DMS Layout mit Fehlern

Components/Layout/NavMenu.razor

@@ -7,6 +7,10 @@
 
     <MudNavLink Href="test" Match="NavLinkMatch.Prefix" Icon="@Icons.Material.Filled.List">Test</MudNavLink>
     <MudNavLink Href="storage" Match="NavLinkMatch.Prefix" Icon="@Icons.Material.Filled.Cloud">Storage</MudNavLink>
+
+    <MudNavLink Href="/dms" Match="NavLinkMatch.Prefix" Icon="@Icons.Material.Filled.Dashboard">DMS</MudNavLink>
+    <MudNavLink Href="/dms/list" Icon="@Icons.Material.Filled.List">Dokumente</MudNavLink>
+    <MudNavLink Href="/dms/upload" Icon="@Icons.Material.Filled.Upload">Upload</MudNavLink>
 </MudNavMenu>
 
 

Components/Pages/DmsDashboard.razor

@@ -0,0 +1,167 @@
+@page "/dms"
+@using MudBlazor
+@using Pldpro.Web.UI.Models
+@inject Pldpro.Web.UI.Services.IDocumentClient Client
+@inject NavigationManager Nav
+
+<PageTitle>DMS</PageTitle>
+
+<MudStack Spacing="3">
+    <!-- Kopfzeile: Titel, Bucket-Auswahl und Aktionen -->
+    <MudStack Row="true" AlignItems=AlignItems.Center Spacing="2">
+        <MudText Typo="Typo.h4">Dokumenten-Management</MudText>
+        <MudSpacer />
+        <MudSelect T="string" @bind-Value="_bucket" Label="Bucket" Dense="true" Style="min-width:240px">
+            @foreach (var b in _buckets)
+            {
+                <MudSelectItem Value="@b">@b</MudSelectItem>
+            }
+        </MudSelect>
+        <MudButton Variant="Variant.Outlined" OnClick="Reload" StartIcon="@Icons.Material.Filled.Refresh">
+            Aktualisieren
+        </MudButton>
+        <MudButton Variant="Variant.Filled" Color="Color.Primary"
+                   OnClick="@(() => Nav.NavigateTo("/dms/upload"))"
+                   StartIcon="@Icons.Material.Filled.CloudUpload">
+            Upload
+        </MudButton>
+        <MudButton Variant="Variant.Outlined"
+                   OnClick="@(() => Nav.NavigateTo("/dms/list"))"
+                   StartIcon="@Icons.Material.Filled.List">
+            Zur Liste
+        </MudButton>
+    </MudStack>
+
+    <!-- Kennzahlen -->
+    <MudGrid>
+        <MudItem xs="12" md="3">
+            <MudPaper Class="pa-4">
+                <MudText Typo="Typo.subtitle1">Gesamt</MudText>
+                <MudText Typo="Typo.h5">@_total.ToString("N0")</MudText>
+            </MudPaper>
+        </MudItem>
+        <MudItem xs="12" md="3">
+            <MudPaper Class="pa-4">
+                <MudText Typo="Typo.subtitle1">Eingegangen</MudText>
+                <MudText Typo="Typo.h5">@_eingegangen.ToString("N0")</MudText>
+            </MudPaper>
+        </MudItem>
+        <MudItem xs="12" md="3">
+            <MudPaper Class="pa-4">
+                <MudText Typo="Typo.subtitle1">Freigegeben</MudText>
+                <MudText Typo="Typo.h5">@_freigegeben.ToString("N0")</MudText>
+            </MudPaper>
+        </MudItem>
+        <MudItem xs="12" md="3">
+            <MudPaper Class="pa-4">
+                <MudText Typo="Typo.subtitle1">Bezahlt</MudText>
+                <MudText Typo="Typo.h5">@_bezahlt.ToString("N0")</MudText>
+            </MudPaper>
+        </MudItem>
+    </MudGrid>
+
+    <!-- Zuletzt hinzugefügt + Filter -->
+    <MudPaper Class="pa-4">
+        <MudStack Row="true" AlignItems=AlignItems.Center Spacing="2">
+            <MudText Typo="Typo.h6">Zuletzt hinzugefügt</MudText>
+            <MudSpacer />
+            <MudTextField @bind-Value="_query"
+                          Placeholder="Suche (optional)"
+                          Adornment="Adornment.Start"
+                          AdornmentIcon="@Icons.Material.Filled.Search"
+                          Immediate="true" />
