/**  
* @Title: App.java 
* @Description:
* @Copyright: Copyright (c) 2019
* @author: Su.Yuanlin  
* @date 2019年2月12日  
* @QQ 314078331  
* @Like 流水落花春去也，天上人间
*/
package com.xiaoc.down_qq_music;

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import com.alibaba.druid.support.json.JSONParser;

import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSON;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONUtil;

public class App {

	public static final String __LIST = "list";
	public static final String __SONG = "song";
	public static final String __TAB = "tab";
	public static final String __SINGER = "singer";
	public static final String __NAME = "name";
	public static final String __SONGNAME = "songname";
	public static final String __SONGMID = "songmid";
	public static final String __MP3_L = "mp3_l";
	public static final String __MID = "mid";

	public static final String QUERY_MUSIC_URL = "https://c.y.qq.com/soso/fcgi-bin/client_search_cp?&t=0&aggr=1&cr=1&catZhida=1&lossless=0&flag_qc=0&p=1&n=20&w=";
	public static final String DOWNURL = "http://www.douqq.com/qqmusic/qqapi.php";

	public static String getSeachData(String keyWord) {
		String url = QUERY_MUSIC_URL + keyWord;
		String resultStr = HttpUtil.get(url);
		int begin = resultStr.indexOf(__SONG) + 6;
		int end = resultStr.indexOf(__TAB) - 2;
		return resultStr.substring(begin, end);
	}

	public static Map<Integer, String> getMusicDic(JSONArray jsonArrayData) {
		Map<Integer, String> sonmidMap = new HashMap<Integer, String>();
		// 将音乐放入map，提供下载选择
		for (int i = 0; i < jsonArrayData.size(); i++) {
			JSON jsonObject = JSONUtil.parse(jsonArrayData.get(i));
			JSONArray jsonArray = new JSONArray(jsonObject.getByPath(__SINGER));
			Object songName = JSONUtil.parse(jsonArray.get(0)).getByPath(__NAME);
			System.out.println(i + "---------" + jsonObject.getByPath(__SONGNAME) + "------" + songName.toString());
			sonmidMap.put(i, jsonObject.getByPath(__SONGMID).toString());
		}
		return sonmidMap;
	}

	public static String getDownLoadUrl(Map<Integer, String> musicDicMap, int order) {
		String post = HttpUtil.post(DOWNURL, "mid=" + musicDicMap.get(order).toString());
		JSONParser jsp = new JSONParser(post);
		Object byPath2 = JSONUtil.parse(jsp.parse()).getByPath(__MP3_L);
		System.out.println(byPath2);
		return byPath2.toString();
	}

	public static void main(String[] args) {
		System.out.print("请输入歌曲名称：");
		String _keyWord = new Scanner(System.in).nextLine();

		String jsonData = getSeachData(_keyWord);

		// System.out.println(jsonData);

		JSON objectJsonData = JSONUtil.parse(jsonData);

		Object listJsonData = objectJsonData.getByPath(__LIST);
		JSON listJson = JSONUtil.parse(listJsonData);
		JSONArray jsonArrayData = new JSONArray(listJson);

		Map<Integer, String> sonmidMap = getMusicDic(jsonArrayData);

		System.out.print("请输入歌曲编号：");
		int nextInt = new Scanner(System.in).nextInt();

		String downLoadUrl = getDownLoadUrl(sonmidMap, nextInt);
		System.out.println("请用浏览器打开，如果是H5播放页面，则点击播放页面省略号中的下载按钮即可");
		System.out.println(downLoadUrl);
	}
}