package com.juick.api;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.juick.Message;
import com.juick.User;
import com.juick.server.MessagesQueries;
import com.juick.server.PushQueries;
import com.juick.server.SubscriptionsQueries;
import com.juick.server.UserQueries;
import org.apache.commons.lang3.math.NumberUtils;
import org.springframework.jdbc.core.JdbcTemplate;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
import java.util.stream.Collectors;

/**
 * Created by vitalyster on 24.10.2016.
 */
public class Notifications {
    JdbcTemplate jdbc;
    ObjectMapper mapper = new ObjectMapper();

    public Notifications(JdbcTemplate jdbc) {
        this.jdbc = jdbc;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response, int vuid) throws IOException {
        User visitor = UserQueries.getUserByUID(jdbc, vuid).orElse(new User());
        if ((visitor.getUid() == 0) || !(visitor.getName().equals("juick"))) {
            response.sendError(403);
            return;
        }
        String type = request.getParameter("type");
        int uid = NumberUtils.toInt(request.getParameter("uid"), 0);
        int mid = NumberUtils.toInt(request.getParameter("mid"), 0);
        if (uid > 0) {
            switch (type) {
                case "gcm":
                    List<String> tokens = PushQueries.getAndroidRegID(jdbc, uid);
                    Main.replyJSON(request, response, mapper.writeValueAsString(tokens));
                case "apns":
                    List<String> apnsTokens = PushQueries.getAPNSToken(jdbc, uid);
                    Main.replyJSON(request, response, mapper.writeValueAsString(apnsTokens));
                case "mpns":
                    List<String> mpnsTokens = PushQueries.getWinPhoneURL(jdbc, uid);
                    Main.replyJSON(request, response, mapper.writeValueAsString(mpnsTokens));
                default:
                    response.sendError(400);
                    return;
            }

        } else {
            if (mid > 0) {
                Message msg = MessagesQueries.getMessage(jdbc, mid);
                if (msg != null) {
                    List<User> users;
                    if (msg.getRid() > 0) {
                        users = SubscriptionsQueries.getUsersSubscribedToComments(jdbc, mid, msg.getUser().getUid());
                    } else {
                        users = SubscriptionsQueries.getSubscribedUsers(jdbc, msg.getUser().getUid(), mid);
                    }

                    List<Integer> uids = users.stream().map(User::getUid).collect(Collectors.toList());

                    switch (type) {
                        case "gcm":
                            List<String> tokens = PushQueries.getAndroidTokens(jdbc, uids);
                            Main.replyJSON(request, response, mapper.writeValueAsString(tokens));
                        case "apns":
                            List<String> apnsTokens = PushQueries.getAPNSTokens(jdbc, uids);
                            Main.replyJSON(request, response, mapper.writeValueAsString(apnsTokens));
                        case "mpns":
                            List<String> mpnsTokens = PushQueries.getWindowsTokens(jdbc, uids);
                            Main.replyJSON(request, response, mapper.writeValueAsString(mpnsTokens));
                        default:
                            response.sendError(400);
                            return;
                    }
                }
            }
        }
        response.sendError(400);
    }
}