//
   //  ========================================================================
   //  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.start;
  
  import static org.eclipse.jetty.start.UsageException.*;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.ListIterator;
  import java.util.Map;
  import java.util.Set;
  import java.util.StringTokenizer;
  
  import org.eclipse.jetty.start.Props.Prop;
  import org.eclipse.jetty.start.config.ConfigSource;
  import org.eclipse.jetty.start.config.ConfigSources;
  import org.eclipse.jetty.start.config.DirConfigSource;
  
  /**
   * The Arguments required to start Jetty.
   */
  public class StartArgs
  {
      public static final String VERSION;
  
      static
      {
          String ver = System.getProperty("jetty.version",null);
  
          if (ver == null)
          {
              Package pkg = StartArgs.class.getPackage();
              if ((pkg != null) && "Eclipse.org - Jetty".equals(pkg.getImplementationVendor()) && (pkg.getImplementationVersion() != null))
              {
                  ver = pkg.getImplementationVersion();
              }
          }
  
          if (ver == null)
          {
              ver = "TEST";
          }
  
          VERSION = ver;
          System.setProperty("jetty.version",VERSION);
      }
  
      private static final String SERVER_MAIN = "org.eclipse.jetty.xml.XmlConfiguration";
  
      /** List of enabled modules */
      private Set<String> modules = new HashSet<>();
      /** Map of enabled modules to the source of where that activation occurred */
      private Map<String, List<String>> sources = new HashMap<>();
      /** Map of properties to where that property was declared */
      private Map<String, String> propertySource = new HashMap<>();
      /** List of all active [files] sections from enabled modules */
      private List<FileArg> files = new ArrayList<>();
      /** List of all active [lib] sectinos from enabled modules */
      private Classpath classpath;
      /** List of all active [xml] sections from enabled modules */
      private List<Path> xmls = new ArrayList<>();
      /** JVM arguments, found via commmand line and in all active [exec] sections from enabled modules */
      private List<String> jvmArgs = new ArrayList<>();
  
      /** List of all xml references found directly on command line or start.ini */
      private List<String> xmlRefs = new ArrayList<>();
  
      /** List of all property references found directly on command line or start.ini */
      private List<String> propertyFileRefs = new ArrayList<>();
      
      /** List of all property files */
      private List<Path> propertyFiles = new ArrayList<>();
  
      private Props properties = new Props();
      private Set<String> systemPropertyKeys = new HashSet<>();
      private List<String> rawLibs = new ArrayList<>();
 
     // jetty.base - build out commands
     /** --add-to-startd=[module,[module]] */
     private List<String> addToStartdIni = new ArrayList<>();
     /** --add-to-start=[module,[module]] */
     private List<String> addToStartIni = new ArrayList<>();
 
     // module inspection commands
     /** --write-module-graph=[filename] */
     private String moduleGraphFilename;
 
     /** Collection of all modules */
     private Modules allModules;
     /** Should the server be run? */
     private boolean run = true;
     private boolean download = false;
     private boolean help = false;
     private boolean stopCommand = false;
     private boolean listModules = false;
     private boolean listClasspath = false;
     private boolean listConfig = false;
     private boolean version = false;
     private boolean dryRun = false;
 
     private boolean exec = false;
 
     public StartArgs()
     {
         classpath = new Classpath();
     }
 
     private void addFile(String uriLocation)
     {
         FileArg arg = new FileArg(uriLocation);
         if (!files.contains(arg))
         {
             files.add(arg);
         }
     }
 
     public void addSystemProperty(String key, String value)
     {
         this.systemPropertyKeys.add(key);
         System.setProperty(key,value);
     }
 
     private void addUniqueXmlFile(String xmlRef, Path xmlfile) throws IOException
     {
         if (!FS.canReadFile(xmlfile))
         {
             throw new IOException("Cannot read file: " + xmlRef);
         }
         xmlfile = FS.toRealPath(xmlfile);
         if (!xmls.contains(xmlfile))
         {
             xmls.add(xmlfile);
         }
     }
     
