/*	EQEmu: EQEmulator

	Copyright (C) 2001-2026 EQEmu Development Team

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "eqemu_config.h"

#include "common/eqemu_logsys.h"
#include "common/json/json.hpp"
#include "common/misc_functions.h"
#include "common/strings.h"

#include <filesystem>
#include <iostream>
#include <sstream>

std::string EQEmuConfig::ConfigFile = "eqemu_config.json";
EQEmuConfig *EQEmuConfig::_config = nullptr;

void EQEmuConfig::parse_config()
{

	ShortName    = _root["server"]["world"].get("shortname", "").asString();
	LongName     = _root["server"]["world"].get("longname", "").asString();
	WorldAddress = _root["server"]["world"].get("address", "").asString();
	LocalAddress = _root["server"]["world"].get("localaddress", "").asString();
	MaxClients   = Strings::ToInt(_root["server"]["world"].get("maxclients", "-1").asString());
	SharedKey    = _root["server"]["world"].get("key", "").asString();
	LoginCount   = 0;

	if (_root["server"]["world"]["loginserver"].isObject()) {
		LoginHost   = _root["server"]["world"]["loginserver"].get("host", "login.eqemulator.net").asString();
		LoginPort   = Strings::ToUnsignedInt(_root["server"]["world"]["loginserver"].get("port", "5998").asString());
		LoginLegacy = false;
		if (_root["server"]["world"]["loginserver"].get("legacy", "0").asString() == "1") { LoginLegacy = true; }
		LoginAccount  = _root["server"]["world"]["loginserver"].get("account", "").asString();
		LoginPassword = _root["server"]["world"]["loginserver"].get("password", "").asString();

		// at least today, this is wrong a majority of the time
		// remove this if eqemulator ever upgrades its loginserver
		if (LoginHost.find("login.eqemulator.net") != std::string::npos) {
			LoginLegacy = true;
		}
	}
	else {
		char str[32];
		loginlist.Clear();
		do {
			sprintf(str, "loginserver%i", ++LoginCount);
			if (!_root["server"]["world"][str].isObject()) {
				break;
			}

			auto loginconfig = new LoginConfig;
			loginconfig->LoginHost     = _root["server"]["world"][str].get("host", "login.eqemulator.net").asString();
			loginconfig->LoginPort     = Strings::ToUnsignedInt(_root["server"]["world"][str].get("port", "5998").asString());
			loginconfig->LoginAccount  = _root["server"]["world"][str].get("account", "").asString();
			loginconfig->LoginPassword = _root["server"]["world"][str].get("password", "").asString();

			loginconfig->LoginLegacy = false;
			if (_root["server"]["world"][str].get("legacy", "0").asString() == "1") { loginconfig->LoginLegacy = true; }

			// at least today, this is wrong a majority of the time
			// remove this if eqemulator ever upgrades its loginserver
			if (loginconfig->LoginHost.find("login.eqemulator.net") != std::string::npos) {
				loginconfig->LoginLegacy = true;
			}

			loginlist.Insert(loginconfig);
		} while (LoginCount < 100);
	}


	//<locked> from xml converts to json as locked: "", so i default to "false".
	//The only way to enable locked is by switching to true, meaning this value is always false until manually set true
	Locked = false;
	if (_root["server"]["world"].get("locked", "false").asString() == "true") { Locked = true; }

	auto_database_updates = false;
	if (_root["server"].get("auto_database_updates", "true").asString() == "true") {
		auto_database_updates = true;
	}

	WorldIP      = _root["server"]["world"]["tcp"].get("ip", "127.0.0.1").asString();
	WorldTCPPort = Strings::ToUnsignedInt(_root["server"]["world"]["tcp"].get("port", "9000").asString());

	TelnetIP      = _root["server"]["world"]["telnet"].get("ip", "127.0.0.1").asString();
	TelnetTCPPort = Strings::ToUnsignedInt(_root["server"]["world"]["telnet"].get("port", "9001").asString());
	TelnetEnabled = false;
	if (_root["server"]["world"]["telnet"].get("enabled", "false").asString() == "true") { TelnetEnabled = true; }

