using BepInEx;
using BepInEx.Configuration;
using HarmonyLib;
using MxValheim.KillFeed;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading;
using System.Xml;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

[BepInPlugin(ModGUID, ModName, ModVersion)]
public class MxValheimMod : BaseUnityPlugin
{
    public static MxValheimMod Instance; // Singleton reference
    public static KillFeed_Patch kfp = new KillFeed_Patch();

    private const string ModGUID = "ovh.mxdev.mxvalheim";
    private const string ModName = "MxValheim";
    private const string ModVersion = "1.5.5";

    public static ConfigEntry<bool> Config_Locked;
    public static ConfigEntry<int> Config_OreMultiplier;
    public static ConfigEntry<float> Config_rangeMultiplier;
    public static ConfigEntry<float> Config_bowDrawSpeedBonusPerLevel;
    public static ConfigEntry<bool> Config_rainDamage;
    public static ConfigEntry<float> Config_boatSpeed;
    public static ConfigEntry<bool> Config_autoDoorCloseEnabled;
    public static ConfigEntry<float> Config_autoDoorClose;

    public static string modPath = Path.Combine(Paths.PluginPath, "MxValheim");
    public static string internalConfigsPath = Path.Combine(modPath, "Configs");
    private static string WeightConfigPath => Path.Combine(internalConfigsPath, "items_weight.json");
    public static Dictionary<string, float> WeightSettings = new Dictionary<string, float>();

    // Data structures
    public class KillData
    {
        public string attackerName;
        public string weaponPrefabName;
        public int victimLevel;
        public bool isBoss;
    }

    public static GameObject _hudRoot;
    public static Text _killText;
    public static Image _weaponIconSlot;
    public static Image _victimIconSlot;
    public static Image _panelImage;
    public static Outline _border;
    public static Color borderColor = Color.white;
    public static CanvasGroup _canvasGroup;
    public static float _fadeDuration = 0.5f;
    public static float _displayTimer;

    public static readonly Queue<string> _msgQueue = new Queue<string>();
    public static readonly Queue<Color> _borderColQueue = new Queue<Color>();
    public static readonly Queue<Sprite> _iconQueue = new Queue<Sprite>();
    public static readonly Queue<Sprite> _victimIconQueue = new Queue<Sprite>();
    public static readonly Dictionary<Character, KillData> _activeTrackers = new Dictionary<Character, KillData>();

    void Awake()
    {
        Instance = this;

        Config_OreMultiplier = Config.Bind("General","OreMultiplier",3,"How many items should drop for every 1 ore/scrap found.");
        Config_rangeMultiplier = Config.Bind("General", "CraftingRangeMultiplier",2.0f,"Multiplier for the workbench build/crafting range. Default is 2x.");
        Config_bowDrawSpeedBonusPerLevel = Config.Bind("General", "BowDrawSpeedBonusPercentPerLevel", 1.0f, "Shorten the bow draw speed by this percent for every bow upgrade level.");
        Config_rainDamage = Config.Bind("General", "RainDamage", true, "Set to true to stop rain damage, false to return to vanilla behavior.");
        Config_boatSpeed = Config.Bind("General", "BoatSpeedMultiplier", 2.0f, "Your boat/raft will move without wind at a speed multiplied by this value.");
        Config_autoDoorCloseEnabled = Config.Bind("General", "AutoDoorCloseEnabled", true, "Your doors will auto close if enabled. See AutoDoorCloseTimer for the desired time.");
        Config_autoDoorClose = Config.Bind("General", "AutoDoorCloseTimer", 5.0f, "Your doors will auto close after the specified timer duration.");

        LoadLocalization();
        LoadJsonConfig();

        Harmony harmony = new Harmony(ModGUID);
        harmony.PatchAll();
    }

    [HarmonyPatch(typeof(Localization), nameof(Localization.SetupLanguage))]
    public static class Localization_SetupLanguage_Patch
    {
        public static void Postfix()
        {
            LoadLocalization();
        }
    }

    // --- TEST COMMAND: Type 'testkill' in F5 console ---
    [HarmonyPatch(typeof(Terminal), nameof(Terminal.InputText))]
    public static class ConsoleInputPatch
    {
        static void Postfix(Terminal __instance)
        {
            string text = __instance.m_input.text;
            if (text.ToLower() == "listicons")
            {
                var spriteAsset = Resources.FindObjectsOfTypeAll<TMP_SpriteAsset>().FirstOrDefault(x => x.name == "icons"); ;

                if (spriteAsset != null)
                {
                    Debug.Log($"--- Listing all sprites in {spriteAsset.name} ---");
                    for (int i = 0; i < spriteAsset.spriteCharacterTable.Count; i++)
                    {
                        var sprite = spriteAsset.spriteCharacterTable[i];
                        Debug.Log($"Index: {i} | Name: {sprite.name}");
                    }
                }
            }
        }
    }

