package it.myproject.movieuniverse.server;



/**
 * Created by IntelliJ IDEA.
 * User: lhuynh
 * Date: Dec 6, 2007
 * Time: 5:06:52 PM
 * To change this template use File | Settings | File Templates.
 */

import java.net.URLDecoder.*;
import java.util.*;
import java.util.HashMap;
import java.util.StringTokenizer.*;
import java.io.*;
import java.net.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class paypalfunctions  {


    private String gv_APIUserName;
    private String gv_APIPassword;
    private String gv_APISignature;

    private String gv_APIEndpoint;
    private String  gv_BNCode;

    private String  gv_Version;
    private String  gv_nvpHeader;
    private String  gv_ProxyServer;
    private String gv_ProxyServerPort;
    private int gv_Proxy;
    private boolean gv_UseProxy;
    private String PAYPAL_URL;

    public paypalfunctions() {//lhuynh - Actions to be Done on init of this class

    //BN Code is only applicable for partners
    gv_BNCode       ="PP-ECWizard";
    // Replace <API_USERNAME> with your API Username
    // Replace <API_PASSWORD> with your API Password
    // Replace <API_SIGNATURE> with your Signature
    gv_APIUserName  ="movieuniverse_api1.gmail.com";
    gv_APIPassword  ="E4T76Z68V4C38FS6";
    gv_APISignature ="AFcWxV21C7fd0v3bYYYRCpSSRl31AWKgxYWxptrQw.jokhnsrfl4nC6m";

    boolean bSandbox = true;

    /*
    Servers for NVP API
    Sandbox: https://api-3t.sandbox.paypal.com/nvp
    Live: https://api-3t.paypal.com/nvp
    */

    /*
    Redirect URLs for PayPal Login Screen
    Sandbox: https://www.sandbox.paypal.com/webscr&cmd=_express-checkout&token=XXXX
    Live: https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=XXXX
    */

    if (bSandbox == true)
    {
        gv_APIEndpoint ="https://api-3t.sandbox.paypal.com/nvp";
        PAYPAL_URL ="https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token=";
    }
    else
    {
        gv_APIEndpoint ="https://api-3t.paypal.com/nvp";
        PAYPAL_URL ="https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=";
    }

    String HTTPREQUEST_PROXYSETTING_SERVER = "";
    String HTTPREQUEST_PROXYSETTING_PORT = "";
    boolean USE_PROXY = false;

    gv_Version  = "93";

    //WinObjHttp Request proxy settings.
    gv_ProxyServer  = HTTPREQUEST_PROXYSETTING_SERVER;
    gv_ProxyServerPort = HTTPREQUEST_PROXYSETTING_PORT;
    gv_Proxy        = 2;    //'setting for proxy activation
    gv_UseProxy     = USE_PROXY;


}



/*********************************************************************************
  * CallShortcutExpressCheckout: Function to perform the SetExpressCheckout API call
  *
  * Inputs:
  *     paymentAmount:      Total value of the shopping cart
  *     currencyCodeType:   Currency code value the PayPal API
  *     paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
  *     returnURL:          the page where buyers return to after they are done with the payment review on PayPal
  *     cancelURL:          the page where buyers return to when they cancel the payment review on PayPal
  *
  * Output: Returns a HashMap object containing the response from the server.
*********************************************************************************/
public HashMap CallShortcutExpressCheckout( String paymentAmount, String returnURL, String cancelURL)
{

    /*
    '------------------------------------
    ' The currencyCodeType and paymentType
    ' are set to the selections made on the Integration Assistant
    '------------------------------------
    */

    String currencyCodeType = "EUR";
    String paymentType = "Sale";

    /*
    Construct the parameter string that describes the PayPal payment
    the varialbes were set in the web form, and the resulting string
    is stored in $nvpstr
    */
    String nvpstr = "&PAYMENTREQUEST_0_AMT=" + paymentAmount + "&PAYMENTREQUEST_0_PAYMENTACTION=" + paymentType + "&ReturnUrl=" + URLEncoder.encode( returnURL ) + "&CANCELURL=" + URLEncoder.encode( cancelURL ) + "&PAYMENTREQUEST_0_CURRENCYCODE=" + currencyCodeType;

    /*
    Make the call to PayPal to get the Express Checkout token
    If the API call succeded, then redirect the buyer to PayPal
    to begin to authorize payment.  If an error occured, show the
    resulting errors
    */

