Implemented importing and exporting of stars

MoonlightServers.Frontend/UI/Views/Admin/Stars/Index.razor

@@ -6,20 +6,32 @@
 @using MoonCore.Blazor.Tailwind.DataTable
 @using MoonlightServers.Shared.Http.Responses.Admin.Stars
 @using MoonCore.Blazor.Tailwind.Components
+@using MoonCore.Blazor.Tailwind.Toasts
+@using MoonCore.Exceptions
+@using Moonlight.Client.Services
 
 @inject HttpApiClient ApiClient
+@inject DownloadService DownloadService
+@inject ToastService ToastService
 
 <div class="mb-3">
     <NavTabs Index="3" Names="@UiConstants.AdminNavNames" Links="@UiConstants.AdminNavLinks"/>
 </div>
 
-<MinimalCrud TItem="StarDetailResponse" OnConfigure="OnConfigure">
+<MinimalCrud @ref="Crud" TItem="StarDetailResponse" OnConfigure="OnConfigure">
     <ChildContent>
         <DataColumn TItem="StarDetailResponse" Field="@(x => x.Id)" Title="Id" IsSortable="true"/>
         <DataColumn TItem="StarDetailResponse" Field="@(x => x.Name)" Title="Name" IsSortable="true"/>
         <DataColumn TItem="StarDetailResponse" Field="@(x => x.Version)" Title="Version" IsSortable="true"/>
         <DataColumn TItem="StarDetailResponse" Field="@(x => x.Author)" Title="Author"/>
     </ChildContent>
+    <Actions>
+        <InputFile id="import-file" hidden="" multiple OnChange="OnImportFiles"/>
+        <label for="import-file" class="btn btn-tertiary cursor-pointer">
+            <i class="icon-file-up mr-2"></i>
+            Import
+        </label>
+    </Actions>
     <ItemActions>
         @if (!string.IsNullOrEmpty(context.DonateUrl))
         {
@@ -36,11 +48,18 @@
                 <span class="align-middle">Update</span>
             </a>
         }
+
+        <a href="#" @onclick="() => Export(context)" @onclick:preventDefault class="text-success-500 mr-3">
+            <i class="icon-download align-middle"></i>
+            <span class="align-middle">Export</span>
+        </a>
     </ItemActions>
 </MinimalCrud>
 
 @code
 {
+    private MinimalCrud<StarDetailResponse> Crud;
+    
     private void OnConfigure(MinimalCrudOptions<StarDetailResponse> options)
     {
         options.Title = "Stars";
@@ -51,4 +70,51 @@
         options.UpdateUrl = item => ComponentHelper.GetRouteOfComponent<Update>(item.Id)!;
         options.DeleteFunction = async item => await ApiClient.Delete($"api/admin/servers/stars/{item.Id}");
     }
+
+    private async Task Export(StarDetailResponse star)
+    {
+        var json = await ApiClient.GetString($"api/admin/servers/stars/{star.Id}/export");
+
+        var formattedFileName = star.Name.Replace(" ", "_") + ".json";
+
+        await DownloadService.DownloadString(formattedFileName, json);
+        await ToastService.Success($"Successfully exported '{star.Name}'");
+    }
+
+    private async Task OnImportFiles(InputFileChangeEventArgs eventArgs)
+    {
+        IBrowserFile[] files;
+        
+        if(eventArgs.FileCount == 0)
+            return;
+        else if (eventArgs.FileCount > 1)
+            files = eventArgs.GetMultipleFiles().ToArray();
+        else
+            files = [eventArgs.File];
+
+        foreach (var file in files)
+        {
+            try
+            {
+                if (!file.Name.EndsWith(".json"))
+                {
+                    await ToastService.Danger($"Failed to import '{file.Name}': Only json files are supported");
+                    continue;
+                }
+
+                await using var stream = file.OpenReadStream();
+                var content = new MultipartFormDataContent();
+                content.Add(new StreamContent(stream), "file", file.Name);
+
+                var star = await ApiClient.PostJson<StarDetailResponse>("api/admin/servers/stars/import", content);
+                
+                await ToastService.Success($"Successfully imported '{star.Name}'");
+                await Crud.Refresh(isSilent: false, bypassCache: true);
+            }
+            catch (HttpApiException e)
+            {
+                await ToastService.Danger($"Failed to import '{file.Name}': {e.Title}");
+            }
+        }
+    }
 }