using NewHorizons.External;
using NewHorizons.Handlers;
using NewHorizons.Utility;
using OWML.Common;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using UnityEngine;
using Logger = NewHorizons.Utility.Logger;
using Random = UnityEngine.Random;

namespace NewHorizons.Builder.Props
{
    public static class NomaiTextBuilder
    {
        private static List<GameObject> _arcPrefabs;
        private static List<GameObject> _childArcPrefabs;
        private static List<GameObject> _ghostArcPrefabs;
        private static GameObject _scrollPrefab;
        private static GameObject _computerPrefab;
        private static GameObject _cairnPrefab;
        private static GameObject _recorderPrefab;

        private static void InitPrefabs()
        {
            // Just take every scroll and get the first arc
            var existingArcs = GameObject.FindObjectsOfType<ScrollItem>().Select(x => x?._nomaiWallText?.gameObject?.transform?.Find("Arc 1")?.gameObject).Where(x => x != null).ToArray();
            _arcPrefabs = new List<GameObject>();
            _childArcPrefabs = new List<GameObject>();
            foreach (var existingArc in existingArcs)
            {
                if (existingArc.GetComponent<MeshRenderer>().material.name.Contains("Child"))
                {
                    var arc = existingArc.InstantiateInactive();
                    arc.name = "Arc (Child)";
                    _childArcPrefabs.Add(arc);
                }
                else
                {
                    var arc = existingArc.InstantiateInactive();
                    arc.name = "Arc";
                    _arcPrefabs.Add(arc);
                }
            }

            var existingGhostArcs = GameObject.FindObjectsOfType<GhostWallText>().Select(x => x?._textLine?.gameObject).Where(x => x != null).ToArray();
            _ghostArcPrefabs = new List<GameObject>();
            foreach (var existingArc in existingGhostArcs)
            {
                var arc = existingArc.InstantiateInactive();
                arc.name = "Arc";
                _ghostArcPrefabs.Add(arc);
            }

            _scrollPrefab = GameObject.Find("BrittleHollow_Body/Sector_BH/Sector_NorthHemisphere/Sector_NorthPole/Sector_HangingCity/Sector_HangingCity_District2/Interactables_HangingCity_District2/Prefab_NOM_Scroll").InstantiateInactive();
            _scrollPrefab.name = "Prefab_NOM_Scroll";

            _computerPrefab = GameObject.Find("VolcanicMoon_Body/Sector_VM/Interactables_VM/Prefab_NOM_Computer").InstantiateInactive();
            _computerPrefab.name = "Prefab_NOM_Computer";
            _computerPrefab.transform.rotation = Quaternion.identity;

            _cairnPrefab = GameObject.Find("BrittleHollow_Body/Sector_BH/Sector_Crossroads/Interactables_Crossroads/Trailmarkers/Prefab_NOM_BH_Cairn_Arc (1)").InstantiateInactive();
            _cairnPrefab.name = "Prefab_NOM_Cairn";
            _cairnPrefab.transform.rotation = Quaternion.identity;

            _recorderPrefab = GameObject.Find("Comet_Body/Prefab_NOM_Shuttle/Sector_NomaiShuttleInterior/Interactibles_NomaiShuttleInterior/Prefab_NOM_Recorder").InstantiateInactive();
            _recorderPrefab.name = "Prefab_NOM_Recorder";
            _recorderPrefab.transform.rotation = Quaternion.identity;
        }

        public static void Make(GameObject go, Sector sector, PropModule.NomaiTextInfo info, IModBehaviour mod)
        {
            if (_scrollPrefab == null) InitPrefabs();

            var xmlPath = System.IO.File.ReadAllText(mod.ModHelper.Manifest.ModFolderPath + info.xmlFile);

            if (info.type == "wall")
            {
                var nomaiWallTextObj = MakeWallText(go, sector, info, xmlPath).gameObject;

                nomaiWallTextObj.transform.parent = sector?.transform ?? go.transform;
                nomaiWallTextObj.transform.localPosition = info.position;
                if (info.normal != null)
                {
                    // In global coordinates (normal was in local coordinates)
                    var up = (nomaiWallTextObj.transform.position - go.transform.position).normalized;
                    var forward = go.transform.TransformDirection(info.normal).normalized;

