using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using UnityEditor;
using UnityEngine;
using System.Threading.Tasks;
using System.Net.Http.Headers;
using System.Text;
using COSXML;
using COSXML.Model.Object;
using COSXML.Transfer;
using MetaCity.BundleKit.Editor.Utils;
using Newtonsoft.Json;

namespace MetaCity.BundleKit.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 FailedCallBack _failedCallBack;

        private Config _config = new Config();
        private SerializedObject _portObject;
        private SerializedProperty _portsProperty;
        private SerializedProperty _envVerbsProperty;

        private float _process = 0;
        private string _processNote = "";
        private bool _showProcessBar = false;

        private bool _isPublishClick = false;
        private PutObjectRequest _request;
        private COSXMLUploadTask _uploadTask;

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

            _isPublishClick = false;
            
            LoadConfig();
        }

        protected void OnDestroy() {
        
            SaveConfig();
        }

        private void LoadConfig()
        {
            if (!Directory.Exists(Constants.TokenConfigPath))
            {
                Directory.CreateDirectory(Constants.TokenConfigPath);
            }
            var path=Path.Combine(Constants.TokenConfigPath,"config.json");
            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;
            }
            else
            {
                Debug.LogError("failed to deserialize config data");
            }
        }

        private void SaveConfig()
        {
            if (!Directory.Exists(Constants.TokenConfigPath))
            {
                Directory.CreateDirectory(Constants.TokenConfigPath);
            }
            var path=Path.Combine(Constants.TokenConfigPath,"config.json");
            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
        
        protected virtual void OnGUI()
        {
            EditorGUILayout.BeginVertical();

            // RenderHelper();
            //
            // EditorGUILayout.Space(10);
            //
            // RenderPublishInfo();
            //
            // EditorGUILayout.Space(10);

            RenderActions();

            EditorGUILayout.EndVertical();
        }

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

        private void RenderPublishInfo()
        {
            _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++;
        }

        private void RenderActions()
        {
            MetacityTokenWindow.Validate();
            if (_isPublishClick)
            {
                _isPublishClick = false;
                _showProcessBar = true;
                Publish();
            }
            
            if (MetacityTokenWindow.IsAccessTokenValid)
            {
                if (GUILayout.Button($"Publish"))
                {
                    _isPublishClick = true;
                    EditorUtility.SetDirty(this);
                }
            }
            else
            {
                EditorGUILayout.HelpBox("\n" +
                        "Your access token is invalid. \n" + 
                        "Please update your access token.\n" +
                        "\n", MessageType.Warning);
                if (GUILayout.Button("Update Access Token"))
                {
                    MetacityTokenWindow.OpenTokenWindow();
                }
            }
            
            if (_showProcessBar)
            {
                Repaint();
                if (EditorUtility.DisplayCancelableProgressBar("Upload File to COS", _processNote, _process))
                {
                    _request?.Cancel();
                    _uploadTask?.Cancel();
                    CloseProcessBar();
                    Debug.Log("Publish canceled");
                }
            }
        }

        private async void Publish()
        {
            bool isValid = await MetacityClient.CheckAccessToken();
            if (!isValid)
            {
                EditorUtility.SetDirty(this);
                CloseProcessBar();
                return;
            }
            
            if (string.IsNullOrEmpty(_config.templateId))
            {
                var result = await CreateNewTemplateByConfig(_failedCallBack);
                if(!result) return;
            }
            else
            {
                var template = await MetacityClient.GetTemplateById(_config.templateId);
                if (template == null)
                {
                    var result = await CreateNewTemplateByConfig(_failedCallBack);
                    if(!result) return;
                }

                var templateResponse = await MetacityClient.UpdateTemplateById(template, _config.templateId, _config.templateName, _config.description,
                    _config.thumbnail, _config.buildId);
                if (templateResponse == null)
                {
                    CloseProcessBar();
                }
            }
            
