using DigitalData.Core.Exceptions;
using EnvelopeGenerator.Domain;
using EnvelopeGenerator.Extensions;

namespace EnvelopeGenerator.Application.DocStatus.Commands;

/// <summary>
/// 
/// </summary>
public record ModifyDocStatusCommandBase
{
    /// <summary>
    /// 
    /// </summary>
    public string? Key
    {
        get => Envelope?.Uuid is string uuid && Receiver?.Signature is string signature
                ? (uuid, signature).EncodeEnvelopeReceiverId()
                : null;
        init
        {
            if (value is null)
                return;

            (string? EnvelopeUuid, string? ReceiverSignature) = value.DecodeEnvelopeReceiverId();
            if (string.IsNullOrEmpty(EnvelopeUuid) || string.IsNullOrEmpty(ReceiverSignature))
            {
                throw new BadRequestException("Der EnvelopeReceiverKey muss ein gültiger Base64-kodierter String sein, der die EnvelopeUuid und die ReceiverSignature enthält.");
            }
            Envelope.Uuid = EnvelopeUuid;
            Receiver.Signature = ReceiverSignature;
        }
    }

    /// <summary>
    /// Der Umschlag, der mit dem Empfänger verknüpft ist.
    /// </summary>
    public EnvelopeQuery Envelope { get; set; } = new();

    /// <summary>
    /// Der Empfänger, der mit dem Umschlag verknüpft ist.
    /// </summary>
    public ReceiverQuery Receiver { get; set; } = new();

    /// <summary>
    /// Gets the current status code.
    /// </summary>
    public Constants.DocumentStatus Status => Value is null ? Constants.DocumentStatus.Created : Constants.DocumentStatus.Signed;

    /// <summary>
    /// Gets or sets the display value associated with the status.
    /// </summary>
    public string? Value { get; set; }

    /// <summary>
    /// Gets timestamp when this record was added.
    /// </summary>
    public DateTime StatusChangedWhen { get; } = DateTime.Now;

    /// <summary>
    /// Maps the current command to a new instance of the specified type.
    /// </summary>
    /// <typeparam name="TDest"></typeparam>
    /// <returns></returns>
    public TDest To<TDest>() where TDest : ModifyDocStatusCommandBase, new()
        => new()
        {
            Key = Key,
            Envelope = Envelope,
            Receiver = Receiver,
            Value = Value
        };
}

#region Queries
/// <summary>
/// Repräsentiert eine Abfrage für Umschläge.
/// </summary>
public record EnvelopeQuery
{
    /// <summary>
    /// Die eindeutige Kennung des Umschlags.
    /// </summary>
    public int? Id { get; init; }

    /// <summary>
    /// Die universell eindeutige Kennung des Umschlags.
    /// </summary>
    public string? Uuid { get; set; }
}

/// <summary>
/// Stellt eine Abfrage dar, um die Details eines Empfängers zu lesen.
/// um spezifische Informationen über einen Empfänger abzurufen.
/// </summary>
public record ReceiverQuery
{
    /// <summary>
    /// ID des Empfängers
    /// </summary>
    public int? Id { get; init; }

    /// <summary>
    /// E-Mail Adresse des Empfängers
    /// </summary>
    public string? EmailAddress { get; init; }

    /// <summary>
    /// Eindeutige Signatur des Empfängers
    /// </summary>
    public string? Signature { get; set; }
}
#endregion