using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using Dreamteck.Splines;
using Ichni;
using Ichni.Editor;
using Ichni.RhythmGame;
using TMPro;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.InputSystem;
using UnityEngine.UI;

public class SampleWindow : MovableWindow//该window高度为300，横的要在100和500之间切换
{
    public static List<SampleWindow> instances = new List<SampleWindow>();
    public TMP_InputField DeviverInputField;
    public TMP_InputField verticalInputField;
    public TMP_InputField horizontalInputField;
    public RectTransform LineMovepoint;
    public RectTransform NoteMovepoint;

    public List<NoteBase> noteBases;
    public bool isFocus = false;
    public bool isExpand = false;
    public int beatDeviver = 100;
    public int Xdevide = 1;
    public float realDevider;
    public GameObject beatLinePrefabv;
    public GameObject beatLinePrefabh;
    public GameObject NotePrefab;
    float songTime => EditorManager.instance.songInformation.songTime;
    float songBeat => EditorManager.instance.songInformation.songBeat;
    float beatmapStartTime => -EditorManager.instance.songInformation.delay;
    float timePerBeat => 60f / EditorManager.instance.songInformation.bpm;
    public GameElement gameElement;
    public SplinePositioner trackPositioner = null;
    public GameObject trackHead;
    public void Initialize(GameElement qgameElement, string title)
    {
        closeButton.onClick.AddListener(() =>
                    {
                        instances.Remove(this);
                    });
        if (instances.Where(i => i.gameElement == qgameElement).Count() != 0)
        {
            Destroy(this.gameObject);
            foreach (SampleWindow i in instances)
            {
                i.StartCoroutine(WindowAnim.Shake(instances.Where(i => i.gameElement == qgameElement).First().windowRect.gameObject));

            }
            return;
        }
        this.gameElement = qgameElement;
        if (qgameElement is Track track)
        {
            trackPositioner = this.gameObject.AddComponent<SplinePositioner>();
            trackPositioner.spline = track.trackPathSubmodule.path;
            trackPositioner.enabled = isFocus;
            trackPositioner.targetObject = trackHead;
        }
        InitializeWindow(title);


        //
        SpawnBeatline();
        OnceSpawnNote();
        instances.Add(this);
    }
    public void SpawnBeatline()//添加优化措施

    {
        for (int i = LineMovepoint.childCount - 1; i >= 0; i--)
        {
            Destroy(LineMovepoint.GetChild(i).gameObject);
        }
        for (int i = 0; i < (int)EditorManager.instance.songInformation.song.length / timePerBeat; i++)
        {


            for (int j = 1; j < Xdevide; j++)
            {
                GameObject v = Instantiate(beatLinePrefabh, LineMovepoint);
                v.transform.localPosition = new Vector3(0, i * beatDeviver + (beatDeviver / Xdevide * j), 0);
                RawImage g = v.GetComponent<RawImage>();
                g.color = new Color(0, g.color.g, g.color.b, 0.2f);
                if (v.transform.localPosition.y > 600)
                {
                    Destroy(v);
                    break;
                }
            }


            GameObject u = Instantiate(beatLinePrefabh, LineMovepoint);
            u.transform.localPosition = new Vector3(0, i * beatDeviver, 0);

            if (u.transform.localPosition.y > 600)
            {
                Destroy(u);
                break;
            }
        }
    }

    public void OnceSpawnNote()
    {
        if (gameElement is Track track) noteBases = track.GetAllNotes();
        else if (gameElement is ElementFolder elementFolder) noteBases = elementFolder.GetAllNotes();
        for (int i = NoteMovepoint.childCount - 1; i >= 0; i--)
        {
            Destroy(NoteMovepoint.GetChild(i).gameObject);
        }
        foreach (var i in noteBases)
        {
            SpawnNote(i);
        }
    }
    private void SpawnNote(NoteBase i, float posx = 0)
    {
        GameObject u = Instantiate(NotePrefab, NoteMovepoint);
        u.GetComponent<NotefabContoler>().Initialize(i, timePerBeat, beatDeviver);
    }

    public GameObject selectedGameObject;
    void Update()
    {
        selectedGameObject = EventSystem.current.currentSelectedGameObject;
        LineMovepoint.localPosition = new(0, -beatDeviver * (songBeat - (int)songBeat), 0);
        NoteMovepoint.localPosition = new(0, -beatDeviver * songBeat, 0);
        if (isFocus && gameElement is Track track)
        {
            if (track.trackTimeSubmodule is TrackTimeSubmoduleMovable trackTimeSubmoduleMovable)
            {
                trackPositioner.SetPercent(track.trackTimeSubmodule.headPercent);
                windowRect.GetComponent<CanvasGroup>().alpha = (songTime >= trackTimeSubmoduleMovable.trackStartTime && songTime <= trackTimeSubmoduleMovable.trackEndTime) ? 1f : 0.2f;

