namespace EntitlementDAL.DTOs;

/// <summary>Who a subject-type/subject-id pair on LAGREEMENTACCEPTANCE resolves against.
/// Prospect/Customer both key SubjectId off the same central MCLIENT.ClientId — kept as two
/// distinct values (rather than reusing Prospect throughout) purely so a real audit read can
/// tell "accepted at signup" apart from "accepted at the moment of paying" without inspecting
/// CorrelationKey text. Vendor/Partner/Bidder are reserved for CLM's future bilateral-agreement
/// scope (tracker §51) — LocalAgreementConsentProvider (Phase 0) only ever writes
/// Prospect/ClientAdmin/EndUser/Customer.</summary>
public enum AgreementSubjectType : byte
{
    Prospect   = 0,
    ClientAdmin = 1,
    EndUser    = 2,
    Vendor     = 3,
    Partner    = 4,
    Bidder     = 5,
    /// <summary>The central account at the moment of a real commercial transaction (subscription
    /// purchase/upgrade/renewal payment) — tracker §51.10's own "buying" consent gate.</summary>
    Customer   = 6,
}

/// <summary>How a subject indicated acceptance. WetSignature/ESignature/CounterSignature are
/// reserved for CLM's future real e-signature integration (tracker §51.3 Phase 4) — nothing
/// built in this pass can ever produce those values.</summary>
public enum AgreementAcceptanceMethod : byte
{
    Checkbox        = 0,
    Clickwrap       = 1,
    WetSignature    = 2,
    ESignature      = 3,
    CounterSignature = 4,
}

/// <summary>MAGREEMENTVERSION.VERSIONSTATUS — immutable once Published (BLL-enforced), mirrors
/// the same rule this engagement already enforces on SW.MSWUPGRADEPACKAGE.</summary>
public enum AgreementVersionStatus : byte
{
    Draft      = 0,
    Published  = 1,
    Superseded = 2,
    Retired    = 3,
}

public class AgreementTypeDTO
{
    public int    AgreementTypeId              { get; set; }
    public string TypeCode                     { get; set; } = string.Empty;
    public string TypeName                     { get; set; } = string.Empty;
    public bool   RequiresIndividualAcceptance { get; set; }

    public short    Version      { get; set; }
    public byte     Status       { get; set; } = 1;
    public int      SortOrder    { get; set; }
    public int      CreatedById  { get; set; }
    public DateTime CreatedOn    { get; set; }
    public int      ModifiedById { get; set; }
    public DateTime ModifiedOn   { get; set; }
    public byte     SourceType   { get; set; }
}

public class AgreementVersionDTO
{
    public int     AgreementVersionId { get; set; }
    public int     AgreementTypeId    { get; set; }
    public string  VersionLabel       { get; set; } = string.Empty;
    public string? JurisdictionCode   { get; set; }
    public int     LanguageId         { get; set; } = -1;
    public string? ContentRef         { get; set; }
    public string? ContentHash        { get; set; }
    public DateTime EffectiveFrom     { get; set; }
    public byte     VersionStatus     { get; set; }

    // Reserved for CLM's future bilateral-agreement scope — unused/unread by anything built
    // in this pass (see the migration's own header comment).
    public byte?    CounterpartyType  { get; set; }
    public int?     CounterpartyRef   { get; set; }

    public short    Version      { get; set; }
    public byte     Status       { get; set; } = 1;
    public int      SortOrder    { get; set; }
    public int      CreatedById  { get; set; }
    public DateTime CreatedOn    { get; set; }
    public int      ModifiedById { get; set; }
    public DateTime ModifiedOn   { get; set; }
    public byte     SourceType   { get; set; }
}

/// <summary>One append-only row per acceptance — never updated after insert.</summary>
public class AgreementAcceptanceDTO
{
    public int      AgreementAcceptanceId { get; set; }
    public byte      SubjectType          { get; set; }
    public int       SubjectId            { get; set; }
    public int       AgreementVersionId   { get; set; }
    public DateTime  AcceptedOn           { get; set; }
    public string?   IpAddress            { get; set; }
    public string?   UserAgent            { get; set; }
    public byte      AcceptanceMethod     { get; set; }
    public string?   CorrelationKey       { get; set; }
    public int?      CounterSignedByUserId { get; set; }

    public int      CreatedById { get; set; }
    public DateTime CreatedOn   { get; set; }
    public int      TenantId    { get; set; } = -1;
}

/// <summary>The bundle of currently-applicable, Published agreement versions a caller should
/// show a subject before letting them proceed — returned by
/// IAgreementConsentProvider.GetApplicableAgreementsAsync.</summary>
public class AgreementBundleDTO
{
    public List<AgreementVersionDTO> Versions { get; set; } = new();
}