package net.i2p.router.web;

import java.io.File;
import java.io.IOException;
import java.io.Writer;

import net.i2p.data.DataHelper;
import net.i2p.router.RouterContext;

/**
 *  Refactored from summarynoframe.jsp to save ~100KB
 *
 */
public class SummaryBarRenderer {
    private final RouterContext _context;
    private final SummaryHelper _helper;

    public SummaryBarRenderer(RouterContext context, SummaryHelper helper) {
        _context = context;
        _helper = helper;
    }

    /**
     *  Note - ensure all links in here are absolute, as the summary bar may be displayed
     *         on lower-level directory errors.
     */
    public void renderSummaryHTML(Writer out) throws IOException {
        StringBuilder buf = new StringBuilder(8*1024);
        String theme = _context.getProperty(CSSHelper.PROP_THEME_NAME, CSSHelper.DEFAULT_THEME);
        
        buf.append("<a href=\"/\" target=\"_top\"><img src=\"")
           .append(CSSHelper.BASE_THEME_PATH)
           .append(theme)
           .append("/images/i2plogo.png\" alt=\"")
           .append(_("I2P Router Console"))
           .append("\" title=\"")
           .append(_("I2P Router Console"))
           .append("\"></a><hr>")
           
           .append("<h3><a href=\"/help\" target=\"_top\" title=\"")
           .append(_("I2P Router Help &amp; FAQ"))
           .append("\">")
           .append(_("Help &amp; FAQ"))
           .append("</a></h3><hr>");

        File lpath = new File(_context.getBaseDir(), "docs/toolbar.html");
        // you better have target="_top" for the links in there...
        if (lpath.exists()) {
            ContentHelper linkhelper = new ContentHelper();
            linkhelper.setPage(lpath.getAbsolutePath());
            linkhelper.setMaxLines("100");
            buf.append(linkhelper.getContent());
        } else {
            buf.append("<h3><a href=\"/configclients\" target=\"_top\" title=\"")
               .append(_("Configure startup of clients and webapps (services); manually start dormant services"))
               .append("\">")
               .append(_("I2P Services"))
               .append("</a></h3>\n" +

                       "<hr><table>" +

                       "<tr><td><a href=\"/susidns/index.jsp\" target=\"_blank\" title=\"")
               .append(_("Manage your I2P hosts file here (I2P domain name resolution)"))
               .append("\">")
               .append(_("Addressbook"))
               .append("</a>\n" +

                       "<a href=\"/i2psnark/\" target=\"_blank\" title=\"")
               .append(_("Built-in anonymous BitTorrent Client"))
               .append("\">")
               .append(_("Torrents"))
               .append("</a>\n" +

                       "<a href=\"/susimail/susimail\" target=\"blank\" title=\"")
               .append(_("Anonymous webmail client"))
               .append("\">")
               .append(_("Webmail"))
               .append("</a>\n" +

                       "<a href=\"http://127.0.0.1:7658/\" target=\"_blank\" title=\"")
               .append(_("Anonymous resident webserver"))
               .append("\">")
               .append(_("Webserver"))
               .append("</a>")

               .append(NavHelper.getClientAppLinks(_context))

               .append("</td></tr></table>\n" +

                       "<hr><h3><a href=\"/config\" target=\"_top\" title=\"")
               .append(_("Configure I2P Router"))
               .append("\">")
               .append(_("I2P Internals"))
               .append("</a></h3><hr>\n" +

                       "<table><tr><td>\n" +

                       "<a href=\"/tunnels\" target=\"_top\" title=\"")
               .append(_("View existing tunnels and tunnel build status"))
               .append("\">")
               .append(_("Tunnels"))
               .append("</a>\n" +

                       "<a href=\"/peers\" target=\"_top\" title=\"")
               .append(_("Show all current peer connections"))
               .append("\">")
               .append(_("Peers"))
               .append("</a>\n" +