	WorldHTTPMimeFile = _root["server"]["world"]["http"].get("mimefile", "mime.types").asString();
	WorldHTTPPort     = Strings::ToUnsignedInt(_root["server"]["world"]["http"].get("port", "9080").asString());
	WorldHTTPEnabled  = false;

	if (_root["server"]["world"]["http"].get("enabled", "false").asString() == "true") {
		WorldHTTPEnabled = true;
	}

	if (_root["server"].get("disable_config_checks", "false").asString() == "true") {
		DisableConfigChecks = true;
	}



	CheckUcsConfigConversion();

	m_ucs_host = _root["server"]["ucs"].get("host", "eqchat.eqemulator.net").asString();
	m_ucs_port = Strings::ToUnsignedInt(_root["server"]["ucs"].get("port", "7778").asString());

	/**
	 * Database
	 */
	DatabaseUsername = _root["server"]["database"].get("username", "eq").asString();
	DatabasePassword = _root["server"]["database"].get("password", "eq").asString();
	DatabaseHost     = _root["server"]["database"].get("host", "localhost").asString();
	DatabasePort     = Strings::ToUnsignedInt(_root["server"]["database"].get("port", "3306").asString());
	DatabaseDB       = _root["server"]["database"].get("db", "eq").asString();

	/**
	 * Content Database
	 */
	ContentDbUsername = _root["server"]["content_database"].get("username", "").asString();
	ContentDbPassword = _root["server"]["content_database"].get("password", "").asString();
	ContentDbHost     = _root["server"]["content_database"].get("host", "").asString();
	ContentDbPort     = Strings::ToUnsignedInt(_root["server"]["content_database"].get("port", 0).asString());
	ContentDbName     = _root["server"]["content_database"].get("db", "").asString();

	/**
	 * QS
	 */
	QSDatabaseHost     = _root["server"]["qsdatabase"].get("host", "localhost").asString();
	QSDatabasePort     = Strings::ToUnsignedInt(_root["server"]["qsdatabase"].get("port", "3306").asString());
	QSDatabaseUsername = _root["server"]["qsdatabase"].get("username", "eq").asString();
	QSDatabasePassword = _root["server"]["qsdatabase"].get("password", "eq").asString();
	QSDatabaseDB       = _root["server"]["qsdatabase"].get("db", "eq").asString();
	QSHost             = _root["server"]["queryserver"].get("host", "localhost").asString();
	QSPort             = Strings::ToUnsignedInt(_root["server"]["queryserver"].get("port", "9500").asString());

	/**
	 * Zones
	 */
	DefaultStatus = Strings::ToUnsignedInt(_root["server"]["zones"].get("defaultstatus", 0).asString());
	ZonePortLow   = Strings::ToUnsignedInt(_root["server"]["zones"]["ports"].get("low", "7000").asString());
	ZonePortHigh  = Strings::ToUnsignedInt(_root["server"]["zones"]["ports"].get("high", "7999").asString());

	/**
	 * Files
	 */
	SpellsFile      = _root["server"]["files"].get("spells", "spells_us.txt").asString();
	OpCodesFile     = _root["server"]["files"].get("opcodes", "opcodes.conf").asString();
	MailOpCodesFile = _root["server"]["files"].get("mail_opcodes", "mail_opcodes.conf").asString();
	PluginPlFile    = _root["server"]["files"].get("plugin.pl", "plugin.pl").asString();

	/**
	 * Directories
	 */
	MapDir       = _root["server"]["directories"].get("maps", "Maps/").asString();
	QuestDir     = _root["server"]["directories"].get("quests", "quests/").asString();
	PluginDir    = _root["server"]["directories"].get("plugins", "plugins/").asString();
	LuaModuleDir = _root["server"]["directories"].get("lua_modules", "lua_modules/").asString();
	PatchDir     = _root["server"]["directories"].get("patches", "./").asString();
	OpcodeDir    = _root["server"]["directories"].get("opcodes", "./").asString();
	SharedMemDir = _root["server"]["directories"].get("shared_memory", "shared/").asString();
	LogDir       = _root["server"]["directories"].get("logs", "logs/").asString();

	auto load_paths = [&](const std::string& key, std::vector<std::string>& target) {
		const auto& paths = _root["server"]["directories"][key];
		if (paths.isArray()) {
			for (const auto& dir : paths) {
				if (dir.isString()) {
					target.push_back(dir.asString());
				}
			}
		}
	};

	load_paths("quest_paths", m_quest_directories);
	load_paths("plugin_paths", m_plugin_directories);
	load_paths("lua_module_paths", m_lua_module_directories);

