package cn.com.siyuan.eshop.weixinepay;


import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;


import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;


import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;


import junit.framework.Assert;


import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Bitmap.CompressFormat;
import android.util.Log;


public class WXUtil {

private static final String TAG = "SDK_Sample.Util";

public static byte[] bmpToByteArray(final Bitmap bmp, final boolean needRecycle) {
ByteArrayOutputStream output = new ByteArrayOutputStream();
bmp.compress(CompressFormat.PNG, 100, output);
if (needRecycle) {
bmp.recycle();
}

byte[] result = output.toByteArray();
try {
output.close();
} catch (Exception e) {
e.printStackTrace();
}

return result;
}


public static byte[] httpGet(final String url) {
if (url == null || url.length() == 0) {
Log.e(TAG, "httpGet, url is null");
return null;
}


HttpClient httpClient = getNewHttpClient();
HttpGet httpGet = new HttpGet(url);


try {
HttpResponse resp = httpClient.execute(httpGet);
if (resp.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
Log.e(TAG, "httpGet fail, status code = " + resp.getStatusLine().getStatusCode());
return null;
}


return EntityUtils.toByteArray(resp.getEntity());


} catch (Exception e) {
Log.e(TAG, "httpGet exception, e = " + e.getMessage());
e.printStackTrace();
return null;
}
}

public static byte[] httpPost(String url, String entity) {
if (url == null || url.length() == 0) {
Log.e(TAG, "httpPost, url is null");
return null;
}

HttpClient httpClient = getNewHttpClient();

HttpPost httpPost = new HttpPost(url);

try {
httpPost.setEntity(new StringEntity(entity));
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");

HttpResponse resp = httpClient.execute(httpPost);
if (resp.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
Log.e(TAG, "httpGet fail, status code = " + resp.getStatusLine().getStatusCode());
return null;
}


return EntityUtils.toByteArray(resp.getEntity());
} catch (Exception e) {
Log.e(TAG, "httpPost exception, e = " + e.getMessage());
e.printStackTrace();
return null;
}
}

private static class SSLSocketFactoryEx extends SSLSocketFactory {      
     
   SSLContext sslContext = SSLContext.getInstance("TLS");      
     
   public SSLSocketFactoryEx(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {      
       super(truststore);      
     
       TrustManager tm = new X509TrustManager() {      
     
           public X509Certificate[] getAcceptedIssuers() {      
               return null;      
           }      
     
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {
}


@Override
public void checkServerTrusted(X509Certificate[] chain,String authType) throws java.security.cert.CertificateException {
}  
       };      
     
       sslContext.init(null, new TrustManager[] { tm }, null);      
   }      
     
@Override
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return sslContext.getSocketFactory().createSocket(socket, host,port, autoClose);
}


@Override
public Socket createSocket() throws IOException {
return sslContext.getSocketFactory().createSocket();
} 
}  


private static HttpClient getNewHttpClient() { 
  try { 
      KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType()); 
      trustStore.load(null, null); 


      SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore); 
      sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); 


      HttpParams params = new BasicHttpParams(); 
      HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); 
      HttpProtocolParams.setContentCharset(params, HTTP.UTF_8); 


      SchemeRegistry registry = new SchemeRegistry(); 
      registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80)); 
      registry.register(new Scheme("https", sf, 443)); 


      ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry); 


      return new DefaultHttpClient(ccm, params); 
  } catch (Exception e) { 
      return new DefaultHttpClient(); 
  } 
}

public static byte[] readFromFile(String fileName, int offset, int len) {
if (fileName == null) {
return null;
}


