using System;
#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine;

namespace FIMSpace.Generating
{
    [System.Serializable]
    public class FUniversalVariable
    {
        public string VariableName = "Variable";
        [SerializeField] private string Tooltip = "";

        #region Tooltip refresh clean code helper

        bool _tooltipWasSet = false;
        public bool TooltipAssigned { get { return _tooltipWasSet; } }
        public void AssignTooltip(string tooltip)
        {
            if (_tooltipWasSet) return;
            Tooltip = tooltip;
            _tooltipWasSet = true;
        }

        #endregion

        /// <summary> For Number type, .w == 1 -> Int   0 -> Float </summary>
        [SerializeField] private Vector4 _value = Vector4.zero;
        [SerializeField] private string _string = "";
        [SerializeField] private AnimationCurve _curve = null;
        [SerializeField] private UnityEngine.Object _uObject = null;
        [SerializeField] private object _object = null;

        public FUniversalVariable(string name, object value)
        {
            VariableName = name;
            SetValue(value);
        }

        [NonSerialized] private int nameHash = 0;
        public int GetNameHash
        {
            get
            {
                if (nameHash == 0) nameHash = VariableName.GetHashCode();
                return nameHash;
            }
        }

        public enum EVariableType
        {
            Number, Bool, Vector2, Vector3, Color, String, Curve, UnityObject, CustomObject
        }

        public EVariableType VariableType = EVariableType.Number;

        public void SetValue(object o)
        {
            if (o is int) { _value = new Vector4((int)o, 0, 0, 1); VariableType = EVariableType.Number; }
            else if (o is float) { _value = new Vector4((float)o, 0, 0, 0); VariableType = EVariableType.Number; }
            else if (o is bool) { bool v = (bool)o; if (v) _value.x = 1; else _value.x = 0; VariableType = EVariableType.Bool; }
            else if (o is Vector2) { Vector2 v = (Vector2)o; _value = v; VariableType = EVariableType.Vector2; }
            else if (o is Vector3) { Vector3 v = (Vector3)o; _value = v; VariableType = EVariableType.Vector3; }
            else if (o is string) { _string = o as string; VariableType = EVariableType.String; }
            else if (o is Color) { Color c = (Color)o; _value = new Vector4(c.r, c.g, c.b, c.a); VariableType = EVariableType.Color; }
            else if (o is AnimationCurve) { _curve = o as AnimationCurve; VariableType = EVariableType.Curve; }
            else if (o is UnityEngine.Object) { _uObject = o as UnityEngine.Object; VariableType = EVariableType.UnityObject; }
            else { _object = o; VariableType = EVariableType.CustomObject; }
        }

        public int GetInt() { return (int)_value.x; }
        public float GetFloat() { return _value.x; }
        public bool GetBool() { return _value.x == 1; }
        public Color GetColor() { return new Color(_value.x, _value.y, _value.z, _value.w); }
        public Vector2 GetVector2() { return new Vector2(_value.x, _value.y); }
        public Vector3 GetVector3() { return new Vector3(_value.x, _value.y, _value.z); }
        public string GetString() { return _string; }
        public AnimationCurve GetCurve() { return _curve; }
        public UnityEngine.Object GetUnityObject() { return _uObject; }
        public object GetObject() { return _object; }


        public void SetMinMaxSlider(float min, float max)
        { _rangeHelper = new Vector4(min, max, 0, 0); }

        public void SetCurveFixedRange(float startTime, float startValue, float endTime, float endValue)
        { _rangeHelper = new Vector4(startTime, startValue, endTime, endValue); }


        [SerializeField] private Vector4 _rangeHelper = Vector4.zero;



        /// <summary> Returns true if gui changed </summary>
        public bool Editor_DisplayVariableGUI()
        {
#if UNITY_EDITOR
            EditorGUI.BeginChangeCheck();

            GUIContent nameG = new GUIContent(VariableName, Tooltip);

            if (VariableType == EVariableType.Number)
            {
                if (_value.w == 1) // Int
                {
                    if (_rangeHelper.x != _rangeHelper.y && _rangeHelper.y != 0)
                        _value.x = EditorGUILayout.IntSlider(nameG, (int)_value.x, (int)_rangeHelper.x, (int)_rangeHelper.y);
                    else
                        _value.x = EditorGUILayout.IntField(nameG, (int)_value.x);
                }
                else // Float
                {
                    if (_rangeHelper.x != _rangeHelper.y && _rangeHelper.y != 0)
                        _value.x = EditorGUILayout.Slider(nameG, _value.x, _rangeHelper.x, _rangeHelper.y);
                    else
                        _value.x = EditorGUILayout.FloatField(nameG, _value.x);
                }
            }
            else if (VariableType == EVariableType.Bool)
            {
                bool v = _value.x == 1;
                v = EditorGUILayout.Toggle(nameG, v);
                SetValue(v);
            }
            else if (VariableType == EVariableType.Vector2)
            {
                _value = EditorGUILayout.Vector2Field(nameG, _value);
            }
            else if (VariableType == EVariableType.Vector3)
            {
                _value = EditorGUILayout.Vector3Field(nameG, _value);
            }
            else if (VariableType == EVariableType.String)
            {
                _string = EditorGUILayout.TextField(nameG, _string);
            }
            else if (VariableType == EVariableType.Curve)
            {
                if (_rangeHelper == Vector4.zero)
                { _curve = EditorGUILayout.CurveField(nameG, _curve); }
                else
                {
                    var fixedRect = new Rect(_rangeHelper.x, _rangeHelper.y, _rangeHelper.z - _rangeHelper.x, _rangeHelper.w - _rangeHelper.y);
                    _curve = EditorGUILayout.CurveField(nameG, GetCurve(), Color.cyan, fixedRect);
                }
            }
            else if (VariableType == EVariableType.Color)
            {
                SetValue(EditorGUILayout.ColorField("Color:", GetColor()));
            }
            else if (VariableType == EVariableType.UnityObject)
            {
                _uObject = EditorGUILayout.ObjectField(nameG, _uObject, typeof(UnityEngine.Object), true);
            }
            else if (VariableType == EVariableType.CustomObject)
            {
                if (_object == null)
                    EditorGUILayout.LabelField("Containing Null");
                else
                    EditorGUILayout.LabelField("Containing custom, not serialized object");
            }

            return EditorGUI.EndChangeCheck();
#else
            return false;
#endif
        }

    }
}