using UnityEngine;
using System.Collections.Generic;
using UnityEngine.Serialization;

public class ModelManager : MonoBehaviour
{
    private Dictionary<string, HashSet<ChildModel>> _portDict; //port mapped on 
    private Dictionary<string, ChildModel> _childModelDict; //childModels by their ID

    private List<BaseModel> _baseModelList; //available BaseModels
    
    public GameObject baseModelGO; //GameObject of the BaseModel
    public BaseModel BaseModel  //current baseModel Phenotype
    {
        get { return baseModelGO.GetComponent<BaseModelBehaviour>().BaseModel; }
    }
    public BaseModelBehaviour BaseModelBehaviour;
    public BaseModelSelector baseModelSelector;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        Debug.Log("ModelManager: " + gameObject.name);
        _portDict = new Dictionary<string, HashSet<ChildModel>>();
        _childModelDict = new Dictionary<string, ChildModel>();
        _baseModelList = new List<BaseModel>();
        //baseModelSelector = FindFirstObjectByType<BaseModelSelector>();
        
        foreach (var baseModel in ModelList.BaseModels)
        {
            RegisterBaseModel(baseModel);
        }

        foreach (var childModel in ModelList.ChildModels)
        {
            RegisterChildModel(childModel);
        }
        if (baseModelGO == null) //set in the editor
        {
            //TODO: send into model selection
            Debug.LogError("baseModel is null, fix the configuration");
        }
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    void RegisterChildModel(ChildModel model)
    {
        //childModelDict
        if (_childModelDict.ContainsKey(model.NameId))
        {
            Debug.LogWarning("Model " + model.NameId + " already registered! [childModelDict] Skipping...");
            return;
        }
        _childModelDict[model.NameId] = model;
        
        if (string.IsNullOrEmpty(model.Port))
        {
           _portDict.Add("null", new HashSet<ChildModel>());
            return;
        }
        //portDict
        if (!_portDict.ContainsKey(model.Port))
        {
            _portDict.Add(model.Port, new HashSet<ChildModel>());
        }
        if (_portDict[model.Port].Contains(model))
        {
            Debug.LogWarning("Model " + model.NameId + " already registered! [portDict] Skipping...");
            return;
        }
        _portDict[model.Port].Add(model);
    }

    void RegisterBaseModel(BaseModel baseModel)
    {
        if (baseModel == null)
        {
            return;
        }
        _baseModelList ??= new List<BaseModel>();
        _baseModelList.Add(baseModel);
    }

    public HashSet<ChildModel> GetChildModelsForPort(string port)
    {
        // Check if key exists in the dictionary
        if (_portDict.TryGetValue(port, out HashSet<ChildModel> childModels))
        {
            return childModels; // Return childModels of the port
        }
        else
        {
            // Warning and return empty set if key not found
            Debug.LogWarning($"No model found for port {port}.");
            return new HashSet<ChildModel>();
        }
    }

    public ChildModel GetById(string id)
    {
        return _childModelDict[id];
    }
    
    public void LoadSelectedModel(BaseModel baseModel)
    {
        //create if doesn't exist
        if (this.baseModelGO == null)
        {
            // Create new GameObject for the baseModel
            this.baseModelGO = new GameObject(baseModel.NameId)
            {
                name = baseModel.NameId,
            };
            this.baseModelGO.AddComponent<BaseModelBehaviour>();
            // Positioning
            this.baseModelGO.transform.position = new Vector3(0, 0, 1);
            this.baseModelGO.transform.rotation = Quaternion.Euler(0, 90, 0);
            this.baseModelGO.SetActive(true);
        }
        this.baseModelGO.GetComponent<BaseModelBehaviour>().BaseModel = baseModel;
        this.baseModelGO.SetActive(true);
        Debug.Log($"Model {baseModel.NameHuman} lock and loaded.");
    }

    public void OpenSelector()
    {
        Debug.Log("Open Selector");
        
        baseModelGO.SetActive(false);
        baseModelSelector.Activate();
    }
    
}