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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using IOL.Helpers;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using VSH.Data;
using VSH.Data.Static;
namespace VSH.Services;
public class AssetsService
{
private readonly MainDbContext _context;
private readonly ILogger<AssetsService> _logger;
public AssetsService(MainDbContext context, ILogger<AssetsService> logger) {
_context = context;
_logger = logger;
}
public Task RemoveUnusedProductImages() {
try {
_logger.LogDebug("Starting RemoveUnusedProductImages");
var inUseFileNames = new List<string>();
foreach (var productImageList in _context.Products.Select(c => c.Images).AsNoTracking()) {
var defaultFiles = productImageList.Select(image => image.FileName).ToList();
var smallFiles = defaultFiles.Select(c => c.ExtractFileName() + "-300" + c.ExtractExtension());
var miniFiles = defaultFiles.Select(c => c.ExtractFileName() + "-150" + c.ExtractExtension());
inUseFileNames.AddRange(defaultFiles);
inUseFileNames.AddRange(miniFiles);
inUseFileNames.AddRange(smallFiles);
}
var removedFileCount = 0;
if (inUseFileNames.Any()) {
foreach (var diskFile in Directory.EnumerateFiles(AppPaths.ProductImages.HostPath)) {
if (inUseFileNames.Any(c => c == diskFile))
continue;
if (File.Exists(diskFile))
File.Delete(diskFile);
removedFileCount++;
_logger.LogDebug("Deleted " + diskFile);
}
}
_logger.LogInformation("Removed " + removedFileCount + " unused product images");
return Task.CompletedTask;
} catch (Exception ex) {
_logger.LogError("Exception removing unused assets: {exception}", ex.Message);
return Task.CompletedTask;
}
}
}
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