using UnityEngine;
using System;
using System.Collections.Generic;
using UnityEngine.Events;
using Octopus.Simulator.Networks;
using Newtonsoft.Json;
using Octopus.Simulator;

#region class
[Serializable]
public class MoveDataClass_start
{
    public string move_id;
    public string move_label;
    public string type;
    public float move_time;
    public int capacity;
    public int products_per_batch;
    public List<InputQueue> input_queues;
    public string output_queue;
    public string defect_queue;
    public string required_resource;
    public float return_time;
    public int min_batch_size;
    public float loading_delay;
    public float unloading_delay;
}

[Serializable]
public class MoveDataClass_loading
{
    public string move_id;
    public string move_label;
    public int loaded_count;
    public List<string> source_queues;
    public List<string> source_stores;
    public float loading_delay;
}

[Serializable]
public class MoveDataClass_Request_Resource
{
    public string move_id;
    public string move_label;
}

[Serializable]
public class MoveDataClass_Resource_Acquired
{
    public string resource;
}

[Serializable]
public class MoveDataClass_Speed_Factor_Applied
{
    public float original;
    public float adjusted;
}

[Serializable]
public class MoveDataClass_Move_Moving
{
    public float time;
    public float loading_delay;
    public float unloading_delay;
    public MoveMovingInput input;
    public MoveMovingOutput output;
}

[Serializable]
public class MoveMovingInput
{
    public List<string> queues;
    public List<string> stores;
}
[Serializable]
public class MoveMovingOutput
{
    public string queue;
    public string store;
    public string defect_queue;
    public string defect_store;
}

[Serializable]
public class MoveDataClass_Arrived
{
    public int count;
}

[Serializable]
public class MoveDataClass_Unloading_Defect
{
    public string product_id;
    public string output_queue;
    public int output_queue_length;
    public float unloading_delay;
}

[Serializable]
public class MoveDataClass_Unloading_Defect_Store
{
    public string product_id;
    public string store_name;
    public int store_length;
    public float unloading_delay;
}

[Serializable]
public class MoveDataClass_Unloading
{
    public string product_id;
    public string output_queue;
    public int output_queue_length;
    public float unloading_delay;
}

[Serializable]
public class MoveDataClass_Unloading_Store
{
    public string product_id;
    public string store_name;
    public int store_queue_length;
    public float unloading_delay;
}

[Serializable]
public class MoveDataClass_returning
{
    public float return_time;
}

[Serializable]
public class MoveDataClassStatistics
{
    public statisticsMove statistics;
}

[Serializable]
public class statisticsMove
{
    public int total_moved;
}

public enum UnLoadingState
{
    store,
    queue,
    defectStore,
    defectQueue
}
#endregion

public class SimulationModelMove : SimulationModel
{
    [Header("Transport")]
    public List<GameObject> listProducts = new List<GameObject>();
    public Transform productPos;
    public Vector3 productDistance = new Vector3(0, 0.321f, 0);

    int productCount = 0;
    int currentCount = 0;
    int totalMoved = 0;
    bool isFirstTransport = true;

    Transform origin = null;
    public Transform destination = null;

    public float arrivalTime = 0;
    public float elapsedTime = 0;

    Vector3 originalPos;
    Vector3 prevPos;

    void Update()
    {
        if (!simulationUI.isplaying)
            return;

        UpdateProductStacking();
        UpdateMovement();
    }

    private void UpdateProductStacking()
    {
        if (productCount != listProducts.Count)
        {
            productCount = listProducts.Count;
            // 단순하게 모두 같은 offset으로 배치 (필요 시 i 기반 offset으로 확장)
            foreach (var gb in listProducts)
            {
                if (gb != null)
                {
                    gb.transform.localPosition = productDistance;
                }
            }
        }
    }

    private void UpdateMovement()
    {
        if (destination == null)
            return;

        elapsedTime += Time.deltaTime * WebParameters.speed;

        if (arrivalTime <= 0f)
            return;

        float t = elapsedTime / arrivalTime;
        if (t > 1f)
        {
            transform.position = destination.position;
            transform.forward = destination.forward;
            destination = null;
        }
        else
        {
            Vector3 newPos = Vector3.Lerp(originalPos, destination.position, t);
            transform.position = newPos;