     private void addUniquePropertyFile(String propertyFileRef, Path propertyFile) throws IOException
     {
         if (!FS.canReadFile(propertyFile))
         {
             throw new IOException("Cannot read file: " + propertyFileRef);
         }
         propertyFile = FS.toRealPath(propertyFile);
         if (!propertyFiles.contains(propertyFile))
         {
             propertyFiles.add(propertyFile);
         }
     }
 
     public void dumpActiveXmls(BaseHome baseHome)
     {
         System.out.println();
         System.out.println("Jetty Active XMLs:");
         System.out.println("------------------");
         if (xmls.isEmpty())
         {
             System.out.println(" (no xml files specified)");
             return;
         }
 
         for (Path xml : xmls)
         {
             System.out.printf(" %s%n",baseHome.toShortForm(xml.toAbsolutePath()));
         }
     }
 
     public void dumpEnvironment(BaseHome baseHome)
     {
         // Java Details
         System.out.println();
         System.out.println("Java Environment:");
         System.out.println("-----------------");
         dumpSystemProperty("java.home");
         dumpSystemProperty("java.vm.vendor");
         dumpSystemProperty("java.vm.version");
         dumpSystemProperty("java.vm.name");
         dumpSystemProperty("java.vm.info");
         dumpSystemProperty("java.runtime.name");
         dumpSystemProperty("java.runtime.version");
         dumpSystemProperty("java.io.tmpdir");
         dumpSystemProperty("user.dir");
         dumpSystemProperty("user.language");
         dumpSystemProperty("user.country");
 
         // Jetty Environment
         System.out.println();
         System.out.println("Jetty Environment:");
         System.out.println("-----------------");
         dumpProperty("jetty.version");
         dumpProperty("jetty.home");
         dumpProperty("jetty.base");
         
         // Jetty Configuration Environment
         System.out.println();
         System.out.println("Config Search Order:");
         System.out.println("--------------------");
         for (ConfigSource config : baseHome.getConfigSources())
         {
             System.out.printf(" %s",config.getId());
             if (config instanceof DirConfigSource)
             {
                 DirConfigSource dirsource = (DirConfigSource)config;
                 if (dirsource.isPropertyBased())
                 {
                     System.out.printf(" -> %s",dirsource.getDir());
                 }
             }
             System.out.println();
         }
         
         // Jetty Se
         System.out.println();
     }
 
     public void dumpJvmArgs()
     {
         System.out.println();
         System.out.println("JVM Arguments:");
         System.out.println("--------------");
         if (jvmArgs.isEmpty())
         {
             System.out.println(" (no jvm args specified)");
             return;
         }
 
         for (String jvmArgKey : jvmArgs)
         {
             String value = System.getProperty(jvmArgKey);
             if (value != null)
             {
                 System.out.printf(" %s = %s%n",jvmArgKey,value);
             }
             else
             {
                 System.out.printf(" %s%n",jvmArgKey);
             }
         }
     }
 
     public void dumpProperties()
     {
         System.out.println();
         System.out.println("Properties:");
         System.out.println("-----------");
 
         List<String> sortedKeys = new ArrayList<>();
         for (Prop prop : properties)
         {
             if (prop.origin.equals(Props.ORIGIN_SYSPROP))
             {
                 continue; // skip
             }
             sortedKeys.add(prop.key);
         }
 
         if (sortedKeys.isEmpty())
         {
             System.out.println(" (no properties specified)");
             return;
         }
 