            }
            else if (track.trackTimeSubmodule is TrackTimeSubmoduleStatic)
            {
                trackPositioner.SetPercent(0f);
            }
            TransformChanged();
            windowRect.GetComponent<CanvasGroup>().alpha = track.timeDurationSubmodule.CheckTimeInDuration(songTime) ? 1f : 0.2f;
        }
        if (selectedGameObject is null && RectTransformUtility.RectangleContainsScreenPoint(windowRect, Mouse.current.position.ReadValue()))
        {
            DetectNote();

        }

    }
    void TransformChanged()
    {
        RectTransform canvasRect = EditorManager.instance.inspectorCanvas.GetComponent<RectTransform>();
        Vector2 ScreenPosition = EditorManager.instance.cameraManager.currentCamera.WorldToScreenPoint(trackHead.transform.position);

        if (RectTransformUtility.ScreenPointToLocalPointInRectangle(canvasRect, ScreenPosition, null, out Vector2 uiPosition))
        {
            windowRect.anchoredPosition = new Vector2(uiPosition.x, uiPosition.y + 150f);
        }
    }
    public void ChangeFocus()
    {
        isFocus = !isFocus;
        if (trackPositioner != null) trackPositioner.enabled = isFocus;
    }
    public void ChangeXdevide(string devide)
    {
        Xdevide = int.Parse(devide);
        SpawnBeatline();
    }
    public void ChangeBeatdevide(string devide)
    {
        beatDeviver = int.Parse(devide);
        SpawnBeatline();
        OnceSpawnNote();
    }
    public void ChangeExpand()
    {
        if (isExpand)
        {
            isExpand = false;
            windowRect.sizeDelta = new Vector2(100, windowRect.sizeDelta.y);
        }
        else
        {
            isExpand = true;
            windowRect.sizeDelta = new Vector2(500, windowRect.sizeDelta.y);
        }
    }
    public void DetectNote()
    {
        if (Keyboard.current.digit1Key.wasPressedThisFrame)
            AddNote(0);
        else if (Keyboard.current.digit2Key.wasPressedThisFrame)
            AddNote(1);
        else if (Keyboard.current.digit3Key.wasPressedThisFrame)
            AddNote(2);
        else if (Keyboard.current.digit4Key.wasPressedThisFrame)
            AddNote(3);
    }
    public void AddNote(int NoteCode)
    {
        // 获取鼠标在 NoteMovepoint 中的相对位置
        Vector2 localMousePosition = NoteMovepoint.InverseTransformPoint(Mouse.current.position.ReadValue());
        Debug.Log(localMousePosition);
        float mouseBeat = localMousePosition.y / beatDeviver;
        float far = 0f;
        while (far < mouseBeat)
        {
            far += 1f / Xdevide;
        }
        far -= 1f / Xdevide;
        float time = far * timePerBeat;

        if (!isExpand)//movable
        {
            switch (NoteCode)
            {
                case 0:
                    Tap a = Tap.GenerateElement("New Tap", Guid.NewGuid(), new List<string>(), false, gameElement, time);
                    noteBases.Add(a);
                    SpawnNote(a);
                    break;
                case 3:
                    Hold b = Hold.GenerateElement("New Hold", Guid.NewGuid(), new List<string>(), false, gameElement, time, time + 0.5f);
                    noteBases.Add(b);
                    SpawnNote(b);
                    break;
                case 1:
                    Stay c = Stay.GenerateElement("New Stay", Guid.NewGuid(), new List<string>(), false, gameElement, time);
                    noteBases.Add(c);
                    SpawnNote(c);
                    break;
                case 2:
                    Flick d = Flick.GenerateElement("New Flick", Guid.NewGuid(), new List<string>(), false, gameElement, time, new List<Vector2>());
                    noteBases.Add(d);
                    SpawnNote(d);
                    break;
            }

        }
    }
}