/*
 * Copyright (C) 2008-2017, Juick
 *
 * 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.controllers;

import com.juick.server.util.HttpBadRequestException;
import com.juick.server.util.HttpForbiddenException;
import com.juick.service.MessagesService;
import com.juick.service.PMQueriesService;
import com.juick.service.TagService;
import com.juick.service.UserService;
import com.juick.server.util.UserUtils;
import com.juick.server.util.WebUtils;
import com.juick.www.WebApp;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import rocks.xmpp.addr.Jid;
import rocks.xmpp.core.stanza.model.Message;

import javax.inject.Inject;
import java.io.IOException;
import java.util.List;

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

    @Inject
    PMQueriesService pmQueriesService;
    @Inject
    TagService tagService;
    @Inject
    UserService userService;
    @Inject
    MessagesService messagesService;
    @Inject
    WebApp webApp;

    @GetMapping("/pm/inbox")
    protected String doGetInbox(ModelMap model) {
        com.juick.User visitor = UserUtils.getCurrentUser();
        if (visitor.getUid() == 0) {
            return "redirect:/login";
        }
        String title = "PM: Inbox";
        List<com.juick.Message> msgs = pmQueriesService.getLastPMInbox(visitor.getUid());
        model.addAttribute("title", title);
        model.addAttribute("visitor", visitor);
        model.addAttribute("msgs", msgs);
        model.addAttribute("tags", tagService.getPopularTags());
        return "views/pm_inbox";
    }

    @GetMapping("/pm/sent")
    protected String doGetSent(@RequestParam(required = false) String uname,
                               ModelMap model) {
        com.juick.User visitor = UserUtils.getCurrentUser();
        if (visitor.getUid() == 0) {
            return "redirect:/login";
        }
        String title = "PM: Sent";
        List<com.juick.Message> msgs = pmQueriesService.getLastPMSent(visitor.getUid());

        if (WebUtils.isNotUserName(uname)) {
            uname = StringUtils.EMPTY;
        }

        model.addAttribute("title", title);
        model.addAttribute("visitor", visitor);
        model.addAttribute("msgs", msgs);
        model.addAttribute("tags", tagService.getPopularTags());
        model.addAttribute("uname", uname);
        return "views/pm_sent";
    }

    @PostMapping("/pm/send")
    public String doPostPM(@RequestParam(name = "uname", required = false) String unameParam,
                         @RequestParam String body) throws IOException {
        com.juick.User visitor = UserUtils.getCurrentUser();
        if (visitor.getUid() == 0 || visitor.isBanned()) {
            throw new HttpForbiddenException();
        }
        String uname = unameParam;
        if (uname.startsWith("@")) {
            uname = uname.substring(1);
        }
        int uid = 0;
        if (WebUtils.isUserName(uname)) {
            uid = userService.getUIDbyName(uname);
        }

        if (uid == 0 || body.length() > 10240) {
            throw new HttpBadRequestException();
        }

        if (userService.isInBLAny(uid, visitor.getUid())) {
            throw new HttpForbiddenException();
        }

        if (pmQueriesService.createPM(visitor.getUid(), uid, body)) {
            if (webApp.getXmpp() != 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);
                webApp.getXmpp().send(msg);

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

                List<String> jids = userService.getJIDsbyUID(uid);
                for (String jid : jids) {
                    Message mm = new Message();
                    mm.setTo(Jid.of(jid));
                    mm.setType(Message.Type.CHAT);
                    if (pmQueriesService.havePMinRoster(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);
                    }
                    webApp.getXmpp().send(mm);
                }
            } else {
                logger.warn("XMPP unavailable");
            }
            return "redirect:/pm/sent";
        } else {
            throw new HttpBadRequestException();
        }
    }
}