                    nomaiWallTextObj.transform.up = up;
                    nomaiWallTextObj.transform.forward = forward;
                }
                if(info.rotation != null)
                {
                    nomaiWallTextObj.transform.localRotation = Quaternion.Euler(info.rotation);
                }

                nomaiWallTextObj.SetActive(true);
            }
            else if (info.type == "scroll")
            {
                var customScroll = _scrollPrefab.InstantiateInactive();

                var nomaiWallText = MakeWallText(go, sector, info, xmlPath);
                nomaiWallText.transform.parent = customScroll.transform;
                nomaiWallText.transform.localPosition = Vector3.zero;
                nomaiWallText.transform.localRotation = Quaternion.identity;

                nomaiWallText._showTextOnStart = false;

                // Don't want to be able to translate until its in a socket
                nomaiWallText.GetComponent<Collider>().enabled = false;

                nomaiWallText.gameObject.SetActive(true);

                var scrollItem = customScroll.GetComponent<ScrollItem>();

                // Idk why this thing is always around
                GameObject.Destroy(customScroll.transform.Find("Arc_BH_City_Forum_2").gameObject);

                // This variable is the bane of my existence i dont get it
                scrollItem._nomaiWallText = nomaiWallText;

                // Because the scroll was already awake it does weird shit in Awake and makes some of the entries in this array be null
                scrollItem._colliders = new OWCollider[] { scrollItem.GetComponent<OWCollider>() };

                // Else when you put them down you can't pick them back up
                customScroll.GetComponent<OWCollider>()._physicsRemoved = false;

                // Place scroll
                customScroll.transform.parent = sector?.transform ?? go.transform;
                customScroll.transform.localPosition = info.position ?? Vector3.zero;

                var up = customScroll.transform.localPosition.normalized;
                customScroll.transform.rotation = Quaternion.FromToRotation(customScroll.transform.up, up) * customScroll.transform.rotation;

                customScroll.SetActive(true);

                // Enable the collider and renderer
                Main.Instance.ModHelper.Events.Unity.RunWhen(
                    () => Main.IsSystemReady,
                    () =>
                    {
                        Logger.Log("Fixing scroll!");
                        scrollItem._nomaiWallText = nomaiWallText;
                        scrollItem.SetSector(sector);
                        customScroll.transform.Find("Props_NOM_Scroll/Props_NOM_Scroll_Geo").GetComponent<MeshRenderer>().enabled = true;
                        customScroll.transform.Find("Props_NOM_Scroll/Props_NOM_Scroll_Collider").gameObject.SetActive(true);
                        nomaiWallText.gameObject.GetComponent<Collider>().enabled = false;
                        customScroll.GetComponent<CapsuleCollider>().enabled = true;
                    }
                );
            }
            else if (info.type == "computer")
            {
                var computerObject = _computerPrefab.InstantiateInactive();

                computerObject.transform.parent = sector?.transform ?? go.transform;
                computerObject.transform.localPosition = info?.position ?? Vector3.zero;

                var up = computerObject.transform.position - go.transform.position;
                computerObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, up) * computerObject.transform.rotation;

                var computer = computerObject.GetComponent<NomaiComputer>();
                computer.SetSector(sector);

                computer._dictNomaiTextData = MakeNomaiTextDict(xmlPath);
                computer._nomaiTextAsset = new TextAsset(xmlPath);
                AddTranslation(xmlPath);

                // Make sure the computer model is loaded
                OWAssetHandler.LoadObject(computerObject);
                sector.OnOccupantEnterSector.AddListener((x) => OWAssetHandler.LoadObject(computerObject));

                computerObject.SetActive(true);
            }
            else if (info.type == "cairn")
            {
                var cairnObject = _cairnPrefab.InstantiateInactive();

                cairnObject.transform.parent = sector?.transform ?? go.transform;
                cairnObject.transform.localPosition = info?.position ?? Vector3.zero;

                if (info.rotation != null)
                {
                    cairnObject.transform.localRotation = Quaternion.Euler(info.rotation);
                }
                else
                {
                    // By default align it to normal
                    var up = (cairnObject.transform.position - go.transform.position).normalized;
                    cairnObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, up) * cairnObject.transform.rotation;
                }

