using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection.Emit;
using BepInEx;
using BepInEx.Configuration;
using HarmonyLib;
using HarmonyLib.Tools;
using Pathfinding;

namespace CykaMod {
    [BepInPlugin(pluginGuid, pluginName, pluginVersion)]
    public class Main : BaseUnityPlugin {
        private const string pluginGuid = "CykaMod";
        private const string pluginName = "CykaMod";
        private const string pluginVersion = "1.0.0";

        public static ConfigEntry<float> skillCap;
        public static ConfigEntry<float> workSpeed;
        public static ConfigEntry<float> workResult;
        public static ConfigEntry<bool> alwaysCritical;
        public static ConfigEntry<float> gameSpeed;
        public static ConfigEntry<int> fans;
        public static ConfigEntry<long> money;

        //
        // private void Awake()
        // {
        //     configGreeting = Config.Bind("General",      // The section under which the option is shown
        //         "GreetingText",  // The key of the configuration option in the configuration file
        //         "Hello, world!", // The default value
        //         "A greeting text to show when the game is launched"); // Description of the option to show in the config file
        //

        public void Awake() {
            skillCap = Config.Bind("General", "Skill Cap", 100f);
            workSpeed = Config.Bind("General", "Work Speed Multiplier", 4f);
            workResult = Config.Bind("General", "Work Result Multiplier", 4f);
            alwaysCritical = Config.Bind("General", "Work Always Critical", false);
            gameSpeed = Config.Bind("General", "Game Speed Multiplier", 3f);
            fans = Config.Bind("General", "Fans Multiplier", 2);
            money = Config.Bind("General", "Money Multiplier", 2L);

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

        public static bool IsMatch(List<CodeInstruction> codes, int index, List<CodeInstruction> matcher) {
            for (var i = 0; i < matcher.Count; i++) {
                if (codes[index + i].opcode != matcher[i].opcode) {
                    return false;
                }
            }
            return true;
        }

        public static void InsertAt(List<CodeInstruction> codes, int index, List<CodeInstruction> toInsert) {
            for (var i = 0; i < toInsert.Count; i++) {
                codes.Insert(index + i, toInsert[i]);
            }
        }
    }

    [HarmonyPatch(typeof(characterScript), "GetSkillCap")]
    public class SkillCapPatch {
        static void Postfix(ref float __result) {
            // Console.WriteLine("GetSkillCap Postfix! Result is " + __result);
            __result = Main.skillCap.Value;
        }
    }

    [HarmonyPatch(typeof(characterScript), "GetSkillCap_Skill")]
    public class SkillCapSkillPatch {
        static void Postfix(ref float __result) {
            // Console.WriteLine("GetSkillCap_Skill Postfix! Result is " + __result);
            __result = Main.skillCap.Value;
        }
    }

    [HarmonyPatch(typeof(characterScript), "GetWorkSpeed")]
    public class GetWorkSpeedPatch {
        static void Postfix(ref float __result) {
            // Console.WriteLine("GetWorkSpeed Postfix! Result is " + __result);
            __result *= Main.workSpeed.Value;
        }
    }

    [HarmonyPatch(typeof(characterScript), "GetWorkResult")]
    public class GetWorkResultPatch {
        static void Prefix(ref float f) {
            // Console.WriteLine("GetWorkResult Postfix! f is " + f);
            f *= Main.workResult.Value;
        }
    }

    [HarmonyPatch(typeof(characterScript), "GetCritic")]
    public class GetCriticPatch {
        static void Postfix(ref bool __result) {
            // Console.WriteLine("GetWorkResult Postfix! f is " + f);
            if (Main.alwaysCritical.Value) {
                __result = true;
            }
        }
    }

    [HarmonyPatch(typeof(mainScript), "SetGameSpeed")]
    public class GameSpeedPatch {
        static void Prefix(ref float f) {
            // Console.WriteLine("SetGameSpeed Prefix! Argument is " + f);
            if (f > 1) {
                f *= Main.gameSpeed.Value;
                // Console.WriteLine("Argument modified to " + f);
            }
        }
    }

    [HarmonyPatch(typeof(characterScript), "Learn")]
    public static class LearnManyPatch {
        static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) {
            var codes = new List<CodeInstruction>(instructions);

            for (var i = 0; i < 5; i++) {
                if (codes[i].opcode == OpCodes.Ldc_R4) {
                    Console.WriteLine("Changing " + codes[i]);
                    codes[i].operand = (float)codes[i].operand * 64;
                    Console.WriteLine("Changed " + codes[i]);
                }
            }

            return codes.AsEnumerable();
        }
    }

    [HarmonyPatch(typeof(arbeitsmarkt), "ArbeitsmarktUpdaten")]
    public static class ManyEmployeesPatch {
        static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) {
            var codes = new List<CodeInstruction>(instructions);