         Collections.sort(sortedKeys);
 
         for (String key : sortedKeys)
         {
             dumpProperty(key);
         }
     }
 
     private void dumpProperty(String key)
     {
         Prop prop = properties.getProp(key);
         if (prop == null)
         {
             System.out.printf(" %s (not defined)%n",key);
         }
         else
         {
             System.out.printf(" %s = %s%n",key,properties.expand(prop.value));
             if (StartLog.isDebugEnabled())
             {
                 System.out.printf("   origin: %s%n",prop.origin);
                 while (prop.overrides != null)
                 {
                     prop = prop.overrides;
                     System.out.printf("   (overrides)%n");
                     System.out.printf("     %s = %s%n",key,properties.expand(prop.value));
                     System.out.printf("     origin: %s%n",prop.origin);
                 }
             }
         }
     }
 
     public void dumpSystemProperties()
     {
         System.out.println();
         System.out.println("System Properties:");
         System.out.println("------------------");
 
         if (systemPropertyKeys.isEmpty())
         {
             System.out.println(" (no system properties specified)");
             return;
         }
 
         List<String> sortedKeys = new ArrayList<>();
         sortedKeys.addAll(systemPropertyKeys);
         Collections.sort(sortedKeys);
 
         for (String key : sortedKeys)
         {
             String value = System.getProperty(key);
             System.out.printf(" %s = %s%n",key,properties.expand(value));
         }
     }
 
     private void dumpSystemProperty(String key)
     {
         System.out.printf(" %s = %s%n",key,System.getProperty(key));
     }
 
     /**
      * Ensure that the System Properties are set (if defined as a System property, or start.config property, or start.ini property)
      * 
      * @param key
      *            the key to be sure of
      */
     private void ensureSystemPropertySet(String key)
     {
         if (systemPropertyKeys.contains(key))
         {
             return; // done
         }
 
         if (properties.containsKey(key))
         {
             String val = properties.expand(properties.getString(key));
             if (val == null)
             {
                 return; // no value to set
             }
             // setup system property
             systemPropertyKeys.add(key);
             System.setProperty(key,val);
         }
     }
 
     /**
      * Expand any command line added <code>--lib</code> lib references.
      * 
      * @param baseHome
      * @throws IOException
      */
     public void expandLibs(BaseHome baseHome) throws IOException
     {
         for (String rawlibref : rawLibs)
         {
             StartLog.debug("rawlibref = " + rawlibref);
             String libref = properties.expand(rawlibref);
             StartLog.debug("expanded = " + libref);
             
             // perform path escaping (needed by windows)
             libref = libref.replaceAll("\\\\([^\\\\])","\\\\\\\\$1");
             
             for (Path libpath : baseHome.getPaths(libref))
             {
                 classpath.addComponent(libpath.toFile());
             }
         }
     }
 
     /**
      * Build up the Classpath and XML file references based on enabled Module list.
      * 
      * @param baseHome
      * @param activeModules
      * @throws IOException
      */
     public void expandModules(BaseHome baseHome, List<Module> activeModules) throws IOException
     {
         for (Module module : activeModules)
         {
             // Find and Expand Libraries
             for (String rawlibref : module.getLibs())
             {
                 StartLog.debug("rawlibref = " + rawlibref);
                 String libref = properties.expand(rawlibref);
                 StartLog.debug("expanded = " + libref);
 
                 for (Path libpath : baseHome.getPaths(libref))
                 {
                     classpath.addComponent(libpath.toFile());
                 }
             }
 
             for (String jvmArg : module.getJvmArgs())
             {
                 exec = true;
                 jvmArgs.add(jvmArg);
             }
 
             // Find and Expand XML files
             for (String xmlRef : module.getXmls())
             {
                 // Straight Reference
                 Path xmlfile = baseHome.getPath(xmlRef);
                 addUniqueXmlFile(xmlRef,xmlfile);
             }
 
