using System.Collections.Generic;
using System.Xml;
using System.Xml.Linq;

public static class CustomGameOptions
{
    private static string SaveDataPath = "";
    private static string ModPath = "";
    private static string GameOptionsFilename = "CustomGameOptions.xml";
    public static bool ReloadUI = false;
    public static Dictionary<string, string> StoredOptions;

    static CustomGameOptions()
    {
        //Log.Out("CustomGameOptions-CustomGameOptions START"); 
        StoredOptions = new Dictionary<string, string>();
        var mod = ModManager.GetMod("zzz_REBIRTH__Utils", true);
        ModPath = mod.Path;
        SaveDataPath = GameIO.GetUserGameDataDir() + "/RebirthData";
        Directory.CreateDirectory(SaveDataPath);
        //Log.Out("DataConfigPath = " + SaveDataPath);
    }

    public static void CheckConfigs()
    {
        //Log.Out("CustomGameOptions-CheckConfigs START");
        if (GameManager.IsDedicatedServer)
        {
            string path = SaveDataPath + "/" + GameOptionsFilename;
            //Log.Out("CustomGameOptions-CheckConfigs IS DEDICATED");
            if (!File.Exists(path))
            {
                //Log.Out("CustomGameOptions-CheckConfigs FILE DOES NOT EXIST");
                LoadDefaultGameOptions();
                SaveGameOptions();
            }
        }
    }

    public static void LoadConfigs(XmlFile xmlFile)
    {
        //Log.Out("CustomGameOptions-LoadConfigs START");
        LoadGameOptions(xmlFile);
        //Log.Out("Custom Game Options Loaded.");
        RebirthVariables.setConfigVariables();
        RebirthVariables.randomWeaponInitiated = false;
    }

    public static void LoadDefaultGameOptions()
    {
        var path = ModPath + "/Config/XUi_Menu/";
        if (File.Exists(path + "windows.xml"))
        {
            XDocument xWindows = SdXDocument.Load(path + "windows.xml");

            if (xWindows.Root == null)
            {
                throw new Exception("Invalid CustomGameOptions file: " + path);
            }

            foreach (XElement xmlElement in xWindows.Descendants("gameoption"))
            {
                var value = xmlElement.GetAttribute("default_value");
                var name = xmlElement.GetAttribute("name");

                StoredOptions[name] = value;
            }
        }

        //Log.Out("Custom Game Options Default Values Loaded.");
    }

    public static void LoadGameOptions(XmlFile xmlFile, bool isContinueGame = false)
    {
        //Log.Out("CustomGameOptions-LoadGameOptions START");
        //Log.Out("CustomGameOptions-LoadGameOptions isContinueGame: " + isContinueGame);

        //string savePath = $"{SaveDataPath}/CustomGameOptions/{GamePrefs.GetString(EnumGamePrefs.GameWorld)}/{GamePrefs.GetString(EnumGamePrefs.GameName)}";
        string savePath = $"{SaveDataPath}";
        //Log.Out("CustomGameOptions-LoadGameOptions savePath: " + savePath);

        if (GameManager.IsDedicatedServer)
        {
            LoadDefaultGameOptions();
        }

        XDocument xdocument = new XDocument();
        if (xmlFile == null)
        {
            //Log.Out("CustomGameOptions-LoadGameOptions LOCAL");
            if (!string.IsNullOrEmpty(savePath))
            {
                string path = savePath + "/" + GameOptionsFilename;
                //Log.Out("CustomGameOptions-LoadGameOptions PATH EXISTS, SaveDataPath: " + SaveDataPath);
                if (File.Exists(path))
                {
                    //Log.Out("CustomGameOptions-LoadGameOptions FILE EXISTS A");
                    xdocument = SdXDocument.Load(path);
                }
                else
                {
                    //Log.Out("CustomGameOptions-LoadGameOptions FILE DOES NOT EXIST, path: " + path);
                    string oldPath = ModPath + "/CustomGameOptions" + "/" + GameOptionsFilename;
                    //Log.Out("CustomGameOptions-LoadGameOptions old path: " + oldPath);
                    if (File.Exists(oldPath))
                    {
                        //Log.Out("CustomGameOptions-LoadGameOptions FILE EXISTS B");
                        xdocument = SdXDocument.Load(oldPath);
                    }
                    else
                    {
                        //Log.Out("CustomGameOptions-LoadGameOptions FILE DOES NOT EXIST B");
                        LoadDefaultGameOptions();
                        SaveGameOptions();
                        xdocument = SdXDocument.Load(path);
                    }
                }
            }
        }
        else
        {
            //Log.Out("CustomGameOptions-LoadGameOptions xmlFile");
            xdocument = xmlFile.XmlDoc;
        }

        if (xdocument.Root == null)
        {
            throw new Exception("Invalid CustomGameOptions file");
        }

        foreach (XElement xmlElement in xdocument.Root.Elements())
        {
            if (xmlElement.Name == "config")
            {
                if (!xmlElement.HasAttribute("name"))
                {
                    throw new Exception("Attribute 'name' missing on item");
                }
                if (!xmlElement.HasAttribute("value"))
                {
                    throw new Exception("Attribute 'value' missing on item");
                }

                var value = xmlElement.GetAttribute("value");
                var name = xmlElement.GetAttribute("name");