+            <MudTextField @bind-Value="_prefix" Placeholder="Pfad-Prefix (optional, z. B. rechnungen/2026)" />
+            <MudButton Variant="Variant.Outlined" OnClick="Reload" StartIcon="@Icons.Material.Filled.Search">
+                Filtern
+            </MudButton>
+        </MudStack>
+
+        <MudTable Items="_latest" Dense="true" Hover="true" Class="mt-3">
+            <HeaderContent>
+                <MudTh>Datei</MudTh>
+                <MudTh>Pfad</MudTh>
+                <MudTh>Größe</MudTh>
+                <MudTh>Geändert</MudTh>
+                <MudTh></MudTh>
+            </HeaderContent>
+            <RowTemplate>
+                <MudTd>@context.FileName</MudTd>
+                <MudTd>@context.PathPrefix</MudTd>
+                <MudTd>@(context.Size?.ToString("N0"))</MudTd>
+                <MudTd>@context.LastModified</MudTd>
+                <MudTd Align="TableCellAlign.Right">
+                    <MudTooltip Text="Details">
+                        <MudIconButton Icon="@Icons.Material.Filled.Description"
+                                       OnClick="@(() => Nav.NavigateTo($"/dms/detail/{Uri.EscapeDataString(context.Bucket)}/{EncodeKeyForPath(context.Key)}"))" />
+                    </MudTooltip>
+                    <MudTooltip Text="Download">
+                        <MudIconButton Icon="@Icons.Material.Filled.Download"
+                                       OnClick="@(() => Download(context))" />
+                    </MudTooltip>
+                </MudTd>
+            </RowTemplate>
+        </MudTable>
+    </MudPaper>
+</MudStack>
+
+@code {
+    private List<string> _buckets = new();
+    private string? _bucket;
+
+    private string? _query;
+    private string? _prefix;
+
+    private int _total;
+    private int _eingegangen;
+    private int _freigegeben;
+    private int _bezahlt;
+
+    private List<DocumentListItem> _latest = new();
+
+    protected override async Task OnInitializedAsync()
+    {
+        _buckets = (await Client.ListBucketsAsync()).ToList();
+        _bucket = _buckets.FirstOrDefault();
+        await Reload();
+    }
+
+    private async Task Reload()
+    {
+        if (string.IsNullOrWhiteSpace(_bucket))
+        {
+            _total = _eingegangen = _freigegeben = _bezahlt = 0;
+            _latest = new();
+            StateHasChanged();
+            return;
+        }
+
+        // Kennzahlen: einmal komplette Liste (für kleine Datenmengen ok)
+        var (allItems, total) = await Client.SearchAsync(_bucket!, _query, _prefix, 0, int.MaxValue);
+        _total = total;
+
+        // Aktuell sind Status nur UI-intern; wenn später persistiert, hier echte Counts laden.
+        _eingegangen = allItems.Count(i => i.Status == DocumentStatus.Eingegangen);
+        _freigegeben = allItems.Count(i => i.Status == DocumentStatus.Freigegeben);
+        _bezahlt = allItems.Count(i => i.Status == DocumentStatus.Bezahlt);
+
+        // Letzte 10
+        var (latest, _) = await Client.SearchAsync(_bucket!, _query, _prefix, 0, 10);
+        _latest = latest
+            .OrderByDescending(i => i.LastModified ?? DateTime.MinValue)
+            .Take(10)
+            .ToList();
+
+        StateHasChanged();
+    }
+
+    private void Download(DocumentListItem item)
+    {
+        var url = Client.GetDownloadUrl(item.Bucket, item.Key);
+        Nav.NavigateTo(url, forceLoad: true);
+    }
+
+    private static string EncodeKeyForPath(string key)
+        => string.Join("/", (key ?? string.Empty)
+            .Split('/', StringSplitOptions.RemoveEmptyEntries)
+            .Select(Uri.EscapeDataString));
+}

