// ----------------------------------------------------------------------------
// <copyright file="PhotonGUI.cs" company="Exit Games GmbH">
//   PhotonNetwork Framework for Unity - Copyright (C) 2018 Exit Games GmbH
// </copyright>
// <summary>
//   GUI scripts for the Editor.
// </summary>
// <author>developer@exitgames.com</author>
// ----------------------------------------------------------------------------


using UnityEngine;
using UnityEditor;

namespace Photon.Pun
{
    public class PhotonGUI
    {
        #region Styles

        static GUIStyle m_DefaultTitleStyle;

        public static GUIStyle DefaultTitleStyle
        {
            get
            {
                if (m_DefaultTitleStyle == null)
                {
                    m_DefaultTitleStyle = new GUIStyle();
                    m_DefaultTitleStyle.border = new RectOffset(2, 2, 2, 1);
                    m_DefaultTitleStyle.margin = new RectOffset(5, 5, 5, 0);
                    m_DefaultTitleStyle.padding = new RectOffset(5, 5, 0, 0);
                    m_DefaultTitleStyle.alignment = TextAnchor.MiddleLeft;
                    m_DefaultTitleStyle.normal.background = ReorderableListResources.texTitleBackground;
                    m_DefaultTitleStyle.normal.textColor = EditorGUIUtility.isProSkin
                        ? new Color(0.8f, 0.8f, 0.8f)
                        : new Color(0.2f, 0.2f, 0.2f);
                }

                return m_DefaultTitleStyle;
            }
        }

        static GUIStyle m_DefaultContainerStyle;

        public static GUIStyle DefaultContainerStyle
        {
            get
            {
                if (m_DefaultContainerStyle == null)
                {
                    m_DefaultContainerStyle = new GUIStyle();
                    m_DefaultContainerStyle.border = new RectOffset(2, 2, 1, 2);
                    m_DefaultContainerStyle.margin = new RectOffset(5, 5, 5, 5);
                    m_DefaultContainerStyle.padding = new RectOffset(1, 1, 2, 2);
                    m_DefaultContainerStyle.normal.background = ReorderableListResources.texContainerBackground;
                }

                return m_DefaultContainerStyle;
            }
        }

        static GUIStyle m_DefaultAddButtonStyle;

        public static GUIStyle DefaultAddButtonStyle
        {
            get
            {
                if (m_DefaultAddButtonStyle == null)
                {
                    m_DefaultAddButtonStyle = new GUIStyle();
                    m_DefaultAddButtonStyle.fixedWidth = 30;
                    m_DefaultAddButtonStyle.fixedHeight = 16;
                    m_DefaultAddButtonStyle.normal.background = ReorderableListResources.texAddButton;
                    m_DefaultAddButtonStyle.active.background = ReorderableListResources.texAddButtonActive;
                }

                return m_DefaultAddButtonStyle;
            }
        }

        static GUIStyle m_DefaultRemoveButtonStyle;

        public static GUIStyle DefaultRemoveButtonStyle
        {
            get
            {
                if (m_DefaultRemoveButtonStyle == null)
                {
                    m_DefaultRemoveButtonStyle = new GUIStyle();
                    m_DefaultRemoveButtonStyle.fixedWidth = 30;
                    m_DefaultRemoveButtonStyle.fixedHeight = 20;
                    m_DefaultRemoveButtonStyle.active.background = ReorderableListResources.CreatePixelTexture("Dark Pixel (List GUI)", new Color32(18, 18, 18, 255));
                    m_DefaultRemoveButtonStyle.imagePosition = ImagePosition.ImageOnly;
                    m_DefaultRemoveButtonStyle.alignment = TextAnchor.MiddleCenter;
                }

                return m_DefaultRemoveButtonStyle;
            }
        }

        static GUIStyle m_DefaultContainerRowStyle;

        public static GUIStyle DefaultContainerRowStyle
        {
            get
            {
                if (m_DefaultContainerRowStyle == null)
                {
                    m_DefaultContainerRowStyle = new GUIStyle();
                    m_DefaultContainerRowStyle.border = new RectOffset(2, 2, 2, 2);

