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** This file is part of the demonstration applications of the Qt Toolkit.
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module networkaccessmanager;


import qt.core.QSettings;
import qt.gui.QDesktopServices;
import qt.gui.QDialog;
import qt.gui.QMessageBox;
import qt.gui.QStyle;
import qt.gui.QTextDocument;
import qt.network.QNetworkAccessManager;
import qt.network.QAuthenticator;
import qt.network.QNetworkDiskCache;
import qt.network.QNetworkProxy;
import qt.network.QNetworkReply;
import qt.network.QSslError;

import browserapplication;
import browsermainwindow;
import ui_passworddialog;
import ui_proxydialog;


class NetworkAccessManager : public QNetworkAccessManager
{
public:

	this(QObject parent = null)
	{
		super(parent);

		this.authenticationRequired.connect(&authenticationRequired);
		this.proxyAuthenticationRequired.connect(&proxyAuthenticationRequired);
		version(QT_NO_OPENSSL) {
			this.sslErrors.connect(&sslErrors);
		}
		loadSettings();

		QNetworkDiskCache diskCache = new QNetworkDiskCache(this);
		string location = QDesktopServices.storageLocation(QDesktopServices.CacheLocation);
		diskCache.setCacheDirectory(location);
		setCache(diskCache);
	}

private:

    string[] sslTrustedHostList;

public:

	void loadSettings()
	{
		auto settings = new QSettings;
		settings.beginGroup("proxy");
		QNetworkProxy proxy;
		if (settings.value("enabled", false).toBool()) {
			if (settings.value("type", 0).toInt() == 0)
				proxy = QNetworkProxy.Socks5Proxy;
			else
				proxy = QNetworkProxy.HttpProxy;
			proxy.setHostName(settings.value("hostName").toString());
			proxy.setPort(settings.value("port", 1080).toInt());
			proxy.setUser(settings.value("userName").toString());
			proxy.setPassword(settings.value("password").toString());
		}
		setProxy(proxy);
	}

private:

	void authenticationRequired(QNetworkReply reply, QAuthenticator auth)
	{
		BrowserMainWindow mainWindow = BrowserApplication.instance().mainWindow();

		auto dialog = new QDialog(mainWindow);
		dialog.setWindowFlags(Qt.Sheet);

		auto passwordDialog = new Ui.PasswordDialog;
		passwordDialog.setupUi(&dialog);

		passwordDialog.iconLabel.setText(null);
		passwordDialog.iconLabel.setPixmap(mainWindow.style().standardIcon(QStyle.SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));

		string introMessage = Format(tr("<qt>Enter username and password for \"{}\" at {}</qt>"), Qt.escape(reply.url().toString()), Qt.escape(reply.url().toString()));
		passwordDialog.introLabel.setText(introMessage);
		passwordDialog.introLabel.setWordWrap(true);

		if (dialog.exec() == QDialog.Accepted) {
			auth.setUser(passwordDialog.userNameLineEdit.text());
			auth.setPassword(passwordDialog.passwordLineEdit.text());
		}
	}

	void proxyAuthenticationRequired(QNetworkProxy proxy, QAuthenticator auth)
	{
		BrowserMainWindow mainWindow = BrowserApplication.instance().mainWindow();

		auto dialog = new QDialog(mainWindow);
		dialog.setWindowFlags(Qt.Sheet);

		auto proxyDialog = new Ui.ProxyDialog;
		proxyDialog.setupUi(&dialog);

		proxyDialog.iconLabel.setText(null);
		proxyDialog.iconLabel.setPixmap(mainWindow.style().standardIcon(QStyle.SP_MessageBoxQuestion, 0, mainWindow).pixmap(32, 32));

		string introMessage = Format(tr("<qt>Connect to proxy \"{}\" using:</qt>"), Qt.escape(proxy.hostName()));
		proxyDialog.introLabel.setText(introMessage);
		proxyDialog.introLabel.setWordWrap(true);

		if (dialog.exec() == QDialog.Accepted) {
			auth.setUser(proxyDialog.userNameLineEdit.text());
			auth.setPassword(proxyDialog.passwordLineEdit.text());
		}
	}

version(QT_NO_OPENSSL)
{
	void sslErrors(QNetworkReply reply, QSslError[] error)
	{
		// check if SSL certificate has been trusted already
		string replyHost = reply.url().host() ~ ":" ~ reply.url().port();
		if(! sslTrustedHostList.contains(replyHost)) {
			BrowserMainWindow mainWindow = BrowserApplication.instance().mainWindow();

			string[] errorStrings;
			for (int i = 0; i < error.count(); ++i)
				errorStrings += error[i].errorString();
			string errors = errorStrings ~ "\n";
			int ret = QMessageBox.warning(mainWindow, QCoreApplication.applicationName(),
				Format(tr("SSL Errors:\n\n{}\n\n{}\n\n"
				"Do you want to ignore these errors for this host?"), reply.url().toString(), errors),
				QMessageBox.Yes | QMessageBox.No, QMessageBox.No);
			if (ret == QMessageBox.Yes) {
				reply.ignoreSslErrors();
				sslTrustedHostList.append(replyHost);
			}
		}
	}
}

}