Components/Pages/DmsDetail.razor

@@ -0,0 +1,159 @@
+@page "/dms/detail/{Bucket}/{*Key}"
+@using MudBlazor
+@using Pldpro.Web.UI.Models
+@inject Pldpro.Web.UI.Services.IDocumentClient Client
+@inject NavigationManager Nav
+@inject IDialogService Dialogs
+@inject ISnackbar Snackbar
+
+<PageTitle>Dokument</PageTitle>
+
+@if (_loading)
+{
+    <MudStack AlignItems=AlignItems.Center Justify=Justify.Center Class="pa-6">
+        <MudProgressCircular Indeterminate="true" />
+    </MudStack>
+}
+else if (_doc is null)
+{
+    <MudPaper Class="pa-4">
+        <MudAlert Severity="Severity.Error">
+            Dokument nicht gefunden.
+        </MudAlert>
+        <MudButton Variant="Variant.Outlined" OnClick="Back" Class="mt-3">Zurück</MudButton>
+    </MudPaper>
+}
+else
+{
+    <MudStack Spacing="2">
+        <!-- Kopfzeile -->
+        <MudStack Row="true" AlignItems=AlignItems.Center Spacing="2">
+            <MudText Typo="Typo.h5">@_doc.FileName</MudText>
+            <MudSpacer />
+            <MudButton Variant="Variant.Outlined"
+                       StartIcon="@Icons.Material.Filled.ArrowBack"
+                       OnClick="Back">
+                Zurück
+            </MudButton>
+        </MudStack>
+
+        <MudGrid>
+            <!-- Vorschau (Platzhalter) -->
+            <MudItem xs="12" md="7">
+                <MudPaper Class="pa-3" Elevation="1">
+                    <MudText Typo="Typo.subtitle1">Vorschau</MudText>
+                    <MudDivider Class="my-2" />
+                    <MudAlert Severity="Severity.Info">
+                        PDF‑Vorschau Platzhalter – später PDF.js/Viewer integrieren.
+                    </MudAlert>
+                </MudPaper>
+            </MudItem>
+
+            <!-- Details & Aktionen -->
+            <MudItem xs="12" md="5">
+                <MudPaper Class="pa-3" Elevation="1">
+                    <MudText Typo="Typo.subtitle1">Details</MudText>
+                    <MudDivider Class="my-2" />
+
+                    <!-- Nicht-generische Tabelle -->
+                    <MudSimpleTable Dense="true">
+                        <thead>
+                            <tr>
+                                <th>Feld</th>
+                                <th>Wert</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            <tr><td>Bucket</td><td>@_doc.Bucket</td></tr>
+                            <tr><td>Key</td><td>@_doc.Key</td></tr>
+                            <tr><td>Dateiname</td><td>@_doc.FileName</td></tr>
+                            <tr><td>Pfad</td><td>@_doc.PathPrefix</td></tr>
+                            <tr><td>Größe</td><td>@(_doc.Size?.ToString("N0")) Bytes</td></tr>
+                            <tr><td>Geändert</td><td>@_doc.LastModified</td></tr>
+                        </tbody>
