#include <QDebug>
#include <QGuiApplication>

#include "../include/climanager.h"
#include "../include/cmdmanager.h"
#include "../include/config.h"
#include <json/json.h>

using namespace std;

namespace CmdManager {
QString cachedIP;
QString cachedPort;
QMLHandler *qmlHandler;
map<string, void (*)(Json::Value)> cmdmap;
map<string, struct fileEntry> filemap;
} // namespace CmdManager

void CmdManager::init() {
	cmdmap["error"] = &CmdManager::handleError;
	cmdmap["status"] = &CmdManager::handleStatus;
	cmdmap["close"] = &CmdManager::handleClose;
	cmdmap["list"] = &CmdManager::handleList;
	cmdmap["extendedlist"] = &CmdManager::handleExtendedList;
	cmdmap["connect"] = &CmdManager::handleConnect;
	cmdmap["version"] = &CmdManager::handleVersion;
	cmdmap["login"] = &CmdManager::handleLogin;
	cmdmap["signup"] = &CmdManager::handleSignup;
	cmdmap["put"] = &CmdManager::handlePut;
	cmdmap["putdata"] = &CmdManager::handlePutData;
	cmdmap["get"] = &CmdManager::handleGet;
	cmdmap["getdata"] = &CmdManager::handleGetData;
	cmdmap["deleteme"] = &CmdManager::handleDeleteMe;
	cmdmap["deletefile"] = &CmdManager::handleDeleteFile;
	cmdmap["notifications"] = &CmdManager::handleNotifications;
	cmdmap["queue"] = &CmdManager::handleQueue;
	cmdmap["dequeue"] = &CmdManager::handleDequeue;
	cmdmap["extendedstatus"] = &CmdManager::handleExtendedStatus;
	cmdmap["keyfile"] = &CmdManager::handleKeyfile;
	cmdmap["closekey"] = &CmdManager::handleClosekey;
	cmdmap["disconnect"] = &CmdManager::handleDisconnect;
	cmdmap["connectionerror"] = &CmdManager::handleConnectionError;

	filemap.clear();
}

void CmdManager::setQmlHandler(QMLHandler *q) { qmlHandler = q; }

void CmdManager::updateInternalFile(string name, string type, string method, int progress, float speed) {
	map<string, struct fileEntry>::iterator it = filemap.find(name);
	if (it != filemap.end()) {
		it->second.type = type;
		it->second.method = method;
		it->second.progress = progress;
		it->second.speed = speed;
		it->second.dirty = true;
	}
}

void CmdManager::emitFileList() {
	map<string, struct fileEntry>::iterator it;
	char speedbuf[256];
	string progstr;

	for (it = filemap.begin(); it != filemap.end(); it++) {
		// This is a transfer
		if (it->second.type.size()) {
			// using a covert channel
			if (it->second.method.size()) {
				snprintf(speedbuf, 256, "%.2f B/s", it->second.speed);
				progstr = it->second.type + " via " + it->second.method + "\n" + std::to_string(it->second.progress) + "%" + " @ " + speedbuf;
			} else
				progstr = it->second.type + "\n" + std::to_string(it->second.progress) + "%";
			emit qmlHandler->serverFilesUpdateFile(it->first.c_str(), progstr.c_str(), it->second.type == "Queued" || it->second.type == "Sending");
		}
		// else emit plain entry
		else
			emit qmlHandler->serverFilesUpdateFile(it->first.c_str(), "", false);
	}
}

void CmdManager::cleanInternalList() {
	map<string, struct fileEntry>::iterator it;

	for (it = filemap.begin(); it != filemap.end(); it++) {
		if (!it->second.dirty) {
			it->second.type.clear();
			it->second.method.clear();
			it->second.progress = 0;
			it->second.speed = 0;
		} else
			it->second.dirty = false;
	}
}

void printInternalList() {
	map<string, struct fileEntry>::iterator it;

	for (it = CmdManager::filemap.begin(); it != CmdManager::filemap.end(); it++)
		emit CmdManager::qmlHandler->log((string("IFL ENTRY ") + it->first + " " + it->second.type + " " + it->second.method + " " +
		                                  std::to_string(it->second.progress) + " " + std::to_string(it->second.speed) + " " + std::to_string(it->second.dirty))
		                                     .c_str());
}

