Initial commit - Common.RCL

Common/SingleFileUpload.razor

@@ -0,0 +1,104 @@
+@inject HttpClient Http
+
+
+
+<div>
+    @if (!string.IsNullOrEmpty(Image))
+    {
+        <div>
+            <img src="@Image" />
+        </div>
+        <button @onclick="RemovePhoto" class="btn btn-primary">Remove</button>
+
+    }
+
+    <InputFile OnChange="FileChanged" Accept="@Accept"></InputFile>
+</div>
+
+
+@code {
+
+    [Parameter]
+    public string? Image { get; set; }
+
+    [Parameter]
+    public string? UploadLink { get; set; }
+
+    [Parameter]
+    public string? Accept { get; set; }
+
+
+
+    IBrowserFile selectedFile;
+
+    private CancellationTokenSource? _cancellationTokenSource;
+
+
+    protected override async Task OnInitializedAsync()
+    {
+
+    }
+
+    void RemovePhoto()
+    {
+        Image = "";
+        selectedFile = null;
+    }
+
+
+    async Task FileChanged(InputFileChangeEventArgs e)
+    {
+        selectedFile = e.File;
+        await GenerateBase64Preview(selectedFile);
+    }
+
+
+    public async Task<string> UploadFile()
+    {
+        var multipartContent = new MultipartFormDataContent();
+        if (selectedFile != null)
+        {
+            var fileContent = new StreamContent(selectedFile.OpenReadStream());
+
+            fileContent.Headers.ContentType = new MediaTypeHeaderValue(selectedFile.ContentType);
+
+            multipartContent.Add(fileContent, "file", selectedFile.Name);
+
+            var response = await Http.PostAsync(UploadLink, multipartContent);
+
+            return await response.Content.ReadFromJsonAsync<string>();
+            @* new ProgressMessageHandler(progress =>
+{
+_uploadProgress = progress;
+StateHasChanged();
+}) *@
+        }
+        return "";
+    }
+
+
+    private async Task GenerateBase64Preview(IBrowserFile file)
+    {
+        try
+        {
+            // Resize image for preview (optional)
+            var resizedImage = await file.RequestImageFileAsync(
+            file.ContentType,
+            maxWidth: 800,
+            maxHeight: 800);
+
+            // Convert to base64
+            using var stream = resizedImage.OpenReadStream(maxAllowedSize: file.Size);
+            using var memoryStream = new MemoryStream();
+            await stream.CopyToAsync(memoryStream);
+            Image = $"data:{file.ContentType};base64,{Convert.ToBase64String(memoryStream.ToArray())}";
+            @* ImageContentType = file.ContentType; *@
+            StateHasChanged();
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Error generating preview: {ex.Message}");
+        }
+    }
+
+}