import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;

/**
 * WIFI管理類
 * @author
 
 ZHF
 *
 */
public class WifiAdmin {
    private static  WifiAdmin wifiAdmin = null;

    private List<WifiConfiguration> mWifiConfiguration; //無線網路配置資訊類集合(網路連線列表)
    private List<ScanResult> mWifiList; //檢測到接入點資訊類 集合

    //描述任何Wifi連線狀態
    private WifiInfo mWifiInfo;

    WifiManager.WifiLock mWifilock; //能夠阻止wifi進入睡眠狀態，使wifi一直處於活躍狀態
 

    public WifiManager mWifiManager;

    /**
     * 獲取該類的例項（懶漢）
     * @param context
     * @return
     */
    public static WifiAdmin getInstance(Context context) {
        if(wifiAdmin == null) {
            wifiAdmin = new WifiAdmin(context);
        }
        return wifiAdmin;
    }
    private
 
 WifiAdmin(Context context) {
        //獲取系統Wifi服務   WIFI_SERVICE
        this.mWifiManager = (WifiManager) context.getSystemService("wifi");
        //獲取連線資訊
        this.mWifiInfo = this.mWifiManager.getConnectionInfo();
    }

    /**
     * 是否存在網路資訊
     * @param str  熱點名稱
     * @return
     */
    private WifiConfiguration isExsits(String str) {
        Iterator localIterator = this.mWifiManager.getConfiguredNetworks().iterator();
        WifiConfiguration localWifiConfiguration;
        do {
            if(!localIterator.hasNext()) return null;
            localWifiConfiguration = (WifiConfiguration) localIterator.next();
        }while(!localWifiConfiguration.SSID.equals("\"" + str + "\""));
        return localWifiConfiguration;
    }

    /**鎖定WifiLock，當下載大檔案時需要鎖定 **/
    public void AcquireWifiLock() {
        this.mWifilock.acquire();
    }
    /**建立一個WifiLock**/
    public void CreateWifiLock() {
        this.mWifilock = this.mWifiManager.createWifiLock("Test");
    }
    /**解鎖WifiLock**/
    public void ReleaseWifilock() {
        if(mWifilock.isHeld()) { //判斷時候鎖定
            mWifilock.acquire();
        }
    }


    /**開啟Wifi**/
    public void OpenWifi() {
        if(!this.mWifiManager.isWifiEnabled()){ //當前wifi不可用
            this.mWifiManager.setWifiEnabled(true);
        }
    }
    /**關閉Wifi**/
    public void closeWifi() {
        if(mWifiManager.isWifiEnabled()) {
            mWifiManager.setWifiEnabled(false);
        }
    }
    /**埠指定id的wifi**/
    public void disconnectWifi(int paramInt) {
        this.mWifiManager.disableNetwork(paramInt);
    }

    /**新增指定網路**/
    public void addNetwork(WifiConfiguration paramWifiConfiguration) {
        int i = mWifiManager.addNetwork(paramWifiConfiguration);
        mWifiManager.enableNetwork(i, true);
    }

    /**
     * 連線指定配置好的網路
     * @param index 配置好網路的ID
     */
    public void connectConfiguration(int index) {
        // 索引大於配置好的網路索引返回
        if (index > mWifiConfiguration.size()) {
            return;
        }
        //連線配置好的指定ID的網路
        mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true);
    }

    /**
     * 根據wifi資訊建立或關閉一個熱點
     * @param paramWifiConfiguration
     * @param paramBoolean 關閉標誌
     */
    public void createWifiAP(WifiConfiguration paramWifiConfiguration,boolean paramBoolean) {
        try {
            Class localClass = this.mWifiManager.getClass();
            Class[] arrayOfClass = new Class[2];
            arrayOfClass[0] = WifiConfiguration.class;
            arrayOfClass[1] = Boolean.TYPE;
            Method localMethod = localClass.getMethod("setWifiApEnabled",arrayOfClass);
            WifiManager localWifiManager = this.mWifiManager;
            Object[] arrayOfObject = new Object[2];
            arrayOfObject[0] = paramWifiConfiguration;
            arrayOfObject[1] = Boolean.valueOf(paramBoolean);
            localMethod.invoke(localWifiManager, arrayOfObject);
            return;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 建立一個wifi資訊
     * @param ssid 名稱
     * @param passawrd 密碼
     * @param paramInt 有3個引數，1是無密碼，2是簡單密碼，3是wap加密
     * @param type 是"ap"還是"wifi"
     * @return
     */
    public WifiConfiguration createWifiInfo(String ssid, String passawrd,int paramInt, String type) {
        //配置網路資訊類
        WifiConfiguration localWifiConfiguration1 = new WifiConfiguration();
        //設定配置網路屬性
        localWifiConfiguration1.allowedAuthAlgorithms.clear();
        localWifiConfiguration1.allowedGroupCiphers.clear();
        localWifiConfiguration1.allowedKeyManagement.clear();
        localWifiConfiguration1.allowedPairwiseCiphers.clear();
        localWifiConfiguration1.allowedProtocols.clear();

