Fix build when come from fork and other issues

app/build.gradle

@@ -13,9 +13,13 @@ android {
     }
     buildTypes {
         buildTypes.each {
-            it.buildConfigField 'String', 'GLPI_USER', glpi_user
-            it.buildConfigField 'String', 'GLPI_PASSWORD', glpi_password
-            it.buildConfigField 'String', 'GLPI_URL', glpi_url
+            def glpi_user_val = glpi_user ?: "\"\""
+            def glpi_password_val = glpi_password ?: "\"\""
+            def glpi_url_val = glpi_url ?: "\"\""
+
+            it.buildConfigField 'String', 'GLPI_USER', glpi_user_val
+            it.buildConfigField 'String', 'GLPI_PASSWORD', glpi_password_val
+            it.buildConfigField 'String', 'GLPI_URL', glpi_url_val
         }
         release {
             minifyEnabled false
@@ -33,4 +37,5 @@ dependencies {
     compile 'com.android.support.constraint:constraint-layout:1.0.2'
     testCompile 'junit:junit:4.12'
     compile project(':glpi')
+    compile 'com.orhanobut:logger:2.1.0'
 }

app/src/main/java/org/glpi/glpiproject/FlyveLog.java

@@ -0,0 +1,225 @@
+/* ---------------------------------------------------------------------
+*
+*  LICENSE
+*
+*  This file is part of the GLPI API Client Library for Java,
+*  a subproject of GLPI. GLPI is a free IT Asset Management.
+*
+*  GLPI is free software: you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License
+*  as published by the Free Software Foundation; either version 3
+*  of the License, or (at your option) any later version.
+*
+*  GLPI is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*  --------------------------------------------------------------------
+*  @author    Rafael Hernandez - <[email protected]>
+*  @copyright (C) 2017 Teclib' and contributors.
+*  @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+*  @link      https://github.com/glpi-project/java-library-glpi
+*  @link      http://www.glpi-project.org/
+*  --------------------------------------------------------------------
+*/
+
+package org.glpi.glpiproject;
+
+import android.os.Environment;
+import com.orhanobut.logger.Logger;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+/**
+ * This is a Log wrapper
+ */
+public class FlyveLog {
+
+    private static final String FILE_NAME_FEEDBACK = "FlyveMDMFeedback.txt";
+    public static final String FILE_NAME_LOG = "FlyveMDMLog.txt";
+
+    /**
+     * private constructor to prevent instances of this class
+     */
+    private FlyveLog() {
+    }
+
+    /**
+     * Send a DEBUG log message
+     * @param object Object to write
+     */
+    public static void d(Object object) {
+            Logger.d(object);
+    }
+
+    /**
+     * Send a DEBUG log message
+     * @param message String message to log
+     * @param args Objects
+     */
+    public static void d(String message, Object... args) {
+            // do something for a debug build
+            Logger.d(message,args);
+
+    }
+
+    /**
+     * Send a VERBOSE log message
+     * @param message String message
+     * @param args Objects
+     */
+    public static void v(String message, Object... args) {
+            Logger.v(message, args);
+    }
+
+    /**
+     * Send INFORMATION log message
+     * @param message String message
+     * @param args Objects
+     */
+    public static void i(String message, Object... args) {
+            Logger.i(message, args);
+    }
+
+    /**
+     * Send ERROR log message
+     * @param throwable Throwable error
+     * @param message String message
+     * @param args Objects
+     */
+    public static void e(Throwable throwable, String message, Object... args) {
+            Logger.e(throwable, message, args);
+    }
+
+    /**
+     * Send Error log message
+     * @param message String message
+     * @param args Objects
+     */
+    public static void e(String message, Object... args) {
+            Logger.e(message, args);
+    }
+
+    /**
+     * send What a Terrible Failure log message
+     * @param message String message
+     * @param args Objects
+     */
+    public static void wtf(String message, Object... args) {
+            Logger.wtf(message, args);
+    }
+
+    /**
+     * Send a JSON log message
+     * @param json String the json to show
+     */
+    public static void json(String json) {
+            Logger.json(json);
+    }
+
+    /**
+     * Send a XML log message
+     * @param xml String the xml to show
+     */
+    public static void xml(String xml) {
+            Logger.xml(xml);
+    }
+
+    /**
+     * Logs the message in a directory
+     * @param string the message
+     * @param string the filename
+     */
+    public static void f(String message, String filename) {
+        String state = Environment.getExternalStorageState();
+
+        File dir = new File("/sdcard/FlyveMDM");
+        if (Environment.MEDIA_MOUNTED.equals(state)) {
+            if(!dir.exists()) {
+                FlyveLog.d("Dir created ", "Dir created ");
+                dir.mkdirs();
+            }
+
+            File logFile = new File("/sdcard/FlyveMDM/" + filename);
+
+            if (!logFile.exists())  {
+                try  {
+                    FlyveLog.d("File created ", "File created ");
+                    logFile.createNewFile();
+                } catch (IOException ex) {
+                    FlyveLog.e(ex.getMessage());
+                }
+            }
+
+            FileWriter fw = null;
+            try {
+                //BufferedWriter for performance, true to set append to file flag
+                fw = new FileWriter(logFile, true);
+                BufferedWriter buf = new BufferedWriter(fw);
+
+                buf.write(message);
+                buf.newLine();
+                buf.flush();
+                buf.close();
+                fw.close();
+            }
+            catch (IOException ex) {
+                e(ex.getMessage());
+            }
+            finally {
+                if(fw!=null) {
+                    try {
+                        fw.close();
+                    } catch(Exception ex) {
+                        FlyveLog.e(ex.getMessage());
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Clear the log
+     * @param string the file name
+     * @throws Exception an error message
+     */
+    public static void clearLog(String filename) {
+        String state = Environment.getExternalStorageState();
+
+        File dir = new File("/sdcard/FlyveMDM");
+        if (Environment.MEDIA_MOUNTED.equals(state)) {
+            if (!dir.exists()) {
+                FlyveLog.d("Dir created ", "Dir created ");
+                dir.mkdirs();
+            }
+
+            File logFile = new File("/sdcard/FlyveMDM/" + filename);
+
+            FileWriter fw = null;
+            try {
+                //BufferedWriter for performance, true to set append to file flag
+                fw = new FileWriter(logFile, false);
+                PrintWriter pwOb = new PrintWriter(fw, false);
+                pwOb.flush();
+                pwOb.close();
+            }
+            catch (IOException ex) {
+                e(ex.getMessage());
+            }
+            finally {
+                if(fw!=null) {
+                    try {
+                        fw.close();
+                    } catch(Exception ex) {
+                        FlyveLog.e(ex.getMessage());
+                    }
+                }
+            }
+
+        }
+    }
+
+}