            Vector3 dir = newPos - prevPos;
            dir.y = 0;
            if (dir.sqrMagnitude > 0.0001f)
            {
                dir.Normalize();
                transform.forward = dir;
            }

            prevPos = newPos;
        }
    }

    public override void GetData(string data)
    {
        var wrapclass = JsonConvert.DeserializeObject<SimulationDefaultJson>(data);
        if (wrapclass == null || string.IsNullOrEmpty(wrapclass._event))
            return;

        switch (wrapclass._event)
        {
            case "move_loading":
                LoadingCargo(wrapclass.data.ToString());
                break;
            case "move_moving":
                Moving(wrapclass.data.ToString());
                break;
            case "move_unloading":
                Unloading(wrapclass.data.ToString(), UnLoadingState.queue);
                break;
            case "move_unloading_store":
                Unloading(wrapclass.data.ToString(), UnLoadingState.store);
                break;
            case "move_unloading_defect":
                Unloading(wrapclass.data.ToString(), UnLoadingState.defectQueue);
                break;
            case "move_unloading_defect_store":
                Unloading(wrapclass.data.ToString(), UnLoadingState.defectStore);
                break;
            case "move_arrived":
                Arrive(wrapclass.data.ToString());
                break;
            case "move_speed_factor_applied":
                SpeedFactorApply(wrapclass.data.ToString());
                break;
            case "move_returning":
                Returning(wrapclass.data.ToString());
                break;
            case "move_statistics_update":
                totalMoved = JsonConvert.DeserializeObject<MoveDataClassStatistics>(wrapclass.data.ToString()).statistics.total_moved;
                SetBubble(totalMoved);
                break;
        }
    }

    private void LoadingCargo(string data)
    {
        var loading = JsonConvert.DeserializeObject<MoveDataClass_loading>(data);
        if (loading == null)
            return;

        currentCount = loading.loaded_count;
        SetBubble(currentCount);

        // 처음 운송이면 출발 위치 세팅
        if (isFirstTransport)
        {
            string sourceId = GetFirstNonEmpty(loading.source_queues, loading.source_stores);
            if (!string.IsNullOrEmpty(sourceId))
            {
                var sourceModel = DataManager.I.GetModel(sourceId) as SimulationModelStore;
                if (sourceModel != null)
                {
                    transform.position = sourceModel.GetTransporterPosition()?.position ?? transform.position;
                }
            }
            isFirstTransport = false;
        }

        AddProducts(loading.loaded_count);
    }

    private void Moving(string data)
    {
        var moveData = JsonConvert.DeserializeObject<MoveDataClass_Move_Moving>(data);
        if (moveData == null)
            return;

        elapsedTime = 0f;
        arrivalTime = moveData.time;
        originalPos = transform.position;
        prevPos = transform.position;

        string inputId = GetFirstNonEmpty(moveData.input?.queues, moveData.input?.stores);
        if (!string.IsNullOrEmpty(inputId))
        {
            var model = DataManager.I.GetModel(inputId) as SimulationModelStore;
            if (model != null)
                origin = model.GetTransporterPosition();
        }

        if (!string.IsNullOrEmpty(moveData.output?.queue))
        {
            var model = DataManager.I.GetModel(moveData.output.queue) as SimulationModelStore;
            if (model != null)
                destination = model.GetTransporterPosition();
        }
        else if (!string.IsNullOrEmpty(moveData.output?.store))
        {
            var model = DataManager.I.GetModel(moveData.output.store) as SimulationModelStore;
            if (model != null)
                destination = model.GetTransporterPosition();
        }
    }

