refactor: update BookIngestionModal to use split IEpubMetadataExtractor, add XML docs and IAsyncDisposable
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@@ -1,142 +1,139 @@
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@using Microsoft.AspNetCore.Components.Forms
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@using NexusReader.Application.Abstractions.Services
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@using NexusReader.Application.Queries.Reader
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@inject IEpubService EpubService
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@inject ILogger<BookIngestionModal> Logger
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@implements IAsyncDisposable
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@inject IEpubMetadataExtractor EpubMetadataExtractor
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@if (IsOpen)
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<div class="ingestion-modal @(IsVisible ? "visible" : "")" role="dialog" aria-labelledby="modal-title" aria-modal="true">
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<div class="modal-overlay" @onclick="CloseModal"></div>
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<div class="modal-container">
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<header class="modal-header">
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<NexusTypography Type="h2" id="modal-title">Dodaj nową książkę</NexusTypography>
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<NexusButton Variant="ghost" OnClick="CloseModal" aria-label="Zamknij">
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<NexusIcon Name="close" Size="20" />
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</NexusButton>
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</header>
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<section class="modal-content">
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@if (Metadata == null && !IsParsing)
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{
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<div class="modal-backdrop" @onclick="CloseModal">
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<div class="modal-content glass-panel" @onclick:stopPropagation>
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<div class="modal-header">
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<h2>Add New Book</h2>
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<button class="close-btn" @onclick="CloseModal">
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<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="18" y1="6" x2="6" y2="18"></line><line x1="6" y1="6" x2="18" y2="18"></line></svg>
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</button>
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<div class="upload-zone @(IsDragging ? "dragging" : "")"
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@ondragenter="HandleDragEnter"
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@ondragleave="HandleDragLeave"
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@ondragover:preventDefault
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@ondrop:preventDefault
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@ondrop="HandleDrop">
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<NexusIcon Name="upload" Size="48" />
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<NexusTypography Type="body-large">Przeciągnij plik EPUB tutaj lub</NexusTypography>
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<label class="file-input-label">
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Przeglądaj pliki
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<InputFile OnChange="HandleFileSelected" accept=".epub" />
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</label>
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</div>
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<div class="modal-body">
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<div class="parsing-state shimmer" style="@(IsParsing ? "display:flex;" : "display:none;")">
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<div class="shimmer-content">
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}
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else if (IsParsing)
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{
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<div class="parsing-state">
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<div class="spinner"></div>
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<p>Scanning metadata...</p>
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<NexusTypography Type="body">Analizowanie metadanych pliku...</NexusTypography>
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</div>
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</div>
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<div class="metadata-state" style="@(Metadata != null && !IsParsing ? "display:flex;" : "display:none;")">
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@if (Metadata != null)
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}
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else if (Metadata != null)
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{
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<div class="metadata-preview">
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<div class="cover-wrapper">
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@if (Metadata.CoverImage != null)
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{
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<img src="data:image/jpeg;base64,@Convert.ToBase64String(Metadata.CoverImage)" alt="Okładka @Metadata.Title" />
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}
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else
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{
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<div class="no-cover">
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<NexusIcon Name="book" Size="40" />
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</div>
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}
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</div>
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<div class="metadata-info">
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<h3>@Metadata.Title</h3>
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<p class="author">@Metadata.Author</p>
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</div>
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<NexusTypography Type="h3">@Metadata.Title</NexusTypography>
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<NexusTypography Type="body-muted">@Metadata.Author</NexusTypography>
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<div class="actions">
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<button class="btn btn-primary">Confirm & Upload</button>
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<button class="btn btn-secondary" @onclick="Reset">Cancel</button>
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</div>
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}
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</div>
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<div class="upload-state @(_isDragging ? "drag-over" : "")"
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style="@(!IsParsing && Metadata == null ? "display:flex;" : "display:none;")"
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@ondragenter="OnDragEnter"
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@ondragleave="OnDragLeave">
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<div class="drop-zone">
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<InputFile id="epub-upload" OnChange="HandleFileSelected" accept=".epub" class="file-input-cover" />
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<div class="drop-zone-content">
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<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"></path><polyline points="17 8 12 3 7 8"></polyline><line x1="12" y1="3" x2="12" y2="15"></line></svg>
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<p>Drag and drop your .epub file here</p>
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<span>or click to browse</span>
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</div>
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</div>
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</div>
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@if (!string.IsNullOrEmpty(ErrorMessage))
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{
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<div class="error-message">
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@ErrorMessage
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</div>
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}
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<NexusButton Variant="primary" OnClick="ConfirmIngestion">Dodaj do biblioteki</NexusButton>
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<NexusButton Variant="secondary" OnClick="Reset">Wybierz inny plik</NexusButton>
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</div>
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</div>
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</div>
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}
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</section>
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</div>
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</div>
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@code {
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[Parameter]
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public bool IsOpen { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether the modal is visible.