    HashMap nvp = httpcall("SetExpressCheckout", nvpstr);
    String strAck = nvp.get("ACK").toString();
    if(strAck !=null && strAck.equalsIgnoreCase("Success"))
    {
        return nvp;
    }

    return null;
}

/*********************************************************************************
  * CallMarkExpressCheckout: Function to perform the SetExpressCheckout API call
  *
  * Inputs:
  *     paymentAmount:      Total value of the shopping cart
  *     currencyCodeType:   Currency code value the PayPal API
  *     paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
  *     returnURL:          the page where buyers return to after they are done with the payment review on PayPal
  *     cancelURL:          the page where buyers return to when they cancel the payment review on PayPal
  *     shipToName:     the Ship to name entered on the merchant's site
  *     shipToStreet:       the Ship to Street entered on the merchant's site
  *     shipToCity:         the Ship to City entered on the merchant's site
  *     shipToState:        the Ship to State entered on the merchant's site
  *     shipToCountryCode:  the Code for Ship to Country entered on the merchant's site
  *     shipToZip:          the Ship to ZipCode entered on the merchant's site
  *     shipToStreet2:      the Ship to Street2 entered on the merchant's site
  *     phoneNum:           the phoneNum  entered on the merchant's site
  *
  * Output: Returns a HashMap object containing the response from the server.
*********************************************************************************/
public HashMap CallMarkExpressCheckout( String paymentAmount, String returnURL, String cancelURL, String shipToName, String shipToStreet, String shipToCity, String shipToState,
                                        String shipToCountryCode, String shipToZip, String shipToStreet2, String phoneNum)
{
    /*
    '------------------------------------
    ' The currencyCodeType and paymentType
    ' are set to the selections made on the Integration Assistant
    '------------------------------------
    */
    String currencyCodeType = "EUR";
    String paymentType = "SALE";

    /*
    Construct the parameter string that describes the PayPal payment
    the varialbes were set in the web form, and the resulting string
    is stored in $nvpstr
    */
    String  nvpstr = "ADDROVERRIDE=1&PAYMENTREQUEST_0_AMT=" + paymentAmount + "&PAYMENTREQUEST_0_PAYMENTACTION=" + paymentType;
    nvpstr=nvpstr.concat("&PAYMENTREQUEST_0_CURRENCYCODE=" + currencyCodeType + "&ReturnUrl=" + URLEncoder.encode( returnURL  ) + "&CANCELURL=" +
    URLEncoder.encode( cancelURL ));

    nvpstr=nvpstr.concat( "&PAYMENTREQUEST_0_SHIPTONAME=" + shipToName + "&PAYMENTREQUEST_0_SHIPTOSTREET=" + shipToStreet + "&PAYMENTREQUEST_0_SHIPTOSTREET2=" + shipToStreet2);
    nvpstr=nvpstr.concat("&PAYMENTREQUEST_0_SHIPTOCITY=" + shipToCity + "&PAYMENTREQUEST_0_SHIPTOSTATE=" + shipToState + "&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=" + shipToCountryCode);
    nvpstr=nvpstr.concat("&PAYMENTREQUEST_0_SHIPTOZIP=" + shipToZip + "&PAYMENTREQUEST_0_SHIPTOPHONENUM" + phoneNum);

    /*
    Make the call to PayPal to set the Express Checkout token
    If the API call succeded, then redirect the buyer to PayPal
    to begin to authorize payment.  If an error occured, show the
    resulting errors
    */

    HashMap nvp = httpcall("SetExpressCheckout", nvpstr);
    String strAck = nvp.get("ACK").toString();
    if(strAck !=null && !(strAck.equalsIgnoreCase("Success") || strAck.equalsIgnoreCase("SuccessWithWarning")))
    {
        return nvp;
    }

    return null;
}


/*********************************************************************************
  * GetShippingDetails: Function to perform the GetExpressCheckoutDetails API call
  *
  * Inputs:  None
  *
  * Output: Returns a HashMap object containing the response from the server.
*********************************************************************************/
public HashMap GetShippingDetails( String token)
{
    /*
    Build a second API request to PayPal, using the token as the
    ID to get the details on the payment authorization
    */

    String nvpstr= "&TOKEN=" + token;

   /*
    Make the API call and store the results in an array.  If the
    call was a success, show the authorization details, and provide
    an action to complete the payment.  If failed, show the error
    */

    HashMap nvp = httpcall("GetExpressCheckoutDetails", nvpstr);
    String strAck = nvp.get("ACK").toString();
    if(strAck !=null && !(strAck.equalsIgnoreCase("Success") || strAck.equalsIgnoreCase("SuccessWithWarning")))
    {
        return nvp;
    }
    return null;
}

/*********************************************************************************
  * GetShippingDetails: Function to perform the DoExpressCheckoutPayment API call
  *
  * Inputs:  None
  *
  * Output: Returns a HashMap object containing the response from the server.
*********************************************************************************/
public HashMap ConfirmPayment( String token, String payerID, String finalPaymentAmount, String serverName)
{

