using UnityEngine;
using UnityEditor;
using UnityEngine.Networking;
using System.IO;
using System;

namespace UnityWebSocket.Editor
{
    internal class SettingsWindow : EditorWindow
    {
        static SettingsWindow window = null;
        [MenuItem("Tools/UnityWebSocket", priority = 100)]
        internal static void Open()
        {
            if (window != null)
            {
                window.Close();
            }

            window = GetWindow<SettingsWindow>(true, "UnityWebSocket");
            window.minSize = window.maxSize = new Vector2(600, 310);
            window.Show();
            window.BeginCheck();
        }

        private void OnGUI()
        {
            DrawLogo();
            DrawVersion();
            DrawSeparator(80);
            DrawSeparator(186);
            DrawHelper();
            DrawFooter();
        }

        Texture2D logoTex = null;
        private void DrawLogo()
        {
            if (logoTex == null)
            {
                logoTex = new Texture2D(66, 66);
                logoTex.LoadImage(Convert.FromBase64String(LOGO_BASE64.VALUE));
                for (int i = 0; i < 66; i++) for (int j = 0; j < 15; j++) logoTex.SetPixel(i, j, Color.clear);
                logoTex.Apply();
            }

            var logoPos = new Rect(10, 10, 66, 66);
            GUI.DrawTexture(logoPos, logoTex);
            var title = "<color=#3A9AD8><b>UnityWebSocket</b></color>";
            var titlePos = new Rect(80, 20, 500, 50);
            GUI.Label(titlePos, title, TextStyle(24));
        }

        private void DrawSeparator(int y)
        {
            EditorGUI.DrawRect(new Rect(10, y, 580, 1), Color.white * 0.5f);
        }

        private GUIStyle TextStyle(int fontSize = 10, TextAnchor alignment = TextAnchor.UpperLeft, float alpha = 0.85f)
        {
            var style = new GUIStyle();
            style.fontSize = fontSize;
            style.normal.textColor = (EditorGUIUtility.isProSkin ? Color.white : Color.black) * alpha;
            style.alignment = alignment;
            style.richText = true;
            return style;
        }

        private void DrawVersion()
        {
            GUI.Label(new Rect(440, 10, 150, 10), "Current Version:  " + Settings.VERSION, TextStyle(alignment: TextAnchor.MiddleLeft));
            if (string.IsNullOrEmpty(latestVersion))
            {
                GUI.Label(new Rect(440, 30, 150, 10), "Checking for Updates...", TextStyle(alignment: TextAnchor.MiddleLeft));
            }
            else if (latestVersion == "unknown")
            {

            }
            else
            {
                GUI.Label(new Rect(440, 30, 150, 10), "Latest Version:    " + latestVersion, TextStyle(alignment: TextAnchor.MiddleLeft));
                if (Settings.VERSION == latestVersion)
                {
                    if (GUI.Button(new Rect(440, 50, 150, 18), "Check Update"))
                    {
                        latestVersion = "";
                        changeLog = "";
                        BeginCheck();
                    }
                }
                else
                {
                    if (GUI.Button(new Rect(440, 50, 150, 18), "Update to | " + latestVersion))
                    {
                        Application.OpenURL(Settings.GITHUB + "/releases");
                    }
                }
            }
        }

        private void DrawHelper()
        {
            GUI.Label(new Rect(330, 200, 100, 18), "GitHub:", TextStyle(10, TextAnchor.MiddleRight));
            if (GUI.Button(new Rect(440, 200, 150, 18), "UnityWebSocket"))
            {
                Application.OpenURL(Settings.GITHUB);
            }

            GUI.Label(new Rect(330, 225, 100, 18), "Report:", TextStyle(10, TextAnchor.MiddleRight));
            if (GUI.Button(new Rect(440, 225, 150, 18), "Report an Issue"))
            {
                Application.OpenURL(Settings.GITHUB + "/issues/new");
            }

            GUI.Label(new Rect(330, 250, 100, 18), "Email:", TextStyle(10, TextAnchor.MiddleRight));
            if (GUI.Button(new Rect(440, 250, 150, 18), Settings.EMAIL))
            {
                var uri = new Uri(string.Format("mailto:{0}?subject={1}", Settings.EMAIL, "UnityWebSocket Feedback"));
                Application.OpenURL(uri.AbsoluteUri);
            }

            GUI.Label(new Rect(330, 275, 100, 18), "QQ Group:", TextStyle(10, TextAnchor.MiddleRight));
            if (GUI.Button(new Rect(440, 275, 150, 18), Settings.QQ_GROUP))
            {
                Application.OpenURL(Settings.QQ_GROUP_LINK);
            }
        }

        private void DrawFooter()
        {
            EditorGUI.DropShadowLabel(new Rect(10, 230, 400, 20), "Developed by " + Settings.AUHTOR);
            EditorGUI.DropShadowLabel(new Rect(10, 250, 400, 20), "All rights reserved");
        }

