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FileHelper.cs
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FileHelper.cs
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using System;
using System.IO;
using System.Net.Http;
using System.Threading.Tasks;
namespace ExtractOcrApi
{
public class FileHelper
{
public async Task<FileResult> GetAndSaveFile(string url, string type, string rootPath)
{
using (var handler = new HttpClientHandler())
{
handler.ClientCertificateOptions = ClientCertificateOption.Manual;
handler.ServerCertificateCustomValidationCallback = (httpRequestMessage, cert, cetChain, policyErrors) => true;
using (var client = new HttpClient(handler))
{
using (var result = await client.GetAsync(url))
{
if (!result.IsSuccessStatusCode) return new FileResult { Success = false, Error = "Error to download file" };
var fileName = $"{Guid.NewGuid().ToString()}.{type}";
var filepath = Path.Combine(rootPath, $"{fileName}");
if (!await SaveFile(result, filepath))
return new FileResult { Success = false, Error = "Error to save file" };
return new FileResult { Success = true, FilePath = filepath };
}
}
}
}
private static async Task<bool> SaveFile(HttpResponseMessage result, string filepath)
{
try {
var byteArray = await result.Content.ReadAsByteArrayAsync();
await System.IO.File.WriteAllBytesAsync(filepath, byteArray);
return true;
} catch { return false; }
}
public async Task DeleteFile(string path)
{
await Task.Run(() => System.IO.File.Delete(path));
}
}
public class FileResult
{
public string FilePath { get; set; }
public bool Success { get; set; }
public string Error { get; set; }
}
}