as is

StopShopping.FileApi/Services/Implementions/FileService.cs

@@ -0,0 +1,59 @@
+using Microsoft.Extensions.Options;
+
+namespace StopShopping.FileApi.Services.Implementions;
+
+public class FileService : IFileService
+{
+    public FileService(IOptions<AppOptions> appOptions,
+        IWebHostEnvironment webHostEnvironment)
+    {
+        _appOptions = appOptions.Value;
+        _env = webHostEnvironment;
+    }
+
+    private readonly IWebHostEnvironment _env;
+    private readonly AppOptions _appOptions;
+
+    public async Task<ApiResponse<FileUploadResp>> UploadFileAsync(UploadParams payload)
+    {
+        var newName = Guid.NewGuid().ToString("N").ToLower();
+        var extension = Path.GetExtension(payload.File!.FileName);
+        var newFullName = $"{newName}{extension}";
+        var relativeToRootPath = GetRelativeToRootPath(payload.Scences, newFullName);
+        var targetPath = Path.Combine(_env.WebRootPath, GetRelativeToRootPath(payload.Scences));
+
+        if (!Directory.Exists(targetPath))
+        {
+            Directory.CreateDirectory(targetPath);
+        }
+
+        using var file = new FileStream(
+            Path.Combine(_env.WebRootPath, relativeToRootPath),
+            FileMode.CreateNew,
+            FileAccess.Write);
+
+        await payload.File.CopyToAsync(file);
+
+        FileUploadResp result = new()
+        {
+            NewName = newFullName,
+            Url = GetFileUrl(payload.Scences, newFullName),
+        };
+
+        return new ApiResponse<FileUploadResp>(result);
+    }
+
+    private string GetFileUrl(UploadScences scences, string fileName)
+    {
+        return $"{_appOptions.Domain}/{GetRelativeToRootPath(scences, fileName)
+            .Replace(Path.DirectorySeparatorChar, '/')}";
+    }
+
+    private string GetRelativeToRootPath(UploadScences scences, string fileName = "")
+    {
+        return Path.Combine(
+            "images",
+            scences.GetTargetDirectory(),
+            fileName);
+    }
+}