package com.cku.oa.groomer.utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.cku.core.ZAErrorCode;
import com.cku.util.DateUtils;
import com.cku.util.Debugger;
import com.cku.util.SysConfig;

public class VideoInfoService {
	private static String s_ffmpegPath = null;// "C:/ffmpeg/bin/ffmpeg.exe";

	// public static void main(String[] args) {
	// try {
	// String time =
	// getVideoTime("http://chongaibao.b0.upaiyun.com/cab_test/video/video/4839fc5e-d05f-4178-bb78-951509afc500.mp4");
	// System.out.println(time);
	// } catch (Exception e) {
	// // TODO Auto-generated catch block
	// e.printStackTrace();
	// }
	// }
	static {
		String toolDir = SysConfig.getInstance().getProperty("tool_dir");

		String os = System.getProperty("os.name");
		if (os.toLowerCase().startsWith("win")) {
			s_ffmpegPath = toolDir + File.separator + "ffmpeg.exe";
		} else {
			s_ffmpegPath = toolDir + File.separator + "ffmpeg";
		}
	}

	public static VideoInfo getVideoRes(String fPath) throws Exception {
		ProcessBuilder pb = new ProcessBuilder(s_ffmpegPath, "-analyzeduration", "50M", "-i", fPath);

		Process p = pb.start();

		int resultCode = p.waitFor();
		Debugger.doAssert(resultCode == 1, ZAErrorCode.ZA_ERC_3RD, "ffmpeg execution '%s' returns value %d", fPath,
				resultCode);
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(p.getErrorStream()));

		VideoInfo vi = new VideoInfo();

		while (true) {
			String s = bufferedReader.readLine();
			if (s == null) {
				break;
			}

			String[] splits = s.trim().split(" ");

			boolean streamFound = false, videoFound = false;
			boolean durationFound = false;
			for (int i = 0; i < splits.length; ++i) {
				String partition = splits[i].replace(',', ' ');
				partition = partition.trim();
				if (partition.equals("Stream"))
					streamFound = true;
				if (partition.equals("Video:"))
					videoFound = true;
				if (partition.equals("Duration:"))
					durationFound = true;

				String[] x = partition.split("x");
				if (x.length == 2 && streamFound && videoFound) {
					try {
						int x1 = Integer.parseInt(x[0]);
						int x2 = Integer.parseInt(x[1]);

						if (x1 > 0 && x1 <= 16384 && x2 > 0 && x2 <= 9216) {
							vi.vRes = x1 + "x" + x2;
						} else {
							/* Not a resolution property, Just ignore. */
							continue;
						}
					} catch (Exception e) {

					}
				}
			}

			if (durationFound) {
				String duration = splits[1];
				System.out.println(duration);
				Date dx = DateUtils.strToDate(duration, "HH:mm:ss.SS");

				Calendar c = Calendar.getInstance();
				c.setTime(dx);
				long time = 0;
				time = c.get(Calendar.HOUR);
				time = time * 60 + c.get(Calendar.MINUTE);
				time = time * 60 + c.get(Calendar.SECOND);
				time = time * 1000 + c.get(Calendar.MILLISECOND);

				vi.durationMS = time;
			}
		}

		Debugger.doAssert(vi.vRes != null && vi.durationMS != null, ZAErrorCode.ZA_ERC_PARAM_ERROR,
				"Can't find resolution or duration of file %s", fPath);

		return vi;
	}

	/**
	 * 获取视频总时间
	 * 
	 * @return
	 */
	public static String getVideoTime(String video_path) {
		List<String> commands = new java.util.ArrayList<String>();
		commands.add(s_ffmpegPath);
		commands.add("-i");
		commands.add(video_path);
		try {
			ProcessBuilder builder = new ProcessBuilder();
			builder.command(commands);
			final Process p = builder.start();

			// 从输入流中读取视频信息
			BufferedReader br = new BufferedReader(new InputStreamReader(p.getErrorStream()));
			StringBuffer sb = new StringBuffer();
			String line = "";
			while ((line = br.readLine()) != null) {
				sb.append(line);
			}
			br.close();

			// 从视频信息中解析时长
			String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";
			Pattern pattern = Pattern.compile(regexDuration);
			Matcher m = pattern.matcher(sb.toString());
			if (m.find()) {
				String time = m.group(1);
				System.out.println(video_path + "====" + time + ",视频时长：" + time.substring(3, time.length() - 3)
						+ ", 开始时间：" + m.group(2) + ",比特率：" + m.group(3) + "kb/s");
				return time.substring(3, time.length() - 3);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}

		return null;
	}

	// //格式:"00:00:10.68"
	// private static int getTimelen(String timelen){
	// int min=0;
	// String strs[] = timelen.split(":");
	// if (strs[0].compareTo("0") > 0) {
	// min+=Integer.valueOf(strs[0])*60*60;//秒
	// }
	// if(strs[1].compareTo("0")>0){
	// min+=Integer.valueOf(strs[1])*60;
	// }
	// if(strs[2].compareTo("0")>0){
	// min+=Math.round(Float.valueOf(strs[2]));
	// }
	// return min;
	// }
}