68 lines
2.7 KiB
C#
68 lines
2.7 KiB
C#
using ErrorOr;
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using Microsoft.EntityFrameworkCore;
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using Musify.Application.Configuration;
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using Musify.Application.Contracts;
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using Musify.Domain.Entities;
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using Musify.Domain.ValueObjects;
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namespace Musify.Application.Services;
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public sealed class UploadIntentValidator(
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IDatabase database,
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IStorageService storageService)
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{
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public async Task<ErrorOr<Success>> CheckQuotaAsync(
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UploadIntentConfiguration config,
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long userId,
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long requiredBytes,
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int requiredIntentCount,
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CancellationToken cancellationToken)
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{
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var activeIntents = await database.UploadIntents
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.AsNoTracking()
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.Where(i => i.UserId == userId && i.Status == UploadIntentStatus.Issued)
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.ToListAsync(cancellationToken);
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if (activeIntents.Count + requiredIntentCount > config.MaxActiveUploadIntentsPerUser)
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return Error.Validation(description: "Upload intent limit exceeded. Wait for existing uploads to complete or expire.");
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var activeBytes = activeIntents.Sum(i => i.ExpectedSizeBytes ?? config.DefaultExpectedPictureSizeBytes);
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if (activeBytes + requiredBytes > config.MaxActiveUploadBytesPerUser)
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return Error.Validation(description: "Upload byte quota exceeded. Wait for existing uploads to complete or expire.");
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return new Success();
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}
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public async Task<ErrorOr<UploadIntent>> ValidateAndLoadAsync(
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UploadIntentConfiguration config,
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Guid intentId,
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long userId,
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UploadIntentPurpose purpose,
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CancellationToken cancellationToken)
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{
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var intent = await database.UploadIntents
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.FirstOrDefaultAsync(i => i.Id == intentId, cancellationToken);
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if (intent == null || intent.UserId != userId)
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return Error.NotFound(description: "Upload intent not found or not accessible.");
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if (intent.Purpose != purpose)
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return Error.Validation(description: "Upload intent was issued for a different purpose.");
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if (intent.IsConsumed)
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return Error.Conflict(description: "Upload intent has already been consumed.");
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if (intent.IsExpiredAt(DateTime.UtcNow))
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return Error.Validation(description: "Upload intent has expired.");
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var metadata = await storageService.HeadObjectAsync(intent.Bucket, intent.Key, cancellationToken);
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if (metadata == null)
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return Error.NotFound(description: "Uploaded object not found in storage. Upload the file first.");
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if (metadata.ContentLength > config.MaxUploadBytes)
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return Error.Validation(description: $"Uploaded file exceeds the maximum allowed size of {config.MaxUploadBytes} bytes.");
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return intent;
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}
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}
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