FastEndpoints.FromHeader] string Login,
            [property: FastEndpoints.FromBody] ReferralDTO ReferralDTO
        );

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

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