+                    </MudSimpleTable>
+
+                    <MudStack Row="true" Spacing="1" Class="mt-3">
+                        <MudButton Color="Color.Primary"
+                                   Variant="Variant.Filled"
+                                   StartIcon="@Icons.Material.Filled.Download"
+                                   OnClick="Download">
+                            Download
+                        </MudButton>
+
+                        <MudButton Color="Color.Error"
+                                   Variant="Variant.Text"
+                                   StartIcon="@Icons.Material.Filled.Delete"
+                                   OnClick="Delete">
+                            Löschen
+                        </MudButton>
+                    </MudStack>
+                </MudPaper>
+            </MudItem>
+
+        </MudGrid>
+    </MudStack>
+}
+
+@code {
+    [Parameter] public string Bucket { get; set; } = default!;
+    [Parameter] public string Key { get; set; } = default!; // Catch-all wird von Blazor decodiert
+
+    private DocumentDetail? _doc;
+    private bool _loading;
+
+    protected override async Task OnParametersSetAsync()
+    {
+        _loading = true;
+        try
+        {
+            _doc = await Client.GetAsync(Bucket, Key);
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"Fehler beim Laden: {ex.Message}", Severity.Error);
+            _doc = null;
+        }
+        finally
+        {
+            _loading = false;
+        }
+    }
+
+    private void Back() => Nav.NavigateTo("/dms/list");
+
+    private Task Download()
+    {
+        if (_doc is null) return Task.CompletedTask;
+        var url = Client.GetDownloadUrl(_doc.Bucket, _doc.Key);
+        Nav.NavigateTo(url, forceLoad: true);
+        return Task.CompletedTask;
+    }
+
+    private async Task Delete()
+    {
+        if (_doc is null) return;
+
+        // Du kannst alternativ ShowMessageBox verwenden, wenn du keinen eigenen ConfirmDialog nutzen willst:
+        var confirm = await Dialogs.ShowMessageBox(
+            title: "Dokument löschen",
+            markupMessage: (MarkupString)$"Möchten Sie '<b>{_doc.FileName}</b>' endgültig löschen?",
+            yesText: "Löschen",
+            cancelText: "Abbrechen",
+            options: new DialogOptions { CloseOnEscapeKey = true });
+
+        if (confirm == true)
+        {
+            try
+            {
+                await Client.DeleteAsync(_doc.Bucket, _doc.Key);
+                Snackbar.Add("Dokument gelöscht.", Severity.Success);
+                Nav.NavigateTo("/dms/list");
+            }
+            catch (Exception ex)
+            {
+                Snackbar.Add($"Löschen fehlgeschlagen: {ex.Message}", Severity.Error);
+            }
+        }
+    }
+}