             // Register Download operations
             for (String file : module.getFiles())
             {
                 StartLog.debug("Adding module specified file: %s",file);
                 addFile(file);
             }
         }
     }
 
     public List<String> getAddToStartdIni()
     {
         return addToStartdIni;
     }
 
     public List<String> getAddToStartIni()
     {
         return addToStartIni;
     }
 
     public Modules getAllModules()
     {
         return allModules;
     }
 
     public Classpath getClasspath()
     {
         return classpath;
     }
 
     public Set<String> getEnabledModules()
     {
         return this.modules;
     }
 
     public List<FileArg> getFiles()
     {
         return files;
     }
 
     public List<String> getJvmArgs()
     {
         return jvmArgs;
     }
 
     public CommandLineBuilder getMainArgs(BaseHome baseHome, boolean addJavaInit) throws IOException
     {
         CommandLineBuilder cmd = new CommandLineBuilder();
 
         if (addJavaInit)
         {
             cmd.addRawArg(CommandLineBuilder.findJavaBin());
 
             for (String x : jvmArgs)
             {
                 cmd.addRawArg(x);
             }
 
             cmd.addRawArg("-Djetty.home=" + baseHome.getHome());
             cmd.addRawArg("-Djetty.base=" + baseHome.getBase());
 
             // System Properties
             for (String propKey : systemPropertyKeys)
             {
                 String value = System.getProperty(propKey);
                 cmd.addEqualsArg("-D" + propKey,value);
             }
 
             cmd.addRawArg("-cp");
             cmd.addRawArg(classpath.toString());
             cmd.addRawArg(getMainClassname());
         }
 
         // Special Stop/Shutdown properties
         ensureSystemPropertySet("STOP.PORT");
         ensureSystemPropertySet("STOP.KEY");
         ensureSystemPropertySet("STOP.WAIT");
 
         // Check if we need to pass properties as a file
         if (properties.size() > 0)
         {
             File prop_file = File.createTempFile("start",".properties");
             if (!dryRun)
             {
                 prop_file.deleteOnExit();
             }
             try (FileOutputStream out = new FileOutputStream(prop_file))
             {
                 properties.store(out,"start.jar properties");
             }
             cmd.addRawArg(prop_file.getAbsolutePath());
         }
 
         for (Path xml : xmls)
         {
             cmd.addRawArg(xml.toAbsolutePath().toString());
         }
         
         for (Path propertyFile : propertyFiles)
         {
             cmd.addRawArg(propertyFile.toAbsolutePath().toString());
         }
 
         return cmd;
     }
 
     public String getMainClassname()
     {
         String mainclass = System.getProperty("jetty.server",SERVER_MAIN);
         return System.getProperty("main.class",mainclass);
     }
 
     public String getModuleGraphFilename()
     {
         return moduleGraphFilename;
     }
 
     public Props getProperties()
     {
         return properties;
     }
 
     public List<String> getSources(String module)
     {
         return sources.get(module);
     }
 
     public List<Path> getXmlFiles()
     {
         return xmls;
     }
 
     public boolean hasJvmArgs()
     {
         return jvmArgs.size() > 0;
     }
 
     public boolean hasSystemProperties()
     {
         for (String key : systemPropertyKeys)
         {
             // ignored keys
             if ("jetty.home".equals(key) || "jetty.base".equals(key))
             {
                 // skip
                 continue;
             }
             return true;
         }
         return false;
     }
 
     public boolean isDownload()
     {
         return download;
     }
 
     public boolean isDryRun()
     {
         return dryRun;
     }
 
     public boolean isExec()
     {
         return exec;
     }
 
     public boolean isHelp()
     {
         return help;
     }
 
     public boolean isListClasspath()
     {
         return listClasspath;
     }
 
     public boolean isListConfig()
     {
         return listConfig;
     }
 
     public boolean isListModules()
     {
         return listModules;
     }
 
     public boolean isRun()
     {
         return run;
     }
 
     public boolean isStopCommand()
     {
         return stopCommand;
     }
 
     public boolean isVersion()
     {
         return version;
     }
 
     public void parse(ConfigSources sources)
     {
         ListIterator<ConfigSource> iter = sources.reverseListIterator();
         while (iter.hasPrevious())
         {
             ConfigSource source = iter.previous();
             for (String arg : source.getArgs())
             {
                 parse(arg,source.getId());
             }
         }
     }
 
