package com.guangzhou.haochuan.jxtv.util;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Looper;
import android.util.Log;

import com.guangzhou.haochuan.jxtv.viewModel.ErrorDataViewModel;
import com.ystgame.sdk.billing.api.GameInterface;

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by yunhaipiaodi on 2017/10/24.
 */

public class CrashHandler implements Thread.UncaughtExceptionHandler {
    public static final String TAG = "CrashHandler";

    //系统默认的UncaughtException处理类
    private Thread.UncaughtExceptionHandler mDefaultHandler;
    //CrashHandler实例
    private static CrashHandler INSTANCE = new CrashHandler();
    //程序的Context对象
    private Context mContext;
    //用来存储设备信息和异常信息
    private Map<String, String> infos = new HashMap<String, String>();

    //用于格式化日期,作为日志文件名的一部分
    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

    /** 保证只有一个CrashHandler实例 */
    private CrashHandler() {
    }

    /** 获取CrashHandler实例 ,单例模式 */
    public static CrashHandler getInstance() {
        return INSTANCE;
    }

    /**
     * 初始化
     *
     * @param context
     */
    public void init(Context context) {
        mContext = context;
        //获取系统默认的UncaughtException处理器
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        //设置该CrashHandler为程序的默认处理器
        Thread.setDefaultUncaughtExceptionHandler(this);
    }

    private String  getImei(){
        /*TelephonyManager mTm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
        return mTm.getDeviceId();*/
        return "";
    }

    private String  getModel(){
        return Build.MODEL;
    }

    private int getAndroidVersion(){
        return Build.VERSION.SDK_INT;
    }


    /**
     * 当UncaughtException发生时会转入该函数来处理
     */
    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        if (!handleException(ex) && mDefaultHandler != null) {
            //如果用户没有处理则让系统默认的异常处理器来处理
            mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                Log.e(TAG, "error : ", e);
            }
            //退出程序
            android.os.Process.killProcess(android.os.Process.myPid());
            GameInterface.finishAllDialog();
            System.exit(0);
        }
    }

    /**
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
     *
     * @param ex
     * @return true:如果处理了该异常信息;否则返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        }
        //使用Toast来显示异常信息
        new Thread() {
            @Override
            public void run() {
                Looper.prepare();
                //Toast.makeText(mContext, "很抱歉,程序出现异常", Toast.LENGTH_LONG).show();
                Looper.loop();
            }
        }.start();
        //收集设备参数信息
        collectDeviceInfo(mContext);
       //保存日志文件
        saveCrashInfo2File(ex);


       //保存错误信息到后台云端
        saveCrashInfoToWeb(ex);
        return true;
    }

    /**
     * 收集设备参数信息
     * @param ctx
     */
    public void collectDeviceInfo(Context ctx) {
        try {
            PackageManager pm = ctx.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
            if (pi != null) {
                String versionName = pi.versionName == null ? "null" : pi.versionName;
                String versionCode = pi.versionCode + "";
                infos.put("versionName", versionName);
                infos.put("versionCode", versionCode);
            }
            infos.put("apiLevel",String.valueOf(Build.VERSION.SDK_INT));
        } catch (PackageManager.NameNotFoundException e) {
           // Log.e(TAG, "an error occured when collect package info", e);
        }
        Field[] fields = Build.class.getDeclaredFields();
        for (Field field : fields) {
            try {
                field.setAccessible(true);
                infos.put(field.getName(), field.get(null).toString());
                //Log.d(TAG, field.getName() + " : " + field.get(null));
            } catch (Exception e) {
                //Log.e(TAG, "an error occured when collect crash info", e);
            }
        }
    }

    /**
     * 保存错误信息到后台云端
     *
     */

    private void saveCrashInfoToWeb(Throwable ex){
        String cpuAbi = "";
        String cpuAbi2 = "";
        String versionName = "";
        String versionCode = "";
        String apiLevel = "";
        String errorMessage = "";
        String ramSize = ""; //内存大小

        ramSize = getTotalRam(mContext);
        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();

            if(key.equals("CPU_ABI")){
                cpuAbi = value;
            }else if(key.equals("CPU_ABI2")){
                cpuAbi2 = value;
            }
            else if(key.equals("versionName")){
                versionName = value;
            }
            else if(key.equals("versionCode")){
                versionCode = value;
            }
            else if(key.equals("apiLevel")){
                apiLevel = value;
            }
        }

        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = writer.toString();

        if(result.contains("android.os.TransactionTooLargeException" ) || result.contains("pthread_create")
                || result.contains("Duplicate key in ArrayMap") || result.contains("NullPointerException")){
            return;
        }

        new ErrorDataViewModel(cpuAbi,cpuAbi2,versionName,versionCode,apiLevel,result,ramSize);
    }

    public void saveCrashInfoToWeb(String msg){
        String cpuAbi = "";
        String cpuAbi2 = "";
        String versionName = "";
        String versionCode = "";
        String apiLevel = "";
        String errorMessage = "";
        String ramSize = ""; //内存大小
        collectDeviceInfo(mContext);
        ramSize = getTotalRam(mContext);

        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();

            if(key.equals("CPU_ABI")){
                cpuAbi = value;
            }else if(key.equals("CPU_ABI2")){
                cpuAbi2 = value;
            }
            else if(key.equals("versionName")){
                versionName = value;
            }
            else if(key.equals("versionCode")){
                versionCode = value;
            }
            else if(key.equals("apiLevel")){
                apiLevel = value;
            }
        }

        String result = msg;

        if(result.contains("android.os.TransactionTooLargeException" ) || result.contains("pthread_create")
                || result.contains("Duplicate key in ArrayMap") || result.contains("NullPointerException")){
            return;
        }

        new ErrorDataViewModel(cpuAbi,cpuAbi2,versionName,versionCode,apiLevel,result,ramSize);
    }


    //返回内存大小 GB
    public  String getTotalRam(Context context){
        String path = "/proc/meminfo";
        String firstLine = null;
        int totalRam = 0 ;
        try{
            FileReader fileReader = new FileReader(path);
            BufferedReader br = new BufferedReader(fileReader,8192);
            firstLine = br.readLine().split("\\s+")[1];
            br.close();
        }catch (Exception e){
            e.printStackTrace();
        }
        if(firstLine != null){
            totalRam = (int)Math.ceil((new Float(Float.valueOf(firstLine) / (1024 * 1024)).doubleValue()));
        }

        return totalRam + "GB";//返回1GB/2GB/3GB/4GB
    }

    /**
     * 保存错误信息到文件中
     *
     * @param ex
     * @return  返回文件名称,便于将文件传送到服务器
     */
    private String saveCrashInfo2File(Throwable ex) {

        StringBuffer sb = new StringBuffer();
        for (Map.Entry<String, String> entry : infos.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            sb.append(key + "=" + value + "\n");
        }

        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = writer.toString();
        sb.append(result);
        try {
            long timestamp = System.currentTimeMillis();
            String time = formatter.format(new Date());
            String fileName = "crash-" + time + "-" + timestamp + ".log";
            String path = mContext.getExternalCacheDir().getAbsolutePath();
            FileOutputStream fos = new FileOutputStream(path + fileName);
            fos.write(sb.toString().getBytes());
            fos.close();
            return fileName;
        } catch (Exception e) {
            Log.e(TAG, "an error occured while writing file...", e);
        }
        return null;
    }
}