Initial commit: Lagerbestand Blazor Projekt

Lagerbestand/Models/TireStack.cs

@@ -0,0 +1,259 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Lagerbestand.Models;
+
+/// <summary>
+/// Status of a tire stack in the storage system
+/// </summary>
+public enum TireStackStatus
+{
+    /// <summary>
+    /// Tires are currently stored in the warehouse
+    /// </summary>
+    Stored = 0,
+
+    /// <summary>
+    /// Tires have been picked up by the customer
+    /// </summary>
+    PickedUp = 1,
+
+    /// <summary>
+    /// Tires have been disposed/recycled
+    /// </summary>
+    Disposed = 2,
+
+    /// <summary>
+    /// Tires are reserved for pickup
+    /// </summary>
+    Reserved = 3,
+
+    /// <summary>
+    /// Tires are in inventory (shop stock, not customer-owned)
+    /// </summary>
+    Inventory = 4
+}
+
+/// <summary>
+/// Represents a stack of exactly 4 tires as a single indivisible unit.
+/// A stack is always 4 identical tires - there is no variable count.
+/// This is the main entity that tracks customer tire storage and shop inventory.
+/// </summary>
+public class TireStack
+{
+    /// <summary>
+    /// Number of tires in a stack - always 4
+    /// </summary>
+    public const int TiresPerStack = 4;
+
+    [Key]
+    public Guid Id { get; set; } = Guid.NewGuid();
+
+    /// <summary>
+    /// Custom item count for inventory (default: 4 = standard stack).
+    /// Only used for inventory items. Customer stacks always use TiresPerStack.
+    /// </summary>
+    [Range(1, 99)]
+    public int ItemCount { get; set; } = TiresPerStack;
+
+    /// <summary>
+    /// Unique identifier/ticket number for this tire stack (e.g., "TS-2024-0001")
+    /// This serves as the primary human-readable identifier.
+    /// </summary>
+    [Required]
+    [MaxLength(50)]
+    public string TicketNumber { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Customer who owns these tires (null for shop inventory)
+    /// </summary>
+    public Guid? CustomerId { get; set; }
+
+    [ForeignKey(nameof(CustomerId))]
+    public Customer? Customer { get; set; }
+
+    /// <summary>
+    /// Vehicle these tires belong to (null for shop inventory or legacy data)
+    /// </summary>
+    public Guid? VehicleId { get; set; }
+
+    [ForeignKey(nameof(VehicleId))]
+    public Vehicle? Vehicle { get; set; }
+
+    /// <summary>
+    /// Current storage location (null if picked up)
+    /// </summary>
+    public Guid? StorageLocationId { get; set; }
+
+    [ForeignKey(nameof(StorageLocationId))]
+    public StorageLocation? StorageLocation { get; set; }
+
+    /// <summary>
+    /// Tire category/type (used for inventory categorization)
+    /// </summary>
+    public Guid? CatalogItemId { get; set; }
+
+    [ForeignKey(nameof(CatalogItemId))]
+    public CatalogItem? CatalogItem { get; set; }
+
+    /// <summary>
+    /// Current status of the tire stack
+    /// </summary>
+    public TireStackStatus Status { get; set; } = TireStackStatus.Stored;
+
+    /// <summary>
+    /// Tire size (e.g., "225/45R17")
+    /// </summary>
+    [MaxLength(50)]
+    public string? TireSize { get; set; }
+
+    /// <summary>
+    /// Tire brand (e.g., "Michelin", "Continental")
+    /// </summary>
+    [MaxLength(100)]
+    public string? TireBrand { get; set; }
+
+    /// <summary>
+    /// Tire model (e.g., "Pilot Sport 4", "WinterContact TS 860")
+    /// </summary>
+    [MaxLength(100)]
+    public string? TireModel { get; set; }
+
+    /// <summary>
+    /// Season type
+    /// </summary>
+    public TireSeason Season { get; set; } = TireSeason.Sommer;
+
+    /// <summary>
+    /// Tread depth in mm (average of all 4 tires)
+    /// </summary>
