From e5b4984515e497ceb967b77ecc7f72e5f6e3d127 Mon Sep 17 00:00:00 2001
From: syneffort <syneffort@gmail.com>
Date: Thu, 24 Aug 2023 13:57:28 +0900
Subject: [PATCH] dependency injection

---
 BlazorApp/BlazorApp/Data/FastFoodService.cs   | 16 +++++++
 BlazorApp/BlazorApp/Data/Food.cs              |  8 ++++
 BlazorApp/BlazorApp/Data/FoodService.cs       | 17 +++++++
 BlazorApp/BlazorApp/Data/IFoodService.cs      |  7 +++
 BlazorApp/BlazorApp/Data/PaymentService.cs    | 12 +++++
 BlazorApp/BlazorApp/Data/SingletonService.cs  | 47 +++++++++++++++++++
 .../BlazorApp/Data/WeatherForecastService.cs  |  4 +-
 BlazorApp/BlazorApp/Pages/Food.razor          | 32 +++++++++++++
 BlazorApp/BlazorApp/Program.cs                |  9 ++++
 BlazorApp/BlazorApp/Shared/NavMenu.razor      |  5 ++
 10 files changed, 155 insertions(+), 2 deletions(-)
 create mode 100644 BlazorApp/BlazorApp/Data/FastFoodService.cs
 create mode 100644 BlazorApp/BlazorApp/Data/Food.cs
 create mode 100644 BlazorApp/BlazorApp/Data/FoodService.cs
 create mode 100644 BlazorApp/BlazorApp/Data/IFoodService.cs
 create mode 100644 BlazorApp/BlazorApp/Data/PaymentService.cs
 create mode 100644 BlazorApp/BlazorApp/Data/SingletonService.cs
 create mode 100644 BlazorApp/BlazorApp/Pages/Food.razor

diff --git a/BlazorApp/BlazorApp/Data/FastFoodService.cs b/BlazorApp/BlazorApp/Data/FastFoodService.cs
new file mode 100644
index 0000000..db3a2c7
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/FastFoodService.cs
@@ -0,0 +1,16 @@
+namespace BlazorApp.Data
+{
+    public class FastFoodService : IFoodService
+    {
+        public IEnumerable<Food> GetFoods()
+        {
+            List<Food> foods = new List<Food>()
+            {
+                new Food() { Name = "감자튀김", Price = 1500 },
+                new Food() { Name = "햄버거", Price = 6000 },
+            };
+
+            return foods;
+        }
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/Food.cs b/BlazorApp/BlazorApp/Data/Food.cs
new file mode 100644
index 0000000..06bc3bc
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/Food.cs
@@ -0,0 +1,8 @@
+namespace BlazorApp.Data
+{
+    public class Food
+    {
+        public string Name { get; set; }
+        public int Price { get; set; }
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/FoodService.cs b/BlazorApp/BlazorApp/Data/FoodService.cs
new file mode 100644
index 0000000..e278192
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/FoodService.cs
@@ -0,0 +1,17 @@
+namespace BlazorApp.Data
+{
+    public class FoodService : IFoodService
+    {
+        public IEnumerable<Food> GetFoods()
+        {
+            List<Food> foods = new List<Food>()
+            {
+                new Food() { Name = "비빔밥", Price = 9000 },
+                new Food() { Name = "김밥", Price = 4000 },
+                new Food() { Name = "쫄면", Price = 7000 },
+            };
+
+            return foods;
+        }
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/IFoodService.cs b/BlazorApp/BlazorApp/Data/IFoodService.cs
new file mode 100644
index 0000000..4ea4c65
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/IFoodService.cs
@@ -0,0 +1,7 @@
+namespace BlazorApp.Data
+{
+    public interface IFoodService
+    {
+        public IEnumerable<Food> GetFoods();
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/PaymentService.cs b/BlazorApp/BlazorApp/Data/PaymentService.cs
new file mode 100644
index 0000000..61ed609
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/PaymentService.cs
@@ -0,0 +1,12 @@
+namespace BlazorApp.Data
+{
+    public class PaymentService
+    {
+        private IFoodService _service;
+
+        public PaymentService(IFoodService service)
+        {
+            _service = service;
+        }
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/SingletonService.cs b/BlazorApp/BlazorApp/Data/SingletonService.cs
new file mode 100644
index 0000000..e323808
--- /dev/null
+++ b/BlazorApp/BlazorApp/Data/SingletonService.cs
@@ -0,0 +1,47 @@
+namespace BlazorApp.Data
+{
+    public class SingletonService : IDisposable
+    {
+        public Guid ID { get; set; }
+
+        public SingletonService()
+        {
+            ID = Guid.NewGuid();
+        }
+
+        public void Dispose()
+        {
+            Console.WriteLine($"SingletonService was disposed (Guid: {this.ID.ToString()})");
+        }
+    }
+
+    public class TransientService : IDisposable
+    {
+        public Guid ID { get; set; }
+
+        public TransientService()
+        {
+            ID = Guid.NewGuid();
+        }
+
+        public void Dispose()
+        {
+            Console.WriteLine($"TransientService was disposed (Guid: {this.ID.ToString()})");
+        }
+    }
+
+    public class ScopedService : IDisposable
+    {
+        public Guid ID { get; set; }
+
+        public ScopedService()
+        {
+            ID = Guid.NewGuid();
+        }
+
+        public void Dispose()
+        {
+            Console.WriteLine($"ScopedService was disposed (Guid: {this.ID.ToString()})");
+        }
+    }
+}
diff --git a/BlazorApp/BlazorApp/Data/WeatherForecastService.cs b/BlazorApp/BlazorApp/Data/WeatherForecastService.cs
index 8f10c36..46a0483 100644
--- a/BlazorApp/BlazorApp/Data/WeatherForecastService.cs
+++ b/BlazorApp/BlazorApp/Data/WeatherForecastService.cs
@@ -4,8 +4,8 @@ namespace BlazorApp.Data
     {
         private static readonly string[] Summaries = new[]
         {
-        "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-    };
+            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
+        };
 
