using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using gehGassi.Domain.Base;
using gehGassi.Domain.Common;
using gehGassi.Domain.Localization;

namespace gehGassi.Domain.Subscriptions
{
    /// <summary>
    /// Repräsentiert ein Abonnement
    /// </summary>
    public class Subscription : SyncEntityLocalizable, IAuditable
    {
        /// <summary>
        /// Subscription Code - Produkt ID für Stores
        /// </summary>
        [Required]
        [MaxLength(128)]
        public string Code { get; set; }

        /// <summary>
        /// Dauer des Abonnements
        /// </summary>
        [Required]
        public SubscriptionLength Length { get; set; }

        /// <summary>
        /// Preis des Abonnements in Euro
        /// </summary>
        [Required]
        public decimal Price { get; set; }

        /// <summary>
        /// Art des Abonnements - für welchen Benutzer-Typ?
        /// </summary>
        [Required]
        public AppMode AppMode { get; set; }

        /// <summary>
        /// Name des Abonnements
        /// </summary>
        [Localized]
        [NotMapped]
        public string Name
        {
            get => Get("Name", GetLanguage());
            set => Set("Name", GetLanguage(), value);
        }

        /// <summary>
        /// Name - Inhalt
        /// </summary>
        [Column]
        public string NameLocalized { get; set; }

        /// <summary>
        /// Beschreibung des Abonnements
        /// </summary>
        [Localized]
        [NotMapped]
        public string Description
        {
            get => Get("Description", GetLanguage());
            set => Set("Description", GetLanguage(), value);
        }

        /// <summary>
        /// Beschreibung - Inhalt
        /// </summary>
        [Column]
        public string DescriptionLocalized { get; set; }

        /// <summary>
        /// Ist das Abonnement aktiv?
        /// </summary>
        [Required]
        public bool Enabled { get; set; }

        /// <summary>
        /// Zeit in Tagen die als Toleranz bei Ablauf akzeptiert wird
        /// </summary>
        [Required]
        public int GracePeriodInDays { get; set; }

        /// <summary>
        /// Ist das Abonnement ausgeblendet?
        /// </summary>
        [Required]
        public bool Hidden { get; set; }

        /// <summary>
        /// Optional: the Max registered date of the app user to see this subscription
        /// </summary>
        public DateTimeOffset? MaxRegisteredDate { get; set; }

        /// <summary>
        /// Hilfsmethode die die Ablaufzeit des Abonnements berechnet
        /// </summary>
        /// <returns>Ablaufdatum</returns>
        public DateTimeOffset GetExpiration(DateTimeOffset date)
        {
            switch (Length)
            {
                case SubscriptionLength.OneWeek:
                    return date.AddDays(7);
                case SubscriptionLength.OneMonth:
                    return date.AddMonths(1);
                case SubscriptionLength.ThreeMonths:
                    return date.AddMonths(3);
                case SubscriptionLength.SixMonths:
                    return date.AddMonths(6);
                case SubscriptionLength.OneYear:
                    return date.AddYears(1);
                default:
                    return date;
            }
        }

        /// <summary>
        /// Hilfsmethode die die Ablaufzeit des Abonnements berechnet und die Tolranzzeit hinzufügt
        /// </summary>
        /// <param name="date">Datum</param>
        /// <returns>Ablaufdatum mit toleranz</returns>
        public DateTimeOffset GetExpirationWithGrace(DateTimeOffset date)
        {
            var expirationDate = GetExpiration(date);
            return expirationDate.AddDays(GracePeriodInDays);
        }

        #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 "Subscriptions";
        }

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

        #endregion
    }

    /// <summary>
    /// Repräsentiert ein Abonnement mit Namen aufgleöst
    /// </summary>
    public class SubscriptionWithNames : SyncEntityLocalizableVw
    {
        /// <summary>
        /// Subscription Code - Produkt ID für Stores
        /// </summary>
        public string Code { get; set; }

        /// <summary>
        /// Dauer des Abonnements
        /// </summary>
        public SubscriptionLength Length { get; set; }

        /// <summary>
        /// Preis des Abonnements in Euro
        /// </summary>
        public decimal Price { get; set; }

        /// <summary>
        /// Art des Abonnements - für welchen Benutzer-Typ?
        /// </summary>
        public AppMode AppMode { get; set; }

        /// <summary>
        /// Name des Abonnements
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// Name - Inhalt
        /// </summary>
        [Column]
        public string NameLocalized { get; set; }

        /// <summary>
        /// Beschreibung des Abonnements
        /// </summary>
        public string Description { get; set; }

        /// <summary>
        /// Beschreibung - Inhalt
        /// </summary>
        [Column]
        public string DescriptionLocalized { get; set; }

        /// <summary>
        /// Ist das Abonnement aktiv?
        /// </summary>
        public bool Enabled { get; set; }

        /// <summary>
        /// Zeit in Tagen die als Toleranz bei Ablauf akzeptiert wird
        /// </summary>
        public int GracePeriodInDays { get; set; }

        /// <summary>
        /// Ist das Abonnement ausgeblendet?
        /// </summary>
        public bool Hidden { get; set; }

        /// <summary>
        /// Optional: the Max registered date of the app user to see this subscription
        /// </summary>
        public DateTimeOffset? MaxRegisteredDate { get; set; }

        /// <summary>
        /// Anzahl der Abonnements insgesamt
        /// </summary>
        public int SubscriptionCountTotal { get; set; }

        /// <summary>
        /// Anzahl der aktiven Abonnements
        /// </summary>
        public int SubscriptionCountActive { get; set; }

        /// <summary>
        /// Anzahl der inaktiven Abonnements
        /// </summary>
        public int SubscriptionCountInactive{ get; set; }
    }
}