                // Idk do we have to set it active before finding things?
                cairnObject.SetActive(true);

                // Make it do the thing when it finishes being knocked over
                foreach (var rock in cairnObject.GetComponent<NomaiCairn>()._rocks)
                {
                    rock._returning = false;
                    rock._owCollider.SetActivation(true);
                    rock.enabled = false;
                }

                // So we can actually knock it over
                cairnObject.GetComponent<CapsuleCollider>().enabled = true;

                var nomaiWallText = cairnObject.transform.Find("Props_TH_ClutterSmall/Arc_Short").GetComponent<NomaiWallText>();
                nomaiWallText.SetSector(sector);

                nomaiWallText._dictNomaiTextData = MakeNomaiTextDict(xmlPath);
                nomaiWallText._nomaiTextAsset = new TextAsset(xmlPath);
                AddTranslation(xmlPath);

                // Make sure the computer model is loaded
                OWAssetHandler.LoadObject(cairnObject);
                sector.OnOccupantEnterSector.AddListener((x) => OWAssetHandler.LoadObject(cairnObject));
            }
            else if (info.type == "recorder")
            {
                var recorderObject = _recorderPrefab.InstantiateInactive();

                recorderObject.transform.parent = sector?.transform ?? go.transform;
                recorderObject.transform.localPosition = info?.position ?? Vector3.zero;

                if (info.rotation != null)
                {
                    recorderObject.transform.localRotation = Quaternion.Euler(info.rotation);
                }
                else
                {
                    var up = recorderObject.transform.position - go.transform.position;
                    recorderObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, up) * recorderObject.transform.rotation;
                }

                var nomaiText = recorderObject.GetComponentInChildren<NomaiText>();
                nomaiText.SetSector(sector);

                nomaiText._dictNomaiTextData = MakeNomaiTextDict(xmlPath);
                nomaiText._nomaiTextAsset = new TextAsset(xmlPath);
                AddTranslation(xmlPath);

                // Make sure the recorder model is loaded
                OWAssetHandler.LoadObject(recorderObject);
                sector.OnOccupantEnterSector.AddListener((x) => OWAssetHandler.LoadObject(recorderObject));

                recorderObject.SetActive(true);

                recorderObject.transform.Find("InteractSphere").gameObject.GetComponent<SphereShape>().enabled = true;
            }
            else
            {
                Logger.LogError($"Unsupported NomaiText type {info.type}");
            }
        }

        private static NomaiWallText MakeWallText(GameObject go, Sector sector, PropModule.NomaiTextInfo info, string xmlPath)
        {
            GameObject nomaiWallTextObj = new GameObject("NomaiWallText");
            nomaiWallTextObj.SetActive(false);

            var box = nomaiWallTextObj.AddComponent<BoxCollider>();
            box.center = new Vector3(-0.0643f, 1.1254f, 0f);
            box.size = new Vector3(6.1424f, 5.2508f, 0.5f);

            box.isTrigger = true;

            nomaiWallTextObj.AddComponent<OWCollider>();
            var nomaiWallText = nomaiWallTextObj.AddComponent<NomaiWallText>();

            var text = new TextAsset(xmlPath);

            BuildArcs(xmlPath, nomaiWallText, nomaiWallTextObj, info);
            AddTranslation(xmlPath);
            nomaiWallText._nomaiTextAsset = text;

            nomaiWallText.SetTextAsset(text);

            return nomaiWallText;
        }

        private static void BuildArcs(string xml, NomaiWallText nomaiWallText, GameObject conversationZone, PropModule.NomaiTextInfo info)
        {
            var dict = MakeNomaiTextDict(xml);

            nomaiWallText._dictNomaiTextData = dict;

            Random.InitState(info.seed);

            var arcsByID = new Dictionary<int, GameObject>();

            if (info.arcInfo != null && info.arcInfo.Count() != dict.Values.Count())
            {
                Logger.LogError($"Can't make NomaiWallText, arcInfo length [{info.arcInfo.Count()}] doesn't equal text entries [{dict.Values.Count()}]");
                return;
            }

            var i = 0;
            foreach (var textData in dict.Values)
            {
                var textEntryID = textData.ID;
                var parentID = textData.ParentID;

                var parent = parentID == -1 ? null : arcsByID[parentID];