    [HarmonyPatch(typeof(Game), nameof(Game.Start))]
    public static class GameStartPatch
    {
        static void Postfix()
        {
            if (ZRoutedRpc.instance != null && kfp != null)
            {              
                // We use the explicit 'Method' delegate to avoid the ArgumentException
                ZRoutedRpc.instance.Register<string, string, string, string, int>("RPC_MxKillMsg",
                    new RoutedMethod<string, string, string, string, int>.Method(kfp.OnReceiveKillMsg));

                Debug.Log("MxValheimMod: RPC Registered successfully with explicit delegate.");
            }
        }
    }

    void Update()
    {
        // Use the game's native check for dedicated servers
        ZNet zn = new ZNet();
        if (zn.IsDedicated() || Player.m_localPlayer == null) return;

        if (_msgQueue == null || _msgQueue.Count == 0 && _displayTimer <= 0) return;

        // Logic to trigger next message
        if (_msgQueue.Count > 0 && _displayTimer <= 0)
        {
            borderColor = new Color(0.141f, 0.141f, 0.153f);
            kfp.ShowNextMessage(_msgQueue.Dequeue(), _iconQueue.Dequeue(), _victimIconQueue.Dequeue(), _borderColQueue.Dequeue());
        }

        if (_displayTimer > 0)
        {
            _displayTimer -= Time.deltaTime;

            if (_canvasGroup != null && _hudRoot != null)
            {
                RectTransform pRect = _panelImage.GetComponent<RectTransform>();

                // FADE AND SLIDE LOGIC
                if (_displayTimer > 4.5f)
                { // Fading in (first 0.5s)
                    _canvasGroup.alpha = (5f - _displayTimer) * 2;
                }
                else if (_displayTimer < 1f)
                { // Fading out (last 1s)
                    _canvasGroup.alpha = _displayTimer;
                }
                else
                {
                    _canvasGroup.alpha = 1f;
                    pRect.anchoredPosition = new Vector2(0, -40);
                }
            }

            if (_displayTimer <= 0 && _hudRoot != null) _hudRoot.SetActive(false);
        }

    }   

    public static void LoadLocalization()
    {
        if (Localization.instance == null) return;

        string modPath = Path.Combine(Paths.PluginPath, "MxValheim");
        string translationsPath = Path.Combine(modPath, "Translations");
        string lang = Localization.instance.GetSelectedLanguage();
        string filePath = Path.Combine(translationsPath, $"{lang}.json");

        if (!File.Exists(filePath))
        {
            filePath = Path.Combine(translationsPath, "English.json");
        }

        if (File.Exists(filePath))
        {
            try
            {
                string json = File.ReadAllText(filePath);
                var dict = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);

                // Get the method via Reflection to bypass "Inaccessible" errors
                MethodInfo addWordMethod = typeof(Localization).GetMethod("AddWord",
                    BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

                if (addWordMethod != null)
                {
                    foreach (var entry in dict)
                    {
                        // Parameters: (instance to run on, array of arguments)
                        addWordMethod.Invoke(Localization.instance, new object[] { entry.Key, entry.Value });
                    }
                    Debug.Log($"[MxValheim] Successfully injected {dict.Count} strings for {lang}.");
                }
                else
                {
                    Debug.LogError("[MxValheim] Critical Error: Could not find AddWord method in game code.");
                }
            }
            catch (Exception e)
            {
                Debug.LogError($"[MxValheim] Error loading JSON: {e.Message}");
            }
        }
    }

    private bool LoadJsonConfig()
    {
        try
        {
            if (!File.Exists(WeightConfigPath))
            {
                WeightSettings = new Dictionary<string, float> { { "Wood", 1.0f }, { "Stone", 1.0f } };
                File.WriteAllText(WeightConfigPath, JsonConvert.SerializeObject(WeightSettings, Newtonsoft.Json.Formatting.Indented));
                return true;
            }

            string json = File.ReadAllText(WeightConfigPath);
            WeightSettings = JsonConvert.DeserializeObject<Dictionary<string, float>>(json);
            Logger.LogInfo($"Successfully parsed {WeightSettings.Count} items.");
            return true;
        }
        catch (Exception ex)
        {
            Logger.LogWarning($"Could not read JSON (might be busy): {ex.Message}");
            return false;
        }
    }

    internal static void ShowKillMessage(string v)
    {
        throw new NotImplementedException();
    }
}