/*
 * Copyright (C) 2008-2024, 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.service;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.scribejava.apis.TwitterApi20;
import com.github.scribejava.core.builder.ServiceBuilder;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Response;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;
import com.juick.model.Message;
import com.juick.util.MessageUtils;
import jakarta.annotation.PostConstruct;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;

import javax.inject.Inject;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

@Service
public class TwitterService {
    private static final Logger logger = LoggerFactory.getLogger("Twitter");
    @Value("${twitter_client_id:12345678}")
    private String clientId;
    @Value("${twitter_client_secret:secret}")
    private String clientSecret;
    private static final String redirectUri = "https://juick.com/_twitter";
    @Inject
    private UserService userService;
    private OAuth20Service twitterAuthService;

    @Inject
    private ObjectMapper jsonMapper;

    @PostConstruct
    public void init() {
        ServiceBuilder twitterBuilder = new ServiceBuilder(clientId);
        setTwitterAuthService(twitterBuilder.apiSecret(clientSecret)
                .defaultScope("tweet.read tweet.write users.read offline.access")
                .callback(redirectUri)
                .build(TwitterApi20.instance()));
    }

    public void twitterPost(final Message jmsg) {
        userService.getTwitterToken(jmsg.getUser().getUid()).ifPresent(t -> {
            String status = MessageUtils.getMessageHashTags(jmsg) + StringUtils.defaultString(jmsg.getText());
            if (status.length() > 253) {
                status = StringUtils.abbreviate(status, "…", 252);
            }
            status += " http://juick.com/" + jmsg.getMid();
            try {
                var token = twitterAuthService.refreshAccessToken(t.secret());
                userService.refreshTwitterToken(jmsg.getUser(), token.getAccessToken(), token.getRefreshToken());
                OAuthRequest postRequest = new OAuthRequest(Verb.POST,
                        "https://api.twitter.com/2/tweets");
                var body = jsonMapper.createObjectNode();
                body.put("text", status);
                postRequest.addHeader("Content-Type", MediaType.APPLICATION_JSON_VALUE);
                postRequest.setPayload(jsonMapper.writeValueAsString(body));
                twitterAuthService.signRequest(token, postRequest);
                try (Response twitterResponse = twitterAuthService.execute(postRequest)) {
                    if (twitterResponse.isSuccessful()) {
                        logger.info(twitterResponse.getBody());
                    } else {
                        logger.warn("Twitter error {}: {}", twitterResponse.getCode(), twitterResponse.getBody());
                    }
                } catch (Exception e) {
                    logger.error("Twitter exception {}", jmsg.getUser().getName(), e);
                }
            } catch (IOException | InterruptedException | ExecutionException e) {
                logger.error("Twitter exception {}", jmsg.getUser().getName(), e);
            }
        });
    }

    public OAuth20Service getTwitterAuthService() {
        return twitterAuthService;
    }

    public void setTwitterAuthService(OAuth20Service twitterAuthService) {
        this.twitterAuthService = twitterAuthService;
    }
}