using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class RingSpaceEditor : EditorWindow
{
    private bool m_ringSpaceEnabled;
    private Tool m_lastTool;
    private RotationController m_ring;
    private Vector3 handlePosition;

    private int m_subdivions = 4;
    private bool m_CurveEachUpdate;

    private int m_DuplicateAmount;
    private float m_DuplicateAngle;


    // Add menu named "My Window" to the Window menu
    [MenuItem("Tools/Ring Space")]
    static void Init()
    {
        // Get existing open window or if none, make a new one:
        RingSpaceEditor window = (RingSpaceEditor)EditorWindow.GetWindow(typeof(RingSpaceEditor));
        window.Show();
    }

    void OnGUI()
    {
        GUILayout.Label("Base Settings", EditorStyles.boldLabel);

        EditorGUILayout.BeginHorizontal();
        m_ring = EditorGUILayout.ObjectField(m_ring, typeof(RotationController),true) as RotationController;
        if (m_ring == null && m_ringSpaceEnabled)
            SetRingSpace(false);

        GUI.enabled = m_ring != null;
        if (GUILayout.Button((m_ringSpaceEnabled ? "Disable" : "Enable") + " Ring Space"))
            SetRingSpace(!m_ringSpaceEnabled);
        GUI.enabled = true;
        EditorGUILayout.EndHorizontal();

        MeshGUI();
        DuplicationGUI();
    }



    private void OnDisable() {

            SetRingSpace(false);
    }

    private void SetRingSpace(bool value)
    {
        m_ringSpaceEnabled = value;
        Tools.hidden = m_ringSpaceEnabled;

        if(m_ringSpaceEnabled)
            SceneView.duringSceneGui += this.OnSceneGUI;

        else
            SceneView.duringSceneGui -= this.OnSceneGUI;

        SceneView.RepaintAll();
    }

    public void OnSelectionChange()
    {
        Debug.Log("Selection changed");
        if (Selection.activeGameObject != null)
            handlePosition = Selection.activeGameObject.transform.position;
    }

    void OnSceneGUI(SceneView sceneView)
    {
        // Do your drawing here using Handles.
        GameObject selectedObject = Selection.activeGameObject;

        if (selectedObject == null)
            return;

        EditorGUI.BeginChangeCheck();
        handlePosition = Handles.PositionHandle(selectedObject.transform.position, selectedObject.transform.rotation);
        if (EditorGUI.EndChangeCheck())
        {
            Debug.Log("Finished moving");
            Undo.RecordObject(selectedObject.transform, "Changed Position");
            selectedObject.transform.position = handlePosition;
            selectedObject.transform.rotation = m_ring.getUpRotation(selectedObject.transform.position);

            if (m_CurveEachUpdate)
                CurveMesh(selectedObject);

        }






        Handles.BeginGUI();
        // Do your drawing here using GUI.
        Handles.EndGUI();
    }

    void MeshGUI()
    {
        GUILayout.Space(20);
        GUILayout.Label("Mesh Settings", EditorStyles.boldLabel);

        GUILayout.BeginHorizontal();

        m_subdivions = EditorGUILayout.IntField(m_subdivions,GUILayout.Width(50));

        if(GUILayout.Button("Subdivide Mesh") && Selection.activeGameObject != null)
        {
            SubdividMesh(Selection.activeGameObject);
        }

        GUILayout.EndHorizontal();

        GUILayout.BeginHorizontal();

        m_CurveEachUpdate = EditorGUILayout.Toggle(m_CurveEachUpdate, GUILayout.Width(50));

        if (GUILayout.Button("Curve Mesh") && Selection.activeGameObject != null)
        {
            CurveMesh(Selection.activeGameObject);
        }

        GUILayout.EndHorizontal();

        if (GUILayout.Button("Reset Mesh")&& Selection.activeGameObject != null)
        {
            MeshData _meshdata = Selection.activeGameObject.GetComponent<MeshData>();
            if (_meshdata != null)
                _meshdata.Remove();
                
        }

    }

    void DuplicationGUI()
    {
        GUILayout.Space(20);
        GUILayout.Label("Duplication Settings", EditorStyles.boldLabel);
        GUILayout.BeginHorizontal();


        EditorGUILayout.PrefixLabel("Amount");
        m_DuplicateAmount = EditorGUILayout.IntField(m_DuplicateAmount, GUILayout.Width(100));
        GUILayout.FlexibleSpace();
        EditorGUILayout.PrefixLabel("Angle");
        m_DuplicateAngle = EditorGUILayout.FloatField(m_DuplicateAngle, GUILayout.Width(100));
        GUILayout.EndHorizontal();

        if (GUILayout.Button("Duplicate") && Selection.activeGameObject != null)
        {
            Duplicate(Selection.activeGameObject, m_DuplicateAmount, m_DuplicateAngle);
        }


    }

    private void SubdividMesh(GameObject selection)
    {
        MeshData _meshData = selection.GetComponent<MeshData>();
        if (_meshData == null)
            _meshData = MeshData.Add(selection);

        _meshData.SubdivideMesh(m_subdivions);
    }

    private void CurveMesh(GameObject selection)
    {
        MeshData _meshData = selection.GetComponent<MeshData>();
        if (_meshData == null)
            _meshData = MeshData.Add(selection);
     
        _meshData.CurveMesh(m_ring.Position,m_ring.RotationAxis);
    }

    private void Duplicate(GameObject selection, int amount, float angle)
    {

        for (int i = 0; i < amount; i++)
        {

            GameObject clone = GameObject.Instantiate(selection, selection.transform.parent);

            clone.transform.RotateAround(m_ring.Position, m_ring.RotationAxis, angle * (i + 1));
            Undo.RegisterCreatedObjectUndo(clone, $"Duplicated {selection.name}");
        }


    }







}