Movie Detail (#3)

* Implemented Movie Detail
* Implemented basic favorites

Reviewed-on: #3
Co-authored-by: Berack96 <giacomobertolazzi7@gmail.com>
Co-committed-by: Berack96 <giacomobertolazzi7@gmail.com>

Services/ManageFavorite.cs

@@ -0,0 +1,63 @@
+
+
+/// <summary>
+/// Service to manage favorite movies using local storage
+/// </summary>
+/// <param name="localStorage">The local storage service</param>
+class ManageFavorite(Blazored.LocalStorage.ILocalStorageService localStorage)
+{
+    // Inject the local storage service
+    private readonly Blazored.LocalStorage.ILocalStorageService LocalStorage = localStorage;
+    private readonly List<string> MoviesIDs = [];
+
+    /// <summary>
+    /// Load favorite movies from local storage
+    /// Use Immediately after service instantiation otherwise the list will be empty
+    /// </summary>
+    /// <returns></returns>
+    public async Task LoadFavorites()
+    {
+        var favorites = await LocalStorage.GetItemAsync<List<string>>("favorite") ?? [];
+        MoviesIDs.Clear();
+        MoviesIDs.AddRange(favorites);
+    }
+
+    /// <summary>
+    /// Check if a movie is favorite or not
+    /// </summary>
+    /// <param name="movieID">The movie ID to check</param>
+    /// <returns>True if the movie is favorite, otherwise false</returns>
+    public bool IsFavorite(string movieID)
+    {
+        return MoviesIDs.Contains(movieID);
+    }
+
+    /// <summary>
+    /// Toggle favorite status of a movie (by ID)
+    /// </summary>
+    /// <param name="movieID">The movie ID to toggle</param>
+    /// <returns>The new favorite status</returns>
+    public async Task<bool> ToggleFavoriteMovie(string movieID)
+    {
+        if (!IsFavorite(movieID))
+        {
+            MoviesIDs.Add(movieID);
+        }
+        else
+        {
+            MoviesIDs.RemoveAll(id => id == movieID);
+        }
+
+        await LocalStorage.SetItemAsync("favorite", MoviesIDs);
+        return IsFavorite(movieID);
+    }
+
+    /// <summary>
+    /// Get the list of favorite movie IDs
+    /// </summary>
+    /// <returns>The list of favorite movie IDs</returns>
+    public List<string> GetFavoriteMovies()
+    {
+        return MoviesIDs;
+    }
+}