using System;
using System.Collections.Generic;
using System.Linq;

using UnityEngine;
using UnityEngine.UIElements;

public class TimingUI : MonoBehaviour {
    [SerializeField]
    ShipControls ship;

    Timing timing;
    UIDocument uiDocument;

    VisualElement timer;
    VisualElement timerSectors;
    Label timerTime;
    Label timerPb;
    Label timerPosition;

    VisualElement notice;
    VisualElement noticeSectors;
    VisualElement noticeDiff;
    Label noticeMsg;
    Label noticeTime;
    Label noticePosition;

    bool ShouldHide => timing?.sectors.Count() == 0;

    static string[] completionMsgs = {
        "(⌐▨_▨)",
        "(⌐■_■)",
        "(⌐▼_▼)"
        // "(^_^)",
    };

    void OnEnable() {
        Init();
    }

    void Start() {
        Init();
    }

    public void Init() {
        if (ShouldHide) {
            Debug.Log("No sectors found, hiding timing.");
            uiDocument.enabled = false;
            return;
        }

        uiDocument = GetComponent<UIDocument>();
        timing = GetComponent<Timing>();

        notice = uiDocument.rootVisualElement.Q<VisualElement>("notice");
        noticeSectors = uiDocument.rootVisualElement.Q<VisualElement>("noticeSectors");

        timer = uiDocument.rootVisualElement.Q<VisualElement>("timer");
        timerSectors = uiDocument.rootVisualElement.Q<VisualElement>("timerSectors");

        noticeMsg = uiDocument.rootVisualElement.Q<Label>("noticeMsg");
        noticeTime = uiDocument.rootVisualElement.Q<Label>("noticeTime");
        noticeDiff = uiDocument.rootVisualElement.Q<VisualElement>("noticeDiff");

        timerTime = uiDocument.rootVisualElement.Q<Label>("timerTime");
        timerPb = uiDocument.rootVisualElement.Q<Label>("timerPb");

        noticePosition = uiDocument.rootVisualElement.Q<Label>("noticePosition");
        timerPosition = uiDocument.rootVisualElement.Q<Label>("timerPosition");

        timerPb.text = "-";
        noticePosition.text = "- / -";
        timerPosition.text = "- / -";

        notice.AddToClassList("hidden");
    }

    void FixedUpdate() {
        if (timer == null || timing == null) {
            Debug.LogWarning("no timer");
            Init();
            return;
        }

        timerTime.text = $"{TimeSpan.FromSeconds(timing.lapTime):m\\:ss\\.f}";

        // clearly this is not ideal but idk atm
        UpdateUI();
    }

    public void UpdateUI() {
        if (timerSectors == null) {
            Debug.LogWarning("null timerSectors");
            return;
        }

        if (timing == null) {
            Debug.LogWarning("null timing");
            return;
        }

        Lap timerPbLap = timing.Pb;
        if (timerPbLap != null)
            timerPb.text = $"{timerPbLap.ToString()}";

        timerSectors.Clear();

        foreach (Sector sector in timing.sectors) {
            Label l = timing.sectorTimes
                .Where(s => s.Sector == sector.sector)
                .Select(s => timing.CompareSector(s).ToLabel())
                .DefaultIfEmpty(new Label("-"))
                .Single();

            timerSectors.Add(l);
        }

        noticePosition.text = timing.Position;
        timerPosition.text = timing.Position;
    }

    public void ShowRecentLap(Lap lap) {
        Init();
        timer.AddToClassList("hidden");
        notice.RemoveFromClassList("hidden");

        noticeTime.text = lap.ToString();
        noticeDiff.Clear();
        noticeDiff.Add(timing.CompareLap(lap).ToLabel());

        // int msgIndex = UnityEngine.Random.Range(0, completionMsgs.Length);
        // noticeMsg.text = completionMsgs[msgIndex];

        noticeSectors.Clear();
        foreach (SectorTime sector in lap.Sectors) {
            Label l = timing.CompareSector(sector).ToLabel();
            noticeSectors.Add(l);
        }
    }

    public void HideRecentLap() {
        Init();
        timer.RemoveFromClassList("hidden");
        notice.AddToClassList("hidden");
    }
}