using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using UnityEditor;
using COSXML;
using COSXML.Model.Object;
using UnityEngine;
using System.Threading.Tasks;
using System.Net.Http.Headers;
using System.Text;
using COSXML.Auth;
using COSXML.Model.Tag;
using COSXML.Transfer;
using Newtonsoft.Json;

namespace Metacity.Publish.Editor
{
    public enum ServerType
    {
        None, // no need server
        Official, // use official server
        Customize // use customize server
    }

    public delegate void FailedCallBack();

    public class MetacityBuildWindow : EditorWindow
    {
        private const string configPath = "config/config.json";

        private FailedCallBack _failedCallBack;

        private Config _config = new Config();
        private string _lastAccessToken = null;
        private bool _isTokenValid = false;
        private SerializedObject _portObject;
        private SerializedProperty _portsProperty;
        private SerializedProperty _envVerbsProperty;

        private readonly GUIStyle _errorStyle = new GUIStyle();
        private readonly GUIStyle _passStyle = new GUIStyle();

        public List<GameServerPort> gameServerPorts = new List<GameServerPort>();
        public List<EnvironmentVariable> environmentVariables = new List<EnvironmentVariable>();
        
        private float _process = 0.0f;
        private string _processNote = "";
        private bool _showProcessBar = false;

        private bool _isPublishClick = false;
        private PutObjectRequest _serverRequest;
        private PutObjectRequest _clientRequest;
        private COSXMLUploadTask _uploadTask;

        private void OnEnable()
        {
            _failedCallBack = CloseProcessBar;
            
            _portObject = new SerializedObject(this);
            _envVerbsProperty = _portObject.FindProperty("environmentVariables");
            _portsProperty = _portObject.FindProperty("gameServerPorts");

            _errorStyle.normal.textColor = Color.red; 
            _passStyle.normal.textColor = Color.green;
            _isPublishClick = false;
            
            LoadConfig();
        }

        private void OnDestroy()
        {
            SaveConfig();
        }

        private void LoadConfig()
        {
            string path = Path.Combine(Application.dataPath, configPath);
            if (!string.IsNullOrEmpty(path))
            {
                string dir = Path.GetDirectoryName(path);
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }
                
                if (!System.IO.File.Exists(path))
                {
                    _config = new Config();
                    var fs = System.IO.File.Create(path);
                    var json = JsonConvert.SerializeObject(_config);
                    byte[] array = Encoding.UTF8.GetBytes(json);
                    fs.Write(array);
                    fs.Close();
                    fs.Dispose();

                    return;
                }
                
                Config localConfig = JsonTools.FromFile<Config>(path);
                if (localConfig != null)
                {
                    _config = localConfig;
                    gameServerPorts = _config.gameServerPorts;
                    environmentVariables = _config.environmentVariables;
                }
                else
                {
                    Debug.LogError("failed to deserialize config data");
                }
            }
        }

        private void SaveConfig()
        {
            _config.gameServerPorts = gameServerPorts;
            _config.environmentVariables = environmentVariables;
            string path = Path.Combine(Application.dataPath, configPath);

            if (!string.IsNullOrEmpty(path))
            {
                string dir = Path.GetDirectoryName(path);
                if (!Directory.Exists(dir))
                {
                    Directory.CreateDirectory(dir);
                }

                if (!System.IO.File.Exists(path))
                {
                    var fs = System.IO.File.Create(path);
                    var json = JsonConvert.SerializeObject(_config);
                    byte[] array = Encoding.UTF8.GetBytes(json);
                    fs.Write(array);
                    fs.Close();
                    fs.Dispose();

                    return;
                }
                
                JsonTools.ToFile(_config, path);
            }
        }

        #region render UI
        
        private void OnGUI()
        {
            EditorGUILayout.BeginVertical();

            RenderHelper();

            EditorGUILayout.Space(10);

            RenderPublishInfo();

            EditorGUILayout.Space(10);

            RenderActions();

            EditorGUILayout.EndVertical();

            Validate();
        }

        private async void Validate()
        {
            if (!string.IsNullOrEmpty(_config.accessToken) && _config.accessToken != _lastAccessToken)
            {
                MetacityInterface.client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _config.accessToken);
                bool isValid = await MetacityInterface.CheckAccessToken();
                if (isValid)
                {
                    _isTokenValid = true;
                    _lastAccessToken = _config.accessToken;
                    UpdateConfig();
                }
                else
                {
                    _isTokenValid = false;
                    MetacityInterface.client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", _lastAccessToken);
                }
            }
        }

        private void RenderHelper()
        {
            EditorGUILayout.HelpBox("\n" +
                                    "Publish your cloudrendering build zip to metacity platform.\n" +
                                    "\n"
                , MessageType.Info);
        }

        private void RenderPublishInfo()
        {
            EditorGUILayout.HelpBox("\n" +
                                    "Get your access token from metacity website.\n" +
                                    "\n"
                , MessageType.Warning);