File file = new File(fileName);
if (!file.exists()) {
Log.i(TAG, "readFromFile: file not found");
return null;
}


if (len == -1) {
len = (int) file.length();
}


Log.d(TAG, "readFromFile : offset = " + offset + " len = " + len + " offset + len = " + (offset + len));


if(offset <0){
Log.e(TAG, "readFromFile invalid offset:" + offset);
return null;
}
if(len <=0 ){
Log.e(TAG, "readFromFile invalid len:" + len);
return null;
}
if(offset + len > (int) file.length()){
Log.e(TAG, "readFromFile invalid file len:" + file.length());
return null;
}


byte[] b = null;
try {
RandomAccessFile in = new RandomAccessFile(fileName, "r");
b = new byte[len]; // ���������ļ���С������
in.seek(offset);
in.readFully(b);
in.close();


} catch (Exception e) {
Log.e(TAG, "readFromFile : errMsg = " + e.getMessage());
e.printStackTrace();
}
return b;
}

private static final int MAX_DECODE_PICTURE_SIZE = 1920 * 1440;
public static Bitmap extractThumbNail(final String path, final int height, final int width, final boolean crop) {
Assert.assertTrue(path != null && !path.equals("") && height > 0 && width > 0);


BitmapFactory.Options options = new BitmapFactory.Options();


try {
options.inJustDecodeBounds = true;
Bitmap tmp = BitmapFactory.decodeFile(path, options);
if (tmp != null) {
tmp.recycle();
tmp = null;
}


Log.d(TAG, "extractThumbNail: round=" + width + "x" + height + ", crop=" + crop);
final double beY = options.outHeight * 1.0 / height;
final double beX = options.outWidth * 1.0 / width;
Log.d(TAG, "extractThumbNail: extract beX = " + beX + ", beY = " + beY);
options.inSampleSize = (int) (crop ? (beY > beX ? beX : beY) : (beY < beX ? beX : beY));
if (options.inSampleSize <= 1) {
options.inSampleSize = 1;
}


// NOTE: out of memory error
while (options.outHeight * options.outWidth / options.inSampleSize > MAX_DECODE_PICTURE_SIZE) {
options.inSampleSize++;
}


int newHeight = height;
int newWidth = width;
if (crop) {
if (beY > beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
} else {
if (beY < beX) {
newHeight = (int) (newWidth * 1.0 * options.outHeight / options.outWidth);
} else {
newWidth = (int) (newHeight * 1.0 * options.outWidth / options.outHeight);
}
}


options.inJustDecodeBounds = false;


Log.i(TAG, "bitmap required size=" + newWidth + "x" + newHeight + ", orig=" + options.outWidth + "x" + options.outHeight + ", sample=" + options.inSampleSize);
Bitmap bm = BitmapFactory.decodeFile(path, options);
if (bm == null) {
Log.e(TAG, "bitmap decode failed");
return null;
}


Log.i(TAG, "bitmap decoded size=" + bm.getWidth() + "x" + bm.getHeight());
final Bitmap scale = Bitmap.createScaledBitmap(bm, newWidth, newHeight, true);
if (scale != null) {
bm.recycle();
bm = scale;
}


if (crop) {
final Bitmap cropped = Bitmap.createBitmap(bm, (bm.getWidth() - width) >> 1, (bm.getHeight() - height) >> 1, width, height);
if (cropped == null) {
return bm;
}


bm.recycle();
bm = cropped;
Log.i(TAG, "bitmap croped size=" + bm.getWidth() + "x" + bm.getHeight());
}
return bm;


} catch (final OutOfMemoryError e) {
Log.e(TAG, "decode bitmap failed: " + e.getMessage());
options = null;
}


return null;
}

public static String sha1(String str) {
if (str == null || str.length() == 0) {
return null;
}

char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

try {
MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
mdTemp.update(str.getBytes());

byte[] md = mdTemp.digest();
int j = md.length;
char buf[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
buf[k++] = hexDigits[byte0 & 0xf];
}
return new String(buf);
} catch (Exception e) {
return null;
}
}

public static List<String> stringsToList(final String[] src) {
if (src == null || src.length == 0) {
return null;
}
final List<String> result = new ArrayList<String>();
for (int i = 0; i < src.length; i++) {
result.add(src[i]);
}
return result;
}
}