using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.UI;

public class SaveLoadPrep : MonoBehaviour
{
    public SaveLoadData saveLoadData;
    public Text txtPath;

    public Button saveBtn;
    public Button loadBtn;

    public GameObject saveContentPanel;
    public Button confirmSave;

    public GameObject loadContentPanel;
    public Transform loadContentParent;
    public GameObject loadContentItemPrefab;


    public static SaveLoadPrep instance;
    void Awake(){
        saveBtn.onClick.AddListener(Save);
        loadBtn.onClick.AddListener(ShowLoadContent);
        instance =this;

        
    }

    void Start(){
        if(PrepConnector.saveLoadData != null){
            saveLoadData = PrepConnector.saveLoadData;
            Debug.Log("Loading music file at " + saveLoadData.musicFile);   
            MusicLoader.instance.OnFileSelected(saveLoadData.musicFile, true);
            PrepController.instance.SetMarkers(saveLoadData.hits);
        }
    }


    public void ShowLoadContent(){
        loadContentPanel.SetActive(true);

        PopulateContentPanel();
    }

    public void OnFileSelected(string file){
        loadContentPanel.SetActive(false);
        LoadFile(Application.persistentDataPath + file);
    }

    public void LoadFile(string file){
        string fileTxt = File.ReadAllText(file);
        saveLoadData = JsonUtility.FromJson<SaveLoadData>(fileTxt);

        MusicLoader.instance.OnFileSelected(saveLoadData.musicFile, true);
        PrepController.instance.SetMarkers(saveLoadData.hits);
    }


    public void Save(){
        saveLoadData = new SaveLoadData(txtPath.text);
        List<float> unsortedHits = new List<float>();
        foreach(GameObject marker in PrepController.markers){
            unsortedHits.Add(marker.transform.position.x / AudioAnalyzer.instance.zoomingYMult);
        }

        saveLoadData.hits = Helpers.BubbleSort(unsortedHits);

        saveContentPanel.SetActive(true);
        string fileName = txtPath.text;
        if(fileName.Contains("/")){
            string[] bits = fileName.Split("/");
            fileName = bits[bits.Length-1];
        }else {
            string[] bits = fileName.Split("\\");
            fileName = bits[bits.Length-1];
        }
        fileName = fileName.Split('.')[0];
        saveContentPanel.GetComponentInChildren<InputField>().text = fileName;
    }

    public void SaveConfirmed(){
        saveContentPanel.SetActive(false);
        string fileName = Application.persistentDataPath + "/" + saveContentPanel.GetComponentInChildren<InputField>().text + ".json";
        Debug.Log("Saving to " + fileName);
        File.WriteAllText(fileName , JsonUtility.ToJson(saveLoadData));
    }

    public void PopulateContentPanel(){
        for(int i=0; i < loadContentParent.childCount; i++){

            Destroy(loadContentParent.GetChild(i).gameObject);
        }

        string[] files =Directory.GetFiles(Application.persistentDataPath);
        foreach(string file in files){
            if(!file.Contains(".json")){continue;}

            GameObject newItem = Instantiate(loadContentItemPrefab, loadContentParent);
            newItem.AddComponent<OnContentFileSelected>();
            newItem.GetComponentInChildren<Text>().text = file.Replace(Application.persistentDataPath, "");
        }

    }
}


[System.Serializable]
public class SaveLoadData{
    public string musicFile;
    public List<float> hits;   

    public SaveLoadData(string file){
        musicFile = file;
        hits = new List<float>();
    }
}