            EditorGUILayout.Space(10);

            _config.accessToken = EditorGUILayout.TextField(new GUIContent("Access Token"), _config.accessToken);
            if (!string.IsNullOrEmpty(_config.accessToken))
            {
                if (_isTokenValid)
                {
                    EditorGUILayout.LabelField("Valid", _passStyle);
                }
                else
                {
                    EditorGUILayout.LabelField(new GUIContent("Invalid access token"), _errorStyle);
                }
            }
            else
            {
                EditorGUILayout.LabelField("Access token can't be null", _errorStyle);
            }
            _config.templateName = EditorGUILayout.TextField(new GUIContent("Template Name"), _config.templateName);
            _config.thumbnail = EditorGUILayout.TextField(new GUIContent("Template Thumbnail"), _config.thumbnail);
            _config.memberLimit =
                EditorGUILayout.IntSlider(new GUIContent("Template Member Limit"), _config.memberLimit, 5, 8);

            EditorGUILayout.Space(10);

            EditorGUILayout.LabelField("Template Description");
            _config.description =
                EditorGUILayout.TextArea(_config.description, EditorStyles.textArea, GUILayout.Height(50));

            EditorGUILayout.Space(10);

            EditorGUILayout.HelpBox("\n" +
                                    "If you need to add/update build content, please export the build file in advance and compress it into zip.\n" +
                                    "\n"
                , MessageType.Warning);
            _config.buildNeeded = EditorGUILayout.Toggle(new GUIContent("create/update Build"), _config.buildNeeded);

            EditorGUI.indentLevel++;
            
            if (_config.buildNeeded)
            {
                EditorGUILayout.Space(10);

                EditorGUILayout.BeginHorizontal();
                _config.clientPath = EditorGUILayout.TextField(new GUIContent("client(zip) path"), _config.clientPath);
                if (GUILayout.Button(new GUIContent("Browser"), GUILayout.Width(80)))
                {
                    _config.clientPath =
                        EditorUtility.OpenFilePanel("select client zip file", Application.dataPath, "zip");
                    EditorUtility.SetDirty(this);
                }

                EditorGUILayout.EndHorizontal();
                
                _config.executableClientPath = EditorGUILayout.TextField(new GUIContent("executable path"), _config.executableClientPath);

                EditorGUILayout.Space(10);

                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField("Server Type");
                _config.serverType = (ServerType) EditorGUILayout.EnumPopup(_config.serverType);
                EditorGUILayout.EndHorizontal();

                EditorGUILayout.Space(10);
                EditorGUI.indentLevel++;
                
                if (_config.serverType == ServerType.Customize)
                {
                    EditorGUILayout.BeginHorizontal();
                    _config.serverPath =
                        EditorGUILayout.TextField(new GUIContent("server(zip) path"), _config.serverPath);
                    if (GUILayout.Button(new GUIContent("Browser"), GUILayout.Width(80)))
                    {
                        _config.serverPath =
                            EditorUtility.OpenFilePanel("select server zip file", Application.dataPath, "zip");
                        EditorUtility.SetDirty(this);
                    }
                    EditorGUILayout.EndHorizontal();
                    
                    _config.executableServerPath = EditorGUILayout.TextField(new GUIContent("executable path"), _config.executableServerPath);
                    
                    EditorGUILayout.Space(10);
                    
                    _portObject.Update();
                    EditorGUI.BeginChangeCheck();
                    EditorGUILayout.PropertyField(_portsProperty, new GUIContent("Game Server Ports"), true);

                    EditorGUILayout.Space(10);
                    
                    EditorGUILayout.PropertyField(_envVerbsProperty, new GUIContent("Environment Variables"), true);
                    if (EditorGUI.EndChangeCheck())
                    {
                        _portObject.ApplyModifiedProperties();
                    }
                }

                EditorGUI.indentLevel--;
                EditorGUILayout.Space(10);

