Param binding refactor (#27)

fundamentals/minimal-apis/samples/arg-lists/Models/Todo.cs

@@ -0,0 +1,9 @@
+namespace TodoApi.Models;
+
+public class Todo
+{
+    public int Id { get; set; }
+    public string? Name { get; set; }
+    public bool IsComplete { get; set; }
+    public string? Secret { get; set; }
+}

fundamentals/minimal-apis/samples/arg-lists/Models/TodoDb.cs

@@ -0,0 +1,18 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace TodoApi.Models;
+
+class TodoDb : DbContext
+{
+    public TodoDb(DbContextOptions<TodoDb> options)
+        : base(options) { }
+
+    public DbSet<Todo> Todos => Set<Todo>();
+}
+
+
+record TodoItemRequest(int Id, TodoDb Db);
+
+record CreateTodoItemRequest(TodoItemDTO Dto, TodoDb Db);
+
+record EditTodoItemRequest(int Id, TodoItemDTO Dto, TodoDb Db);

fundamentals/minimal-apis/samples/arg-lists/Models/TodoItemDTO.cs

@@ -0,0 +1,12 @@
+namespace TodoApi.Models;
+
+public class TodoItemDTO
+{
+    public int Id { get; set; }
+    public string? Name { get; set; }
+    public bool IsComplete { get; set; }
+
+    public TodoItemDTO() { }
+    public TodoItemDTO(Todo todoItem) =>
+    (Id, Name, IsComplete) = (todoItem.Id, todoItem.Name, todoItem.IsComplete);
+}

fundamentals/minimal-apis/samples/arg-lists/Program.cs

@@ -1,4 +1,6 @@
+// <snippet_top>
 using Microsoft.EntityFrameworkCore;
+using TodoApi.Models;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddDatabaseDeveloperPageExceptionFilter();
@@ -8,12 +10,17 @@ var app = builder.Build();
 app.MapGet("/todoitems", async (TodoDb db) =>
     await db.Todos.Select(x => new TodoItemDTO(x)).ToListAsync());
 
-app.MapGet("/todoitems/{id}", async ([AsParameters] TodoItemRequest request) =>
-    await request.Db.Todos.FindAsync(request.Id)
+// <snippet_id>
+app.MapGet("/todoitems/{id}", async (int Id, TodoDb Db) =>
+    await Db.Todos.FindAsync(Id)
         is Todo todo
             ? Results.Ok(new TodoItemDTO(todo))
             : Results.NotFound());
+// </snippet_id>
+// Remaining code removed for brevity.
+// </snippet_top>
 
+// <snippet_post>
 app.MapPost("/todoitems", async ([AsParameters] CreateTodoItemRequest request) =>
 {
     var todoItem = new Todo
@@ -27,8 +34,63 @@ app.MapPost("/todoitems", async ([AsParameters] CreateTodoItemRequest request) =
 
     return Results.Created($"/todoitems/{todoItem.Id}", new TodoItemDTO(todoItem));
 });
+// </snippet_post>
 
-app.MapPut("/todoitems/{id}", async ([AsParameters] EditTodoItemRequest request) =>
+// <snippet_put>
+app.MapPut("/todoitems/{id}", async (int Id, TodoItemDTO Dto, TodoDb Db) =>
+{
+    var todo = await Db.Todos.FindAsync(Id);
+
+    if (todo is null) return Results.NotFound();
+
+    todo.Name = Dto.Name;
+    todo.IsComplete = Dto.IsComplete;
+
+    await Db.SaveChangesAsync();
+
+    return Results.NoContent();
+});
+// </snippet_put>
+
+// <snippet_delete>
+app.MapDelete("/todoitems/{id}", async (int Id, TodoDb Db) =>
+{
+    if (await Db.Todos.FindAsync(Id) is Todo todo)
+    {
+        Db.Todos.Remove(todo);
+        await Db.SaveChangesAsync();
+        return Results.Ok(new TodoItemDTO(todo));
+    }
+
+    return Results.NotFound();
+});
+// </snippet_delete>
+
+// --- [AsParameters] go here ----------------------
+// </snippet_ap_id>
+app.MapGet("/ap/todoitems/{id}", async ([AsParameters] TodoItemRequest request) =>
+    await request.Db.Todos.FindAsync(request.Id)
+        is Todo todo
+            ? Results.Ok(new TodoItemDTO(todo))
+            : Results.NotFound());
+// </snippet_ap_id>
+
+// <snippet_ap_post>
+app.MapPost("/ap/todoitems", async ([AsParameters] CreateTodoItemRequest request) =>
+{
+    var todoItem = new Todo
+    {
+        IsComplete = request.Dto.IsComplete,
+        Name = request.Dto.Name
+    };
+
+    request.Db.Todos.Add(todoItem);
+    await request.Db.SaveChangesAsync();
+
+    return Results.Created($"/todoitems/{todoItem.Id}", new TodoItemDTO(todoItem));
+});
+// <snippet_ap_put>
+app.MapPut("/ap/todoitems/{id}", async ([AsParameters] EditTodoItemRequest request) =>
 {
     var todo = await request.Db.Todos.FindAsync(request.Id);
 
@@ -41,8 +103,10 @@ app.MapPut("/todoitems/{id}", async ([AsParameters] EditTodoItemRequest request)
 
     return Results.NoContent();
 });
+// </snippet_ap_put>
 
-app.MapDelete("/todoitems/{id}", async ([AsParameters] TodoItemRequest request) =>
+// <snippet_ap_delete>
+app.MapDelete("/ap/todoitems/{id}", async ([AsParameters] TodoItemRequest request) =>
 {
     if (await request.Db.Todos.FindAsync(request.Id) is Todo todo)
     {
@@ -55,37 +119,3 @@ app.MapDelete("/todoitems/{id}", async ([AsParameters] TodoItemRequest request)
 });
 
 app.Run();
-
-public class Todo
-{
-    public int Id { get; set; }
-    public string? Name { get; set; }
-    public bool IsComplete { get; set; }
-    public string? Secret { get; set; }
-}
-
-public class TodoItemDTO
-{
-    public int Id { get; set; }
-    public string? Name { get; set; }
-    public bool IsComplete { get; set; }
-
-    public TodoItemDTO() { }
-    public TodoItemDTO(Todo todoItem) =>
-    (Id, Name, IsComplete) = (todoItem.Id, todoItem.Name, todoItem.IsComplete);
-}
-
-
-class TodoDb : DbContext
-{
-    public TodoDb(DbContextOptions<TodoDb> options)
-        : base(options) { }
-
-    public DbSet<Todo> Todos => Set<Todo>();
-}
-
-record TodoItemRequest(int Id, TodoDb Db);
-
-record CreateTodoItemRequest(TodoItemDTO Dto, TodoDb Db);
-
-record EditTodoItemRequest(int Id, TodoItemDTO Dto, TodoDb Db);