package com.bokecc.livemodule.view.subtitle;

import android.util.Log;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 字幕处理类
 *
 * @author 获得场景视频
 */
public class Subtitle {

    private final String REG = "\\d+\\r\\n(\\d{2}:\\d{2}:\\d{2},\\d{3}) --> (\\d{2}:\\d{2}:\\d{2},\\d{3})\\r\\n(.*?)\\r\\n\\r\\n";

    private int start;
    private int end;
    private String content;

    private List<Subtitle> subtitles;

    /**
     * 字幕初始化监听器
     */
    public interface OnSubtitleInitedListener {

        public void onInited(Subtitle subtitle);
    }

    private OnSubtitleInitedListener onSubtitleInitedListener;

    private Subtitle() {
    }

    public Subtitle(OnSubtitleInitedListener onSubtitleInitedListener) {
        this.onSubtitleInitedListener = onSubtitleInitedListener;
        this.subtitles = new ArrayList<Subtitle>();
    }

    public int getStart() {
        return start;
    }

    public void setStart(int start) {
        this.start = start;
    }

    public int getEnd() {
        return end;
    }

    public void setEnd(int end) {
        this.end = end;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public void setResource() {

    }

    public void initSubtitleResource(final String subtitleUrl) {
        new Thread(){
            @Override
            public void run() {
                HttpURLConnection connection = null;
                BufferedReader reader = null;

                try {
                    URL url = new URL(subtitleUrl);
                    connection = (HttpURLConnection) url.openConnection();
                    //设置请求方法
                    connection.setRequestMethod("GET");
                    //设置连接超时时间（毫秒）
                    connection.setConnectTimeout(5000);
                    //设置读取超时时间（毫秒）
                    connection.setReadTimeout(5000);
                    //返回输入流
                    InputStream in = connection.getInputStream();
                    //读取输入流
                    reader = new BufferedReader(new InputStreamReader(in));
                    StringBuilder sb = new StringBuilder();
                    String line;
                    while ((line = reader.readLine()) != null) {
                        sb.append(line + "\r\n");
                    }
                    String result = sb.toString();
                    parseSubtitleStr(result);
                } catch (Exception e) {
                    Log.e("CCVideoViewDemo", "" + e.getMessage());
                } finally {
                    if (reader != null) {
                        try {
                            reader.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    if (connection != null) {
                        connection.disconnect();
                    }
                }
            }
        }.start();
    }

    public void initOfflineSubtitleResource(final String subtitlePath) {
        new Thread(){
            @Override
            public void run() {
                File subtitleFile = new File(subtitlePath);
                BufferedReader reader = null;
                FileInputStream in = null;
                try {
                    in = new FileInputStream(subtitleFile);
                    reader = new BufferedReader(new InputStreamReader(in));
                    StringBuilder sb = new StringBuilder();
                    String line;
                    while ((line = reader.readLine()) != null) {
                        sb.append(line).append("\r\n");
                    }
                    String result = sb.toString();
                    parseSubtitleStr(result);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    if (reader != null) {
                        try {
                            reader.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                    if (in != null) {
                        try {
                            in.close();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }.start();
    }

    public String getSubtitleByTime(long time) {
        Iterator<Subtitle> iterator = subtitles.iterator();
        while (iterator.hasNext()) {
            Subtitle entry = iterator.next();
            if (entry.getStart() <= time && time <= entry.getEnd()) {
                return entry.getContent();
            }
        }
        return "";
    }

    private void parseSubtitleStr(String results) {
        Pattern pattern = Pattern.compile(REG, Pattern.DOTALL);
        Matcher matcher = pattern.matcher(results);
        while (matcher.find()) {
            Subtitle subtitle = new Subtitle();
            subtitle.setStart(parseTime(matcher.group(1)));
            subtitle.setEnd(parseTime(matcher.group(2)));
            subtitle.setContent(matcher.group(3));
            subtitles.add(subtitle);
        }
        onSubtitleInitedListener.onInited(this);
    }

    private int parseTime(String timeStr) {
        int nReturn = 0;
        String[] times = timeStr.split(",");
        int nMs = Integer.parseInt(times[1]);
        String[] time = times[0].split(":");
        int nH = Integer.parseInt(time[0]);
        int nM = Integer.parseInt(time[1]);
        int nS = Integer.parseInt(time[2]);
        nReturn += nS * 1000;
        nReturn += nM * 60 * 1000;
        nReturn += nH * 60 * 60 * 1000;
        nReturn += nMs;
        return nReturn;
    }
}