                       "<a href=\"/profiles\" target=\"_top\" title=\"")
               .append(_("Show recent peer performance profiles"))
               .append("\">")
               .append(_("Profiles"))
               .append("</a>\n" +

                       "<a href=\"/netdb\" target=\"_top\" title=\"")
               .append(_("Show list of all known I2P routers"))
               .append("\">")
               .append(_("NetDB"))
               .append("</a>\n" +

                       "<a href=\"/logs\" target=\"_top\" title=\"")
               .append(_("Health Report"))
               .append("\">")
               .append(_("Logs"))
               .append("</a>\n");

           //          "<a href=\"/jobs.jsp\" target=\"_top\" title=\"")
           //  .append(_("Show the router's workload, and how it's performing"))
           //  .append("\">")
           //  .append(_("Jobs"))
           //  .append("</a>\n" +

            if (!StatSummarizer.isDisabled()) {
                buf.append("<a href=\"/graphs\" target=\"_top\" title=\"")
               .append(_("Graph router performance"))
               .append("\">")
               .append(_("Graphs"))
               .append("</a>\n");
            }

            buf.append("<a href=\"/stats\" target=\"_top\" title=\"")
               .append(_("Textual router performance statistics"))
               .append("\">")
               .append(_("Stats"))
               .append("</a>\n" +

                        "<a href=\"/i2ptunnel/\" target=\"_blank\" title=\"")
               .append(_("Local Destinations"))
               .append("\">")
               .append(_("I2PTunnel"))
               .append("</a>\n");

            File javadoc = new File(_context.getBaseDir(), "docs/javadoc/index.html");
            if (javadoc.exists())
                buf.append("<a href=\"/javadoc/index.html\" target=\"_blank\">Javadoc</a>\n");
            buf.append("</td></tr></table>\n");

            out.write(buf.toString());
            buf.setLength(0);
        }



        buf.append("<hr><h3><a href=\"/help\" target=\"_top\" title=\"")
           .append(_("I2P Router Help"))
           .append("\">")
           .append(_("General"))
           .append("</a></h3><hr>\n" +

                   "<table><tr>" +
                   "<td align=\"left\"><b>")
           .append(_("Local Identity"))
           .append(":</b></td>" +
                   "<td align=\"right\">" +
                   "<a title=\"")
           .append(_("Your unique I2P router identity is"))
           .append(' ')
           .append(_helper.getIdent())
           .append(", ")
           .append(_("never reveal it to anyone"))
           .append("\" href=\"/netdb?r=.\" target=\"_top\">")
           .append(_("show"))
           .append("</a></td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Version"))
           .append(":</b></td>" +
                   "<td align=\"right\">")
           .append(_helper.getVersion())
           .append("</td></tr>\n" +

                   "<tr title=\"")
           .append(_("How long we've been running for this session"))
           .append("\">" +
                   "<td align=\"left\"><b>")
           .append(_("Uptime"))
           .append(":</b></td>" +
                   "<td align=\"right\">")
           .append(_helper.getUptime())
           .append("</td></tr></table>\n" +

                   "<hr><h4><a href=\"/config#help\" target=\"_top\" title=\"")
           .append(_("Help with configuring your firewall and router for optimal I2P performance"))
           .append("\">")
           .append(_("Network"))
           .append(": ")
           .append(_helper.getReachability())
           .append("</a></h4><hr>\n");