	/**
	 * Logs
	 */
	LogPrefix = _root["server"]["launcher"].get("logprefix", "logs/zone-").asString();
	LogSuffix = _root["server"]["launcher"].get("logsuffix", ".log").asString();

	/**
	 * Launcher
	 */
	RestartWait      = Strings::ToInt(_root["server"]["launcher"]["timers"].get("restart", "10000").asString());
	TerminateWait    = Strings::ToInt(_root["server"]["launcher"]["timers"].get("reterminate", "10000").asString());
	InitialBootWait  = Strings::ToInt(_root["server"]["launcher"]["timers"].get("initial", "20000").asString());
	ZoneBootInterval = Strings::ToInt(_root["server"]["launcher"]["timers"].get("interval", "2000").asString());
#ifdef WIN32
	ZoneExe = _root["server"]["launcher"].get("exe", "zone.exe").asString();
#else
	ZoneExe = _root["server"]["launcher"].get("exe", "./zone").asString();
#endif

}
std::string EQEmuConfig::GetByName(const std::string &var_name) const
{
	if (var_name == "ShortName") {
		return (ShortName);
	}
	if (var_name == "LongName") {
		return (LongName);
	}
	if (var_name == "WorldAddress") {
		return (WorldAddress);
	}
	if (var_name == "LoginHost") {
		return (LoginHost);
	}
	if (var_name == "LoginAccount") {
		return (LoginAccount);
	}
	if (var_name == "LoginPassword") {
		return (LoginPassword);
	}
	if (var_name == "LoginPort") {
		return (itoa(LoginPort));
	}
	if (var_name == "LoginLegacy") {
		return (itoa(LoginLegacy ? 1 : 0));
	}
	if (var_name == "Locked") {
		return (Locked ? "true" : "false");
	}
	if (var_name == "WorldTCPPort") {
		return (itoa(WorldTCPPort));
	}
	if (var_name == "WorldIP") {
		return (WorldIP);
	}
	if (var_name == "TelnetTCPPort") {
		return (itoa(TelnetTCPPort));
	}
	if (var_name == "TelnetIP") {
		return (TelnetIP);
	}
	if (var_name == "TelnetEnabled") {
		return (TelnetEnabled ? "true" : "false");
	}
	if (var_name == "WorldHTTPPort") {
		return (itoa(WorldHTTPPort));
	}
	if (var_name == "WorldHTTPMimeFile") {
		return (WorldHTTPMimeFile);
	}
	if (var_name == "WorldHTTPEnabled") {
		return (WorldHTTPEnabled ? "true" : "false");
	}
	if (var_name == "ChatHost") {
		return (m_ucs_host);
	}
	if (var_name == "ChatPort") {
		return (itoa(m_ucs_port));
	}
	if (var_name == "MailHost") {
		return (m_ucs_host);
	}
	if (var_name == "MailPort") {
		return (itoa(m_ucs_port));
	}
	if (var_name == "DatabaseHost") {
		return (DatabaseHost);
	}
	if (var_name == "DatabaseUsername") {
		return (DatabaseUsername);
	}
	if (var_name == "DatabasePassword") {
		return (DatabasePassword);
	}
	if (var_name == "DatabaseDB") {
		return (DatabaseDB);
	}
	if (var_name == "DatabasePort") {
		return (itoa(DatabasePort));
	}
	if (var_name == "QSDatabaseHost") {
		return (QSDatabaseHost);
	}
	if (var_name == "QSDatabaseUsername") {
		return (QSDatabaseUsername);
	}
	if (var_name == "QSDatabasePassword") {
		return (QSDatabasePassword);
	}
	if (var_name == "QSDatabaseDB") {
		return (QSDatabaseDB);
	}
	if (var_name == "QSDatabasePort") {
		return (itoa(QSDatabasePort));
	}
	if (var_name == "SpellsFile") {
		return (SpellsFile);
	}
	if (var_name == "OpCodesFile") {
		return (OpCodesFile);
	}
	if (var_name == "MailOpCodesFile") {
		return (MailOpCodesFile);
	}
	if (var_name == "PluginPlFile") {
		return (PluginPlFile);
	}
	if (var_name == "MapDir") {
		return (MapDir);
	}
	if (var_name == "QuestDir") {
		return (QuestDir);
	}
	if (var_name == "PluginDir") {
		return (PluginDir);
	}
	if (var_name == "LuaModuleDir") {
		return (LuaModuleDir);
	}
	if (var_name == "PatchDir") {
		return (PatchDir);
	}
	if (var_name == "SharedMemDir") {
		return (SharedMemDir);
	}
	if (var_name == "LogDir") {
		return (LogDir);
	}
	if (var_name == "LogPrefix") {
		return (LogPrefix);
	}
	if (var_name == "LogSuffix") {
		return (LogSuffix);
	}
	if (var_name == "ZoneExe") {
		return (ZoneExe);
	}
	if (var_name == "ZonePortLow") {
		return (itoa(ZonePortLow));
	}
	if (var_name == "ZonePortHigh") {
		return (itoa(ZonePortHigh));
	}
	if (var_name == "DefaultStatus") {
		return (itoa(DefaultStatus));
	}
//	if(var_name == "DynamicCount")
//		return(itoa(DynamicCount));
	return ("");
}