                EditorGUI.indentLevel--;
            }
        }

        private void RenderActions()
        {
            if (_isPublishClick)
            {
                _isPublishClick = false;
                _showProcessBar = true;
                Publish();
            }
            
            if (GUILayout.Button($"Publish"))
            {
                _isPublishClick = true;
                EditorUtility.SetDirty(this);
            }
            
            if (_showProcessBar)
            {
                Repaint();
                if (EditorUtility.DisplayCancelableProgressBar("Upload File to COS", _processNote, _process))
                {
                    _clientRequest?.Cancel();
                    _serverRequest?.Cancel();
                    _uploadTask?.Cancel();
                    CloseProcessBar();
                    Debug.Log("Publish canceled");
                }
            }
        }

        private async void Publish()
        {
            bool firstPublish = false;
            string crUrl = "";
            string uosUrl = "";
            bool isValid = await MetacityInterface.CheckAccessToken();
            if (!isValid)
            {
                _isTokenValid = false;
                EditorUtility.SetDirty(this);
                CloseProcessBar();
                return;
            }
            
            if (string.IsNullOrEmpty(_config.templateId))
            {
                var result = await CreateNewTemplateByConfig(_failedCallBack);
                if(!result) return;
                firstPublish = true;
            }
            else
            {
                var template = await MetacityInterface.GetTemplateById(_config.templateId);
                if (template == null)
                {
                    var result = await CreateNewTemplateByConfig(_failedCallBack);
                    if(!result) return;
                    firstPublish = true;
                }

                var templateResponse = await MetacityInterface.UpdateTemplateById(template, _config.templateId, _config.templateName, _config.description,
                    _config.thumbnail, _config.buildId);
                if (templateResponse == null)
                {
                    CloseProcessBar();
                }
            }
            
            SaveConfig();
            Debug.Log("Template message has been updated.");
            
            if (_config.buildNeeded)
            {
                // BuildByMultipleCatalog.DoBuild();
                // var rootPath = Path.GetDirectoryName(Application.dataPath);
                // var buildPath = Path.Combine(rootPath, BuildByMultipleCatalog.ProjectCacheFolderName);
                // var zipPath = Path.Combine(rootPath, "build.zip");
                // ProcessBuildZip(buildPath, zipPath);
                //
                // this._config.clientPath = zipPath;
                // this._config.executableClientPath = Path.Combine(EditorUserBuildSettings.activeBuildTarget.ToString(),
                //     BuildByMultipleCatalog.ProjectCacheProjectName, BuildByMultipleCatalog.ProjectCacheName);
                // this._config.serverType = ServerType.Official;
                
                if (string.IsNullOrEmpty(_config.buildId))
                {
                    var result = await CreateNewCloudrenderingByConfig(_failedCallBack);
                    if (!result) return;
                }
                else
                {
                    var cr = await MetacityInterface.GetCloudrenderingById(_config.buildId);
                    if (cr == null)
                    {
                        var result = await CreateNewCloudrenderingByConfig(_failedCallBack);
                        if (!result) return;
                    }
                }

                _processNote = "Start upload ...";

                if (!string.IsNullOrEmpty(_config.clientPath))
                {
                    crUrl = await UploadFile(_config.clientPath, _failedCallBack, false);
                    if (string.IsNullOrEmpty(crUrl))
                    {
                        return;
                    }
                }

                if (_config.serverType == ServerType.Customize)
                {
                    uosUrl = await UploadFile(_config.serverPath, _failedCallBack, true);
                    if (string.IsNullOrEmpty(uosUrl))
                    {
                        return;
                    }
                }
                
                _processNote = "Upload Finished";
            
                bool isPublish = await MetacityInterface.PublishPrepare(
                    _config.userId,
                    _config.templateId,
                    _config.buildId,
                    _config.serverType.ToString(),
                    crUrl,
                    _config.executableClientPath,
                    Path.GetFileName(_config.clientPath),
                    clientSize,
                    uosUrl,
                    _config.executableServerPath,
                    _config.environmentVariables,
                    _config.gameServerPorts,
                    firstPublish);
            
                if (isPublish)
                {
                    Debug.Log("Publish successful. Please go to metacity website to continue the follow-up operation");
                }
                else
                {
                    Debug.LogError("Publish Failed");
                }
            }
            
            CloseProcessBar();
        }

        private void CloseProcessBar()
        {
            EditorUtility.ClearProgressBar();
            _showProcessBar = false;
            EditorUtility.SetDirty(this);
        }
        
        private async Task<bool> CreateNewTemplateByConfig(FailedCallBack callBack)
        {
            var template = await MetacityInterface.CreateTemplate(_config.templateName, _config.description, _config.thumbnail);
            if (template == null)
            {
                callBack.Invoke();
                return false;
            }
            
