using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using gehGassi.Domain.Common;

namespace gehGassi.Domain.Dogs
{
    /// <summary>
    /// Repräsentiert ein Zertifikat für einen Walker
    /// </summary>
    public class Certificate : IAuditable
    {
        /// <summary>
        /// Eindeutige Id
        /// </summary>
        [Key]
        public long Id { get; set; }

        /// <summary>
        /// Id des app-Users / Walkers
        /// </summary>
        [Required]
        [MaxLength(128)]
        public string AppUserId { get; set; }

        /// <summary>
        /// Name des Dokumentes
        /// </summary>
        [Required]
        [MaxLength(200)]
        public string Name { get; set; }

        /// <summary>
        /// Datei
        /// </summary>
        [Required]
        [MaxLength(500)]
        public string FileName { get; set; }

        /// <summary>
        /// Status der Verifizierung
        /// </summary>
        [Required]
        public CertificateStatus Status { get; set; }

        /// <summary>
        /// Datum der Verifizierung
        /// </summary>
        public DateTimeOffset? VerificationDate { get; set; }

        /// <summary>
        /// Verification durch wen?
        /// </summary>
        [MaxLength(255)]
        public string VerifiedBy { get; set; }

        /// <summary>
        /// Offizieller Kommentar zur Verifizierung
        /// </summary>
        [MaxLength(1000)]
        public string VerificationComment { get; set; }

        /// <summary>
        /// Interner kommentar für gehGassi
        /// </summary>
        [MaxLength(1000)]
        public string InternalComment { get; set; }

        /// <summary>
        /// Datum der Erstellung
        /// </summary>
        public DateTimeOffset Created { get; set; }

        #region IAuditable
        /// <summary>
        /// Gibt den eindeutigen Key für die Entität zurück;
        /// Hier als String gelöst, weil damit auch kombinierte Schlüssel möglich sind.
        /// </summary>
        /// <returns>Eindeutiger Key</returns>
        public string AuditKey()
        {
            return Id.ToString();
        }

        /// <summary>
        /// Gibt den Objektnamen bzw. die Tabelle der Entität zurück
        /// </summary>
        /// <returns>Objektnamen</returns>
        public string AuditTable()
        {
            return "Certificates";
        }

        public AuditableOptions Options()
        {
            return AuditableOptions.Create | AuditableOptions.Edit | AuditableOptions.Delete;
        }

        #endregion

    }

    /// <summary>
    /// Status eines Zertifikates
    /// </summary>
    public enum CertificateStatus
    {
        /// <summary>
        /// Noch nicht verifiziert
        /// </summary>
        NotVerified = 1,
        /// <summary>
        /// Akzeptiert
        /// </summary>
        Accepted = 2,
        /// <summary>
        /// Abgelehnt
        /// </summary>
        Declined = 10
    }
}