        // display all the time so we display the final failure message, and plugin update messages too
        buf.append(UpdateHandler.getStatus());
        if (_helper.updateAvailable() || _helper.unsignedUpdateAvailable()) {
            if ("true".equals(System.getProperty(UpdateHandler.PROP_UPDATE_IN_PROGRESS))) {
                // nothing
            } else if(
                      // isDone() is always false for now, see UpdateHandler
                      // ((!update.isDone()) &&
                      _helper.getAction() == null &&
                      _helper.getUpdateNonce() == null &&
                      ConfigRestartBean.getRestartTimeRemaining() > 12*60*1000) {
                long nonce = _context.random().nextLong();
                String prev = System.getProperty("net.i2p.router.web.UpdateHandler.nonce");
                if (prev != null)
                    System.setProperty("net.i2p.router.web.UpdateHandler.noncePrev", prev);
                System.setProperty("net.i2p.router.web.UpdateHandler.nonce", nonce+"");
                String uri = _helper.getRequestURI();
                buf.append("<form action=\"").append(uri).append("\" method=\"POST\">\n");
                buf.append("<input type=\"hidden\" name=\"updateNonce\" value=\"").append(nonce).append("\" >\n");
                if (_helper.updateAvailable()) {
                    buf.append("<button type=\"submit\" name=\"updateAction\" value=\"signed\" >")
                       // Note to translators: parameter is a version, e.g. "0.8.4"
                       .append(_("Download {0} Update", _helper.getUpdateVersion()))
                       .append("</button><br>\n");
                }
                if (_helper.unsignedUpdateAvailable()) {
                    buf.append("<button type=\"submit\" name=\"updateAction\" value=\"Unsigned\" >")
                       // Note to translators: parameter is a date and time, e.g. "02-Mar 20:34 UTC"
                       // <br> is optional, to help the browser make the lines even in the button
                       // If the translation is shorter than the English, you should probably not include <br>
                       .append(_("Download Unsigned<br>Update {0}", _helper.getUnsignedUpdateVersion()))
                       .append("</button><br>\n");
                }
                buf.append("</form>\n");
            }
        }




        buf.append(ConfigRestartBean.renderStatus(_helper.getRequestURI(), _helper.getAction(), _helper.getConsoleNonce()))

           .append("<hr><h3><a href=\"/peers\" target=\"_top\" title=\"")
           .append(_("Show all current peer connections"))
           .append("\">")
           .append(_("Peers"))
           .append("</a></h3><hr>\n" +

                   "<table>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Active"))
           .append(":</b></td><td align=\"right\">");
        int active = _helper.getActivePeers();
        buf.append(active)
           .append(SummaryHelper.THINSP)
           .append(Math.max(active, _helper.getActiveProfiles()))
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Fast"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getFastPeers())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("High capacity"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getHighCapacityPeers())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Integrated"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getWellIntegratedPeers())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Known"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getAllPeers())
           .append("</td></tr>\n" +

                   "</table><hr>\n");


        out.write(buf.toString());
        buf.setLength(0);


        boolean anotherLine = false;
        if (_helper.showFirewallWarning()) {
            buf.append("<h4><a href=\"/config\" target=\"_top\" title=\"")
               .append(_("Help with firewall configuration"))
               .append("\">")
               .append(_("Check NAT/firewall"))
               .append("</a></h4>");
            anotherLine = true;
        }

        boolean reseedInProgress = Boolean.valueOf(System.getProperty("net.i2p.router.web.ReseedHandler.reseedInProgress")).booleanValue();
        // If showing the reseed link is allowed
        if (_helper.allowReseed()) {
            if (reseedInProgress) {
                // While reseed occurring, show status message instead
                buf.append("<i>").append(System.getProperty("net.i2p.router.web.ReseedHandler.statusMessage","")).append("</i><br>");
            } else {
                // While no reseed occurring, show reseed link
                long nonce = _context.random().nextLong();
                String prev = System.getProperty("net.i2p.router.web.ReseedHandler.nonce");
                if (prev != null) System.setProperty("net.i2p.router.web.ReseedHandler.noncePrev", prev);
                System.setProperty("net.i2p.router.web.ReseedHandler.nonce", nonce+"");
                String uri = _helper.getRequestURI();
                buf.append("<p><form action=\"").append(uri).append("\" method=\"POST\">\n");
                buf.append("<input type=\"hidden\" name=\"reseedNonce\" value=\"").append(nonce).append("\" >\n");
                buf.append("<button type=\"submit\" value=\"Reseed\" >").append(_("Reseed")).append("</button></form></p>\n");
            }
            anotherLine = true;
        }
        // If a new reseed ain't running, and the last reseed had errors, show error message
        if (!reseedInProgress) {
            String reseedErrorMessage = System.getProperty("net.i2p.router.web.ReseedHandler.errorMessage","");
            if (reseedErrorMessage.length() > 0) {
                buf.append("<i>").append(reseedErrorMessage).append("</i><br>");
                anotherLine = true;
            }
        }
        if (anotherLine)
            buf.append("<hr>");


