using CliWrap;
using CliWrap.Buffered;
using InnovEnergy.Lib.Utils;

namespace InnovEnergy.App.Backend.S3;

public class S3Cmd
{
    private static readonly Command Python = Cli.Wrap("python3");
    
    private const String S3CmdPath    = "Resources/s3cmd.py";
    private const String S3Prefix = "s3://";
    
    private String[] DefaultArgs { get; }

    // ReSharper disable StringLiteralTypo
    // ReSharper enable StringLiteralTypo

    public S3Cmd(String key, String secret)
    {
        DefaultArgs = new[]
        {
            S3CmdPath,
            "--access_key", key,
            "--secret_key", secret,
        };
    }
    
    public async Task<String> SignUrl(String bucketName, TimeSpan validity)
    {
        var result = await Run(bucketName, "signurl", $"+{validity.TotalSeconds}");
        
        return result
              .StandardOutput
              .Replace("\n", "")
              .Replace(" ", "");
    }
    
    public async Task<Boolean> CreateBucket(String bucketName)
    {
        var result = await Run(bucketName, "mb");
        return result.ExitCode == 0;
    }
    
    public async Task<Boolean> DeleteBucket(String bucketName)
    {
        var result = await Run(bucketName, "rb");
        return result.ExitCode == 0;
    }

    private Task<BufferedCommandResult> Run(String bucketName, String operation, params String[] optionalArgs)
    {
        var args = DefaultArgs
                  .Append(operation)
                  .Append(bucketName.EnsureStartsWith(S3Prefix))
                  .Concat(optionalArgs);

        return Python
              .WithArguments(args)
              .ExecuteBufferedAsync();
    }
}