                GameObject arc;
                var type = info.arcInfo != null ? info.arcInfo[i].type : "adult";
                if (type == "child")
                {
                    arc = _childArcPrefabs[Random.Range(0, _childArcPrefabs.Count())].InstantiateInactive();
                }
                else if(type == "stranger" && _ghostArcPrefabs.Count() > 0) // It could be empty if they dont have the DLC
                {
                    arc = _ghostArcPrefabs[Random.Range(0, _ghostArcPrefabs.Count())].InstantiateInactive();
                }
                else
                {
                    arc = _arcPrefabs[Random.Range(0, _arcPrefabs.Count())].InstantiateInactive();
                }

                arc.transform.parent = conversationZone.transform;
                arc.GetComponent<NomaiTextLine>()._prebuilt = false;

                if (info.arcInfo != null)
                {
                    var a = info.arcInfo[i];
                    if (a.position == null) arc.transform.localPosition = Vector3.zero;
                    else arc.transform.localPosition = new Vector3(a.position.X, a.position.Y, 0);

                    arc.transform.localRotation = Quaternion.Euler(0, 0, a.zRotation);
                }
                // Try auto I guess
                else
                {
                    if (parent == null)
                    {
                        arc.transform.localPosition = Vector3.zero;
                    }
                    else
                    {
                        var points = parent.GetComponent<NomaiTextLine>().GetPoints();
                        var point = points[points.Count() / 2];

                        arc.transform.localPosition = point;
                        arc.transform.localRotation = Quaternion.Euler(0, 0, Random.Range(0, 360));
                    }
                }

                arc.GetComponent<NomaiTextLine>().SetEntryID(textEntryID);
                arc.GetComponent<MeshRenderer>().enabled = false;
                arc.name = $"Arc {++i}";

                arc.SetActive(true);

                arcsByID.Add(textEntryID, arc);
            }
        }

        private static Dictionary<int, NomaiText.NomaiTextData> MakeNomaiTextDict(string xmlPath)
        {
            var dict = new Dictionary<int, NomaiText.NomaiTextData>();

            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(xmlPath);
            XmlNode rootNode = xmlDocument.SelectSingleNode("NomaiObject");

            foreach (object obj in rootNode.SelectNodes("TextBlock"))
            {
                XmlNode xmlNode = (XmlNode)obj;

                int textEntryID = -1;
                int parentID = -1;

                XmlNode textNode = xmlNode.SelectSingleNode("Text");
                XmlNode entryIDNode = xmlNode.SelectSingleNode("ID");
                XmlNode parentIDNode = xmlNode.SelectSingleNode("ParentID");

                if (entryIDNode != null && !int.TryParse(entryIDNode.InnerText, out textEntryID))
                {
                    Logger.LogError($"Couldn't parse int ID in [{entryIDNode?.InnerText}] for [{xmlPath}]");
                    textEntryID = -1;
                }

                if (parentIDNode != null && !int.TryParse(parentIDNode.InnerText, out parentID))
                {
                    Logger.LogError($"Couldn't parse int ParentID in [{parentIDNode?.InnerText}] for [{xmlPath}]");
                    parentID = -1;
                }

                NomaiText.NomaiTextData value = new NomaiText.NomaiTextData(textEntryID, parentID, textNode, false, NomaiText.Location.UNSPECIFIED);
                dict.Add(textEntryID, value);
            }
            return dict;
        }

        private static void AddTranslation(string xmlPath)
        {
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.LoadXml(xmlPath);

            XmlNode xmlNode = xmlDocument.SelectSingleNode("NomaiObject");
            XmlNodeList xmlNodeList = xmlNode.SelectNodes("TextBlock");

            foreach (object obj in xmlNodeList)
            {
                XmlNode xmlNode2 = (XmlNode)obj;
                var text = xmlNode2.SelectSingleNode("Text").InnerText;
                TranslationHandler.AddDialogue(text);
            }
        }
    }
}