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/// </summary>
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[Parameter] public bool IsVisible { get; set; }
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[Parameter]
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public EventCallback<bool> IsOpenChanged { get; set; }
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/// <summary>
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/// Event callback triggered when the modal is closed.
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/// </summary>
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[Parameter] public EventCallback OnClose { get; set; }
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private bool _isDragging;
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/// <summary>
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/// Event callback triggered when a book is successfully ingested.
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/// Passes the extracted metadata to the parent component.
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/// </summary>
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[Parameter] public EventCallback<LocalEpubMetadata> OnBookAdded { get; set; }
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private bool IsDragging { get; set; }
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private bool IsParsing { get; set; }
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private LocalEpubMetadata? Metadata { get; set; }
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private string? ErrorMessage { get; set; }
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// Allow up to 50 MB
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private const long MaxFileSize = 50 * 1024 * 1024;
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private async Task CloseModal()
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{
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IsOpen = false;
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Reset();
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await IsOpenChanged.InvokeAsync(false);
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}
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private void Reset()
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{
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IsParsing = false;
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Metadata = null;
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ErrorMessage = null;
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_isDragging = false;
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await OnClose.InvokeAsync();
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}
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private void OnDragEnter() => _isDragging = true;
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private void OnDragLeave() => _isDragging = false;
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private void HandleDragEnter() => IsDragging = true;
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private void HandleDragLeave() => IsDragging = false;
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private async Task HandleDrop(DragEventArgs e)
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{
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IsDragging = false;
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// JS interop would be needed for actual drag-drop file access in Blazor WASM
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// This is a placeholder for the interaction pattern
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}
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private async Task HandleFileSelected(InputFileChangeEventArgs e)
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{
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_isDragging = false;
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var file = e.File;
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if (file == null) return;
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if (!file.Name.EndsWith(".epub", StringComparison.OrdinalIgnoreCase))
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{
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ErrorMessage = "Only .epub files are supported.";
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return;
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}
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ErrorMessage = null;
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IsParsing = true;
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StateHasChanged();
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try
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{
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using var stream = file.OpenReadStream(MaxFileSize);
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// Requirement: Extract metadata locally before uploading
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// We limit the size for extraction safety
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using var stream = file.OpenReadStream(maxAllowedSize: 10 * 1024 * 1024); // 10MB
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// In Blazor WASM, we might need to copy to memory stream first for synchronous parsing if the parser doesn't stream well over interop
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// Using MemoryStream to ensure the provider doesn't close the stream prematurely
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using var memoryStream = new MemoryStream();
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await stream.CopyToAsync(memoryStream);
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memoryStream.Position = 0;
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var result = await EpubService.ExtractMetadataAsync(memoryStream);
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var result = await EpubMetadataExtractor.ExtractMetadataAsync(memoryStream);
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if (result.IsSuccess)
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{
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Metadata = result.Value;
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}
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else
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{
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ErrorMessage = result.Errors.FirstOrDefault()?.Message ?? "Failed to parse EPUB.";
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}
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error uploading EPUB");
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ErrorMessage = $"An unexpected error occurred: {ex.Message} \n {ex.StackTrace}";
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// Log or handle error
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Console.WriteLine($"Metadata extraction failed: {ex.Message}");
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}
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finally
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{
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@@ -144,4 +141,25 @@
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StateHasChanged();
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}
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}
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private async Task ConfirmIngestion()
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{
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if (Metadata != null)
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{
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await OnBookAdded.InvokeAsync(Metadata);
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await CloseModal();
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}
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}
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private void Reset()
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{
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Metadata = null;
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IsParsing = false;
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}
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public ValueTask DisposeAsync()
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{
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// Cleanup if necessary
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return ValueTask.CompletedTask;
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}
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}
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