        buf.append("<h3><a href=\"/config\" title=\"")
           .append(_("Configure router bandwidth allocation"))
           .append("\" target=\"_top\">")
           .append(_("Bandwidth in/out"))
           .append("</a></h3><hr>" +
                   "<table>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(DataHelper.formatDuration2(3 * 1000))   // lie and say 3 sec since 1 sec would appear as 1000 ms
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getSecondKBps())
           .append("Bps</td></tr>\n");

        if (_context.router().getUptime() > 6*60*1000) {
            buf.append("<tr><td align=\"left\"><b>")
           .append(DataHelper.formatDuration2(5 * 60 * 1000))   // 5 min
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getFiveMinuteKBps())
           .append("Bps</td></tr>\n");
        }

        if (_context.router().getUptime() > 2*60*1000) {
            buf.append("<tr><td align=\"left\"><b>")
           .append(_("Total"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getLifetimeKBps())
           .append("Bps</td></tr>\n");
        }

        buf.append("<tr><td align=\"left\"><b>")
           .append(_("Used"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getInboundTransferred())
           .append(SummaryHelper.THINSP)
           .append(_helper.getOutboundTransferred())
           .append("</td></tr></table>\n" +

                   "<hr><h3><a href=\"/tunnels\" target=\"_top\" title=\"")
           .append(_("View existing tunnels and tunnel build status"))
           .append("\">")
           .append(_("Tunnels"))
           .append("</a></h3><hr>" +
                   "<table>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Exploratory"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getInboundTunnels() + _helper.getOutboundTunnels())
           .append("</td></tr>\n" +

                  "<tr><td align=\"left\"><b>")
           .append(_("Client"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getInboundClientTunnels() + _helper.getOutboundClientTunnels())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Participating"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getParticipatingTunnels())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Share ratio"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getShareRatio())
           .append("</td></tr>\n" +

                   "</table><hr><h3><a href=\"/jobs\" target=\"_top\" title=\"")
           .append(_("What's in the router's job queue?"))
           .append("\">")
           .append(_("Congestion"))
           .append("</a></h3><hr>" +
                   "<table>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Job lag"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getJobLag())
           .append("</td></tr>\n" +

                   "<tr><td align=\"left\"><b>")
           .append(_("Message delay"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getMessageDelay())
           .append("</td></tr>\n");

        if (!_context.getBooleanPropertyDefaultTrue("router.disableTunnelTesting")) {
            buf.append("<tr><td align=\"left\"><b>")
           .append(_("Tunnel lag"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getTunnelLag())
           .append("</td></tr>\n");
        }

        buf.append("<tr><td align=\"left\"><b>")
           .append(_("Backlog"))
           .append(":</b></td><td align=\"right\">")
           .append(_helper.getInboundBacklog())
           .append("</td></tr>\n" +

                   "</table><hr><h4>")
           .append(_(_helper.getTunnelStatus()))
           .append("</h4><hr>\n")
           .append(_helper.getDestinations());



        out.write(buf.toString());
    }

    /** translate a string */
    private String _(String s) {
        return Messages.getString(s, _context);
    }

    /** translate a string with a parameter */
    private String _(String s, Object o) {
        return Messages.getString(s, o, _context);
    }
}