package com.fsck.k9.mail.store;

import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.scheme.LayeredSocketFactory;
import org.apache.http.params.HttpParams;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;


/*
 * TODO: find out what's going on here and document it.
 * Using two socket factories looks suspicious.
 */
public class WebDavSocketFactory implements LayeredSocketFactory {
    private SSLSocketFactory mSocketFactory;
    private org.apache.http.conn.ssl.SSLSocketFactory mSchemeSocketFactory;

    public WebDavSocketFactory(String host, boolean secure) throws NoSuchAlgorithmException, KeyManagementException {
        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(null, new TrustManager[] {
                TrustManagerFactory.get(host, secure)
        }, new SecureRandom());
        mSocketFactory = sslContext.getSocketFactory();
        mSchemeSocketFactory = org.apache.http.conn.ssl.SSLSocketFactory.getSocketFactory();
        mSchemeSocketFactory.setHostnameVerifier(
                org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
    }

    public Socket connectSocket(Socket sock, String host, int port,
            InetAddress localAddress, int localPort, HttpParams params)
            throws IOException, UnknownHostException, ConnectTimeoutException {
        return mSchemeSocketFactory.connectSocket(sock, host, port, localAddress, localPort, params);
    }

    public Socket createSocket() throws IOException {
        return mSocketFactory.createSocket();
    }

    public boolean isSecure(Socket sock) throws IllegalArgumentException {
        return mSchemeSocketFactory.isSecure(sock);
    }
    public Socket createSocket(
            final Socket socket,
            final String host,
            final int port,
            final boolean autoClose
    ) throws IOException, UnknownHostException {
        SSLSocket sslSocket = (SSLSocket) mSocketFactory.createSocket(
                socket,
                host,
                port,
                autoClose
        );
        //hostnameVerifier.verify(host, sslSocket);
        // verifyHostName() didn't blowup - good!
        return sslSocket;
    }
}
