using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using gehGassi.Domain.Common;
using Newtonsoft.Json;

namespace gehGassi.Domain.Shop
{
    /// <summary>
    /// Repräsentiert eine Bestellung
    /// </summary>
    public class Order : IAuditable
    {
        /// <summary>
        /// Id der Bestellung
        /// </summary>
        [Key]
        [Required]
        public long Id { get; set; }

        /// <summary>
        /// Spezial-ID
        /// </summary>
        public Guid UniqueId { get; set; }

        /// <summary>
        /// Welcher "Kunden-Typ" hat die Bestellung erstellt?
        /// </summary>
        [Required]
        public OrderSource OrderSource { get; set; }

        #region App-User

        /// <summary>
        /// Id des App-Users
        /// </summary>
        public string AppUserId { get; set; }

        /// <summary>
        /// Name des App-Users (Vor- und Nachname)
        /// </summary>
        [MaxLength(250)]
        public string AppUserName { get; set; }

        /// <summary>
        /// App-User - Firma
        /// </summary>
        [MaxLength(200)]
        public string AppUserCompany { get; set; }

        #endregion

        #region Kunde

        /// <summary>
        /// Kunde
        /// </summary>
        public long? CustomerId { get; set; }

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

        #endregion

        /// <summary>
        /// Bestellnummer
        /// </summary>
        [Required]
        [MaxLength(100)]
        public string Number { get; set; }

        /// <summary>
        /// Zähler für Bestell-Nummer
        /// </summary>
        [Required]
        public long Counter { get; set; }

        /// <summary>
        /// Zwischensumme Netto
        /// </summary>
        [Required]
        public decimal Subtotal { get; set; }

        /// <summary>
        /// Zwischensumme Brutto
        /// </summary>
        [Required]
        public decimal SubtotalGross { get; set; }

        /// <summary>
        /// Gesamt-Preis Netto
        /// </summary>
        [Required]
        public decimal Total { get; set; }

        /// <summary>
        /// Gesamt-Preis Brutto
        /// </summary>
        [Required]
        public decimal TotalGross { get; set; }

        /// <summary>
        /// Versandkosten Netto
        /// </summary>
        [Required]
        public decimal Shipment { get; set; }

        /// <summary>
        /// Versandkosten Brutto
        /// </summary>
        [Required]
        public decimal ShipmentGross { get; set; }

        /// <summary>
        /// Status der Bestellung
        /// </summary>
        [Required]
        public OrderStatus OrderStatus { get; set; }

        /// <summary>
        /// Zahlungsart
        /// </summary>
        [Required]
        public PaymentType PaymentType { get; set; }

        /// <summary>
        /// Zahlungsstatus
        /// </summary>
        [Required]
        public PaymentStatus PaymentStatus { get; set; }

        /// <summary>
        /// Versandart
        /// </summary>
        [Required]
        public ShipmentType ShipmentType { get; set; }

        /// <summary>
        /// Versandstatus
        /// </summary>
        [Required]
        public ShipmentStatus ShipmentStatus { get; set; }

        /// <summary>
        /// Versanddatum
        /// </summary>
        public DateTimeOffset? ShipmentDate { get; set; }

        /// <summary>
        /// Lieferadresse
        /// </summary>
        public OrderAddress DeliveryAddress { get; set; }

        /// <summary>
        /// REchnungsadresse
        /// </summary>
        public OrderAddress BillingAddress { get; set; }

        /// <summary>
        /// Ist die Liefer-Adresse auch die Rechnungsadresse?
        /// </summary>
        [Required]
        public bool DeliveryAddressIsBilling { get; set; }

        /// <summary>
        /// Anmerkungen
        /// </summary>
        [MaxLength(1000)]
        public string Comment { get; set; }

        /// <summary>
        /// Steuerstufen mit Werten als Json
        /// </summary>
        public string TaxRatesJson { get; set; }

        /// <summary>
        /// Benutzer-Einstellungen
        /// </summary>
        [NotMapped]
        public Dictionary<decimal, decimal> TaxRates
        {
            get
            {
                if (string.IsNullOrWhiteSpace(TaxRatesJson))
                    return new Dictionary<decimal, decimal>();
                var taxRates = JsonConvert.DeserializeObject<Dictionary<decimal, decimal>>(TaxRatesJson, new JsonSerializerSettings() { Culture = CultureInfo.CurrentCulture });
                return taxRates;
            }
            set
            {
                var settings = JsonConvert.SerializeObject(value, new JsonSerializerSettings() { Culture = CultureInfo.InvariantCulture });
                TaxRatesJson = settings;
            }
        }

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

        /// <summary>
        /// Datum der letzten Änderung
        /// </summary>
        public DateTimeOffset? LastUpdate { get; set; }