                    m_DefaultContainerRowStyle.margin = new RectOffset(5, 5, 5, 5);
                    m_DefaultContainerRowStyle.padding = new RectOffset(1, 1, 2, 2);
                    m_DefaultContainerRowStyle.normal.background = ReorderableListResources.texContainerBackground;
                }

                return m_DefaultContainerRowStyle;
            }
        }

        static GUIStyle m_FoldoutBold;

        public static GUIStyle FoldoutBold
        {
            get
            {
                if (m_FoldoutBold == null)
                {
                    m_FoldoutBold = new GUIStyle(EditorStyles.foldout);
                    m_FoldoutBold.fontStyle = FontStyle.Bold;
                }

                return m_FoldoutBold;
            }
        }

        static GUIStyle m_RichLabel;

        public static GUIStyle RichLabel
        {
            get
            {
                if (m_RichLabel == null)
                {
                    m_RichLabel = new GUIStyle(GUI.skin.label);
                    m_RichLabel.richText = true;
                    m_RichLabel.wordWrap = true;
                }

                return m_RichLabel;
            }
        }

        #endregion


        internal static string GetIconPath(string iconFileName)
        {
            string _thisIconPath = PhotonNetwork.FindAssetPath ("PhotonGUI");

            if (string.IsNullOrEmpty(_thisIconPath))
            {
                _thisIconPath = "Assets/Photon/PhotonUnityNetworking/Code/Editor/"+iconFileName;
            }
            else
            {
                _thisIconPath = _thisIconPath.Replace("PhotonGUI.cs", iconFileName);
            }

            return _thisIconPath;
        }
        
        static Texture2D m_HelpIcon;

        public static Texture2D HelpIcon
        {
            get
            {
                if (m_HelpIcon == null)
                {
                    m_HelpIcon = AssetDatabase.LoadAssetAtPath(GetIconPath("help.png"), typeof(Texture2D)) as Texture2D;
                }

                
                return m_HelpIcon;
            }
        }
        
        
        static Texture2D m_CopyIcon;
        static Texture2D m_CopyIconPro;
        
        public static Texture2D CopyIcon
        {
            get
            {
                if (EditorGUIUtility.isProSkin)
                {
                    if (m_CopyIconPro == null)
                    {
                        m_CopyIconPro = AssetDatabase.LoadAssetAtPath(GetIconPath("CopyIconPro.png"), typeof(Texture2D)) as Texture2D;
                    }

                    return m_CopyIconPro;
                }
                
                if (m_CopyIcon == null)
                {
                    m_CopyIcon = AssetDatabase.LoadAssetAtPath(GetIconPath("CopyIcon.png"), typeof(Texture2D)) as Texture2D;
                }

                return m_CopyIcon;
            }
        }

        #region Interface

        public static void ContainerHeader(string headline)
        {
            DoContainerHeader(headline, 27, 0);
        }

        public static bool ContainerHeaderToggle(string headline, bool toggle)
        {
            return DoContainerHeaderToggle(headline, toggle);
        }

        public static bool ContainerHeaderFoldout(string headline, bool foldout, System.Action buttonAction = null, string buttonName = null)
        {
            return DoContainerHeaderFoldout(headline, foldout, buttonAction, buttonName);
        }

        public static Rect ContainerBody(float height)
        {
            return DoContainerBody(height);
        }

        public static bool AddButton()
        {
            Rect controlRect = EditorGUILayout.GetControlRect(false, DefaultAddButtonStyle.fixedHeight - 5);
            controlRect.yMin -= 5;
            controlRect.yMax -= 5;

            Rect addButtonRect = new Rect(controlRect.xMax - DefaultAddButtonStyle.fixedWidth,
                                          controlRect.yMin,
                                          DefaultAddButtonStyle.fixedWidth,
                                          DefaultAddButtonStyle.fixedHeight);

            return GUI.Button(addButtonRect, "", DefaultAddButtonStyle);
        }

        public static void DrawSplitter(Rect position)
        {
            ReorderableListResources.DrawTexture(position, ReorderableListResources.texItemSplitter);
        }

        public static void DrawGizmoOptions(
            Rect position,
            string label,
            SerializedProperty gizmoEnabledProperty,
            SerializedProperty gizmoColorProperty,
            SerializedProperty gizmoTypeProperty,
            SerializedProperty gizmoSizeProperty)
        {
            float height = EditorGUIUtility.singleLineHeight;
            float flexibleWidth = Mathf.Max(40, position.width - EditorGUIUtility.labelWidth - 20 - 75 - 5 - 40 - 5);