void EQEmuConfig::Dump() const
{
	std::cout << "ShortName = " << ShortName << std::endl;
	std::cout << "LongName = " << LongName << std::endl;
	std::cout << "WorldAddress = " << WorldAddress << std::endl;
	std::cout << "LoginHost = " << LoginHost << std::endl;
	std::cout << "LoginAccount = " << LoginAccount << std::endl;
	std::cout << "LoginPassword = " << LoginPassword << std::endl;
	std::cout << "LoginPort = " << LoginPort << std::endl;
	std::cout << "LoginLegacy = " << LoginLegacy << std::endl;
	std::cout << "Locked = " << Locked << std::endl;
	std::cout << "WorldTCPPort = " << WorldTCPPort << std::endl;
	std::cout << "WorldIP = " << WorldIP << std::endl;
	std::cout << "TelnetTCPPort = " << TelnetTCPPort << std::endl;
	std::cout << "TelnetIP = " << TelnetIP << std::endl;
	std::cout << "TelnetEnabled = " << TelnetEnabled << std::endl;
	std::cout << "WorldHTTPPort = " << WorldHTTPPort << std::endl;
	std::cout << "WorldHTTPMimeFile = " << WorldHTTPMimeFile << std::endl;
	std::cout << "WorldHTTPEnabled = " << WorldHTTPEnabled << std::endl;
	std::cout << "UCSHost = " << m_ucs_host << std::endl;
	std::cout << "UCSPort = " << m_ucs_port << std::endl;
	std::cout << "DatabaseHost = " << DatabaseHost << std::endl;
	std::cout << "DatabaseUsername = " << DatabaseUsername << std::endl;
	std::cout << "DatabasePassword = " << DatabasePassword << std::endl;
	std::cout << "DatabaseDB = " << DatabaseDB << std::endl;
	std::cout << "DatabasePort = " << DatabasePort << std::endl;
	std::cout << "QSDatabaseHost = " << QSDatabaseHost << std::endl;
	std::cout << "QSDatabaseUsername = " << QSDatabaseUsername << std::endl;
	std::cout << "QSDatabasePassword = " << QSDatabasePassword << std::endl;
	std::cout << "QSDatabaseDB = " << QSDatabaseDB << std::endl;
	std::cout << "QSDatabasePort = " << QSDatabasePort << std::endl;
	std::cout << "SpellsFile = " << SpellsFile << std::endl;
	std::cout << "OpCodesFile = " << OpCodesFile << std::endl;
	std::cout << "MailOpcodesFile = " << MailOpCodesFile << std::endl;
	std::cout << "PluginPlFile = " << PluginPlFile << std::endl;
	std::cout << "MapDir = " << MapDir << std::endl;
	std::cout << "QuestDir = " << QuestDir << std::endl;
	std::cout << "PluginDir = " << PluginDir << std::endl;
	std::cout << "LuaModuleDir = " << LuaModuleDir << std::endl;
	std::cout << "PatchDir = " << PatchDir << std::endl;
	std::cout << "SharedMemDir = " << SharedMemDir << std::endl;
	std::cout << "LogDir = " << LogDir << std::endl;
	std::cout << "ZonePortLow = " << ZonePortLow << std::endl;
	std::cout << "ZonePortHigh = " << ZonePortHigh << std::endl;
	std::cout << "DefaultStatus = " << (int) DefaultStatus << std::endl;
//	std::cout << "DynamicCount = " << DynamicCount << std::endl;
}

