package com.juick.api.controllers;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.juick.Message;
import com.juick.User;
import com.juick.api.util.HttpBadRequestException;
import com.juick.api.util.HttpForbiddenException;
import com.juick.server.helpers.Status;
import com.juick.server.helpers.TokensList;
import com.juick.service.MessagesService;
import com.juick.service.PushQueriesService;
import com.juick.service.SubscriptionService;
import com.juick.service.UserService;
import org.apache.commons.lang3.math.NumberUtils;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

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

/**
 * Created by vitalyster on 24.10.2016.
 */
@Controller
@ResponseBody
public class Notifications {

    @Inject
    PushQueriesService pushQueriesService;
    @Inject
    UserService userService;
    @Inject
    MessagesService messagesService;
    @Inject
    SubscriptionService subscriptionService;

    @RequestMapping(value = "/notifications", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public List<String> doGet(HttpServletRequest request) {
        String auth = request.getHeader("Authorization");
        int vuid = userService.getUIDByHttpAuth(auth);
        if (vuid == -1) {
            throw new HttpForbiddenException();
        }
        if (vuid == 0) {
            String hash = request.getParameter("hash");
            if (hash != null && hash.length() == 16) {
                vuid  = userService.getUIDbyHash(hash);
            }
        }
        if (vuid == 0) {
            throw new HttpForbiddenException();
        }
        User visitor = userService.getUserByUID(vuid).orElse(new User());
        if ((visitor.getUid() == 0) || !(visitor.getName().equals("juick"))) {
            throw new HttpForbiddenException();
        }
        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":
                    return pushQueriesService.getAndroidRegID(uid);
                case "apns":
                    return pushQueriesService.getAPNSToken(uid);
                case "mpns":
                    return pushQueriesService.getWinPhoneURL(uid);
                default:
                    throw new HttpBadRequestException();
            }

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

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

                    switch (type) {
                        case "gcm":
                            return pushQueriesService.getAndroidTokens(uids);
                        case "apns":
                            return pushQueriesService.getAPNSTokens(uids);
                        case "mpns":
                            return pushQueriesService.getWindowsTokens(uids);
                        default:
                            throw new HttpBadRequestException();
                    }
                }
            }
        }
        throw new HttpBadRequestException();
    }

    @RequestMapping(value = "/notifications", method = RequestMethod.DELETE, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    public Status doDelete(HttpServletRequest request, @RequestBody String requestBody) throws IOException {
        // TODO: use spring-security
        String auth = request.getHeader("Authorization");
        int vuid = userService.getUIDByHttpAuth(auth);
        if (vuid == -1) {
            throw new HttpForbiddenException();
        }
        if (vuid == 0) {
            String hash = request.getParameter("hash");
            if (hash != null && hash.length() == 16) {
                vuid  = userService.getUIDbyHash(hash);
            }
        }
        if (vuid == 0) {
            throw new HttpForbiddenException();
        }
        User visitor = userService.getUserByUID(vuid).orElse(new User());
        if ((visitor.getUid() == 0) || !(visitor.getName().equals("juick"))) {
            throw new HttpForbiddenException();
        }
        ObjectMapper mapper = new ObjectMapper();
        mapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);
        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        mapper.setSerializationInclusion(JsonInclude.Include.NON_DEFAULT);
        TokensList list = mapper.readValue(requestBody, TokensList.class);
        list.getTokens().forEach(t -> pushQueriesService.deleteAPNSToken(t));
        return Status.OK;
    }
}