+    [Range(0, 10)]
+    public decimal? TreadDepth { get; set; }
+
+    /// <summary>
+    /// DOT/manufacturing date code (e.g., "2523" = week 25 of 2023)
+    /// </summary>
+    [MaxLength(20)]
+    public string? DotCode { get; set; }
+
+    /// <summary>
+    /// Whether tires are mounted on rims
+    /// </summary>
+    public bool WithRims { get; set; } = true;
+
+    /// <summary>
+    /// Rim size if with rims (e.g., "17 Zoll")
+    /// </summary>
+    [MaxLength(20)]
+    public string? RimSize { get; set; }
+
+    /// <summary>
+    /// TPMS sensors present
+    /// </summary>
+    public bool HasTpms { get; set; }
+
+    /// <summary>
+    /// Tire condition rating
+    /// </summary>
+    public TireCondition Condition { get; set; } = TireCondition.Good;
+
+    /// <summary>
+    /// Additional notes about the tire condition or special requirements
+    /// </summary>
+    [MaxLength(1000)]
+    public string? Notes { get; set; }
+
+    /// <summary>
+    /// Date when tires were stored
+    /// </summary>
+    public DateTime StoredAt { get; set; } = DateTime.UtcNow;
+
+    /// <summary>
+    /// Date when tires were picked up
+    /// </summary>
+    public DateTime? PickedUpAt { get; set; }
+
+    /// <summary>
+    /// Expected pickup date (next season change)
+    /// </summary>
+    public DateTime? ExpectedPickupDate { get; set; }
+
+    /// <summary>
+    /// User who stored the tires
+    /// </summary>
+    public Guid? StoredByUserId { get; set; }
+
+    /// <summary>
+    /// User who processed the pickup
+    /// </summary>
+    public Guid? PickedUpByUserId { get; set; }
+
+    public bool IsActive { get; set; } = true;
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public DateTime? UpdatedAt { get; set; }
+
+    /// <summary>
+    /// Whether this is shop inventory (not customer-owned)
+    /// </summary>
+    [NotMapped]
+    public bool IsInventory => CustomerId == null;
+
+    /// <summary>
+    /// Display name - customer name or category name for inventory
+    /// </summary>
+    [NotMapped]
+    public string DisplayName => Customer?.FullName ?? CatalogItem?.Name ?? "Lagerbestand";
+
+    /// <summary>
+    /// Summary description for display
+    /// </summary>
+    [NotMapped]
+    public string Summary
+    {
+        get
+        {
+            var parts = new List<string>();
+            if (!string.IsNullOrEmpty(TireBrand)) parts.Add(TireBrand);
+            if (!string.IsNullOrEmpty(TireSize)) parts.Add(TireSize);
+            parts.Add(Season.ToString());
+            if (WithRims) parts.Add("mit Felgen");
+            return string.Join(" | ", parts);
+        }
+    }
+
+    /// <summary>
+    /// Status display text in German
+    /// </summary>
+    [NotMapped]
+    public string StatusText => Status switch
+    {
+        TireStackStatus.Stored => "Eingelagert",
+        TireStackStatus.PickedUp => "Abgeholt",
+        TireStackStatus.Disposed => "Entsorgt",
+        TireStackStatus.Reserved => "Reserviert",
+        TireStackStatus.Inventory => "Lagerbestand",
+        _ => "Unbekannt"
+    };
+
+    /// <summary>
+    /// Days stored (for billing purposes)
+    /// </summary>
+    [NotMapped]
+    public int DaysStored => (PickedUpAt ?? DateTime.UtcNow).Subtract(StoredAt).Days;
+
+    /// <summary>
+    /// Condition display text in German
+    /// </summary>
+    [NotMapped]
+    public string ConditionText => Condition switch
+    {
+        TireCondition.Excellent => "Sehr gut",
+        TireCondition.Good => "Gut",
+        TireCondition.Fair => "Ausreichend",
+        TireCondition.Poor => "Mangelhaft",
+        TireCondition.Critical => "Kritisch",
+        _ => "Unbekannt"
+    };
+}