/*
 * Juick
 * Copyright (C) 2008-2011, Ugnich Anton
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.juick.www;

import com.juick.server.PMQueries;
import com.juick.server.TagQueries;
import com.juick.server.UserQueries;
import com.juick.util.MessageUtils;
import com.juick.util.WebUtils;
import com.mitchellbosecke.pebble.error.PebbleException;
import com.mitchellbosecke.pebble.template.PebbleTemplate;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import rocks.xmpp.addr.Jid;
import rocks.xmpp.core.session.XmppSession;
import rocks.xmpp.core.stanza.model.Message;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 *
 * @author Ugnich Anton
 */
public class PM {
    private static final Logger logger = LoggerFactory.getLogger(PM.class);

    protected void doGetInbox(JdbcTemplate sql, HttpServletRequest request, HttpServletResponse response, com.juick.User visitor) throws ServletException, IOException, PebbleException {

        String title = "PM: Inbox";
        List<com.juick.Message> msgs = PMQueries.getLastPMInbox(sql, visitor.getUid());
        msgs.forEach(m -> m.setText(MessageUtils.formatMessage(m.getText())));
        response.setContentType("text/html; charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            PebbleTemplate template = Utils.getEngine().getTemplate("views/pm_inbox.html");
            Map<String, Object> context = new HashMap<>();
            context.put("title", title);
            context.put("visitor", visitor);
            context.put("msgs", msgs);
            context.put("tags", TagQueries.getPopularTags(sql));
            template.evaluate(out, context);
        }
    }

    protected void doGetSent(JdbcTemplate sql, HttpServletRequest request, HttpServletResponse response, com.juick.User visitor) throws ServletException, IOException, PebbleException {

        String title = "PM: Sent";
        List<com.juick.Message> msgs = PMQueries.getLastPMSent(sql, visitor.getUid());

        String uname = request.getParameter("uname");
        if (WebUtils.isNotUserName(uname)) {
            uname = StringUtils.EMPTY;
        }

        response.setContentType("text/html; charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            PebbleTemplate template = Utils.getEngine().getTemplate("views/pm_sent.html");
            Map<String, Object> context = new HashMap<>();
            context.put("title", title);
            context.put("visitor", visitor);
            context.put("msgs", msgs);
            context.put("tags", TagQueries.getPopularTags(sql));
            context.put("uname", uname);
            template.evaluate(out, context);
        }
    }

    public void doPostPM(JdbcTemplate sql, HttpServletRequest request, HttpServletResponse response, XmppSession xmpp, com.juick.User visitor) throws ServletException, IOException {
        String uname = request.getParameter("uname");
        if (uname.startsWith("@")) {
            uname = uname.substring(1);
        }
        int uid = 0;
        if (WebUtils.isUserName(uname)) {
            uid = UserQueries.getUIDbyName(sql, uname);
        }

        String body = request.getParameter("body");
        if (uid == 0 || body == null || body.length() < 1 || body.length() > 10240) {
            response.sendError(HttpServletResponse.SC_BAD_REQUEST);
            return;
        }

        if (UserQueries.isInBLAny(sql, uid, visitor.getUid())) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN);
            return;
        }

        if (PMQueries.createPM(sql, visitor.getUid(), uid, body)) {
            if (xmpp != null) {
                Message msg = new Message();
                msg.setFrom(Jid.of("juick@juick.com"));
                msg.setTo(Jid.of(String.format("%d@push.juick.com", uid)));
                com.juick.Message jmsg = new com.juick.Message();
                jmsg.setUser(visitor);
                jmsg.setText(body);
                msg.addExtension(jmsg);
                xmpp.send(msg);

                msg.setTo(Jid.of(String.format("%d@ws.juick.com", uid)));
                xmpp.send(msg);

                List<String> jids = UserQueries.getJIDsbyUID(sql, uid);
                for (String jid : jids) {
                    Message mm = new Message();
                    mm.setTo(Jid.of(jid));
                    mm.setType(Message.Type.CHAT);
                    if (PMQueries.havePMinRoster(sql, visitor.getUid(), jid)) {
                        mm.setFrom(Jid.of(jmsg.getUser().getName(), "juick.com", "Juick"));
                        mm.setBody(body);
                    } else {
                        mm.setFrom(Jid.of("juick", "juick.com", "Juick"));
                        mm.setBody("Private message from @" + jmsg.getUser().getName() + ":\n" + body);
                    }
                    xmpp.send(mm);
                }
            } else {
                logger.warn("XMPP unavailable");
            }

            Utils.sendTemporaryRedirect(response, "/pm/sent");

        } else {
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
    }
}