using System;
using System.Linq;
using System.Reflection;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
using Oxide.Core;
using Oxide.Core.Plugins;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Facepunch;

#region Changelogs and ToDo
/**********************************************************************
* 
* 1.0.0     -   Initial release
* 1.1.0     -   Added a cfg for melee weapon settings
*           -   Added support for skins
*           -   Can set Random skins
*           -   Frankie will equip a sicle first then decides to draw another item instead
*                              
**********************************************************************/
#endregion

namespace Oxide.Plugins
{
    [Info("FrankiesWeapon", "Krungh Crow", "1.1.0")]

    [Description("Make Frankensteins pet wield different random melee weapons")]

    class FrankiesWeapon : RustPlugin
    {
        bool Debug = false;

        #region Configuration
        private ConfigData configData;

        class ConfigData
        {
            [JsonProperty(PropertyName = "Main config")]
            public SettingsPlugin PlugCFG = new SettingsPlugin();
        }

        class SettingsPlugin
        {
            [JsonProperty(PropertyName = "Debug")]
            public bool Debug = false;
            [JsonProperty(PropertyName = "Use Random Skins")]
            public bool RandomSkins { get; set; } = false;
            [JsonProperty(PropertyName = "Melee weapons" , ObjectCreationHandling = ObjectCreationHandling.Replace)]
            public List<MeleeList> Loot { get; set; } = DefaultList;
        }

        private bool LoadConfigVariables()
        {
            try
            {
                configData = Config.ReadObject<ConfigData>();
            }
            catch
            {
                return false;
            }
            SaveConf();
            return true;
        }

        protected override void LoadDefaultConfig()
        {
            Puts("Fresh install detected Creating a new config file.");
            configData = new ConfigData();
            SaveConf();
        }

        void SaveConf() => Config.WriteObject(configData , true);
        #endregion

        #region Hooks

        void Init()
        {
            if (!LoadConfigVariables())
            {
                Puts("Config file issue detected. Please delete file, or check syntax and fix.");
                return;
            }
            Debug = configData.PlugCFG.Debug;
            if (Debug) Puts($"[Debug] trigger for Debug is true");
        }

        void OnEntitySpawned(FrankensteinPet frankie)
        {
            if (frankie == null) return;
            var inv_belt = frankie.inventory.containerBelt;
            var inv_wear = frankie.inventory.containerWear;
            timer.Once(3f , () =>
            {
                inv_belt.Clear();
                GiveRandom(inv_belt , configData.PlugCFG.Loot.ToList());
                Item eyes = ItemManager.CreateByName("gloweyes" , 1 , 0);
                if (eyes != null) eyes.MoveToContainer(inv_wear);
                frankie.EquipWeapon();
            });
        }

        #endregion

        #region Melee weapon random System

        private Dictionary<string , List<ulong>> Skins { get; set; } = new Dictionary<string , List<ulong>>();

        private static List<MeleeList> DefaultList
        {
            get
            {
                return new List<MeleeList>
                {
                    new MeleeList { shortname = "machete", skin = 0 },
                    new MeleeList { shortname = "pitchfork", skin = 0 },
                    new MeleeList { shortname = "knife.bone", skin = 0 },
                    new MeleeList { shortname = "knife.butcher", skin = 0 },
                    new MeleeList { shortname = "longsword", skin = 0 },
                    new MeleeList { shortname = "mace", skin = 0 },
                    new MeleeList { shortname = "salvaged.cleaver", skin = 0 },
                    new MeleeList { shortname = "salvaged.sword", skin = 0 },
                    new MeleeList { shortname = "knife.combat", skin = 0 },
                    new MeleeList { shortname = "bone.club", skin = 0 },
                    new MeleeList { shortname = "spear.wooden", skin = 0 },
                    new MeleeList { shortname = "spear.stone", skin = 0 },
                };
            }
        }

        public class MeleeList
        {
            public string shortname { get; set; }
            public ulong skin { get; set; }
        }

        private void GiveRandom(ItemContainer container , List<MeleeList> loot)
        {
            if (Debug) Puts($"[Debug] Started GiveRandom routine");
            ItemDefinition def;
            List<ulong> skins;
            MeleeList meleeItem;

            if (loot.Count == 0) { return; }
            meleeItem = loot.GetRandom();
            loot.Remove(meleeItem);
            string shortname = meleeItem.shortname;
            def = ItemManager.FindItemDefinition(shortname);
            if (def == null)
            {
                if (Debug) Puts("Invalid shortname: {0}" , meleeItem.shortname);
                return;
            }

            ulong skin = meleeItem.skin;

            if (configData.PlugCFG.RandomSkins && skin == 0)
            {
                skins = GetItemSkins(def);

                if (skins.Count > 0) { skin = skins.GetRandom(); }
            }

            Item item = ItemManager.Create(def , 1 , skin);
            if (Debug) Puts("[Debug] {0} with skin {1} was used" , meleeItem.shortname, skin);
            if (!item.MoveToContainer(container , -1 , false)) { item.Remove(); }
            return;
        }

        private List<ulong> GetItemSkins(ItemDefinition def)
        {
            List<ulong> skins;
            if (!Skins.TryGetValue(def.shortname , out skins))
            {
                Skins[def.shortname] = skins = ExtractItemSkins(def , skins);
            }
            return skins;
        }

        private List<ulong> ExtractItemSkins(ItemDefinition def , List<ulong> skins)
        {
            skins = new List<ulong>();

            foreach (var skin in def.skins) { skins.Add(Convert.ToUInt64(skin.id)); }
            foreach (var asi in Rust.Workshop.Approved.All.Values)
            {
                if (!string.IsNullOrEmpty(asi.Skinnable.ItemName) && asi.Skinnable.ItemName == def.shortname)
                {
                    skins.Add(Convert.ToUInt64(asi.WorkshopdId));
                }
            }
            return skins;
        }
        #endregion
    }
}