package com.juick.www.controllers;

import com.juick.User;
import com.juick.server.helpers.NotifyOpts;
import com.juick.server.helpers.UserInfo;
import com.juick.server.util.HttpBadRequestException;
import com.juick.server.util.HttpForbiddenException;
import com.juick.server.util.HttpUtils;
import com.juick.service.*;
import com.juick.util.UserUtils;
import net.coobird.thumbnailator.Thumbnails;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.env.Environment;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

import javax.inject.Inject;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

/**
 * Created by aalexeev on 11/21/16.
 */
@Controller
public class SettingsController {
    private static final Logger logger = LoggerFactory.getLogger(SettingsController.class);
    @Inject
    UserService userService;
    @Inject
    TagService tagService;
    @Inject
    CrosspostService crosspostService;
    @Inject
    SubscriptionService subscriptionService;
    @Inject
    EmailService emailService;
    @Inject
    TelegramService telegramService;
    @Inject
    Environment env;

    @RequestMapping(value = "settings", method = RequestMethod.GET)
    public String showSettings(
            @RequestParam(required = false) String page,
            @RequestParam(required = false) String code,
            ModelMap context) {
        User visitor = UserUtils.getCurrentUser();
        if (visitor.getUid() == 0) {
            return "redirect:/login";
        }
        List<String> pages = Arrays.asList("main", "password", "about", "auth-email", "privacy");
        if (StringUtils.isEmpty(page) || !pages.contains(page)) {
            page = "main";
        }
        context.put("title", "Настройки");
        context.put("visitor", visitor);
        context.put("tags", tagService.getPopularTags());
        context.put("auths", userService.getAuthCodes(visitor));
        context.put("eopts", userService.getEmailOpts(visitor));
        context.put("ehash", userService.getEmailHash(visitor));
        context.put("emails", userService.getEmails(visitor));
        context.put("jids", userService.getAllJIDs(visitor));
        List<String> hours = IntStream.rangeClosed(0, 23).boxed()
                .map(i -> StringUtils.leftPad(String.format("%d", i), 2, "0")).collect(Collectors.toList());
        context.put("hours", hours);
        context.put("fbstatus", crosspostService.getFbCrossPostStatus(visitor.getUid()));
        context.put("twitter_name", crosspostService.getTwitterName(visitor.getUid()));
        context.put("telegram_name", crosspostService.getTelegramName(visitor.getUid()));
        context.put("notify_options", subscriptionService.getNotifyOptions(visitor));
        context.put("userinfo", userService.getUserInfo(visitor));
        if (page.equals("auth-email")) {
            String response = emailService.verifyAddressByCode(visitor.getUid(), code) ?
                    "OK!" : "Sorry, code unknown.";
            context.put("result", response);
        }
        return String.format("views/settings_%s", page);
    }
    @RequestMapping(value = "/settings", method = RequestMethod.POST)
    protected String doPost(
            HttpServletResponse response,
            @RequestParam String page,
            @RequestParam(required = false) String password,
            @RequestParam(required = false) String jnotify,
            @RequestParam(required = false) String subscr_notify,
            @RequestParam(required = false) String recomm,
            @RequestParam(required = false) String fullname,
            @RequestParam(required = false) String country,
            @RequestParam(required = false) String url,
            @RequestParam(required = false) String descr,
            @RequestParam(required = false) MultipartFile avatar,
            @RequestParam(required = false) String account,
            @RequestParam(required = false) String time,
            ModelMap context) throws IOException {
        User visitor = UserUtils.getCurrentUser();
        if (visitor.getUid() == 0) {
            throw new HttpForbiddenException();
        }
        List<String> pages = Arrays.asList("main", "password", "about", "email", "email-add", "email-del",
                "email-subscr", "auth-email", "privacy", "jid-del", "twitter-del", "telegram-del", "facebook-disable",
                "facebook-enable", "vk-del");
        if (StringUtils.isEmpty(page) || !pages.contains(page)) {
            throw new HttpBadRequestException();
        }
        String result = "";
        switch (page) {
            case "password":
                if (userService.updatePassword(visitor, password)) {
                    result = "<p>Password has been changed.</p>";
                    String hash = userService.getHashByUID(visitor.getUid());
                    Cookie c = new Cookie("hash", hash);
                    c.setMaxAge(365 * 24 * 60 * 60);
                    // FIXME: use spring-security
                    response.addCookie(c);
                }
                break;
            case "main":
                NotifyOpts opts = new NotifyOpts();
                opts.setRepliesEnabled(StringUtils.isNotEmpty(jnotify));
                opts.setSubscriptionsEnabled(StringUtils.isNotEmpty(subscr_notify));
                opts.setRecommendationsEnabled(StringUtils.isNotEmpty(recomm));
                if (subscriptionService.setNotifyOptions(visitor, opts)) {
                    result = "<p>Notification options has been updated</p>";
                }
                break;
            case "about":
                UserInfo info = new UserInfo();
                info.setFullName(fullname);
                info.setCountry(country);
                info.setUrl(url);
                info.setDescription(descr);
                String imgPath = env.getProperty("img_path", "/var/www/juick.com/i/");
                String tmpDir = env.getProperty("upload_tmp_dir",
                        "/var/www/juick.com/i/tmp/");
                String avatarTmpPath = HttpUtils.receiveMultiPartFile(avatar, tmpDir);
                if (StringUtils.isNotEmpty(avatarTmpPath)) {
                    String originalExtension = FilenameUtils.getExtension(avatarTmpPath);
                    String originalName = String.format("%s.%s", visitor.getUid(), originalExtension);
                    String targetName = String.format("%s.png", visitor.getUid());
                    Path ao = Paths.get(imgPath, "ao", originalName);
                    Path a = Paths.get(imgPath, "a", targetName);
                    Path as = Paths.get(imgPath, "as", targetName);
                    Files.move(Paths.get(tmpDir, avatarTmpPath), ao, StandardCopyOption.REPLACE_EXISTING);
                    Thumbnails.of(ao.toFile()).size(96, 96).toFile(a.toFile());
                    Thumbnails.of(ao.toFile()).size(32, 32).toFile(as.toFile());
                }
                if (userService.updateUserInfo(visitor, info)) {
                    result = String.format("<p>Your info is updated.</p><p><a href='/%s/'>Back to blog</a>.</p>", visitor.getName());
                }
                break;
            case "jid-del":
                // FIXME: stop using ugnich-csv in parameters
//                String[] params = request.getParameter("delete").split(";", 2);
//                int res = -1;
//                if (params[0].equals("xmpp")) {
//                    res = sql.update("DELETE FROM jids WHERE user_id=? AND jid=?", visitor.getUid(), params[1]);
//                } else if (params[0].equals("xmpp-unauth")) {
//                    res = sql.update("DELETE FROM auth WHERE user_id=? AND protocol='xmpp' AND account=?", visitor.getUid(), params[1]);
//                }
//                if (res == 1) {
//                    result = "<p>Deleted. <a href=\"/settings\">Back</a>.</p>";
//                } else {
//                    result = "<p>Error</p>";
//                }
                break;
            case "email":
                String newHash = userService.updateSecretEmail(visitor);
                if (StringUtils.isNotEmpty(newHash)) {
                    result = String.format("<p>New secret email: <strong>%s@mail.juick.com</strong></p>" +
                            "<p><a href=\"/settings\">Back</a>.</p>", newHash);
                } else {
                    throw new HttpBadRequestException();
                }
                break;
            case "email-add":
                try {
                    emailService.verifyAddressByCode(visitor.getUid(), account);
                } catch (EmptyResultDataAccessException e) {
                    String authCode = UserUtils.generateHash(8);
                    if (emailService.addVerificationCode(visitor.getUid(), account, authCode)) {
                        Session session = Session.getDefaultInstance(System.getProperties());
                        try {
                            MimeMessage message = new MimeMessage(session);
                            message.setFrom(new InternetAddress("noreply@mail.juick.com"));
                            message.addRecipient(Message.RecipientType.TO, new InternetAddress(account));
                            message.setSubject("Juick authorization link");
                            message.setText(String.format("Follow link to attach this email to Juick account:\n" +
                                    "http://juick.com/settings?page=auth-email&code=%s\n\n" +
                                    "If you don't know, what this mean - just ignore this mail.\n", authCode));
                            Transport.send(message);
                            result = "<p>Authorization link has been sent to your email. Follow it to proceed.</p>" +
                                    "<p><a href=\"/settings\">Back</a></p>";