    private string GetFirstNonEmpty(List<string> listA, List<string> listB)
    {
        if (listA != null && listA.Count > 0)
            return listA[0];
        if (listB != null && listB.Count > 0)
            return listB[0];
        return string.Empty;
    }

    private void AddProducts(int count)
    {
        for (int i = 0; i < count; i++)
        {
            var product = ProductManager.Instance.SpawnProduct();
            if (product == null)
                continue;

            product.GetComponent<SimulationModelProduct>().SetParent(this.nodeID);
            product.transform.parent = productPos;
            product.transform.localPosition = Vector3.zero;
            product.transform.localRotation = Quaternion.identity;
            listProducts.Add(product);
        }
    }

    private void Unloading(string data, UnLoadingState state)
    {
        string targetID = string.Empty;

        switch (state)
        {
            case UnLoadingState.store:
                var store = JsonConvert.DeserializeObject<MoveDataClass_Unloading_Store>(data);
                targetID = store?.store_name ?? string.Empty;
                break;
            case UnLoadingState.queue:
                var queue = JsonConvert.DeserializeObject<MoveDataClass_Unloading>(data);
                targetID = queue?.output_queue ?? string.Empty;
                break;
            case UnLoadingState.defectStore:
                var defectStore = JsonConvert.DeserializeObject<MoveDataClass_Unloading_Defect_Store>(data);
                targetID = defectStore?.store_name ?? string.Empty;
                break;
            case UnLoadingState.defectQueue:
                var defectQueue = JsonConvert.DeserializeObject<MoveDataClass_Unloading_Defect>(data);
                targetID = defectQueue?.output_queue ?? string.Empty;
                break;
        }

        if (string.IsNullOrEmpty(targetID))
            return;

        var model = DataManager.I.GetModel(targetID);
        if (model == null)
        {
            return;
        }

        var storeModel = model.GetComponent<SimulationModelStore>();

        if (listProducts.Count > 0)
        {
            var product = listProducts[0];
            // storeModel?.StoreProduct(product); // 필요 시 활성화
            listProducts.RemoveAt(0);
            Destroy(product);
        }
        else
        {
            Debug.LogWarning("Trying to unload from empty transporter : " + nodeID);
        }
    }

    private void Arrive(string data)
    {
        var arrived = JsonConvert.DeserializeObject<MoveDataClass_Arrived>(data);
        if (arrived == null)
            return;

        currentCount -= arrived.count;
        SetBubble(currentCount);
    }

    private void SpeedFactorApply(string data)
    {
        var speedData = JsonConvert.DeserializeObject<MoveDataClass_Speed_Factor_Applied>(data);
        if (speedData == null)
            return;

        float originalTime = speedData.original;
        float adjustedTime = speedData.adjusted;
        arrivalTime += adjustedTime - originalTime;
        elapsedTime = 0f;
        originalPos = transform.position;
        prevPos = transform.position;
    }

    private void Returning(string data)
    {
        var ret = JsonConvert.DeserializeObject<MoveDataClass_returning>(data);
        if (ret == null)
            return;

        elapsedTime = 0f;
        arrivalTime = ret.return_time;
        originalPos = transform.position;
        prevPos = transform.position;
        if (origin != null)
            destination = origin;
    }

    public override void SetBubble(object data)
    {
        string msg = $"{currentCount}/{totalMoved}";

        if (currentBubble == null)
        {
            // 생성
            currentBubble = Instantiate(bubbleUIPrefab, FindAnyObjectByType<Canvas_Bubble>().transform);
            currentBubble.target = DataBubbleSocket;
            currentBubble.worldOffset = new Vector3(0, 2.0f, 0);  // 필요에 따라 조절
            currentBubble.GetComponent<RectTransform>().SetAsFirstSibling();
        }
        // 텍스트 갱신
        currentBubble.SetMessage(msg);
        List<string> datas = new List<string>
        {
            currentCount.ToString(),
            totalMoved.ToString()
        };
        currentBubble.SetDetail(datas, logicType.move, LogicUIManager.instance.GetItemLabelByID(nodeID));
    }
}