/*
 * <Alice LiveMan>
 * Copyright (C) <2018>  <NekoSunflower>
 *
 * 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 <https://www.gnu.org/licenses/>.
 */
package site.alice.liveman.service.live.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.springframework.stereotype.Service;
import site.alice.liveman.model.ChannelInfo;
import site.alice.liveman.model.VideoInfo;
import site.alice.liveman.service.live.LiveService;
import site.alice.liveman.utils.HttpRequestUtil;

import java.net.URI;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Collections;

@Service
public class MirrativLiveService extends LiveService {

    private static final String GET_LIVE_INFO_URL = "https://www.mirrativ.com/live/";

    @Override
    public URI getLiveVideoInfoUrl(ChannelInfo channelInfo) throws Exception {
        String channelUrl = channelInfo.getChannelUrl();
        String userId = channelUrl.replace("https://www.mirrativ.com/user/", "").replace("/", "");
        URI liveHistoryUrl = new URI("https://www.mirrativ.com/api/live/live_history?user_id=" + userId + "&page=1");
        String liveHistoryJson = HttpRequestUtil.downloadUrl(liveHistoryUrl, channelInfo != null ? channelInfo.getCookies() : null, Collections.emptyMap(), StandardCharsets.UTF_8);
        JSONObject liveHistory = JSON.parseObject(liveHistoryJson);
        JSONArray lives = liveHistory.getJSONArray("lives");
        if (!lives.isEmpty()) {
            JSONObject liveObj = lives.getJSONObject(0);
            if (liveObj.getBoolean("is_live")) {
                String videoId = liveObj.getString("live_id");
                return new URI(GET_LIVE_INFO_URL + videoId);
            }
        }
        return null;
    }

    @Override
    public VideoInfo getLiveVideoInfo(URI videoInfoUrl, ChannelInfo channelInfo,String resolution) throws Exception {
        if (videoInfoUrl == null) {
            return null;
        }
        String videoId = videoInfoUrl.toString().substring(GET_LIVE_INFO_URL.length());
        String liveDetailJson = HttpRequestUtil.downloadUrl(new URI("https://www.mirrativ.com/api/live/live?live_id=" + videoId), channelInfo != null ? channelInfo.getCookies() : null, Collections.emptyMap(), StandardCharsets.UTF_8);
        JSONObject liveDetailObj = JSON.parseObject(liveDetailJson);
        String videoTitle = liveDetailObj.getString("title");
        URI m3u8ListUrl = new URI(liveDetailObj.getString("streaming_url_hls"));
        String[] m3u8List = HttpRequestUtil.downloadUrl(m3u8ListUrl, StandardCharsets.UTF_8).split("\n");
        String mediaUrl = m3u8List[3];
        return new VideoInfo(channelInfo, videoId, videoTitle, videoInfoUrl, m3u8ListUrl.resolve(mediaUrl), "m3u8");
    }

    @Override
    public boolean isMatch(URI channelUrl) {
        return channelUrl.getHost().contains("mirrativ.com");
    }
}