Components/Pages/DmsList.razor

@@ -0,0 +1,94 @@
+@page "/dms/list"
+@using MudBlazor
+@using Pldpro.Web.UI.Models
+@inject Pldpro.Web.UI.Services.IDocumentClient Client
+@inject NavigationManager Nav
+
+<MudPaper Class="pa-4">
+    <MudStack Row="true" Spacing="2" AlignItems=AlignItems.Center>
+        <MudSelect T="string" @bind-Value="_bucket" Label="Bucket" Dense="true" Style="min-width:220px" Required="true">
+            @foreach (var b in _buckets)
+            {
+                <MudSelectItem Value="@b">@b</MudSelectItem>
+            }
+        </MudSelect>
+        <MudTextField @bind-Value="_prefix" Placeholder="Pfad-Prefix (optional, z. B. rechnungen/2026)" />
+        <MudTextField @bind-Value="_query" Placeholder="Suche (Datei/Ordner)"
+                      Adornment="Adornment.Start" AdornmentIcon="@Icons.Material.Filled.Search" Immediate="true" />
+        <MudSpacer />
+        <MudButton Variant="Variant.Outlined" OnClick="Reload" StartIcon="@Icons.Material.Filled.Search">Suchen</MudButton>
+        <MudButton Variant="Variant.Filled" OnClick="@(() => Nav.NavigateTo("/dms/upload"))"
+                   StartIcon="@Icons.Material.Filled.CloudUpload">Upload</MudButton>
+    </MudStack>
+
+    <!-- WICHTIG: T="DocumentListItem" angeben -->
+    <MudTable T="DocumentListItem" Items="_items" Dense="true" Hover="true" Class="mt-3">
+        <HeaderContent>
+            <MudTh>Datei</MudTh>
+            <MudTh>Bucket</MudTh>
+            <MudTh>Pfad</MudTh>
+            <MudTh>Größe</MudTh>
+            <MudTh>Geändert</MudTh>
+            <MudTh></MudTh>
+        </HeaderContent>
+
+        <!-- @context ist vom Typ DocumentListItem -->
+        <RowTemplate>
+            <MudTd DataLabel="Datei">@context.FileName</MudTd>
+            <MudTd DataLabel="Bucket">@context.Bucket</MudTd>
+            <MudTd DataLabel="Pfad">@context.PathPrefix</MudTd>
+            <MudTd DataLabel="Größe">@context.Size?.ToString("N0")</MudTd>
+            <MudTd DataLabel="Geändert">@context.LastModified</MudTd>
+            <MudTd Align="TableCellAlign.Right">
+                <MudButton Variant="Variant.Text"
+                           OnClick="@(() => Nav.NavigateTo($"/dms/detail/{Uri.EscapeDataString(context.Bucket)}/{EncodeKeyForPath(context.Key)}"))">
+                    Details
+                </MudButton>
+            </MudTd>
+        </RowTemplate>
+
+        <PagerContent>
+            <MudTablePager PageSizeOptions="new int[] { 10, 25, 50 }" @bind-PageSize="_pageSize" />
+        </PagerContent>
+    </MudTable>
+
+    <MudStack Row="true" Spacing="1" AlignItems=AlignItems.Center Justify=Justify.Center Class="mt-2">
+        <MudButton Variant="Variant.Outlined" Disabled="@(_page == 0)" OnClick="Prev">Zurück</MudButton>
+        <MudText>Seite @(_page + 1)</MudText>
+        <MudButton Variant="Variant.Outlined" Disabled="@(((_page + 1) * _pageSize) >= _total)" OnClick="Next">Weiter</MudButton>
+    </MudStack>
+</MudPaper>
+
+@code {
+    private List<string> _buckets = new();
+    private string? _bucket;
+    private string? _prefix;
+    private string? _query;
+
+    private int _page = 0, _pageSize = 25, _total = 0;
+    private List<DocumentListItem> _items = new();
+
+    protected override async Task OnInitializedAsync()
+    {
+        _buckets = (await Client.ListBucketsAsync()).ToList();
+        _bucket = _buckets.FirstOrDefault();
+        if (!string.IsNullOrWhiteSpace(_bucket))
+            await Reload();
+    }
+
+    private async Task Reload()
+    {
+        if (string.IsNullOrWhiteSpace(_bucket)) return;
+        var (items, total) = await Client.SearchAsync(_bucket!, _query, _prefix, _page, _pageSize);
+        _items = items.ToList();       // <- Items ist List<DocumentListItem>
+        _total = total;
+    }
+
+    private async Task Prev() { if (_page > 0) { _page--; await Reload(); } }
+    private async Task Next() { if (((_page + 1) * _pageSize) < _total) { _page++; await Reload(); } }
+
+    private static string EncodeKeyForPath(string key)
+        => string.Join("/", (key ?? string.Empty)
+            .Split('/', StringSplitOptions.RemoveEmptyEntries)
+            .Select(Uri.EscapeDataString));
+}

