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

public class HighScoreManager : MonoBehaviour
{
    private Transform entryContainer;
    private Transform entryTemplate;
    private List<HighScoreEntry> highScoreEntryList;
    private List<Transform> highScoreEntryTransformList;
    [SerializeField] GameManager gameManager;
    [SerializeField] TimeController timeController;

    //To add new score: AddHighScoreEntry(10000, "60");

    private void Awake()
    {
        if (SceneManager.GetActiveScene().name.Equals("HighScores"))
        {
            LoadScores();
        }
    }


    private void LoadScores()
    {
        entryContainer = transform.Find("EntryContainer");
        entryTemplate = entryContainer.Find("EntryTemplate");
        entryTemplate.gameObject.SetActive(false);

        string jsonString = PlayerPrefs.GetString("highscoreTable");
        HighScores highScores = JsonUtility.FromJson<HighScores>(jsonString);

        highScoreEntryList = highScores.highscoreEntryList;
        highScoreEntryList.Sort((s2, s1) => s1.score.CompareTo(s2.score));
        highScoreEntryList = highScoreEntryList.GetRange(0, Mathf.Min(highScores.highscoreEntryList.Count, 10));

        highScoreEntryTransformList = new List<Transform>();
        foreach (HighScoreEntry highScoreEntry in highScoreEntryList)
        {
            CreateHighScoreEntryTransform(highScoreEntry, entryContainer, highScoreEntryTransformList);
        }
    }

    private void CreateHighScoreEntryTransform(HighScoreEntry entry, Transform container, List<Transform> transformList)
    {
        float templateHeight = 50f;
        Transform entryTransform = Instantiate(entryTemplate, container);
        RectTransform entryRectTransform = entryTransform.GetComponent<RectTransform>();
        entryRectTransform.anchoredPosition = new Vector2(0, -templateHeight * transformList.Count);
        entryTransform.gameObject.SetActive(true);

        entryTransform.Find("Rank").GetComponent<Text>().text = $"{transformList.Count + 1}";
        entryTransform.Find("Score").GetComponent<Text>().text = $"{entry.score}";
        entryTransform.Find("Time").GetComponent<Text>().text = entry.time;

        transformList.Add(entryTransform);
    }

    public void AddHighScoreEntry(int score, string time)
    {
        HighScoreEntry highScoreEntry = new HighScoreEntry { score = score, time = time };
        string jsonString = PlayerPrefs.GetString("highscoreTable");
        HighScores highScores = JsonUtility.FromJson<HighScores>(jsonString);
        highScores.highscoreEntryList.Add(highScoreEntry);

        string json = JsonUtility.ToJson(highScores);
        PlayerPrefs.SetString("highscoreTable", json);
        PlayerPrefs.Save();
    }

    private class HighScores
    {
        public List<HighScoreEntry> highscoreEntryList;
    }

    [System.Serializable]
    private class HighScoreEntry
    {
        public int score;
        public string time;
    }        
}