components/LiteCharms.Features/S3/S3Service.cs

namespace LiteCharms.Features.S3;

public class S3Service(IAmazonS3 amazonS3)
{
    public async Task<Result<string>> UploadFileAsync(string bucketName, string fileName, Stream fileStream, string contentType, string cdnBaseUrl, CancellationToken cancellationToken = default)
    {
        try
        {
            var putRequest = new PutObjectRequest
            {
                BucketName = bucketName,
                Key = fileName,
                InputStream = fileStream,
                ContentType = contentType
            };

            var response = await amazonS3.PutObjectAsync(putRequest, cancellationToken);

            return response.HttpStatusCode != System.Net.HttpStatusCode.OK
                ? Result.Fail<string>($"Failed to upload {fileName} to S3.")
                : Result.Ok(string.Format(cdnBaseUrl, bucketName, fileName));
        }
        catch (Exception ex)
        {
            return Result.Fail<string>(new Error($"Error uploading {fileName} to S3: {ex.Message}").CausedBy(ex));
        }
    }
}