Components/Pages/DmsUpload.razor

@@ -0,0 +1,94 @@
+@page "/dms/upload"
+@using MudBlazor
+@inject Pldpro.Web.UI.Services.IDocumentClient Client
+@inject NavigationManager Nav
+@inject ISnackbar Snackbar
+
+<PageTitle>Upload</PageTitle>
+
+<MudPaper Class="pa-4">
+    <MudText Typo="Typo.h5" GutterBottom="true">Dokument-Upload</MudText>
+
+    <MudStack Spacing="2">
+        <MudSelect T="string" @bind-Value="_bucket" Label="Bucket" Dense="true" Style="min-width:260px" Required="true" RequiredError="Bitte Bucket wählen">
+            @foreach (var b in _buckets)
+            {
+                <MudSelectItem Value="@b">@b</MudSelectItem>
+            }
+        </MudSelect>
+
+        <MudTextField @bind-Value="_path"
+                      Placeholder="Pfad (optional, z. B. rechnungen/2026)"
+                      Variant="Variant.Outlined"
+                      Adornment="Adornment.Start"
+                      AdornmentIcon="@Icons.Material.Filled.Folder" />
+
+        <InputFile OnChange="OnFilesSelected" multiple />
+
+
+        <MudList T="string" Dense="true">
+            @foreach (var msg in _messages)
+            {
+                <MudListItem>@msg</MudListItem>
+            }
+        </MudList>
+
+
+        <MudStack Row="true" Spacing="2">
+            <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.List" OnClick="@(() => Nav.NavigateTo("/dms/list"))">
+                Zur Liste
+            </MudButton>
+            <MudButton Variant="Variant.Outlined" StartIcon="@Icons.Material.Filled.Dashboard" OnClick="@(() => Nav.NavigateTo("/dms"))">
+                Dashboard
+            </MudButton>
+        </MudStack>
+    </MudStack>
+</MudPaper>
+
+@code {
+    private List<string> _buckets = new();
+    private string? _bucket;
+    private string? _path;
+
+    private RenderFragment? _result;
+    private const long StreamLimit = 512L * 1024 * 1024;
+
+    protected override async Task OnInitializedAsync()
+    {
+        try
+        {
+            _buckets = (await Client.ListBucketsAsync()).ToList();
+            _bucket = _buckets.FirstOrDefault();
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"Buckets konnten nicht geladen werden: {ex.Message}", Severity.Error);
+        }
+    }
+
+
+    private readonly List<string> _messages = new();
+
+    private async Task OnFilesSelected(InputFileChangeEventArgs e)
+    {
+        if (string.IsNullOrWhiteSpace(_bucket))
+        {
+            Snackbar.Add("Bitte zuerst einen Bucket auswählen.", Severity.Warning);
+            return;
+        }
+
+        foreach (var f in e.GetMultipleFiles())
+        {
+            try
+            {
+                await Client.UploadAsync(_bucket!, _path, f, StreamLimit);
+                _messages.Add($"hochgeladen: {f.Name} ({f.Size:N0} Bytes)");
+            }
+            catch (Exception ex)
+            {
+                _messages.Add($"Fehler bei '{f.Name}': {ex.Message}");
+            }
+        }
+   
+    }
+}

Components/shared/ConfirmDialog.razor

@@ -0,0 +1,18 @@
+@using MudBlazor
+<MudDialog>
+    <DialogContent>
+        <MudText Typo="Typo.h6">@Title</MudText>
+        <MudText Class="mt-2">@Message</MudText>
+    </DialogContent>
+    <DialogActions>
+        <MudButton OnClick="() => MudDialog.Cancel()" Variant="Variant.Outlined" Color="Color.Default">Abbrechen</MudButton>
+        <MudButton OnClick="() => MudDialog.Close(DialogResult.Ok(true))" Variant="Variant.Filled" Color="Color.Error">OK</MudButton>
+    </DialogActions>
+</MudDialog>
+
+@code {
+    [CascadingParameter] IMudDialogInstance MudDialog { get; set; } = default!;
+    [Parameter] public string Title { get; set; } = "Bestätigen";
+    [Parameter] public string Message { get; set; } = "Sind Sie sicher?";
+}
+``