                        } catch (MessagingException ex) {
                            logger.error("mail exception", ex);
                            throw new HttpBadRequestException();
                        }
                    }
                }
                break;
            case "email-del":
                if (emailService.deleteEmail(visitor.getUid(), account)) {
                    result = "<p>Deleted. <a href=\"/settings\">Back</a>.</p>";
                } else {
                    result = "<p>An error occured while deleting.</p>";
                }
                break;
            case "email-subscr":
                if (emailService.setSubscriptionHour(visitor.getUid(), account, time)) {
                    result = String.format("<p>Saved! Will send to <strong>%s</strong> at <strong>%s:00 GMT</strong>." +
                            "</p><p><a href=\"/settings\">Back</a></p>", account, time);
                } else {
                    result = "<p>Disabled.</p><p><a href=\"/settings\">Back</a></p>";
                }
                break;
            case "twitter-del":
                crosspostService.deleteTwitterToken(visitor.getUid());
                // FIXME: use spring-security
//                for (Cookie cookie : request.getCookies()) {
//                    if (cookie.getName().equals("request_token")) {
//                        cookie.setMaxAge(0);
//                        response.addCookie(cookie);
//                    }
//                    if (cookie.getName().equals("request_token_secret")) {
//                        cookie.setMaxAge(0);
//                        response.addCookie(cookie);
//                    }
//                }
                result = "<p><a href=\"/settings\">Back</a></p>";
                break;
            case "telegram-del":
                telegramService.deleteTelegramUser(visitor.getUid());
                result = "<p><a href=\"/settings\">Back</a></p>";
                break;
            case "facebook-disable":
                crosspostService.disableFBCrosspost(visitor.getUid());
                result = "<p><a href=\"/settings\">Back</a></p>";
                break;
            case "facebook-enable":
                crosspostService.enableFBCrosspost(visitor.getUid());
                result = "<p><a href=\"/settings\">Back</a></p>";
                break;
            case "vk-del":
                crosspostService.deleteVKUser(visitor.getUid());
                result = "<p><a href=\"/settings\">Back</a></p>";
                break;
            default:
                throw new HttpBadRequestException();
        }
        context.put("title", "Настройки");
        context.put("visitor", visitor);
        context.put("result", result);
        return "views/settings_result";
    }
}