using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
using Guedez.Database;
using Unity.Entities;
using UnityEngine;
using static EntityProcessor;

[LoaderType("equip")]
public class EquipmentProcessor : Processor {
    public EquipmentProcessor(bool isContainer) : base(isContainer) {
    }

    public struct BlendMod {
        public string name;
        public int value;
    }

    public class EquipmentDefinition {
        //public enum ItemClothSlots {
        //    Hair, Head, Neck, Torso_INNER, Torso_MID, Torso_OUTER, Arms, Legs, Feet, Hand_Left, Hand_Right, Hand_Any, Gloves, Belt
        //}
        //public enum EquipperType {
        //    DEFAULT, ADAM, GIRLS_HUMANOID, GIRLS_HALF
        //}
        public GameObject prefab;
        public bool selfBoned;
        public string attachBone;
        public BlendMod[] blends;
        public string[] types;
        public string[] slots = new string[0];
        public long entity;
        public ItemBehaviour[] behaviours = new ItemBehaviour[0];


    }
    private static readonly Dictionary<long, EquipmentDefinition> equips = new Dictionary<long, EquipmentDefinition>();
    internal static string[] types;
    internal static string[] slots;

    private static HashSet<string> _types;
    private static HashSet<string> _slots;

    public override void OnStartDatabaseLoad() {
        equips.Clear();
        _types = new HashSet<string>();
        _slots = new HashSet<string>();
    }
    public override void OnEndDatabaseLoad() {
        types = _types.ToArray();
        slots = _slots.ToArray();
    }

    public override object ProcessType(XElement element, List<object> parents) {
        DatabaseEntity entity = DatabaseLoader.GetFirst<DatabaseEntity>(parents);
        if (entity == null) {
            Debug.LogWarning("No entity to add Item to");
            return null;
        }
        EquipmentDefinition item;
        if (!equips.TryGetValue(entity.identifier, out item)) {
            item = new EquipmentDefinition();
        }
        item.prefab = DatabaseLoader.LoadResource<GameObject>(element.Element("prefab"));
        if (item.prefab == null) {
            return null;
        }
        equips[entity.identifier] = item;
        item.selfBoned = element.Element("selfBoned") != null;
        item.attachBone = DatabaseLoader.GetElementValueOrDefault(element.Element("attachBone"));
        item.entity = entity.identifier;

        item.slots = DatabaseLoader.GetElementValueAsList<string>(element.Elements("slot"));
        foreach (string s in item.slots) {
            _slots.Add(s.ToLower());
        }
        item.types = DatabaseLoader.GetElementValueAsList<string>(element.Elements("type"));
        item.blends = DatabaseLoader.GetElementValueAsList<BlendMod>(element.Elements("blend"));
        foreach (string t in item.types) {
            _types.Add(t.ToLower());
        }
        item.behaviours = loadBehaviours(element.Elements("behaviour"));
        //public GameObject prefab;
        //public bool selfBoned;
        //public string attachBone;
        //public string type;
        //public string[] slots = new string[0];
        //public long entity;
        //public ItemBehaviour[] behaviours = new ItemBehaviour[0];

        //< prefab > Items / Equipment / Seeds / Carrot Seed / Carrot Seed Bag</ prefab >
        //< !--< selfBoned /> -->
        //< attachBone > hand_R </ attachBone >
        //< type > ALL </ type >
        //< slots >
        //    < slot > MainHand </ slot >
        //</ slots >
        //< behaviour > Items / Equipment / Seeds / Carrot Seed / Carrot Seed Bag Behaiour </ behaviour >
        return item;
    }

    private ItemBehaviour[] loadBehaviours(IEnumerable<XElement> enumerable) {
        //
        List<ItemBehaviour> behavs = new List<ItemBehaviour>();
        foreach (XElement els in enumerable) {
            behavs.Add(loadBehaviour(els));
        }
        return behavs.ToArray();
    }

    private ItemBehaviour loadBehaviour(XElement els) {
        XElement path = els.Element("path");
        if (path != null) {
            ItemBehaviour itb = GameObject.Instantiate(DatabaseLoader.LoadResource<ItemBehaviour>(path));
            itb.loadProps(els);
            return itb;
        } else {
            return DatabaseLoader.LoadResource<ItemBehaviour>(els);
        }
    }

    public IEnumerable<KeyValuePair<long, EquipmentDefinition>> GetEquipmentsAndIndex() {
        return equips;
    }
    public IEnumerable<EquipmentDefinition> GetEquipments() {
        return equips.Values;
    }

    public EquipmentDefinition getEquipmentDef(long reference) {
        EquipmentDefinition ret;
        if (equips.TryGetValue(reference, out ret)) {
            return ret;
        }
        return null;
    }

}