using InnovEnergy.SysTools.Utils;

namespace InnovEnergy.SysTools.Process;

public readonly struct ProcessResult
{
    public ProcessResult(Int32 exitCode,
        IReadOnlyList<String> stdOut,
        IReadOnlyList<String> stdErr,
        String output)
    {
        ExitCode = exitCode;
        StdOut   = stdOut;
        StdErr   = stdErr;
        Output   = output;
    }

    public Int32  ExitCode { get; }
    public String Output   { get; }

    public IReadOnlyList<String> StdOut { get; }
    public IReadOnlyList<String> StdErr { get; }

    public ProcessResult ThrowOnError()
    {
        if (ExitCode != 0)
        {
            if (StdErr.Count ==0)
                throw new Exception(nameof(AsyncProcess) + " exited with exit code " + ExitCode);

            throw new Exception(StdErr.Aggregate((a, b) => a.NewLine() + b));
        }

        return this;
    }

    public ProcessResult OnError(Action<ProcessResult> action)
    {
        if (Failed) action(this);
        return this;
    }

    public ProcessResult OnSuccess(Action<ProcessResult> action)
    {
        if (Succeeded) action(this);
        return this;
    }

    public ProcessResult Dump()
    {
        Output.Write();
        return this;
    }

    public Boolean Succeeded => ExitCode == 0;
    public Boolean Failed    => ExitCode != 0;

    public override String ToString()
    {
        return Output.NewLine() + "ExitCode: " + ExitCode;
    }
}