Implemented book edit form

HotwiredBooks/Controllers/BooksController.cs

@@ -41,12 +41,16 @@ from author in collection.TryGetValue("author", out var a) ? a.Just() : Nothing
     }
 
     [HttpGet]
-    public ActionResult Edit(int id) =>
-        throw new NotImplementedException();
+    public async Task<ActionResult> Edit(Guid id) =>
+        (await booksRepository.Lookup(id))
+        .Match(
+            book => View(new BooksEditViewModel(book)),
+            () => throw new ArgumentException()
+        );
 
-    [HttpPost]
+    [HttpPatch, HttpPut]
     [ValidateAntiForgeryToken]
-    public ActionResult Edit(int id, IFormCollection collection)
+    public ActionResult Update(Guid id, IFormCollection collection)
     {
         try
         {

HotwiredBooks/ViewComponents/BookFormViewComponent.cs

@@ -0,0 +1,11 @@
+using HotwiredBooks.Models;
+using HotwiredBooks.ViewModels;
+using Microsoft.AspNetCore.Mvc;
+using MonadicBits;
+
+namespace HotwiredBooks.ViewComponents;
+
+public sealed class BookFormViewComponent : ViewComponent
+{
+    public IViewComponentResult Invoke(Maybe<Book> book) => View(new BookFormViewModel(book));
+}

HotwiredBooks/ViewModels/BookFormViewModel.cs

@@ -0,0 +1,6 @@
+using HotwiredBooks.Models;
+using MonadicBits;
+
+namespace HotwiredBooks.ViewModels;
+
+public sealed record BookFormViewModel(Maybe<Book> Book);

HotwiredBooks/ViewModels/BooksEditViewModel.cs

@@ -0,0 +1,5 @@
+using HotwiredBooks.Models;
+
+namespace HotwiredBooks.ViewModels;
+
+public sealed record BooksEditViewModel(Book Book);

HotwiredBooks/Views/Books/Edit.cshtml

@@ -0,0 +1,10 @@
+@using HotwiredBooks.Extensions
+@using MonadicBits
+@model HotwiredBooks.ViewModels.BooksEditViewModel
+@{
+    Layout = null;
+}
+
+<turbo-frame id="@Html.DomId(Model.Book)">
+    <vc:book-form book="@Model.Book.Just()"/>
+</turbo-frame>

HotwiredBooks/Views/Shared/Components/Book/Default.cshtml

@@ -9,7 +9,7 @@
             <strong>Author:</strong> @Model.Author
         </p>
         <div class="action-left">
-            <form asp-page="/Index/Edit" method="get" class="button_to">
+            <form asp-controller="Books" asp-action="Edit" asp-route-id="@Model.Id" method="get" class="button_to">
                 <button class="button secondary" type="submit">Edit this book</button>
             </form>
         </div>

HotwiredBooks/Views/Shared/Components/BookForm/Default.cshtml

@@ -0,0 +1,34 @@
+@model HotwiredBooks.ViewModels.BookFormViewModel
+
+@{
+    var id = Model.Book.Map(book => book.Id).Match(id => id.ToString(), () => string.Empty);
+    var action = Model.Book.Match(_ => "Update", () => "Create");
+    var method = Model.Book.Match(_ => "put", () => "post");
+    var title = Model.Book.Map(book => book.Title).Match(title => title, () => string.Empty);
+    var author = Model.Book.Map(book => book.Author).Match(author => author, () => string.Empty);
+}
+
+<form asp-controller="Books"
+      asp-action="@action"
+      asp-route-id="@id"
+      method="@method"
+      accept-charset="UTF-8"
+      class="book-form">
+    <div class="form-field title">
+        <label style="display: block" for="title">Title</label>
+        <input type="text" name="title" id="title" value="@title"/>
+    </div>
+
+    <div class="form-field author">
+        <label style="display: block" for="author">Author</label>
+        <input type="text" name="author" id="author" value="@author"/>
+    </div>
+
+    <div class="action-left">
+        <a class="button secondary" asp-controller="Books" asp-action="Index">Cancel</a>
+    </div>
+
+    <div class="action-right">
+        <input type="submit" name="commit" value="Submit" class="button primary" data-disable-with="Submit"/>
+    </div>
+</form>