            SaveConfig();
            Debug.Log("Template info has been updated.");
            
            if (_config.buildNeeded)
            {
                var bundles = BuildEntry.LoadLastBuiltCatalog();
                _config.assetBundles.Clear();
                for (int i = 0; i < bundles.Count; i++)
                {
                    _config.assetBundles.Add(new AssetBundle()
                    {
                        bundlePath = bundles[i].bundleLocalPath,
                        bundleName = bundles[i].bundleName,
                        bundleType = bundles[i].bundleType,
                        bundleHash = bundles[i].bundleHash,
                        bundleDependencies = bundles[i].bundleDependencies,
                        platform = bundles[i].bundlePlatform
                    });
                }

                if (string.IsNullOrEmpty(_config.buildId))
                {
                    var result = await CreateNewCloudrenderingByConfig(_failedCallBack);
                    if (!result) return;
                }
                else
                {
                    var cr = await MetacityClient.GetCloudrenderingById(_config.buildId);
                    if (cr == null)
                    {
                        var result = await CreateNewCloudrenderingByConfig(_failedCallBack);
                        if (!result) return;
                    }
                }

                _processNote = "Start upload ...";
                
                var isSuccess = await UploadBundles(_config.assetBundles, _failedCallBack);
                if (!isSuccess)
                {
                    return;
                }
                
                bool isPublish = await MetacityClient.Publish(
                    _config.templateId,
                    _config.buildId,
                    _config.serverType.ToString(),
                    _config.assetBundles
                );
                
                if (isPublish)
                {
                    Debug.Log("Publish successful.");
                }
                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 MetacityClient.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 MetacityClient.CreateCloudrendering(_config.templateName, _config.description,
                _config.templateName);

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

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

            if (template == null)
            {
                callBack.Invoke();
                return false;
            }
            
            var templateResponse = await MetacityClient.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 MetacityClient.GetUserId();
        
            if(string.IsNullOrEmpty(_config.templateId)) return;
            var template = await MetacityClient.GetTemplateById(_config.templateId);
            _config.templateName = template.name;
            _config.thumbnail = template.banner;
            _config.description = template.description;

            var assetBundles = await MetacityClient.GetAssetBundleByTemplateId(_config.templateId);
            if (assetBundles.Count > 0)
            {
                _config.assetBundles.Clear();
                foreach (var ab in assetBundles)
                {
                    AssetBundle assetBundle = new AssetBundle()
                    {
                        bundleName = ab.bundleName,
                        bundlePath = ab.bundlePath,
                        bundleType = ab.bundleType,
                        bundleHash = ab.bundleHash,
                        bundleDependencies = ab.bundleDependencies,
                        platform = ab.platform,
                        extraInfo = ab.extraInfo
                    };
                    _config.assetBundles.Add(assetBundle);
                }
            }
                
        }
        
        #endregion
        
        #region Upload cos
        
        private async Task<bool> UploadBundles(List<AssetBundle> assetBundles, FailedCallBack onFailed)
        {
            CosXmlConfig config = new CosXmlConfig.Builder()
                .SetRegion("ap-shanghai")
                .SetDebugLog(true)
                .Build();
            var cosXml = new CosXmlServer(config, null);

            int totalCount = assetBundles.Count;
            int count = 1;
            
            foreach (var assetBundle in assetBundles)
            {
                if (!File.Exists(assetBundle.bundlePath))
                {
                    onFailed.Invoke();
                    return false;
                }
                
                try
                {
                    
                    var cosPath = $"{assetBundle.bundleName}-{assetBundle.bundleHash}";
                    string requestSignURL = await MetacityClient.GetUploadUrlAsync(cosPath);
                    _request = new PutObjectRequest(null, null, assetBundle.bundlePath);
                    _request.RequestURLWithSign = requestSignURL;
                    _request.SetCosProgressCallback(delegate(long completed, long total)
                    {
                        _process = (float) completed / total;
                        _processNote = string.Format("Upload({0}/{1})\n" +
                                                     "uploaded {2} of {3} bytes. {4:##.##} % complete...",
                            count,
                            totalCount,
                            completed,
                            total,
                            completed * 100.0 / total);
                    });
                    PutObjectResult result = cosXml.PutObject(_request);

                    if (result.IsSuccessful())
                    {
                        count++;
                    }
                    else
                    {
                        return false;
                    }
                }
                catch (COSXML.CosException.CosClientException clientEx)
                {
                    Debug.LogException(clientEx);
                }
                catch (COSXML.CosException.CosServerException serverEx)
                {
                    Debug.LogException(serverEx);
                }
            }

            return true;
        }
        
        #endregion

        private async Task<bool> PublishAssetBundles(List<AssetBundle> assetBundles)
        {
            bool upload = await UploadBundles(assetBundles, _failedCallBack);
            if (upload)
            {
                return await MetacityClient.PublishAssetBundles(assetBundles);
            }

            return false;
        }
    }
}