            Rect labelRect = new Rect(position.xMin, position.yMin, EditorGUIUtility.labelWidth, height);
            GUI.Label(labelRect, label);

            Rect enabledRect = new Rect(labelRect.xMax, labelRect.yMin, 20, height);
            EditorGUI.PropertyField(enabledRect, gizmoEnabledProperty, GUIContent.none);

            bool oldGUIEnabled = GUI.enabled;
            GUI.enabled = gizmoEnabledProperty.boolValue;

            Rect colorRect = new Rect(enabledRect.xMax + 5, labelRect.yMin, 70, height);
            EditorGUI.PropertyField(colorRect, gizmoColorProperty, GUIContent.none);

            Rect typeRect = new Rect(colorRect.xMax + 5, labelRect.yMin, flexibleWidth * 0.7f, height);
            EditorGUI.PropertyField(typeRect, gizmoTypeProperty, GUIContent.none);

            Rect sizeLabelRect = new Rect(typeRect.xMax + 10, labelRect.yMin, 30, height);
            GUI.Label(sizeLabelRect, "Size");

            Rect sizeRect = new Rect(sizeLabelRect.xMax + 5, labelRect.yMin, flexibleWidth * 0.3f, height);
            EditorGUI.PropertyField(sizeRect, gizmoSizeProperty, GUIContent.none);

            GUI.enabled = oldGUIEnabled;
        }

        #endregion

        #region Implementation

        static Rect DoContainerBody(float height)
        {
            Rect controlRect = EditorGUILayout.GetControlRect(false, height);
            controlRect.yMin -= 3;
            controlRect.yMax -= 2;

            int controlID = GUIUtility.GetControlID(FocusType.Passive, controlRect);

            if (Event.current.type == EventType.Repaint)
            {
                PhotonGUI.DefaultContainerStyle.Draw(controlRect, GUIContent.none, controlID);
            }

            return controlRect;
        }

        static bool DoContainerHeaderToggle(string headline, bool toggle)
        {
            Rect rect = DoContainerHeader(headline, 27, 15);
            Rect toggleRect = new Rect(rect.xMin + 5, rect.yMin + 5, EditorGUIUtility.labelWidth, rect.height);

            return EditorGUI.Toggle(toggleRect, toggle);
        }


        static bool DoContainerHeaderFoldout(string headline, bool foldout, System.Action buttonAction = null, string buttonLabel = null, float buttonWidth = 48)
        {
            bool showButton = buttonAction != null;

            Rect rect = DoContainerHeader("", 27, 0f);

            // Shorten foldout label if button is present, so it doesn't interfere with clicking.
            float foldoutWidth = rect.width - (showButton ? 15 + buttonWidth: 15);
            Rect foldoutRect = new Rect(rect.xMin + 15, rect.yMin + 5, foldoutWidth, 16);

            bool expanded = EditorGUI.Foldout(foldoutRect, foldout, headline, FoldoutBold);

            // If a button is defined show it, and invoke action on click.
            if (showButton && GUI.Button(new Rect(foldoutRect) { x = foldoutRect.xMax, height = 17, width = buttonWidth - 4 }, buttonLabel == null ? "" : buttonLabel))
            {
                buttonAction.Invoke();
            }

            return expanded;
        }

        static Rect DoContainerHeader(string headline, float height, float contentOffset)
        {
            GUILayout.Space(5);
            Rect controlRect = EditorGUILayout.GetControlRect(false, height);

            int controlID = GUIUtility.GetControlID(FocusType.Passive, controlRect);

            if (Event.current.type == EventType.Repaint)
            {
                PhotonGUI.DefaultTitleStyle.Draw(controlRect, GUIContent.none, controlID);

                Rect labelRect = new Rect(controlRect.xMin + 5 + contentOffset, controlRect.yMin + 5, controlRect.width, controlRect.height);
                GUI.Label(labelRect, headline, EditorStyles.boldLabel);
            }

            return controlRect;
        }

        #endregion
    }
}