/**
    * Copyright 2004-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.student.contract.writer;
  
  import org.kuali.student.contract.exception.DictionaryExecutionException;
  import org.kuali.student.contract.model.impl.ServiceContractModelPescXsdLoader;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.PrintStream;
  import java.util.Calendar;
  import java.util.Set;
  import java.util.TreeSet;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   *
   * @author nwright
   */
  public abstract class JavaClassWriter extends XmlWriter {
  
      private static Logger log = LoggerFactory.getLogger(JavaClassWriter.class);
      
      private String rootDirectory;
      private String packageName;
      private String className;
      private String fileName;
      private String directory;
      private ByteArrayOutputStream body;
      private Set<String> imports;
  
      public JavaClassWriter(String rootDirectory, String packageName,
              String className) {
          super();
          this.body = new ByteArrayOutputStream(1000);
          this.setOut(new PrintStream(body));
          this.setIndent(0);
          this.rootDirectory = rootDirectory;
  
          this.packageName = packageName;
          this.className = className;
          this.fileName =
                  new JavaClassFileNameBuilder(rootDirectory, packageName, className).build();
          this.directory =
                  new JavaClassFileNameBuilder(rootDirectory, packageName, className).buildDirectory();
          this.imports = new TreeSet();
      }
  
      public ByteArrayOutputStream getBody() {
          return body;
      }
  
      public String getClassName() {
          return className;
      }
  
      public String getDirectory() {
          return directory;
      }
  
      public String getFileName() {
          return fileName;
      }
  
      public String getPackageName() {
          return packageName;
      }
  
      protected void setPackageName(String packageName) {
          this.packageName = packageName;
      }
  
      public String getRootDirectory() {
          return rootDirectory;
      }
  
      public void importsAdd(String pack) {
          if (pack.startsWith("java.lang.")) {
              return;
          }
          this.imports.add(pack);
     }
 
     public void writeHeader() {
         indentPrintln("/*");
         indentPrintln(" * Copyright " + Calendar.getInstance().get(Calendar.YEAR)  + " The Kuali Foundation");
         indentPrintln(" *");
         indentPrintln(" * Licensed under the Educational Community License, Version 2.0 (the \"License\");");
         indentPrintln(" * you may not use this file except in compliance with the License.");
         indentPrintln(" * You may obtain a copy of the License at");
         indentPrintln(" *");
         indentPrintln(" * 	http://www.osedu.org/licenses/ECL-2.0");
         indentPrintln(" *");
         indentPrintln(" * Unless required by applicable law or agreed to in writing, software");
         indentPrintln(" * distributed under the License is distributed on an \"AS IS\" BASIS,");
         indentPrintln(" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.");
         indentPrintln(" * See the License for the specific language governing permissions and");
         indentPrintln(" * limitations under the License.");
         indentPrintln(" */");
         indentPrintln("package " + packageName + ";");
         indentPrintln("");
     }
 
     public void writeImports() {
         if (imports.isEmpty()) {
             return;
         }
 
 
         for (String imprt : imports) {
             // exclude imports from same package
             if (imprt.startsWith(packageName)) {
                 // don't exclude imports for same package that are including nested classes
                 if (!imprt.substring(packageName.length() + 1).contains(".")) {
                     continue;
                 }
             }
             indentPrintln("import " + imprt + ";");
         }
         indentPrintln("");
     }
 
     public void writeJavaClassAndImportsOutToFile() {
 
         File dir = new File(this.directory);
         log.debug ("Writing java class: " + fileName + " to " + dir.getAbsolutePath ());
 
         if (!dir.exists()) {
             if (!dir.mkdirs()) {
                 throw new DictionaryExecutionException("Could not create directory "
                         + this.directory);
             }
         }
         try {
             PrintStream out = new PrintStream(new FileOutputStream(fileName, false));
             this.setOut(out);
         } catch (FileNotFoundException ex) {
             throw new DictionaryExecutionException(ex);
         }
         writeHeader();
         indentPrintln("");
         writeImports();
         indentPrintln("");
         indentPrintln(body.toString());
     }
 
     public void openBrace() {
         indentPrintln("{");
         incrementIndent();
     }
 
     public void closeBrace() {
         decrementIndent();
         indentPrintln("}");
     }
 
     public void indentPrintWrappedComment(String str) {
         Pattern pattern = Pattern.compile(".{0,79}(?:\\S(?:-| |$)|$)");
         Matcher m = pattern.matcher(str);
         while (m.find()) {
             // suppresss blank lines
             if (m.group().equals("")) {
                 continue;
             }
             indentPrint("* ");
             println(m.group());
         }
     }
 }