    /*
    '------------------------------------
    ' The currencyCodeType and paymentType
    ' are set to the selections made on the Integration Assistant
    '------------------------------------
    */
    String currencyCodeType = "EUR";
    String paymentType = "Sale";

  /*
    '----------------------------------------------------------------------------
    '----   Use the values stored in the session from the previous SetEC call
    '----------------------------------------------------------------------------
    */
    String nvpstr  = "&TOKEN=" + token + "&PAYERID=" + payerID + "&PAYMENTREQUEST_0_PAYMENTACTION=" + paymentType + "&PAYMENTREQUEST_0_AMT=" + finalPaymentAmount;

    nvpstr = nvpstr + "&PAYMENTREQUEST_0_CURRENCYCODE=" + currencyCodeType + "&IPADDRESS=" + serverName;

 /*
    Make the call to PayPal to finalize payment
    If an error occured, show the resulting errors
  */
    HashMap nvp = httpcall("DoExpressCheckoutPayment", nvpstr);
    String strAck = nvp.get("ACK").toString();
    if(strAck !=null && !(strAck.equalsIgnoreCase("Success") || strAck.equalsIgnoreCase("SuccessWithWarning")))
    {
        return nvp;
    }
    return null;

}


/*********************************************************************************
  * httpcall: Function to perform the API call to PayPal using API signature
  *     @ methodName is name of API  method.
  *     @ nvpStr is nvp string.
  * returns a NVP string containing the response from the server.
*********************************************************************************/
public HashMap httpcall( String methodName, String nvpStr)
{

    String version = "2.3";
    String agent = "Mozilla/4.0";
    String respText = "";
    HashMap nvp = null;   //lhuynh not used?

//    deformatNVP( nvpStr );
    String encodedData = "METHOD=" + methodName + "&VERSION=" + gv_Version + "&PWD=" + gv_APIPassword + "&USER=" + gv_APIUserName + "&SIGNATURE=" + gv_APISignature + nvpStr + "&BUTTONSOURCE=" + gv_BNCode;

    try
    {
        URL postURL = new URL( gv_APIEndpoint );
        HttpURLConnection conn = (HttpURLConnection)postURL.openConnection();

        // Set connection parameters. We need to perform input and output,
        // so set both as true.
        conn.setDoInput (true);
        conn.setDoOutput (true);

        // Set the content type we are POSTing. We impersonate it as
        // encoded form data
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setRequestProperty( "User-Agent", agent );

        //conn.setRequestProperty( "Content-Type", type );
        conn.setRequestProperty( "Content-Length", String.valueOf( encodedData.length()) );
        conn.setRequestMethod("POST");

        // get the output stream to POST to.
        DataOutputStream output = new DataOutputStream( conn.getOutputStream());
        output.writeBytes( encodedData );
        output.flush();
        output.close ();

        // Read input from the input stream.
        DataInputStream  in = new DataInputStream (conn.getInputStream());
        int rc = conn.getResponseCode();
        if ( rc != -1)
        {
            BufferedReader is = new BufferedReader(new InputStreamReader( conn.getInputStream()));
            String _line = null;
            while(((_line = is.readLine()) !=null))
            {
                respText = respText + _line;
            }
            nvp = deformatNVP( respText );
        }
        return nvp;
    }
    catch( IOException e )
    {
        // handle the error here
        return null;
    }
}

/*********************************************************************************
  * deformatNVP: Function to break the NVP string into a HashMap
  *     pPayLoad is the NVP string.
  * returns a HashMap object containing all the name value pairs of the string.
*********************************************************************************/
public HashMap deformatNVP( String pPayload )
{
    HashMap nvp = new HashMap();
    StringTokenizer stTok = new StringTokenizer( pPayload, "&");
    while (stTok.hasMoreTokens())
    {
        StringTokenizer stInternalTokenizer = new StringTokenizer( stTok.nextToken(), "=");
        if (stInternalTokenizer.countTokens() == 2)
        {
            String key = URLDecoder.decode( stInternalTokenizer.nextToken());
            String value = URLDecoder.decode( stInternalTokenizer.nextToken());
            nvp.put( key.toUpperCase(), value );
        }
    }
    return nvp;
}

/*********************************************************************************
  * RedirectURL: Function to redirect the user to the PayPal site
  *     token is the parameter that was returned by PayPal
  * returns a HashMap object containing all the name value pairs of the string.
*********************************************************************************/
public void RedirectURL( HttpServletResponse response, String token )
{
    String payPalURL = PAYPAL_URL + token;

    //response.sendRedirect( payPalURL );
    response.setStatus(302);
    response.setHeader( "Location", payPalURL );
    response.setHeader( "Connection", "close" );
}

//end class
}