Components/shared/StatusChip.razor

@@ -0,0 +1,32 @@
+@using Pldpro.Web.UI.Models
+@using MudBlazor
+
+<MudChip T="string"
+         Value="@Text"
+         Color="@Color"
+         Variant="Variant.Filled"
+         Label="true"
+         DisableRipple="true"
+         Clickable="false">
+    @Text
+</MudChip>
+
+@code {
+    [Parameter] public DocumentStatus Status { get; set; }
+
+    private string Text => Status switch
+    {
+        DocumentStatus.Eingegangen => "Eingegangen",
+        DocumentStatus.Freigegeben => "Freigegeben",
+        DocumentStatus.Bezahlt => "Bezahlt",
+        _ => Status.ToString()
+    };
+
+    private Color Color => Status switch
+    {
+        DocumentStatus.Eingegangen => Color.Info,
+        DocumentStatus.Freigegeben => Color.Success,
+        DocumentStatus.Bezahlt => Color.Primary,
+        _ => Color.Default
+    };
+}

Models/UI/DocumentModels.cs

@@ -0,0 +1,20 @@
+namespace Pldpro.Web.UI.Models;
+
+public enum DocumentStatus { Eingegangen, Freigegeben, Bezahlt }
+
+public class DocumentListItem
+{
+    public string Bucket { get; set; } = string.Empty;
+    public string Key { get; set; } = string.Empty;            // z.B. "rechnungen/2026/INV-123.pdf"
+    public string FileName => Key.Split('/', StringSplitOptions.RemoveEmptyEntries).LastOrDefault() ?? Key;
+    public long? Size { get; set; }
+    public DateTime? LastModified { get; set; }
+    public DocumentStatus Status { get; set; } = DocumentStatus.Eingegangen; // (UI-only)
+    public string PathPrefix => Key.Contains('/') ? string.Join('/', Key.Split('/').SkipLast(1)) : string.Empty;
+}
+
+public sealed class DocumentDetail : DocumentListItem
+{
+    // Platzhalter für spätere Rechnungsfelder
+    public string? Notes { get; set; }
+}

Pldpro.Web.csproj

@@ -17,4 +17,9 @@
     <PackageReference Include="OpenIddict.Validation.AspNetCore" Version="7.2.0" />
     <PackageReference Include="MySqlConnector" Version="2.*" />
   </ItemGroup>
+
+
+  <ItemGroup>
+    <Folder Include="Components\Shared\" />
+  </ItemGroup>
 </Project>

Program.cs

@@ -61,7 +61,7 @@ builder.Services.AddSingleton<IAmazonS3>(sp =>
 
 // Domain-Service
 builder.Services.AddScoped<IStorageService, S3StorageService>();
-
+builder.Services.AddScoped<Pldpro.Web.UI.Services.IDocumentClient, Pldpro.Web.UI.Services.StorageDocumentClient>();
 var app = builder.Build();
 
 

Services/UI/IDocumentClient.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore.Components.Forms;
+using Pldpro.Web.UI.Models;
+
+namespace Pldpro.Web.UI.Services;
+
+public interface IDocumentClient
+{
+    Task<IReadOnlyList<string>> ListBucketsAsync(CancellationToken ct = default);
+
+    Task<(IReadOnlyList<DocumentListItem> Items, int Total)> SearchAsync(
+        string bucket, string? query, string? pathPrefix, int page, int pageSize, CancellationToken ct = default);
+
+    Task<DocumentDetail?> GetAsync(string bucket, string key, CancellationToken ct = default);
+
+    Task UploadAsync(string bucket, string? pathPrefix, IBrowserFile file, long streamLimit, CancellationToken ct = default);
+
+    Task DeleteAsync(string bucket, string key, CancellationToken ct = default);
+
+    string GetDownloadUrl(string bucket, string key);
+}