        /// <summary>
        /// Wann wurden die AGB akzeptiert
        /// </summary>
        public DateTimeOffset? AcceptTermsAndConditionsDate { get; set; }

        /// <summary>
        /// Wann wurden die Datenschutzbestimmung akzeptiert
        /// </summary>
        public DateTimeOffset? AcceptGdprDate { get; set; }

        /// <summary>
        /// Wurde die Bestellung  gelöscht?
        /// </summary>
        [Required]
        public bool Deleted { get; set; }

        #region PayPal & Klarna Info

        /// <summary>
        /// Datum der Bezahlung via PayPal oder Klarna
        /// </summary>
        public DateTimeOffset? PaymentDate { get; set; }

        /// <summary>
        /// ID der PayPal-Order wenn Zahlung mittels PayPal
        /// </summary>
        [MaxLength(200)]
        public string PayPalOrderId { get; set; }

        /// <summary>
        /// ID der Klarna-Order wenn Zahlung mittels Klarna
        /// </summary>
        [MaxLength(200)]
        public string KlarnaOrderId { get; set; }

        /// <summary>
        /// Datum wann die "Alles versendet" Info an Klarna übergeben wurde
        /// </summary>
        public DateTimeOffset? KlarnaShipmentSentDate { get; set; }

        /// <summary>
        /// Gibt an ob beim Melden des Versands ein Problem aufgetreten ist und diese Bestellung ignoriert werden soll
        /// </summary>
        public bool KlarnaShipmentError { get; set; }

        /// <summary>
        /// Optional: Infos seitens des PaymentProviders
        /// </summary>
        public string PaymentInfo { get; set; }

        #endregion

        #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 "Orders";
        }

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

        #endregion
    }

    /// <summary>
    /// Repräsentiert einen Artikel in einer Bestellung
    /// </summary>
    public class OrderItem : IAuditable
    {
        /// <summary>
        /// Id des Bestell-Items
        /// </summary>
        [Key]
        [Required]
        public long Id { get; set; }

        /// <summary>
        /// Id der Bestellung
        /// </summary>
        [Required]
        public long OrderId { get; set; }

        /// <summary>
        /// Id des Artikels
        /// </summary>
        public int? ProductId { get; set; }

        /// <summary>
        /// Id der Produktkategorie
        /// </summary>
        public int? ProductCategoryId { get; set; }

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

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

        /// <summary>
        /// Artikelnummer
        /// </summary>
        [Required]
        [MaxLength(100)]
        public string Sku { get; set; }

        /// <summary>
        /// Typ
        /// </summary>
        [Required]
        public ProductType ProductType { get; set; }

        /// <summary>
        /// Id einer Listung, Werbung, Banner, Pin im Draft-Mode
        /// </summary>
        [MaxLength(128)]
        public string ItemId { get; set; }

        /// <summary>
        /// Id der Zugeordneten Steuer
        /// </summary>
        [Required]
        public int TaxRateId { get; set; }

        /// <summary>
        /// Gibt an ob das Produkt von der Steuer ausgenommen ist
        /// </summary>
        [Required]
        public bool IsTaxExempt { get; set; }

        /// <summary>
        /// Gibt an ob das Produkt versendet werden kann
        /// </summary>
        [Required]
        public bool IsShipEnabled { get; set; }

        /// <summary>
        /// Gibt an ob das Produkt Versandkostenbefreit ist
        /// </summary>
        [Required]
        public bool IsFreeShipping { get; set; }

        /// <summary>
        /// Zusatzversandkosten netto
        /// </summary>
        [Required]
        public decimal AdditionalShippingCharge { get; set; }

        /// <summary>
        /// Stückzahl
        /// </summary>
        [Required]
        public int Quantity { get; set; }

        /// <summary>
        /// Einzel-Preis Netto
        /// </summary>
        [Required]
        public decimal Price { get; set; }

        /// <summary>
        /// Einzel-Preis Brutto
        /// </summary>
        [Required]
        public decimal PriceGross { get; set; }

        /// <summary>
        /// Preis des Produktes netto für Produkte die 2 Preise benötigen
        /// </summary>
        [Required]
        public decimal Price2 { get; set; }

        /// <summary>
        /// Preis des Produktes brutto für Produkte die 2 Preise benötigen
        /// </summary>
        [Required]
        public decimal Price2Gross { get; set; }

        /// <summary>
        /// Gesamt-Preis Netto
        /// </summary>
        [Required]
        public decimal Total { get; set; }

        /// <summary>
        /// Gesamt-Preis Brutto
        /// </summary>
        [Required]
        public decimal TotalGross { get; set; }

        /// <summary>
        /// Gets or sets the weight
        /// </summary>
        [Required]
        public decimal Weight { get; set; }

        /// <summary>
        /// Gets or sets the length
        /// </summary>
        [Required]
        public decimal Length { get; set; }

