feat: inventory management by location feature

CulinaryCommandApp/Components/Layout/NavMenu.razor

@@ -5,6 +5,9 @@
 @using CulinaryCommand.Components.Custom
 @using CulinaryCommand.Services
 @inject IUserContextService UserCtx
+@inject LocationState LocationState
+@inject NavigationManager Nav
+@implements IDisposable
 @rendermode InteractiveServer
 
 <div class="top-row ps-3 navbar navbar-dark">
@@ -36,9 +39,10 @@
         </div>
 
         <div class="nav-item px-3">
-            <NavLink class="nav-link" href="/inventory-management">
+            <a class="nav-link @(Nav.Uri.Contains("/inventory-management") ? "active" : "")"
+               href="#" @onclick="async () => await GoToInventory()" @onclick:preventDefault="true">
                 <span class="bi bi-box-seam nav-icon" aria-hidden="true"></span> Inventory
-            </NavLink>
+            </a>
         </div>
 
         @if (_role == "Admin")
@@ -81,12 +85,6 @@
                     <span class="bi bi-basket3 nav-icon"></span> Ingredients
                 </NavLink>
             </div>
-            <div class="nav-item px-3">
-                <NavLink class="nav-link" href="/inventory-management">
-                    <span class="bi bi-box-seam nav-icon"></span> Inventory
-                </NavLink>
-            </div>
-
             <div class="nav-item px-3">
                 <NavLink class="nav-link" href="/inventory-catalog">
                     <span class="bi bi-card-list nav-icon" aria-hidden="true"></span> Inventory Catalog
@@ -109,9 +107,36 @@
 
     protected override async Task OnInitializedAsync()
     {
-        // Compile-safe even if auth isn't working yet:
-        // - If not authenticated or DB user not found, _role stays null.
         var ctx = await UserCtx.GetAsync();
         _role = ctx.User?.Role;
+
+        LocationState.OnChange += HandleLocationChange;
+    }
+
+    private async Task GoToInventory()
+    {
+        var locId = LocationState.CurrentLocation?.Id;
+
+        if (!locId.HasValue)
+        {
+            var ctx = await UserCtx.GetAsync();
+            locId = ctx.AccessibleLocations.FirstOrDefault()?.Id;
+        }
+
+        var href = locId.HasValue
+            ? $"/inventory-management/{locId.Value}"
+            : "/inventory-management";
+
+        Nav.NavigateTo(href);
+    }
+
+    private void HandleLocationChange()
+    {
+        InvokeAsync(StateHasChanged);
+    }
+
+    public void Dispose()
+    {
+        LocationState.OnChange -= HandleLocationChange;
     }
-}
+}

CulinaryCommandApp/Data/AppDbContext.cs

@@ -79,6 +79,21 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
                 .WithMany(l => l.ManagerLocations)
                 .HasForeignKey(ml => ml.LocationId);
 
+            // Ingredient belongs to a Location
+            modelBuilder.Entity<CulinaryCommand.Inventory.Entities.Ingredient>()
+                .HasOne(i => i.Location)
+                .WithMany()
+                .HasForeignKey(i => i.LocationId)
+                .OnDelete(DeleteBehavior.Cascade);
+
+            // Ingredient optionally belongs to a Vendor
+            modelBuilder.Entity<CulinaryCommand.Inventory.Entities.Ingredient>()
+                .HasOne(i => i.Vendor)
+                .WithMany()
+                .HasForeignKey(i => i.VendorId)
+                .OnDelete(DeleteBehavior.SetNull)
+                .IsRequired(false);
+
             // Vendor belongs to a Company
             modelBuilder.Entity<V.Vendor>()
                 .HasOne(v => v.Company)

CulinaryCommandApp/Inventory/DTOs/CreateIngredientDTO.cs

@@ -10,10 +10,11 @@ public class CreateIngredientDTO
         public decimal CurrentQuantity { get; set; } = 0;
         public decimal Price { get; set; } = 0m;
         public string? Category { get; set; }
-        // used to determine if restock is needed
         public decimal ReorderLevel { get; set; } = 0m;
-        // Use an integer Id to reference the Unit (ex: a foreign key to the Units table)
         [Range(1, int.MaxValue, ErrorMessage = "UnitId must be a positive integer.")]
         public int UnitId { get; set; }
+        [Range(1, int.MaxValue, ErrorMessage = "LocationId must be a positive integer.")]
+        public int LocationId { get; set; }
+        public int? VendorId { get; set; }
     }
 }

CulinaryCommandApp/Inventory/DTOs/InventoryItemDTO.cs

@@ -16,5 +16,8 @@ public class InventoryItemDTO
         public DateTime? OutOfStockDate { get; set; }
         public DateTime? LastOrderDate { get; set; }
         public string? Notes { get; set; }
+        public int? VendorId { get; set; }
+        public string? VendorName { get; set; }
+        public string? VendorLogoUrl { get; set; }
     }
 }

CulinaryCommandApp/Inventory/Entities/Ingredient.cs

@@ -1,4 +1,5 @@
 using System;
+using CulinaryCommand.Data.Entities;
 
 namespace CulinaryCommand.Inventory.Entities
 {
@@ -9,6 +10,14 @@ public class Ingredient
         // display name of the ingredient (ex: "flour", "eggs")
         public string Name { get; set; } = string.Empty;
 
+        // fk to the location this ingredient belongs to
+        public int LocationId { get; set; }
+        public Location? Location { get; set; }
+
+        // optional fk to the vendor that supplies this ingredient
+        public int? VendorId { get; set; }
+        public CulinaryCommand.Vendor.Entities.Vendor? Vendor { get; set; }
+
         // fk to the unit used to track stock (ex: g, kg, each).
         public int UnitId { get; set; }
 
@@ -39,5 +48,4 @@ public class Ingredient
         // optional, used to describe any details about the ingredient
         public string? Notes { get; set; }
     }
-
 }