         public Task<WeatherForecast[]> GetForecastAsync(DateTime startDate)
         {
diff --git a/BlazorApp/BlazorApp/Pages/Food.razor b/BlazorApp/BlazorApp/Pages/Food.razor
new file mode 100644
index 0000000..618f1a9
--- /dev/null
+++ b/BlazorApp/BlazorApp/Pages/Food.razor
@@ -0,0 +1,32 @@
+@page "/food"
+@using BlazorApp.Data;
+
+@inject IFoodService _foodService;
+@inject PaymentService _paymentService;
+
+@inject SingletonService _singleton;
+@inject ScopedService _scoped;
+@inject TransientService _transient;
+
+<h3>Food</h3>
+
+<div>
+    @foreach (var food in _foodService.GetFoods())
+    {
+        <div>@food.Name</div>
+        <div>@food.Price</div>
+    }
+</div>
+
+<div>
+    <h1>Singleton</h1>
+    <label>Guid: @_singleton.ID</label>
+    <h1>Scoped</h1>
+    <label>Guid: @_scoped.ID</label>
+    <h1>Transient</h1>
+    <label>Guid: @_transient.ID</label>
+</div>
+
+@code {
+
+}
\ No newline at end of file
diff --git a/BlazorApp/BlazorApp/Program.cs b/BlazorApp/BlazorApp/Program.cs
index 0a4883e..b81bb9b 100644
--- a/BlazorApp/BlazorApp/Program.cs
+++ b/BlazorApp/BlazorApp/Program.cs
@@ -15,6 +15,15 @@ namespace BlazorApp
             builder.Services.AddServerSideBlazor();
             builder.Services.AddSingleton<WeatherForecastService>();
 
+            // Dependency Injection
+            builder.Services.AddSingleton<IFoodService, FastFoodService>();
+            builder.Services.AddSingleton<PaymentService>();
+
+            // 3���� ���
+            builder.Services.AddSingleton<SingletonService>(); // ���� ���۽�
+            builder.Services.AddScoped<ScopedService>(); // ���ӽ�
+            builder.Services.AddTransient<TransientService>(); // ��û��
+
             var app = builder.Build();
 
             // Configure the HTTP request pipeline.
diff --git a/BlazorApp/BlazorApp/Shared/NavMenu.razor b/BlazorApp/BlazorApp/Shared/NavMenu.razor
index 9d694da..8bdab02 100644
--- a/BlazorApp/BlazorApp/Shared/NavMenu.razor
+++ b/BlazorApp/BlazorApp/Shared/NavMenu.razor
@@ -34,6 +34,11 @@
                 <span class="oi oi-flag" aria-hidden="true"></span> User
             </NavLink>
         </div>
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="food">
+                <span class="oi oi-basket" aria-hidden="true"></span> Food
+            </NavLink>
+        </div>
     </nav>
 </div>