void CmdManager::executeCmd(string cmd, Json::Value root) {
	map<string, void (*)(Json::Value)>::iterator it = cmdmap.find(cmd);
	if (it == cmdmap.end()) {
		return;
	}
	cmdmap[cmd](root);
}

void CmdManager::setCachedIP(QString ip) { cachedIP = ip; }

void CmdManager::setCachedPort(QString port) { cachedPort = port; }

void CmdManager::handleError(Json::Value root) { emit qmlHandler->log(root["error"].asString().c_str()); }

void CmdManager::handleStatus(Json::Value root) { emit qmlHandler->footerSetStatus(root["response"].asString().c_str()); }

void CmdManager::handleClose(Json::Value root) { CliManager::setProgramActive(false); }

void CmdManager::handleList(Json::Value root) {
	char sizebuf[256];
	snprintf(sizebuf, 256, "%.2f", 4.2f);
	if (root["accept"] == true) {
		emit qmlHandler->serverFilesClearFileList();
		filemap.clear();

		// Get the array of file Names
		auto fileNames = root["names"];
		for (int i = 0; i < fileNames.size(); i++) {
			emit qmlHandler->serverFilesListFile(QString::fromStdString(fileNames[i].asString()), QString::fromStdString(sizebuf), QString("Decryptable"),
			                                     !!ifstream(fileNames[i].asString()));
			filemap[fileNames[i].asString()] = {false, "", "", 0, 0};
		}
	} else {
		emit qmlHandler->log(root["error"].asString().c_str());
	}
}

void CmdManager::handleExtendedList(Json::Value root) {
	char sizebuf[256];
	if (root["accept"] == true) {
		emit qmlHandler->serverFilesClearFileList();
		filemap.clear();

		// Get the array of file Names
		auto files = root["files"];
		for (Json::Value f : files) {
			snprintf(sizebuf, 256, "%.2f", f["size"].asFloat());
			emit qmlHandler->serverFilesListFile(QString::fromStdString(f["name"].asString()), QString::fromStdString(sizebuf),
			                                     QString::fromStdString(f["encrypted"].asString()), !!ifstream(f["name"].asString()));
			filemap[f["name"].asString()] = {false, "", "", 0, 0};
		}
	} else {
		emit qmlHandler->log(root["error"].asString().c_str());
	}
}

void CmdManager::handleConnect(Json::Value root) {
	if (!root["accept"].asBool()) {
		emit qmlHandler->ipPopupSetStatus(root["error"].asString().c_str());
		emit qmlHandler->ipPopupEnableConnectButton();
	}
}

void CmdManager::handleVersion(Json::Value root) {
	if (root["accept"] == true) {
		emit qmlHandler->ipPopupClose();
		emit qmlHandler->loginSignupPopupOpen();
	} else {
		QString errorMessage =
		    QString::fromStdString(string("Version mismatch: \nClient: " + root["clientversion"].asString() + "\nServer: " + root["serverversion"].asString()));
		emit qmlHandler->ipPopupSetStatus(errorMessage);
		emit qmlHandler->ipPopupEnableConnectButton();
	}
}

void CmdManager::handleLogin(Json::Value root) {
	if (root["accept"] == true) {
		emit qmlHandler->loginSignupPopupClose();
		CliManager::loggedin = true;
	} else {
		QString cmd = "connect " + cachedIP + " " + cachedPort;
		emit qmlHandler->loginSetStatus(root["error"].asString().c_str());
		CliManager::writeToCli(cmd);
		emit qmlHandler->loginEnableLoginButton();
	}
}

void CmdManager::handleSignup(Json::Value root) {
	if (root["accept"] == true) {
		emit qmlHandler->loginSignupPopupClose();
		CliManager::loggedin = true;
	} else {
		QString cmd = "connect " + cachedIP + " " + cachedPort;
		emit qmlHandler->signupSetStatus(root["error"].asString().c_str());
		CliManager::writeToCli(cmd);
		emit qmlHandler->signupEnableRegisterButton();
	}
}

void CmdManager::handlePut(Json::Value root) {
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when uploading file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
}

