Сохранение громкости плеера

PlaylistShared.Pwa/Components/AudioPlayer.razor

@@ -59,6 +59,7 @@
 
     [Inject] protected IJSRuntime JS { get; set; } = null!;
     [Inject] private TokenStorage TokenStorage { get; set; } = null!;
+    [Inject] private PlayerStorage PlayerStorage { get; set; } = null!;
     [Inject] private AuthenticationStateProvider AuthProvider { get; set; } = null!;
     [Inject] private ISnackbar Snackbar { get; set; } = null!;
 
@@ -76,6 +77,8 @@
         if (firstRender)
         {
             await EnsureAudioModuleAsync();
+            await ChangeVolume(await PlayerStorage.GetVolumeAsync());
+            StateHasChanged();
         }
     }
 
@@ -226,6 +229,8 @@
             var volume = value / 100;
             await _audioElement.InvokeVoidAsync("setVolume", volume);
             _isMuted = false;
+            _currentVolume = value;
+            await PlayerStorage.SetVolumeAsync(value);
             StateHasChanged();
         }
         catch (Exception ex)

PlaylistShared.Pwa/Program.cs

@@ -21,6 +21,7 @@ internal class Program
         });
 
         builder.Services.AddScoped<TokenStorage>();
+        builder.Services.AddScoped<PlayerStorage>();
         builder.Services.AddScoped<AuthStateProvider>();
         builder.Services.AddScoped<AuthenticationStateProvider>(sp => sp.GetRequiredService<AuthStateProvider>());
         builder.Services.AddScoped<ApiClient>();

PlaylistShared.Pwa/Services/PlayerStorage.cs

@@ -0,0 +1,30 @@
+using Microsoft.JSInterop;
+
+namespace PlaylistShared.Pwa.Services;
+
+public class PlayerStorage
+{
+    private readonly IJSRuntime _js;
+    private const string VolumeKey = "audio_player_volume";
+
+    public PlayerStorage(IJSRuntime js) => _js = js;
+
+    public async Task SetVolumeAsync(double volume)
+    {
+        await _js.InvokeVoidAsync("localStorage.setItem", VolumeKey, volume);
+    }
+
+    public async Task<double> GetVolumeAsync()
+    {
+        var volume = await _js.InvokeAsync<string>("localStorage.getItem", VolumeKey);
+
+        if (double.TryParse(volume, out var result))
+        {
+            result = Math.Clamp(result, 0, 100);
+
+            return result;
+        }
+
+        return 0;
+    }
+}