using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Newtonsoft.Json;
using WinAlfred.Plugin;

namespace WinAlfred.PluginLoader
{
    public class PythonPluginWrapper : IPlugin
    {
        private PluginMetadata metadata;

        [DllImport("PyWinAlfred.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
        private extern static IntPtr ExecPython(string directory, string file, string method, string para);
        [DllImport("PyWinAlfred.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
        private extern static void InitPythonEnv();

        public PythonPluginWrapper(PluginMetadata metadata)
        {
            this.metadata = metadata;
        }

        public List<Result> Query(Query query)
        {
            try
            {
                string s = Marshal.PtrToStringAnsi(ExecPython(metadata.PluginDirecotry, metadata.ExecuteFileName.Replace(".py", ""), "query", query.RawQuery));
                if (string.IsNullOrEmpty(s))
                {
                    return new List<Result>();
                }

                if (s.StartsWith("PYTHONERROR"))
                {
                    throw new ArgumentException(s);
                }
                List<PythonResult> o = JsonConvert.DeserializeObject<List<PythonResult>>(s);
                List<Result> r = new List<Result>();
                foreach (PythonResult pythonResult in o)
                {
                    PythonResult ps = pythonResult;
                    if (!string.IsNullOrEmpty(ps.ActionName))
                    {
                        ps.Action = () => ExecPython(metadata.PluginDirecotry, metadata.ExecuteFileName.Replace(".py", ""), ps.ActionName, ps.ActionPara);
                    }
                    r.Add(ps);
                }
                return r;
            }
            catch (Exception)
            {

                throw;
            }

        }

        public void Init()
        {
            InitPythonEnv();
        }
    }
}