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package com.juick.www.controllers;

import com.juick.Message;
import com.juick.User;
import com.juick.service.MessagesService;
import com.juick.service.TagService;
import com.juick.service.UserService;
import com.juick.util.UserUtils;
import com.juick.www.util.EncodeUtils;
import org.apache.commons.lang3.CharEncoding;
import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
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 javax.inject.Inject;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

/**
 * Created by aalexeev on 11/21/16.
 */
@Controller
public class IndexController {
    @Inject
    private MessageSource messageSource;
    @Inject
    private UserService userService;
    @Inject
    private MessagesService messagesService;
    @Inject
    private TagService tagService;

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String indexPage(
            @RequestParam("show") Optional<String> paramShow,
            @RequestParam("tag") Optional<String> paramTagStr,
            @RequestParam(value = "before") Optional<Integer> paramBefore,
            @RequestParam(value = "search", required = false) String paramSearch,
            ModelMap model) throws IOException {

        if (paramTagStr.isPresent())
            return "redirect:/tag/" + URLEncoder.encode(paramTagStr.get(), CharEncoding.UTF_8);

        if (StringUtils.isNotEmpty(paramSearch) && paramSearch.length() > 64)
            paramSearch = "";

        User visitor = UserUtils.getCurrentUser();

        String title = "";

        int before = paramBefore.orElse(0);

        List<Integer> mids = new ArrayList<>();

        if (StringUtils.isNotEmpty(paramSearch)) {
            title = "Поиск: " + StringEscapeUtils.escapeHtml4(paramSearch);
            mids = messagesService.getSearch(EncodeUtils.encodeSphinx(paramSearch),
                    before);
        } else if (!paramShow.isPresent()) {
            mids = messagesService.getPopular(visitor.getUid(), before);
        } else if (paramShow.get().equals("top")) {
            return "redirect:/";
        } else if (paramShow.get().equals("my") && visitor.getUid() > 0) {
            title = "Моя лента";
            mids = messagesService.getMyFeed(visitor.getUid(), before);
        } else if (paramShow.get().equals("private") && visitor.getUid() > 0) {
            title = "Приватные";
            mids = messagesService.getPrivate(visitor.getUid(), before);
        } else if (paramShow.get().equals("discuss") && visitor.getUid() > 0) {
            title = "Обсуждения";
            mids = messagesService.getDiscussions(visitor.getUid(), before);
        } else if (paramShow.get().equals("recommended") && visitor.getUid() > 0) {
            title = "Рекомендации";
            mids = messagesService.getRecommended(visitor.getUid(), before);
        } else if (paramShow.get().equals("photos")) {
            title = "Фотографии";
            mids = messagesService.getPhotos(visitor.getUid(), before);
        } else if (paramShow.get().equals("all")) {
            title = "Все сообщения";
            mids = messagesService.getAll(visitor.getUid(), before);
        }
        model.addAttribute("title", title);
        model.addAttribute("tags", tagService.getPopularTags());
        List<Message> msgs = messagesService.getMessages(mids);
        List<Integer> blUIDs = userService.checkBL(visitor.getUid(),
                msgs.stream().map(m -> m.getUser().getUid()).collect(Collectors.toList()));
        model.addAttribute("msgs",
                msgs.stream().map(msg -> {
                    msg.ReadOnly |= blUIDs.contains(msg.getUser().getUid());
                    if (msg.ReadOnly) {
                        msg.ReadOnly = visitor.getUid() != msg.getUser().getUid();
                    }
                    return msg;
                }).collect(Collectors.toList())
        );
        if (mids.size() >= 20) {
            String nextpage = "?before=" + mids.get(mids.size() - 1);
            if (paramShow.isPresent()) {
                nextpage += "&show=" + paramShow.get();
            }
            if (StringUtils.isNotEmpty(paramSearch)) {
                nextpage += "&search=" + paramSearch;
            }
            model.addAttribute("nextpage", nextpage);
        }
        return "views/index";
    }

    @RequestMapping(value = "/login", method = RequestMethod.GET)
    public String getLoginForm() {
        return "views/login";
    }

    @RequestMapping(value = "/login-error", method = RequestMethod.GET)
    public String getLoginErrorForm(Model model) {
        model.addAttribute("loginError", true);
        return "views/login";
    }
}