48 lines
2.0 KiB
C#
48 lines
2.0 KiB
C#
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using Avalonia_EFCore.Database;
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using Microsoft.EntityFrameworkCore;
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namespace Avalonia_API.Extensions
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{
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public static class FileStreamEndpointExtensions
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{
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public static IEndpointRouteBuilder MapFileStreamEndpoints(this IEndpointRouteBuilder app)
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{
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app.MapMethods("/api/files/{id:int}/stream", ["GET", "HEAD"], async (int id, AppDataContext db, HttpContext httpContext) =>
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{
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// Browsers cancel in-flight range requests aggressively while seeking.
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// Keep this small metadata lookup independent from RequestAborted so
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// EF does not throw TaskCanceledException before the file is opened.
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var file = await db.ManagedFileRecords
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.AsNoTracking()
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.Include(item => item.LibraryRoot)
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.FirstOrDefaultAsync(item =>
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item.Id == id
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&& item.Exists
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&& item.LibraryRoot != null
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&& item.LibraryRoot.IsAvailable);
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if (file is null || !System.IO.File.Exists(file.AbsolutePath))
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{
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return Results.NotFound();
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}
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var stream = System.IO.File.Open(file.AbsolutePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
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httpContext.Response.Headers.ContentDisposition = $"inline; filename=\"{Uri.EscapeDataString(file.FileName)}\"";
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httpContext.Response.Headers.AcceptRanges = "bytes";
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httpContext.Response.Headers.CacheControl = "public, max-age=3600";
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return Results.File(
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stream,
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contentType: file.ContentType,
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fileDownloadName: null,
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lastModified: file.LastWriteTimeUtc,
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enableRangeProcessing: true);
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})
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.WithName("StreamManagedFile")
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.WithTags("FileLibrary");
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return app;
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}
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}
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}
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