            _config.templateId = template.id;
            _config.templateName = template.name;
            _config.description = template.description;
            _config.thumbnail = template.banner;

            return true;
        }
        
        private async Task<bool> CreateNewCloudrenderingByConfig(FailedCallBack callBack)
        {
            var cr = await MetacityInterface.CreateCloudrendering(_config.templateName, _config.description,
                _config.templateName);

            if (cr == null)
            {
                callBack.Invoke();
                return false;
            }

            _config.buildId = cr.id;
            
            var template = await MetacityInterface.GetTemplateById(_config.templateId);

            if (template == null)
            {
                callBack.Invoke();
                return false;
            }
            
            var templateResponse = await MetacityInterface.UpdateTemplateById(template, _config.templateId, _config.templateName, _config.description,
                _config.thumbnail, _config.buildId);

            if (templateResponse == null)
            {
                callBack.Invoke();
                return false;
            }
            
            return true;
        }

        private async void UpdateConfig()
        {
            _config.userId = await MetacityInterface.GetUserId();
        
            if(string.IsNullOrEmpty(_config.templateId)) return;
            var template = await MetacityInterface.GetTemplateById(_config.templateId);
            _config.templateName = template.name;
            _config.thumbnail = template.banner;
            _config.description = template.description;
        }

        #endregion

        #region process zip
        
        private string ProcessBuildZip(string buildPath, string zipPath)
        {
            if (File.Exists(zipPath))
            {
                File.Delete(zipPath);
            }

            ZipFile.CreateFromDirectory(buildPath, zipPath);

            return zipPath;
        }
        
        #endregion
        
        #region Upload cos

        private long clientSize;
        private long serverSize;

        private async Task<string> UploadFile(string uploadFile, FailedCallBack onFailed, bool isServer)
        {
            if (!File.Exists(uploadFile))
            {
                onFailed.Invoke();
                return null;
            }

            FileInfo fileInfo = new FileInfo(uploadFile);
            if (isServer)
            {
                serverSize = fileInfo.Length;
            }
            else
            {
                clientSize = fileInfo.Length;
            }

            string uploadUrl = await MetacityInterface.GetUploadUrlAsync(fileInfo.Name);
            string downloadUrl = await MetacityInterface.GetDownloadUrlAsync(fileInfo.Name);
            var result = await Task.Run(() => { return UploadFileCos(uploadFile, uploadUrl, isServer); });
            if (!result)
            {
                onFailed.Invoke();
                return null;
            }
            
            return downloadUrl;
        }
        
        bool UploadFileCos(string uploadFile, string requestSignURL, bool isServer)
        {
            if (File.Exists(uploadFile))
            {
                CosXmlConfig config = new CosXmlConfig.Builder()
                    .SetRegion("ap-shanghai")
                    .SetDebugLog(true)
                    .Build();

                var cosXml = new CosXmlServer(config, null);
                try
                {
                    if (isServer)
                    {
                        _serverRequest =  new PutObjectRequest(null, null, uploadFile);
                        _serverRequest.RequestURLWithSign = requestSignURL;
                        _serverRequest.SetCosProgressCallback(delegate(long completed, long total)
                        {
                            _process = (float)completed / total;
                            _processNote = string.Format("uploaded {0} of {1} bytes. {2:##.##} % complete...",
                                completed,
                                serverSize,
                                completed * 100.0/ serverSize);
                        });
                        PutObjectResult result = cosXml.PutObject(_serverRequest);
                        Debug.LogFormat(result.GetResultInfo());
                        return result.IsSuccessful();
                    }
                    else
                    {
                        _clientRequest = new PutObjectRequest(null, null, uploadFile);
                        _clientRequest.RequestURLWithSign = requestSignURL;
                        _clientRequest.SetCosProgressCallback(delegate(long completed, long total)
                        {
                            _process = (float)completed / total;
                            _processNote = string.Format("uploaded {0} of {1} bytes. {2:##.##} % complete...",
                                completed,
                                clientSize,
                                completed * 100.0/ clientSize);
                        });
                        PutObjectResult result = cosXml.PutObject(_clientRequest);
                        
                        Debug.LogFormat(result.GetResultInfo());
                        return result.IsSuccessful();
                    }
                }
                catch (COSXML.CosException.CosClientException clientEx)
                {
                    Debug.LogException(clientEx);
                }
                catch (COSXML.CosException.CosServerException serverEx)
                {
                    Debug.LogException(serverEx);
                }
            }

            return false;
        }

        #endregion
    }
}