using System;

namespace RecruitmentDAL.DTO.CandidateConversion
{
    // Request shape for RecruitmentBLL.CandidateConversion.ICandidateConversionBLL
    // .ConvertCandidateToEmployeeAsync — the Candidate->Employee "final joining event" (Phase 3
    // of the Recruitment build-out plan). CandidateDTO (name/email/phone) plus the identity of
    // the specific hired Application together carry everything the pipeline itself already
    // knows; everything below is what PayRollBLL.Employee.EmployeeBLL.SaveEmployee genuinely
    // needs that a Candidate record has no way to know on its own — an explicit, HR-supplied
    // set, not something this conversion should guess/auto-fill. See CandidateConversionBLL's
    // class doc comment for exactly which MEMPLOYEE columns were found to be NOT NULL + FK-
    // enforced (i.e. truly mandatory, not just NOT NULL-with-a-zero-default) during this
    // DTO's design, and for the ones deliberately left out (defaulted to 0/HR completes later
    // via the standard Employee edit screen).
    public class CandidateConversionRequestDTO
    {
        // The Candidate being converted. Must not already carry a real EmployeeId (CandidateDTO
        // .EmployeeId defaults to -1 — "not yet converted" — see that DTO's doc comment).
        public int CandidateId { get; set; } = -1;

        // The specific hired Application (Candidate x JobRequisition) that authorizes this
        // conversion — needed both to validate the pipeline is genuinely at a Hired-terminal
        // stage (see CandidateConversionBLL) and to resolve JobRequisitionId for the
        // requester-notification step (IEcpIntegrationService.NotifyRequesterOnHireAsync).
        public int ApplicationId { get; set; } = -1;

        // ── HR-supplied, MEMPLOYEE NOT NULL + FK-enforced (verified against
        //    DB/Migrations/20260824_FullBaseSchema_SqlServer/chunk_003_of_016.sql — no sensible
        //    zero-default exists for any of these four; SaveEmployee will hit a live FK
        //    violation without them) ──
        public int WorkOUId { get; set; } = -1;            // FK MORGANIZATIONUNIT
        public int DepartmentId { get; set; } = -1;        // FK MDEPARTMENT
        public int CostCenterId { get; set; } = -1;         // FK MCOSTCENTER — found during this
                                                             // task's verification pass; the prior
                                                             // research pass had only flagged
                                                             // WorkOUId/DepartmentId as FK-enforced.
        public int EmployeeCodeDefineId { get; set; } = -1; // -> EmployeeDTO.CodeDefineId via
                                                             // CodeGeneration.AssignCode (FK MCODEDEFINE)

        // ── HR-supplied by business necessity even though NOT FK-enforced at the DB level
        //    (DesignationId is a "GCM"/generic-code-master column with no hard FK — but a
        //    converted hire with no Designation is meaningless data, so it is still required
        //    here) ──
        public int DesignationId { get; set; } = -1;

        // Business-critical: this call IS "the final joining event" — the date the candidate
        // actually joins as an employee. SaveEmployee's own DB default (GETDATE()) would silently
        // record "today" for every conversion regardless of the real joining date, so this is
        // required rather than left to that default.
        public DateTime? DateOfJoining { get; set; }
    }
}