using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using TMPro;
public class RegionManager : MonoBehaviour
{
    public static RegionManager instance;
    [SerializeField]
    public static RegionServerData selectedServer;
    [SerializeField]
    public List<RegionServerData> servers = new List<RegionServerData>();
    public Button btn_auto;
    public TMP_Text[] selectedServerTxts;
    void Start()
    {
        UpdateServerData();

        UpdateSelectedRegion();

        foreach(RegionServerData server in servers){
            if(PlayerPrefs.HasKey("regionOverride")){
                if(PlayerPrefs.GetString("regionOverride") == server.name){
                    selectedServer = server;
                }
            }
            server.btn_select.onClick.AddListener(()=>{SetRegionOverride(server.name);});
        }
        btn_auto.onClick.AddListener(()=>{ SetRegionOverride(""); });
    }

    public void UpdateServerData(){
        StartCoroutine(updatePing());
    }

    IEnumerator updatePing(){
        for(int i=0;i < servers.Count;i++){
            WaitForSeconds f = new WaitForSeconds(0.05f);
            Ping p = new Ping(servers[i].ip);
            while (p.isDone == false)
            {
                yield return f;
            }

            if(p.time<=2){continue;}


            servers[i].ping = p.time;
            foreach(TMPro.TMP_Text pingTxt in servers[i].pingTxts){
                pingTxt.text = p.time + " ms";
                pingTxt.color = (p.time < 90) ? Color.green : (p.time < 140) ? Color.yellow : Color.red;
            }
            if(selectedServer == null || (!PlayerPrefs.HasKey("regionOverride") && selectedServer.ping > p.time)){ // <-- Auto select best server
                selectedServer = servers[i];
            }
        }
        yield return new WaitForSeconds(2);
        StartCoroutine(updatePing());
        UpdateSelectedRegion();
    }

    public void SetRegionOverride(string region){
        Debug.Log("Setting region override to " + region);
        foreach(RegionServerData server in servers){
            if(server.name == region){
                PlayerPrefs.SetString("regionOverride", region);
                PlayerPrefs.Save();
                selectedServer = server;
                UpdateSelectedRegion();
                return;
            }
        }

        //No server found for the said region
        PlayerPrefs.DeleteKey("regionOverride");
        PlayerPrefs.Save();

        UpdateSelectedRegion();
    }

    void UpdateSelectedRegion(){
        btn_auto.interactable = PlayerPrefs.HasKey("regionOverride");

        foreach(RegionServerData server in servers){
            server.btn_select.interactable = PlayerPrefs.HasKey("regionOverride") ? (server.name != PlayerPrefs.GetString("regionOverride")): true;
        }

        foreach(TMP_Text selectedServerTxt in selectedServerTxts){
            selectedServerTxt.text = PlayerPrefs.HasKey("regionOverride") ? PlayerPrefs.GetString("regionOverride") : "Auto - " + (selectedServer == null ? "/" : selectedServer.name);
        }
    }
}

[System.Serializable]
public class RegionServerData{
    public string name;
    public string ip;
    public int ping;
    public TMPro.TMP_Text[] pingTxts;
    public Button btn_select;
}