using System;
using System.Diagnostics;

namespace Toak.Core.Skills;

public class DynamicSkill : ISkill
{
    private readonly SkillDefinition _def;

    public string Name => _def.Name;
    public string Description => _def.Description;
    public string[] Hotwords => _def.Hotwords;
    
    public bool HandlesExecution => _def.Action.ToLowerInvariant() == "script";

    public DynamicSkill(SkillDefinition def)
    {
        _def = def;
    }

    public string GetSystemPrompt(string rawTranscript)
    {
        return _def.SystemPrompt.Replace("{transcript}", rawTranscript);
    }

    public void Execute(string llmResult)
    {
        if (HandlesExecution && !string.IsNullOrWhiteSpace(_def.ScriptPath))
        {
            var expandedPath = Environment.ExpandEnvironmentVariables(_def.ScriptPath);
            if (expandedPath.StartsWith("~"))
            {
                expandedPath = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) + expandedPath.Substring(1);
            }

            try
            {
                var process = Process.Start(new ProcessStartInfo
                {
                    FileName = expandedPath,
                    Arguments = $"\"{llmResult.Replace("\"", "\\\"")}\"",
                    UseShellExecute = false,
                    CreateNoWindow = true
                });
                process?.WaitForExit();
            }
            catch (Exception ex)
            {
                Console.WriteLine($"[DynamicSkill] Error executing script '{expandedPath}': {ex.Message}");
            }
        }
    }
}