using HarmonyLib;
using IllusionPlugin;
using System;
using System.Diagnostics;
using System.Reflection;
using YUR.Fit.Core.Models;
using YUR.ViewControllers;

namespace BsYurHttpStatus
{
    public sealed class Plugin : IPlugin
    {
        [Conditional("DEBUG")]
        internal static void Log(string text) => Debug.Print($"BsYurHttpStatus {text}");

        private Harmony _harmony;
        private bool _isPatched;

        private static HttpStatusServer _statusServer;
        private bool _isServerStarted;

        public string Name => "YUR Http Status";
        public string Version => "0.0.0.1";

        public void OnApplicationStart()
        {
            Log("OnApplicationStart");

            Log("Patching");
            try
            {
                var original = AccessTools.Method(typeof(ActivityViewController), "OverlayUpdateAction");
                var method = GetType().GetMethod(nameof(PatchMethod), BindingFlags.Static | BindingFlags.NonPublic);
                _harmony = new Harmony(Name);
                _harmony.Patch(original, postfix:new HarmonyMethod(method));
                _isPatched = true;
                Log("Patch success");
            }
            catch (Exception e)
            {
                Log("ERROR " + e);
            }

            if (_isPatched)
            {
                Log("Starting HTTP Server");
                try
                {
                    _statusServer = new HttpStatusServer();
                    _statusServer.Start();
                    _isServerStarted = true;
                    Log("HTTP Server started");
                }
                catch (Exception e)
                {
                    Log("ERROR " + e);
                }
            }
        }

        public void OnApplicationQuit()
        {
            Log("OnApplicationQuit");

            if (_isPatched)
            {
                try
                {
                    Log("Unpatching");
                    _harmony?.UnpatchAll(Name);
                    _isPatched = false;
                    Log("Unpatch success");
                }
                catch (Exception e)
                {
                    Log("ERROR " + e);
                }
            }

            if (_isServerStarted)
            {
                Log("Stopping HTTP Server");
                try
                {
                    _statusServer.Stop();
                    _isServerStarted = false;
                    Log("HTTP Server Stopped");
                }
                catch (Exception e)
                {
                    Log("ERROR " + e);
                }
            }
        }

        private static void PatchMethod(ref OverlayStatusUpdate status)
        {
            _statusServer?.Update(status);

            Log("YUR.(Est)HeartRate:" + (status.HeartRate ?? status.CalculationMetrics.EstHeartRate));
        }

        public void OnLevelWasLoaded(int level)
        {
        }

        public void OnLevelWasInitialized(int level)
        {
        }

        public void OnUpdate()
        {
        }

        public void OnFixedUpdate()
        {
        }
    }
}