using System;
using System.Linq;
using System.Collections.Generic;
using BepInEx;
using BepInEx.Configuration;
using HarmonyLib;
using HarmonyLib.Tools;

namespace BanquetForCyka {
    [BepInPlugin(PluginGuid, PluginName, PluginVersion)]
    public class Main : BaseUnityPlugin {
        private const string PluginGuid = "BanquetForCyka";
        private const string PluginName = "BanquetForCyka";
        private const string PluginVersion = "1.0.0";

        public static ConfigEntry<bool> debug;
        public static ConfigEntry<bool> debugXp;
        public static ConfigEntry<bool> debugDodgeWindow;
        public static ConfigEntry<bool> debugStatEntry;
        public static ConfigEntry<bool> debugSkillEntry;
        public static ConfigEntry<bool> debugLevelUpEntry;

        public static ExpressionConfigEntry xpMultiplier;
        public static ExpressionConfigEntry dodgeWindow;
        public static ExpressionConfigEntry levelUpStatEntry;
        public static ExpressionConfigEntry levelUpSkillEntry;

        public void Awake() {
            debug = Config.Bind("Debug", "Global Debug", false);
            debugXp = Config.Bind("Debug", "XP Debug", false);
            debugDodgeWindow = Config.Bind("Debug", "Dodge Window Debug", false);
            debugStatEntry = Config.Bind("Debug", "Stat Entry Debug", false);
            debugSkillEntry = Config.Bind("Debug", "Skill Entry Debug", false);
            debugLevelUpEntry = Config.Bind("Debug", "Level Up Entry Debug", false);

            xpMultiplier = new ExpressionConfigEntry(
                Config, "General", "XP Multiplier", "v*1",
                "XP Multiplier expression. Use 'v' to represent the original value.", debugXp);
            dodgeWindow = new ExpressionConfigEntry(Config, "General", "Dodge Window", "v*1",
                                                    "Dodge Window expression. Use 'v' to represent the original value.",
                                                    debugDodgeWindow);
            levelUpStatEntry = new ExpressionConfigEntry(
                Config, "General", "Level Up Stat Entry", "v*1",
                "Stat Entry expression. Use 'v' to represent the original value.", debugStatEntry);
            levelUpSkillEntry = new ExpressionConfigEntry(
                Config, "General", "Level Up Skill Entry", "v*1",
                "Skill Entry expression. Use 'v' to represent the original value.", debugSkillEntry);

            Logger.LogInfo("BanquetForCyka loaded");
            HarmonyFileLog.Enabled = true;
            Harmony harmony = new Harmony(PluginGuid);
            harmony.PatchAll();
            var originalMethods = harmony.GetPatchedMethods();
            Logger.LogInfo("Patched " + originalMethods.Count() + " methods");
        }

        public static void LogDebug(string message, ConfigEntry<bool> debugFlag = null) {
            if (debug.Value || (debugFlag != null && debugFlag.Value))
                Console.WriteLine(message);
        }
    }

    [HarmonyPatch(typeof(Stats), "AddXP")]
    public class Stats_AddXP {
        public static void Prefix(ref int amt) {
            Main.LogDebug("Original XP amount: " + amt, Main.debugXp);
            float result = Main.xpMultiplier.Evaluate(amt);
            amt = (int)result;
            Main.LogDebug("Modified XP amount: " + amt, Main.debugXp);
        }
    }

    [HarmonyPatch(typeof(Actions), "DodgeCalculation")]
    public class Actions_DodgeCalculation {
        public static void Postfix(ref float __result) {
            Main.LogDebug("Original dodge window: " + __result, Main.debugDodgeWindow);
            float result = Main.dodgeWindow.Evaluate(__result);
            __result = result;
            Main.LogDebug("Modified dodge window: " + __result, Main.debugDodgeWindow);
        }
    }

    [HarmonyPatch(typeof(LevelUp), "ClickedStat")]
    public class Actions_ClickedStat {
        private static float originalStr;
        private static float originalAgi;
        private static float originalDex;
        private static float originalPag;
        private static float originalSen;

        public static void Prefix(ref LevelUp __instance) {
            Main.LogDebug("Original Str: " + __instance.character.stats.strength, Main.debugStatEntry);
            Main.LogDebug("Original Agi: " + __instance.character.stats.agility, Main.debugStatEntry);
            Main.LogDebug("Original Dex: " + __instance.character.stats.dexterity, Main.debugStatEntry);
            Main.LogDebug("Original Pag: " + __instance.character.stats.pagan, Main.debugStatEntry);
            Main.LogDebug("Original Sen: " + __instance.character.stats.sensory, Main.debugStatEntry);

            originalStr = __instance.character.stats.strength;
            originalAgi = __instance.character.stats.agility;
            originalDex = __instance.character.stats.dexterity;
            originalPag = __instance.character.stats.pagan;
            originalSen = __instance.character.stats.sensory;
        }

        public static void Postfix(ref LevelUp __instance) {
            float deltaStr = __instance.character.stats.strength - originalStr;
            float deltaAgi = __instance.character.stats.agility - originalAgi;
            float deltaDex = __instance.character.stats.dexterity - originalDex;
            float deltaPag = __instance.character.stats.pagan - originalPag;
            float deltaSen = __instance.character.stats.sensory - originalSen;

            Main.LogDebug("Delta Str: " + deltaStr, Main.debugStatEntry);
            Main.LogDebug("Delta Agi: " + deltaAgi, Main.debugStatEntry);
            Main.LogDebug("Delta Dex: " + deltaDex, Main.debugStatEntry);
            Main.LogDebug("Delta Pag: " + deltaPag, Main.debugStatEntry);
            Main.LogDebug("Delta Sen: " + deltaSen, Main.debugStatEntry);

            float resultStr = Main.levelUpStatEntry.Evaluate(deltaStr);
            float resultAgi = Main.levelUpStatEntry.Evaluate(deltaAgi);
            float resultDex = Main.levelUpStatEntry.Evaluate(deltaDex);
            float resultPag = Main.levelUpStatEntry.Evaluate(deltaPag);
            float resultSen = Main.levelUpStatEntry.Evaluate(deltaSen);

            Main.LogDebug("Result Str: " + resultStr, Main.debugStatEntry);
            Main.LogDebug("Result Agi: " + resultAgi, Main.debugStatEntry);
            Main.LogDebug("Result Dex: " + resultDex, Main.debugStatEntry);
            Main.LogDebug("Result Pag: " + resultPag, Main.debugStatEntry);
            Main.LogDebug("Result Sen: " + resultSen, Main.debugStatEntry);

            __instance.character.stats.strength = resultStr;
            __instance.character.stats.agility = resultAgi;
            __instance.character.stats.dexterity = resultDex;
            __instance.character.stats.pagan = resultPag;
            __instance.character.stats.sensory = resultSen;
        }
    }

    [HarmonyPatch(typeof(LevelUp), "IncreaseAmount")]
    public class Actions_IncreaseAmount {
        public static void Postfix(ref int __result) {
            Main.LogDebug("Original amount: " + __result, Main.debugLevelUpEntry);
            float result = Main.levelUpSkillEntry.Evaluate(__result);
            __result = (int)result;
            Main.LogDebug("Modified amount: " + __result, Main.debugLevelUpEntry);
        }
    }
}