void CmdManager::handlePutData(Json::Value root) {
	if (root["cancel"] == true) {
		QString errorMessage = QString::fromStdString(string("Error when uploading file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
}

void CmdManager::handleGet(Json::Value root) {
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when downloading file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	} else {
		string fileName = root["file"].asString();
		emit qmlHandler->serverFilesDisableDownloadButton(QString::fromStdString(fileName));
	}
}

void CmdManager::handleGetData(Json::Value root) {
	if (root["cancel"] == true) {
		QString errorMessage = QString::fromStdString(string("Error when downloading file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
}

void CmdManager::handleDeleteMe(Json::Value root) {
	if (root["accept"] == true) {
		CliManager::loggedin = true;
		qmlHandler->setRestart(true);
		emit qmlHandler->closeWindow();
	} else {
		QString errorMessage = QString::fromStdString(root["error"].asString());
		emit qmlHandler->deleteMePopupSetStatus(errorMessage);
	}
}

void CmdManager::handleDeleteFile(Json::Value root) {
	emit qmlHandler->serverFilesCloseConfirmDeletePopup();
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when deleting file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	} else {
		QString message = QString::fromStdString(string("Deleted file " + root["file"].asString() + " from the server!"));
		emit qmlHandler->log(message);
	}
}

void CmdManager::handleNotifications(Json::Value root) {
	if (root["accept"] == true) {
		if (!root["messages"].isNull()) {
			// Get the array of notifications
			auto notifications = root["messages"];
			for (int i = 0; i < notifications.size(); i++) {
				emit qmlHandler->notification(QString::fromStdString(notifications[i].asString()));
			}

			if (notifications.size() > 1)
				emit qmlHandler->showDesktopNotification("Covert Channel - New Notifications",
				                                         "You have multiple new notifications. Open the program to see them.");
			else if (notifications.size() == 1)
				emit qmlHandler->showDesktopNotification("Covert Channel - New Notification", QString::fromStdString(notifications[0].asString()));
		}
	} else {
		emit qmlHandler->log(root["error"].asString().c_str());
	}
}

void CmdManager::handleQueue(Json::Value root) {
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when queueing file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
}

void CmdManager::handleDequeue(Json::Value root) {
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when dequeueing file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
}

void CmdManager::handleExtendedStatus(Json::Value root) {
	Json::Value cs, ss;
	string typestring;
	if (!root["accept"].asBool()) {
		QString errorMessage = QString::fromStdString(string("Error when loading status " + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	} else {
		cs = root["transfersclientserver"];
		ss = root["transfersserverserver"];
		if (!cs.isNull()) {
			for (Json::Value t : cs) {
				updateInternalFile(t["file"].asString(), t["upload"].asBool() ? "Upload" : "Download", "", t["progress"].asInt(), 0);
			}
		}
		if (!ss.isNull()) {
			for (Json::Value t : ss) {
				if (t["type"] == "download")
					typestring = "Receiving";
				else if (t["type"] == "upload")
					typestring = "Sending";
				else if (t["type"] == "queued")
					typestring = "Queued";
				updateInternalFile(t["file"].asString(), typestring, t["method"].asString(), t["progress"].asInt(), t["speed"].asFloat());
			}
		}
		cleanInternalList();
		emitFileList();
	}
}

void CmdManager::handleKeyfile(Json::Value root) {
	QString errorMessage;
	if (root["accept"] == false) {
		errorMessage = QString::fromStdString(string("Error when setting keyfile file " + root["file"].asString() + ":\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	}
	emit qmlHandler->keyfileStatus(root["accept"].asBool(), errorMessage);
}

void CmdManager::handleClosekey(Json::Value root) {
	if (root["accept"] == false) {
		QString errorMessage = QString::fromStdString(string("Error when closing keyfile:\n" + root["error"].asString()));
		emit qmlHandler->log(errorMessage);
	} else {
		emit qmlHandler->keyfileClosedOK();
	}
}

void CmdManager::handleDisconnect(Json::Value root) {
	if (root["accept"] == true) {
		CliManager::loggedin = false;
	}
}

void CmdManager::handleConnectionError(Json::Value root) {
	emit qmlHandler->footerSetError("Connection to the server lost. Use << File->Change Server... >> to connect again.");
}