        if(type.equals("wt")) { //wifi連線
            localWifiConfiguration1.SSID = ("\"" + ssid + "\"");
            WifiConfiguration localWifiConfiguration2 = isExsits(ssid);
            if(localWifiConfiguration2 != null) {
                mWifiManager.removeNetwork(localWifiConfiguration2.networkId); //從列表中刪除指定的網路配置網路
            }
            if(paramInt == 1) { //沒有密碼
                localWifiConfiguration1.wepKeys[0] = "";
                localWifiConfiguration1.allowedKeyManagement.set(0);
                localWifiConfiguration1.wepTxKeyIndex = 0;
            } else if(paramInt == 2) { //簡單密碼
                localWifiConfiguration1.hiddenSSID = true;
                localWifiConfiguration1.wepKeys[0] = ("\"" + passawrd + "\"");
            } else { //wap加密
                localWifiConfiguration1.preSharedKey = ("\"" + passawrd + "\"");
                localWifiConfiguration1.hiddenSSID = true;
                localWifiConfiguration1.allowedAuthAlgorithms.set(0);
                localWifiConfiguration1.allowedGroupCiphers.set(2);
                localWifiConfiguration1.allowedKeyManagement.set(1);
                localWifiConfiguration1.allowedPairwiseCiphers.set(1);
                localWifiConfiguration1.allowedGroupCiphers.set(3);
                localWifiConfiguration1.allowedPairwiseCiphers.set(2);
            }
        }else {//"ap" wifi熱點
            localWifiConfiguration1.SSID = ssid;
            localWifiConfiguration1.allowedAuthAlgorithms.set(1);
            localWifiConfiguration1.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
            localWifiConfiguration1.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
            localWifiConfiguration1.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
            localWifiConfiguration1.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
            localWifiConfiguration1.allowedKeyManagement.set(0);
            localWifiConfiguration1.wepTxKeyIndex = 0;
            if (paramInt == 1) {  //沒有密碼
                localWifiConfiguration1.wepKeys[0] = "";
                localWifiConfiguration1.allowedKeyManagement.set(0);
                localWifiConfiguration1.wepTxKeyIndex = 0;
            } else if (paramInt == 2) { //簡單密碼
                localWifiConfiguration1.hiddenSSID = true;//網路上不廣播ssid
                localWifiConfiguration1.wepKeys[0] = passawrd;
            } else if (paramInt == 3) {//wap加密
                localWifiConfiguration1.preSharedKey = passawrd;
                localWifiConfiguration1.allowedAuthAlgorithms.set(0);
                localWifiConfiguration1.allowedProtocols.set(1);
                localWifiConfiguration1.allowedProtocols.set(0);
                localWifiConfiguration1.allowedKeyManagement.set(1);
                localWifiConfiguration1.allowedPairwiseCiphers.set(2);
                localWifiConfiguration1.allowedPairwiseCiphers.set(1);
            }
        }
        return localWifiConfiguration1;
    }

    /**獲取熱點名**/
    public String getApSSID() {
        try {
            Method localMethod = this.mWifiManager.getClass().getDeclaredMethod("getWifiApConfiguration", new Class[0]);
            if (localMethod == null) return null;
            Object localObject1 = localMethod.invoke(this.mWifiManager,new Object[0]);
            if (localObject1 == null) return null;
            WifiConfiguration localWifiConfiguration = (WifiConfiguration) localObject1;
            if (localWifiConfiguration.SSID != null) return localWifiConfiguration.SSID;
            Field localField1 = WifiConfiguration.class .getDeclaredField("mWifiApProfile");
            if (localField1 == null) return null;
            localField1.setAccessible(true);
            Object localObject2 = localField1.get(localWifiConfiguration);
            localField1.setAccessible(false);
            if (localObject2 == null)  return null;
            Field localField2 = localObject2.getClass().getDeclaredField("SSID");
            localField2.setAccessible(true);
            Object localObject3 = localField2.get(localObject2);
            if (localObject3 == null) return null;
            localField2.setAccessible(false);
            String str = (String) localObject3;
            return str;
        } catch (Exception localException) {
        }
        return null;
    }

    /**獲取wifi名**/
    public String getBSSID() {
        if (this.mWifiInfo == null)
            return "NULL";
        return this.mWifiInfo.getBSSID();
    }

    /**得到配置好的網路 **/
    public List<WifiConfiguration> getConfiguration() {
        return this.mWifiConfiguration;
    }

    /**獲取ip地址**/
    public int getIPAddress() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
    }
    /**獲取實體地址(Mac)**/
    public String getMacAddress() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
    }

    /**獲取網路id**/
    public int getNetworkId() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
    }
    /**獲取熱點建立狀態**/
    public int getWifiApState() {
        try {
            int i = ((Integer) this.mWifiManager.getClass()
                    .getMethod("getWifiApState", new Class[0])
                    .invoke(this.mWifiManager, new Object[0])).intValue();
            return i;
        } catch (Exception localException) {
        }
        return 4;   //未知wifi網絡卡狀態
    }
    /**獲取wifi連線資訊**/
    public WifiInfo getWifiInfo() {
        return this.mWifiManager.getConnectionInfo();
    }
    /** 得到網路列表**/
    public List<ScanResult> getWifiList() {
        return this.mWifiList;
    }

    /**檢視掃描結果**/
    public StringBuilder lookUpScan() {
        StringBuilder localStringBuilder = new StringBuilder();
        for (int i = 0; i < mWifiList.size(); i++)
        {
            localStringBuilder.append("Index_"+new Integer(i + 1).toString() + ":");
            //將ScanResult資訊轉換成一個字串包
            //其中把包括：BSSID、SSID、capabilities、frequency、level
            localStringBuilder.append((mWifiList.get(i)).toString());
            localStringBuilder.append("\n");
        }
        return localStringBuilder;
    }

    /** 設定wifi搜尋結果 **/
    public void setWifiList() {
        this.mWifiList = this.mWifiManager.getScanResults();
    }
    /**開始搜尋wifi**/
    public void startScan() {
        this.mWifiManager.startScan();
    }
    /**得到接入點的BSSID**/
    public String GetBSSID() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
    }
}