Services/UI/StorageDocumentClient.cs

@@ -0,0 +1,95 @@
+using Microsoft.AspNetCore.Components.Forms;
+using Pldpro.Web.UI.Models;
+using System.Net.Http.Json;
+
+namespace Pldpro.Web.UI.Services;
+
+public sealed class StorageDocumentClient(IHttpClientFactory factory) : IDocumentClient
+{
+    private readonly HttpClient _http = factory.CreateClient("AppApi");
+
+    private sealed record BucketVm(string Name, DateTime? CreationDate);
+    private sealed record ObjectVm(string Key, long? Size, DateTime? LastModified);
+
+    public async Task<IReadOnlyList<string>> ListBucketsAsync(CancellationToken ct = default)
+    {
+        var list = await _http.GetFromJsonAsync<List<BucketVm>>("/api/storage/buckets", ct) ?? new();
+        return list.Select(b => b.Name).ToList();
+    }
+
+    public async Task<(IReadOnlyList<DocumentListItem> Items, int Total)> SearchAsync(
+        string bucket, string? query, string? pathPrefix, int page, int pageSize, CancellationToken ct = default)
+    {
+        var objs = await _http.GetFromJsonAsync<List<ObjectVm>>($"/api/storage/buckets/{Uri.EscapeDataString(bucket)}/objects", ct) ?? new();
+
+        IEnumerable<DocumentListItem> q = objs.Select(o => new DocumentListItem
+        {
+            Bucket = bucket,
+            Key = o.Key,
+            Size = o.Size,
+            LastModified = o.LastModified
+        });
+
+        if (!string.IsNullOrWhiteSpace(pathPrefix))
+            q = q.Where(d => d.Key.StartsWith(pathPrefix!.Trim('/') + "/", StringComparison.OrdinalIgnoreCase));
+
+        if (!string.IsNullOrWhiteSpace(query))
+        {
+            q = q.Where(d =>
+                d.FileName.Contains(query, StringComparison.OrdinalIgnoreCase) ||
+                d.PathPrefix.Contains(query, StringComparison.OrdinalIgnoreCase));
+        }
+
+        var total = q.Count();
+        var pageItems = q
+            .OrderByDescending(d => d.LastModified ?? DateTime.MinValue)
+            .Skip(page * pageSize)
+            .Take(pageSize)
+            .ToList();
+
+        return (pageItems, total);
+    }
+
+    public async Task<DocumentDetail?> GetAsync(string bucket, string key, CancellationToken ct = default)
+    {
+        // Da es keinen Einzel-Endpoint gibt, holen wir die Liste und picken das Objekt.
+        var (items, _) = await SearchAsync(bucket, null, null, 0, int.MaxValue, ct);
+        var d = items.FirstOrDefault(x => string.Equals(x.Key, key, StringComparison.Ordinal));
+        return d is null ? null : new DocumentDetail
+        {
+            Bucket = d.Bucket,
+            Key = d.Key,
+            Size = d.Size,
+            LastModified = d.LastModified,
+            Status = d.Status
+        };
+    }
+
+    public async Task UploadAsync(string bucket, string? pathPrefix, IBrowserFile file, long streamLimit, CancellationToken ct = default)
+    {
+        using var stream = file.OpenReadStream(streamLimit);
+        using var content = new MultipartFormDataContent();
+        content.Add(new StreamContent(stream), "file", file.Name);
+        if (!string.IsNullOrWhiteSpace(pathPrefix))
+            content.Add(new StringContent(pathPrefix!.Trim('/')), "path");
+
+        var resp = await _http.PostAsync($"/api/storage/buckets/{Uri.EscapeDataString(bucket)}/upload", content, ct);
+        resp.EnsureSuccessStatusCode();
+    }
+
+    public async Task DeleteAsync(string bucket, string key, CancellationToken ct = default)
+    {
+        var url = $"/api/storage/buckets/{Uri.EscapeDataString(bucket)}/objects/{EncodeKeyForPath(key)}";
+        var resp = await _http.DeleteAsync(url, ct);
+        resp.EnsureSuccessStatusCode();
+    }
+
+    public string GetDownloadUrl(string bucket, string key)
+        => $"/api/storage/buckets/{Uri.EscapeDataString(bucket)}/download/{EncodeKeyForPath(key)}";
+
+    // Pfadsegment-weise encodieren: Slashes bleiben Trennzeichen
+    private static string EncodeKeyForPath(string key)
+        => string.Join("/", (key ?? string.Empty)
+            .Split('/', StringSplitOptions.RemoveEmptyEntries)
+            .Select(Uri.EscapeDataString));
+}