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using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;
using ArcaneLibs.Extensions;
using LibMatrix.Extensions;
using LibMatrix.Interfaces.Services;
using Microsoft.Extensions.Logging;
namespace MatrixUtils.Abstractions;
public class FileStorageProvider : IStorageProvider {
private readonly ILogger<FileStorageProvider> _logger;
public string TargetPath { get; }
/// <summary>
/// Creates a new instance of <see cref="FileStorageProvider" />.
/// </summary>
/// <param name="targetPath"></param>
public FileStorageProvider(string targetPath) {
// new Logger<FileStorageProvider>(new LoggerFactory()).LogInformation("test");
Console.WriteLine($"Initialised FileStorageProvider with path {targetPath}");
TargetPath = targetPath;
if (!Directory.Exists(targetPath)) {
Directory.CreateDirectory(targetPath);
}
}
public async Task SaveObjectAsync<T>(string key, T value) => await File.WriteAllTextAsync(Path.Join(TargetPath, key), value?.ToJson());
[RequiresUnreferencedCode("This API uses reflection to deserialize JSON")]
public async Task<T?> LoadObjectAsync<T>(string key) => JsonSerializer.Deserialize<T>(await File.ReadAllTextAsync(Path.Join(TargetPath, key)));
public Task<bool> ObjectExistsAsync(string key) => Task.FromResult(File.Exists(Path.Join(TargetPath, key)));
public Task<List<string>> GetAllKeysAsync() => Task.FromResult(Directory.GetFiles(TargetPath).Select(Path.GetFileName).ToList());
public Task DeleteObjectAsync(string key) {
File.Delete(Path.Join(TargetPath, key));
return Task.CompletedTask;
}
public async Task SaveStreamAsync(string key, Stream stream) {
Directory.CreateDirectory(Path.GetDirectoryName(Path.Join(TargetPath, key)) ?? throw new InvalidOperationException());
await using var fileStream = File.Create(Path.Join(TargetPath, key));
await stream.CopyToAsync(fileStream);
}
public Task<Stream?> LoadStreamAsync(string key) => Task.FromResult<Stream?>(File.Exists(Path.Join(TargetPath, key)) ? File.OpenRead(Path.Join(TargetPath, key)) : null);
}
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