        /// <summary>
        /// Gets or sets the width
        /// </summary>
        [Required]
        public decimal Width { get; set; }

        /// <summary>
        /// Gets or sets the height
        /// </summary>
        [Required]
        public decimal Height { get; set; }

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

        /// <summary>
        /// Datum der letzten Änderung
        /// </summary>
        public DateTimeOffset? LastUpdate { 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 "OrderItems";
        }

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

        #endregion
    }

    /// <summary>
    /// Repräsentiert eine Adresse für eine Bestellung
    /// </summary>
    public class OrderAddress
    {
        /// <summary>
        /// Titel
        /// </summary>
        [MaxLength(100)]
        public string Title { get; set; }

        /// <summary>
        /// Vorname
        /// </summary>
        [MaxLength(100)]
        public string FirstName { get; set; }

        /// <summary>
        /// Nachname
        /// </summary>
        [MaxLength(100)]
        public string LastName { get; set; }

        /// <summary>
        /// Company
        /// </summary>
        [MaxLength(200)]
        public string Company { get; set; }

        /// <summary>
        /// UID Nummer
        /// </summary>
        [MaxLength(50)]
        public string Vat { get; set; }

        /// <summary>
        /// Optionale Adresszeile 1
        /// </summary>
        [MaxLength(100)]
        public string AddressLine1 { get; set; }

        /// <summary>
        /// Optionale Adresszeile 2
        /// </summary>
        [MaxLength(100)]
        public string AddressLine2 { get; set; }

        /// <summary>
        /// Optional: Stadt / Ort
        /// </summary>
        [MaxLength(100)]
        public string City { get; set; }

        /// <summary>
        /// Optinale PLZ
        /// </summary>
        [MaxLength(20)]
        public string Zip { get; set; }

        /// <summary>
        /// Bundesland / Staat
        /// </summary>
        [MaxLength(25)]
        public string State { get; set; }

        /// <summary>
        /// ISO2 Ländercode
        /// </summary>
        [Required]
        [MaxLength(2)]
        public string CountryCode { get; set; }

        public string GetNameForPayPal()
        {
            if (!string.IsNullOrWhiteSpace(Company))
                return Company;
            return $"{FirstName} {LastName}";
        }
    }

    /// <summary>
    /// Hilfsklasse für die Abfrage von Bestellungen mit der Anzahl von physischen Produkten
    /// Wird verwendet um Klarna-Bestellungen die keine physischen Produkte beinhalten auf versendet zu setzen
    /// </summary>
    public class OrderPhysical
    {
        /// <summary>
        /// Id der Bestellung
        /// </summary>
        public long Id { get; set; }

        /// <summary>
        /// Spezial-ID
        /// </summary>
        public Guid UniqueId { get; set; }

        /// <summary>
        /// Status der Bestellung
        /// </summary>
        public OrderStatus OrderStatus { get; set; }

        /// <summary>
        /// Zahlungsart
        /// </summary>
        public PaymentType PaymentType { get; set; }

        /// <summary>
        /// Zahlungsstatus
        /// </summary>
        public PaymentStatus PaymentStatus { get; set; }

        /// <summary>
        /// Versandart
        /// </summary>
        public ShipmentType ShipmentType { get; set; }

        /// <summary>
        /// Versandstatus
        /// </summary>
        public ShipmentStatus ShipmentStatus { get; set; }

        /// <summary>
        /// Versanddatum
        /// </summary>
        public DateTimeOffset? ShipmentDate { get; set; }

        /// <summary>
        /// Anzahl der physischen Produkte in einer Bestellung
        /// </summary>
        public int PhysicalCount { get; set; }

        /// <summary>
        /// Wurde die Bestellung  gelöscht?
        /// </summary>
        public bool Deleted { get; set; }

        #region PayPal & Klarna Info

        /// <summary>
        /// Datum der Bezahlung via PayPal oder Klarna
        /// </summary>
        public DateTimeOffset? PaymentDate { get; set; }

        /// <summary>
        /// ID der PayPal-Order wenn Zahlung mittels PayPal
        /// </summary>
        public string PayPalOrderId { get; set; }

        /// <summary>
        /// ID der Klarna-Order wenn Zahlung mittels Klarna
        /// </summary>
        public string KlarnaOrderId { get; set; }

        /// <summary>
        /// Datum wann die "Alles versendet" Info an Klarna übergeben wurde
        /// </summary>
        public DateTimeOffset? KlarnaShipmentSentDate { get; set; }

        /// <summary>
        /// Gibt an ob beim Melden des Versands ein Problem aufgetreten ist und diese Bestellung ignoriert werden soll
        /// </summary>
        public bool KlarnaShipmentError { get; set; }

        /// <summary>
        /// Optional: Infos seitens des PaymentProviders
        /// </summary>
        public string PaymentInfo { get; set; }

        #endregion
    }
}