        UnityWebRequest req;
        string changeLog = "";
        string latestVersion = "";
        void BeginCheck()
        {
            EditorApplication.update -= VersionCheckUpdate;
            EditorApplication.update += VersionCheckUpdate;

            req = UnityWebRequest.Get(Settings.GITHUB + "/releases/latest");
            req.SendWebRequest();
        }

        private void VersionCheckUpdate()
        {
#if UNITY_2020_3_OR_NEWER
            if (req == null
                || req.result == UnityWebRequest.Result.ConnectionError
                || req.result == UnityWebRequest.Result.DataProcessingError
                || req.result == UnityWebRequest.Result.ProtocolError)
#elif UNITY_2018_1_OR_NEWER
            if (req == null || req.isNetworkError || req.isHttpError)
#else
            if (req == null || req.isError)
#endif
            {
                EditorApplication.update -= VersionCheckUpdate;
                latestVersion = "unknown";
                return;
            }

            if (req.isDone)
            {
                EditorApplication.update -= VersionCheckUpdate;
                latestVersion = req.url.Substring(req.url.LastIndexOf("/") + 1).TrimStart('v');

                if (Settings.VERSION != latestVersion)
                {
                    var text = req.downloadHandler.text;
                    var st = text.IndexOf("content=\"" + latestVersion);
                    st = st > 0 ? text.IndexOf("\n", st) : -1;
                    var end = st > 0 ? text.IndexOf("\" />", st) : -1;
                    if (st > 0 && end > st)
                    {
                        changeLog = text.Substring(st + 1, end - st - 1).Trim();
                        changeLog = changeLog.Replace("\r", "");
                        changeLog = changeLog.Replace("\n", "\n- ");
                        changeLog = "\nCHANGE LOG: \n- " + changeLog + "\n";
                    }
                }

                Repaint();
            }
        }
    }

    internal static class LOGO_BASE64
    {
        internal const string VALUE = "iVBORw0KGgoAAAANSUhEUgAAAEIAAABCCAMAAADUivDaAAAAq1BMVEUAAABKmtcvjtYzl" +
             "9szmNszl9syl9k0mNs0mNwzmNs0mNszl9szl9s0mNs0mNwzmNw0mNwyltk0mNw0mNwzl9s0mNsymNs0mNszmNwzmNwzm" +
             "NszmNs0mNwzl9w0mNwzmNw0mNs0mNs0mNwzl9wzmNs0mNwzmNs0mNwzl90zmNszmNszl9szmNsxmNszmNszmNw0mNwzm" +
             "Nw0mNs2neM4pe41mt43ouo2oOY5qfM+UHlaAAAAMnRSTlMAAwXN3sgI+/069MSCK6M/MA74h9qfFHB8STWMJ9OSdmNcI" +
             "8qya1IeF+/U0EIa57mqmFTYJe4AAAN3SURBVFjD7ZbpkppAFEa/bgVBREF2kEVGFNeZsM77P1kadURnJkr8k1Qlx1Khu" +
             "/pw7+2lwH/+YcgfMBBLG7VocwDamzH+wJBB8Qhjve2f0TdrGwjei6o4Ub/nM/APw5Z7vvSB/qrCrqbD6fBEVtigeMxks" +
             "fX9zWbj+z1jhqgSBplQ50eGo4614WXlRAzgrRhmtSfvxAn7pB0N5ObaKKZZuU5/d37IBcBgUQwqDuf7Z2gUmVAl4NGNr" +
             "/UeHxV5n39ulbaKLI86h6HilmM5M1aN126lpNhtl59yeTsp8nUMvpNC1J3bh5FtfVRk+bJrJunn5d4U4piJ/Vw9eXgsj" +
             "4ZpZaCjg9waZkIpnBWLJ44OwoNu60F2UnSaEkKv4XnAlCpm6B4F/aKMDiyGi2L8SEEAVdxNLuzmgV7nFwObEe2xQVuX+" +
             "RV1lWetga3w+cN1sXgvm4cJH8OEgZC1DPKhfF/BIymmQrMjq/x65FUeEkDup8GxoexZmznHCvANtXU/CAq13yimhQGtm" +
             "H4VCPnBBL1fTKo3CqEcvq7Lb/OwHxWTYlyw+JmjKoVvDLVOQB4pVsM8K8smgvLCxZDlIijwyOEc+nr/msMwK0+GQWGBd" +
             "tmhjv8icTds1s2ammaFh04QLLe69NK7guP6mTDMaw3o6nAX/Z7EXUskPSvWEWg4srVlp5NTDXv9Lce9HGN5eeG4nj5Yz" +
             "ACteU2wQLo4MBtJfd1nw5nG1/s9zwUQ6pykL1TQjqdeuvQW0naz2XKLYL4Cwzr4vj+OQdD96CSp7Lrynp4aeFF0xdm5q" +
             "6OFtFfPv7URxpWJNjd/N+3+I9+1klMav12Qtgbt9R2JaIopjkzaPtOFq4KxUpqfUMSFnQrySWjLoQzRZS4HMH84ME1ej" +
             "S1YJpQZ3B+sR1uCQJSBdGdCk1eAEgORR88KK05W8dh2MA+A/SKCYu3mCJ0Ek7HBx4HHeuwYy5G3x8hSMTJcOMFbinCsn" +
             "hO1V1aszGULvA0g4UFsb4VA0hAFcyo6cgLsAoT7uUtGAH5wQKQle0wuLyxLTaNyJEYwxw4wSljLK1TP8CAaOyhBMMEsj" +
             "OBoXgo7VGElFkSWL+vef1RF2YNXeRWYzQBTpkhC8KaZHhuIogArkQLKClBZjU26B2IZgGz+cpZkHl8g3fYUaW/YP2kb2" +
             "M/V97JY/vZN859n+QmO7XtC9Bf2jAAAAABJRU5ErkJggg==";
    }
}