                StoredOptions[name] = value;
                Log.Out($"CustomGameOption {name}: {value}");
            }
        }

        if (GameManager.IsDedicatedServer)
        {
            SaveGameOptions();
        }
    }

    public static void SaveGameOptions()
    {
        //Log.Out("CustomGameOptions-SaveGameOptions START");
        XmlDocument xmlDocument = new XmlDocument();
        XmlDeclaration newChild = xmlDocument.CreateXmlDeclaration("1.0", "UTF-8", null);
        xmlDocument.InsertBefore(newChild, xmlDocument.DocumentElement);
        XmlNode parent = xmlDocument.AppendChild(xmlDocument.CreateElement("customgameoptions"));

        foreach (var key in StoredOptions.Keys)
        {
            parent.AppendChild(CreateXMLGameOptionChild(xmlDocument, key, StoredOptions[key].ToString()));
        }

        //Log.Out(SerializeToString(xmlDocument));

        // Make sure folder is there before saving
        string savePath = $"{SaveDataPath}/CustomGameOptions/{GamePrefs.GetString(EnumGamePrefs.GameWorld)}/{GamePrefs.GetString(EnumGamePrefs.GameName)}";
        //Log.Out("CustomGameOptions-SaveGameOptions savePath: " + savePath);
        //Directory.CreateDirectory(savePath);

        Directory.CreateDirectory(SaveDataPath);
        //var path = savePath + "/" + GameOptionsFilename;
        //File.WriteAllText(path, SerializeToString(xmlDocument), Encoding.UTF8);
        // Write a copy to the root of the RebirthData folder

        XmlWriterSettings settings = new XmlWriterSettings
        {
            Indent = true,                 // Enable indentation
            IndentChars = "    ",          // Use 4 spaces for indentation (you can adjust this as needed)
            NewLineOnAttributes = false    // Optionally place attributes on new lines
        };

        string path = SaveDataPath + "/" + GameOptionsFilename;

        // Write the formatted XML to file
        using (XmlWriter writer = XmlWriter.Create(path, settings))
        {
            xmlDocument.Save(writer);
        }
        //File.WriteAllText(path, SerializeToString(xmlDocument), Encoding.UTF8);
    }

    private static XmlElement CreateXMLGameOptionChild(XmlDocument xmlDocument, string name, string value)
    {
        XmlElement xmlElement = xmlDocument.CreateElement("config");
        XmlAttribute xmlAttributeName = xmlDocument.CreateAttribute("name");
        xmlAttributeName.Value = name;
        xmlElement.Attributes.Append(xmlAttributeName);
        XmlAttribute xmlAttributeValue = xmlDocument.CreateAttribute("value");
        xmlAttributeValue.Value = value.ToLower();
        xmlElement.Attributes.Append(xmlAttributeValue);

        return xmlElement;
    }

    private static string SerializeToString(XmlDocument xmlDocument)
    {
        string result;
        using (StringWriter stringWriter = new StringWriter())
        {
            using (XmlTextWriter xmlTextWriter = new XmlTextWriter(stringWriter))
            {
                xmlDocument.WriteTo(xmlTextWriter);
                result = stringWriter.ToString();
            }
        }
        return result;
    }

    public static bool HasValue(string name)
    {
        return StoredOptions.ContainsKey(name);
    }

    public static void SetValue(string name, object value)
    {
        //Log.Out("CustomGameOptions-SetValue NEW VALUE StoredOptions[" + name + "]: " + value);
        StoredOptions[name] = value.ToString();
        //Log.Out("CustomGameOptions-SetValue SET VALUE StoredOptions[" + name + "]: " + StoredOptions[name]);
    }

    public static int GetInt(string name, int defaultValue = 0)
    {
        if (!StoredOptions.ContainsKey(name))
        {
            return defaultValue;
        }

        return int.TryParse(StoredOptions[name], out var output) ? output : defaultValue;
    }

    public static string GetString(string name, string defaultValue = "")
    {
        if (!StoredOptions.ContainsKey(name))
        {
            return defaultValue;
        }

        //Log.Out("StoredOptions[" + name + "].ToString(): " + StoredOptions[name].ToString());
        //Log.Out("LOCALIZED StoredOptions[" + name + "].ToString(): " + Localization.Get(StoredOptions[name].ToString()));
        return StoredOptions[name].ToString();
    }

    public static bool GetBool(string name, bool defaultValue = false)
    {
        if (!StoredOptions.ContainsKey(name))
        {
            return defaultValue;
        }

        return bool.TryParse(StoredOptions[name], out var output) ? output : defaultValue;
    }
}