const std::string &EQEmuConfig::GetUCSHost() const
{
	return m_ucs_host;
}

uint16 EQEmuConfig::GetUCSPort() const
{
	return m_ucs_port;
}

void EQEmuConfig::CheckUcsConfigConversion()
{
	std::string chat_host = _root["server"]["chatserver"].get("host", "").asString();
	uint32      chat_port = Strings::ToUnsignedInt(_root["server"]["chatserver"].get("port", "0").asString());
	std::string mail_host = _root["server"]["mailserver"].get("host", "").asString();
	uint32      mail_port = Strings::ToUnsignedInt(_root["server"]["mailserver"].get("port", "0").asString());
	std::string ucs_host  = _root["server"]["ucs"].get("host", "").asString();

	// automatic ucs legacy configuration migration
	// if old configuration values are set, let's backup the existing configuration
	// and migrate to to use the new fields and write the new config
	if ((!chat_host.empty() || !mail_host.empty()) && ucs_host.empty()) {
		LogInfo("Migrating old [eqemu_config] UCS configuration to new configuration");

		std::string config_file_path = std::filesystem::path{
			PathManager::Instance()->GetServerPath() + "/eqemu_config.json"
		}.string();

		std::string config_file_bak_path = std::filesystem::path{
			PathManager::Instance()->GetServerPath() + "/eqemu_config.ucs-migrate-json.bak"
		}.string();

		// copy eqemu_config.json to eqemu_config.json.bak
		std::ifstream src(config_file_path, std::ios::binary);
		std::ofstream dst(config_file_bak_path, std::ios::binary);
		dst << src.rdbuf();
		src.close();

		LogInfo("Old configuration backed up to [{}]", config_file_bak_path);

		// read eqemu_config.json, transplant new fields and write to eqemu_config.json
		Json::Value   root;
		Json::Reader  reader;
		std::ifstream file(config_file_path);
		if (!reader.parse(file, root)) {
			LogError("Failed to parse configuration file");
			return;
		}
		file.close();

		// get old fields
		std::string host = !chat_host.empty() ? chat_host : mail_host;
		if (host.empty()) {
			host = "eqchat.eqemulator.net";
		}
		std::string port = chat_port > 0 ? std::to_string(chat_port) : std::to_string(mail_port);
		if (port.empty()) {
			port = "7778";
		}

		// set new fields
		root["server"]["ucs"]["host"] = host;
		root["server"]["ucs"]["port"] = port;

		// unset old fields
		root["server"].removeMember("chatserver");
		root["server"].removeMember("mailserver");

		// get Json::Value raw string
		std::string config = root.toStyledString();

		// format using more modern json library
		nlohmann::json data = nlohmann::json::parse(config);

		// write to file
		std::ofstream o(config_file_path);
		o << std::setw(1) << data << std::endl;
		o.close();

		// write new config
		LogInfo("New configuration written to [{}]", config_file_path);
		LogInfo("Migration complete, please review the new configuration file");

		// reload config internally
		try {
			std::ifstream fconfig(config_file_path, std::ifstream::binary);
			fconfig >> _config->_root;
			_config->parse_config();
		}
		catch (std::exception &) {
			return;
		}
	}
}