            for (var i = codes.Count - 1; i > 0; i--) {
                if (codes[i].opcode == OpCodes.Ldc_I4_3) {
                    Console.WriteLine("Changing " + codes[i]);
                    codes[i] = new CodeInstruction(OpCodes.Ldc_I4, 64);
                    Console.WriteLine("Changed " + codes[i]);
                    break;
                }
            }

            return codes.AsEnumerable();
        }
    }

    // [HarmonyPatch(typeof(AILerp), "MovementUpdate")]
    public class MovementSpeedPatch {
        static void Prefix(ref float deltaTime) {
            Console.WriteLine("MovementUpdate Prefix! deltaTime is " + deltaTime);
            deltaTime *= 16f;
        }
    }

    // [HarmonyPatch(typeof(movementScript), "Move")]
    public static class EmployeeMovementSpeedPatch {
        static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) {
            var codes = new List<CodeInstruction>(instructions);

            List<CodeInstruction> matcher = new List<CodeInstruction>();
            matcher.Add(new CodeInstruction(OpCodes.Ldarg_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldfld, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldarg_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldfld, null));
            matcher.Add(new CodeInstruction(OpCodes.Mul, null));

            List<CodeInstruction> patch = new List<CodeInstruction>();
            patch.Add(new CodeInstruction(OpCodes.Ldc_R4, 8));
            patch.Add(new CodeInstruction(OpCodes.Mul, null));

            for (var i = codes.Count - 1; i > 0; i--) {
                if (Main.IsMatch(codes, i, matcher)) {
                    Main.InsertAt(codes, i + 5, patch);
                    Console.WriteLine("Movement speed patched");
                    for (var j = 0; j < 15; j++) {
                        Console.WriteLine(codes[i + j]);
                    }
                    break;
                }
            }
            Console.WriteLine("Return");
            return codes.AsEnumerable();
        }
    }

    [HarmonyPatch(typeof(mainScript), "WochenUpdates")]
    public static class ContractWorkAmount {
        static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) {
            var codes = new List<CodeInstruction>(instructions);
            int methodIndex = -1;
            List<CodeInstruction> pattern = new List<CodeInstruction>();

            List<CodeInstruction> matcher = new List<CodeInstruction>();
            matcher.Add(new CodeInstruction(OpCodes.Ldarg_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldfld, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldc_I4_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Callvirt, null));

            for (var i = 0; i < codes.Count; i++) {
                if (codes[i].operand != null) {
                    if (codes[i].operand.ToString().Contains("UpdateContractWork")) {
                        methodIndex = i;
                        pattern.Add(codes[i - 3]);
                        pattern.Add(codes[i - 2]);
                        pattern.Add(codes[i - 1]);
                        pattern.Add(codes[i]);
                        break;
                    }
                }
            }
            pattern[2].opcode = OpCodes.Ldc_I4_1;

            for (int i = 0; i < 16; i++) {
                for (int j = 0; j < pattern.Count; j++) {
                    codes.Insert(methodIndex + i + j, pattern[j]);
                }
            }

            return codes.AsEnumerable();
        }
    }

    [HarmonyPatch(typeof(platformScript), "SellPlayer")]
    public static class ConsoleProductionReductionPatch {
        static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) {
            var codes = new List<CodeInstruction>(instructions);

            List<CodeInstruction> matcher = new List<CodeInstruction>();
            matcher.Add(new CodeInstruction(OpCodes.Ldarg_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldarg_0, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldfld, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldc_R4, null));
            matcher.Add(new CodeInstruction(OpCodes.Ldc_R4, null));
            matcher.Add(new CodeInstruction(OpCodes.Call, null));
            matcher.Add(new CodeInstruction(OpCodes.Add, null));
            matcher.Add(new CodeInstruction(OpCodes.Stfld, null));

            for (var i = 0; i < codes.Count; i++) {
                if (Main.IsMatch(codes, i, matcher)) {
                    codes[i + 3].operand = (float)codes[i + 3].operand * 8f;
                    codes[i + 4].operand = (float)codes[i + 4].operand * 8f;
                    Console.WriteLine("ConsoleProductionReductionPatch patched");
                    break;
                }
            }

            return codes.AsEnumerable();
        }
    }

    [HarmonyPatch(typeof(mainScript), "AddFans")]
    public static class AddFansPatch {
        static void Prefix(ref int i) {
            // Console.WriteLine("GetWorkResult Postfix! f is " + f);
            i *= Main.fans.Value;
        }
    }

    [HarmonyPatch(typeof(mainScript), "Earn")]
    public static class AddMoneyPatch {
        static void Prefix(ref long amount) {
            // Console.WriteLine("GetWorkResult Postfix! f is " + f);
            amount *= Main.money.Value;
        }
    }
}