using Amazon.Runtime;
using Amazon.S3;
using InnovEnergy.Lib.Utils;

namespace InnovEnergy.Lib.S3Utils.Data;

public record S3RegionCredentials : S3Credentials
{
    public required String Region { get; init; }

    private AmazonS3Client? _Client;
    internal AmazonS3Client Client => _Client ??= new AmazonS3Client
    (
        credentials: new BasicAWSCredentials(Key, Secret),
        clientConfig: new()
        {
            ServiceURL = Region.EnsureStartsWith("https://"),
            ForcePathStyle = true,
        }
    );

    public new static S3RegionCredentials? FromS3Cfg() => FromFile(S3CfgFile);

    public new static S3RegionCredentials? FromFile(String file)
    {
        // [default]
        // host_base = sos-ch-dk-2.exo.io
        // host_bucket = %(bucket)s.sos-ch-dk-2.exo.io
        // access_key = xxxxxxxxxxxxxxx
        // secret_key = xxxxxxxxxxxxxxx
        // use_https = True
        
        try
        {
            var cfg = ParseFile(file);

            return new S3RegionCredentials
            {
                Key    = cfg["access_key"],
                Secret = cfg["secret_key"],
                Region = cfg["host_base"],
            };
        }
        catch
        {
            return null;
        }
    }
}