     public void parse(final String rawarg, String source)
     {
         if (rawarg == null)
         {
             return;
         }
 
         final String arg = rawarg.trim();
 
         if (arg.length() <= 0)
         {
             return;
         }
 
         if (arg.startsWith("#"))
         {
             return;
         }
 
         if ("--help".equals(arg) || "-?".equals(arg))
         {
             help = true;
             run = false;
             return;
         }
 
         if ("--debug".equals(arg) || arg.startsWith("--start-log-file"))
         {
             // valid, but handled in StartLog instead
             return;
         }
 
         if (arg.startsWith("--include-jetty-dir="))
         {
             // valid, but handled in ConfigSources instead
             return;
         }
 
         if ("--stop".equals(arg))
         {
             stopCommand = true;
             run = false;
             return;
         }
 
         if (arg.startsWith("--download="))
         {
             addFile(Props.getValue(arg));
             run = false;
             download = true;
             return;
         }
 
         if (arg.equals("--create-files"))
         {
             run = false;
             download = true;
             return;
         }
 
         if ("--list-classpath".equals(arg) || "--version".equals(arg) || "-v".equals(arg) || "--info".equals(arg))
         {
             listClasspath = true;
             run = false;
             return;
         }
 
         if ("--list-config".equals(arg))
         {
             listConfig = true;
             run = false;
             return;
         }
 
         if ("--dry-run".equals(arg) || "--exec-print".equals(arg))
         {
             dryRun = true;
             run = false;
             return;
         }
 
         // Enable forked execution of Jetty server
         if ("--exec".equals(arg))
         {
             exec = true;
             return;
         }
 
         // Arbitrary Libraries
         if (arg.startsWith("--lib="))
         {
             String cp = Props.getValue(arg);
 
             if (cp != null)
             {
                 StringTokenizer t = new StringTokenizer(cp,File.pathSeparator);
                 while (t.hasMoreTokens())
                 {
                     rawLibs.add(t.nextToken());
                 }
             }
             return;
         }
 
         // Module Management
         if ("--list-modules".equals(arg))
         {
             listModules = true;
             run = false;
             return;
         }
 
         // jetty.base build-out : add to ${jetty.base}/start.d/
         if (arg.startsWith("--add-to-startd="))
         {
             addToStartdIni.addAll(Props.getValues(arg));
             run = false;
             download = true;
             return;
         }
 
         // jetty.base build-out : add to ${jetty.base}/start.ini
         if (arg.startsWith("--add-to-start="))
         {
             addToStartIni.addAll(Props.getValues(arg));
             run = false;
             download = true;
             return;
         }
 
         // Enable a module
         if (arg.startsWith("--module="))
         {
             for (String moduleName : Props.getValues(arg))
             {
                 modules.add(moduleName);
                 List<String> list = sources.get(moduleName);
                 if (list == null)
                 {
                     list = new ArrayList<String>();
                     sources.put(moduleName,list);
                 }
                 list.add(source);
             }
             return;
         }
 
         // Create graphviz output of module graph
         if (arg.startsWith("--write-module-graph="))
         {
             this.moduleGraphFilename = Props.getValue(arg);
             run = false;
             return;
         }
 
         // Start property (syntax similar to System property)
         if (arg.startsWith("-D"))
         {
             String[] assign = arg.substring(2).split("=",2);
             systemPropertyKeys.add(assign[0]);
             switch (assign.length)
             {
                 case 2:
                     System.setProperty(assign[0],assign[1]);
                     setProperty(assign[0],assign[1],source);
                     break;
                 case 1:
                     System.setProperty(assign[0],"");
                     setProperty(assign[0],"",source);
                     break;
                 default:
                     break;
             }
             return;
         }
 
