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



public class MoleculeFactory : MonoBehaviour{

    public TextAsset jsonFile;

    private static MoleculeFactory instance;

    private Molecules moleculesInJson;

    private Dictionary<string, Molecule>  moleculesDictionary; 

    public MoleculeFactory(TextAsset jsonFile){
        MoleculeFactory.instance = this;
        moleculesDictionary = new Dictionary<string, Molecule>();
        moleculesInJson = JsonUtility.FromJson<Molecules>(jsonFile.text);
        foreach (var molecule in moleculesInJson.molecules){
            moleculesDictionary.Add(molecule.formula, molecule);
        }
    }

    public static MoleculeFactory getInstrance(){
        if(MoleculeFactory.instance == null){
            Debug.LogError("no Json file");
        }
        return MoleculeFactory.instance;
    }

        public static MoleculeFactory getInstrance(TextAsset jsonFile){
        if(MoleculeFactory.instance == null){
            MoleculeFactory.instance = new MoleculeFactory(jsonFile);
        }
        return MoleculeFactory.instance;
    }

    public GameObject createMolecule (string formula){
        if(!moleculesDictionary.ContainsKey(formula)){
            Debug.LogError("molecules does not existe in json")
        }
        Molecule molecule = moleculesDictionary[formula];
        GameObject sortie = new GameObject(molecule.name);
        
        foreach (Atom atom in molecule.atoms) {
            GameObject Sphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
            sphere.transform.parent = sortie.transform;
            sphere.name = atom.element;
            sphere.transform.localPosition = new Vector3(atom.geometry[0], atom.geometry[1], atom.geometry[2]);
            //TODO: géré la taille de l'atome
            //TODO: géré la couleur de l'atome
        }
        return sortie;
    }

}