         // Anything else with a "-" is considered a JVM argument
         if (arg.startsWith("-"))
         {
             // Only add non-duplicates
             if (!jvmArgs.contains(arg))
             {
                 jvmArgs.add(arg);
             }
             return;
         }
 
         // Is this a raw property declaration?
         int idx = arg.indexOf('=');
         if (idx >= 0)
         {
             String key = arg.substring(0,idx);
             String value = arg.substring(idx + 1);
 
             if (propertySource.containsKey(key))
             {
                 StartLog.warn("Property %s in %s already set in %s",key,source,propertySource.get(key));
             }
             propertySource.put(key,source);
 
             if ("OPTION".equals(key) || "OPTIONS".equals(key))
             {
                 StringBuilder warn = new StringBuilder();
                 warn.append("The behavior of the argument ");
                 warn.append(arg).append(" (seen in ").append(source);
                 warn.append(") has changed, and is now considered a normal property.  ");
                 warn.append(key).append(" no longer controls what libraries are on your classpath,");
                 warn.append(" use --module instead. See --help for details.");
                 StartLog.warn(warn.toString());
             }
 
             setProperty(key,value,source);
             return;
         }
 
         // Is this an xml file?
         if (FS.isXml(arg))
         {
             // only add non-duplicates
             if (!xmlRefs.contains(arg))
             {
                 xmlRefs.add(arg);
             }
             return;
         }
         
         if (FS.isPropertyFile(arg))
         {
             // only add non-duplicates
             if (!propertyFileRefs.contains(arg))
             {
             	propertyFileRefs.add(arg);
             }
         	return;
         }
 
         // Anything else is unrecognized
         throw new UsageException(ERR_BAD_ARG,"Unrecognized argument: \"%s\" in %s",arg,source);
     }
 
     public void resolveExtraXmls(BaseHome baseHome) throws IOException
     {
         // Find and Expand XML files
         for (String xmlRef : xmlRefs)
         {
             // Straight Reference
             Path xmlfile = baseHome.getPath(xmlRef);
             if (!FS.exists(xmlfile))
             {
                 xmlfile = baseHome.getPath("etc/" + xmlRef);
             }
             addUniqueXmlFile(xmlRef,xmlfile);
         }
     }
     
     public void resolvePropertyFiles(BaseHome baseHome) throws IOException
     {
         // Find and Expand property files
         for (String propertyFileRef : propertyFileRefs)
         {
             // Straight Reference
             Path propertyFile = baseHome.getPath(propertyFileRef);
             if (!FS.exists(propertyFile))
             {
             	propertyFile = baseHome.getPath("etc/" + propertyFileRef);
             }
             addUniquePropertyFile(propertyFileRef,propertyFile);
         }
     }
 
     public void setAllModules(Modules allModules)
     {
         this.allModules = allModules;
     }
 
     private void setProperty(String key, String value, String source)
     {
         // Special / Prevent override from start.ini's
         if (key.equals("jetty.home"))
         {
             properties.setProperty("jetty.home",System.getProperty("jetty.home"),source);
             return;
         }
 
         // Special / Prevent override from start.ini's
         if (key.equals("jetty.base"))
         {
             properties.setProperty("jetty.base",System.getProperty("jetty.base"),source);
             return;
         }
 
         // Normal
         properties.setProperty(key,value,source);
     }
 
     public void setRun(boolean run)
     {
         this.run = run;
     }
 
     @Override
     public String toString()
     {
         StringBuilder builder = new StringBuilder();
         builder.append("StartArgs [enabledModules=");
         builder.append(modules);
         builder.append(", xmlRefs=");
         builder.append(xmlRefs);
         builder.append(", properties=");
         builder.append(properties);
         builder.append(", jvmArgs=");
         builder.append(jvmArgs);
         builder.append("]");
         return builder.toString();
     }
 }