import static java.nio.file.FileVisitResult.CONTINUE;

import java.io.IOException;

import java.nio.file.FileSystems;

import java.nio.file.FileVisitResult;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.attribute.BasicFileAttributes;

import java.util.Stack;

import java.util.Vector;

public class FileTreeCreatorVC7 extends FileTreeCreator {

      public FileTreeCreatorVC7(Path startDir, Vector<BuildConfig> allConfigs, WinGammaPlatform wg) {

         super(startDir, allConfigs, null);

      }

      @Override

      public FileVisitResult visitFile(Path file, BasicFileAttributes attr) {

         DirAttributes currentFileAttr = attributes.peek().clone();

         boolean usePch = false;

         boolean disablePch = false;

         boolean useIgnore = false;

         String fileName = file.getFileName().toString();

         // usePch applies to all configs for a file.

         if (fileName.equals(BuildConfig.getFieldString(null, "UseToGeneratePch"))) {

            usePch = true;

         }

         for (BuildConfig cfg : allConfigs) {

            if (cfg.lookupHashFieldInContext("IgnoreFile", fileName) != null) {

               useIgnore = true;

               currentFileAttr.setIgnore(cfg);

            } else if (cfg.matchesIgnoredPath(file.toAbsolutePath().toString())) {

               useIgnore = true;

               currentFileAttr.setIgnore(cfg);

            }

            if (cfg.lookupHashFieldInContext("DisablePch", fileName) != null) {

               disablePch = true;

               currentFileAttr.setDisablePch(cfg);

            }

            Vector<String> rv = new Vector<String>();

            cfg.collectRelevantVectors(rv, "AdditionalFile");

            for(String addFile : rv) {

               if (addFile.equals(fileName)) {

                  // supress any ignore

                  currentFileAttr.removeFromIgnored(cfg);

               }

            }

         }

         if (!useIgnore && !disablePch && !usePch) {

            wg.tag("File", new String[] { "RelativePath", vcProjLocation.relativize(file).toString()});

         } else {

            wg.startTag(

                  "File",

                  new String[] { "RelativePath", vcProjLocation.relativize(file).toString()});

            for (BuildConfig cfg : allConfigs) {

               boolean ignore = currentFileAttr.hasIgnore(cfg);

               String [] fileConfAttr;

               if (ignore) {

                  fileConfAttr = new String[] {"Name", cfg.get("Name"), "ExcludedFromBuild", "TRUE" };

               } else {

                  fileConfAttr = new String[] {"Name", cfg.get("Name")};

               }

               if (!disablePch && !usePch && !ignore) {

                  continue;

               } else if (!disablePch && !usePch) {

                  wg.tag("FileConfiguration", fileConfAttr);

               } else {

                  wg.startTag("FileConfiguration", fileConfAttr);

                  if (usePch) {

                     // usePch always applies to all configs, might not always be so.

                     wg.tag("Tool", new String[] {

                           "Name", "VCCLCompilerTool", "UsePrecompiledHeader",

                     "1" });

                     assert(!disablePch);

                  }

                  if (disablePch) {

                     if (currentFileAttr.hasDisablePch(cfg)) {

                        wg.tag("Tool", new String[] {

                              "Name", "VCCLCompilerTool", "UsePrecompiledHeader",

                        "0" });

                     }

                     assert(!usePch);

                  }

                  wg.endTag();

               }

            }

            wg.endTag();

         }

         return CONTINUE;

      }

      @Override

      public FileVisitResult preVisitDirectory(Path path, BasicFileAttributes attrs)

            throws IOException {

         Boolean hide = false;

         DirAttributes newAttr = attributes.peek().clone();

         String rPath;

         if (path.toAbsolutePath().toString().equals(this.startDir.toAbsolutePath().toString())){

            rPath = startDir.toString();

         } else {

            rPath = path.getFileName().toString();

         }

         // check per config ignorePaths!

         for (BuildConfig cfg : allConfigs) {

            if (cfg.matchesIgnoredPath(path.toAbsolutePath().toString())) {

               newAttr.setIgnore(cfg);

            }

            // Hide is always on all configs. And additional files are never hiddden

            if (cfg.matchesHidePath(path.toAbsolutePath().toString())) {

               hide = true;

               break;

            }

         }

         if (!hide) {

            wg.startTag("Filter", new String[] {

                  "Name", rPath});

            attributes.push(newAttr);

            return super.preVisitDirectory(path, attrs);

         } else {

            return FileVisitResult.SKIP_SUBTREE;

         }

      }

      @Override

      public FileVisitResult postVisitDirectory(Path dir, IOException exc) {

         //end matching attributes set by ignorepath

         wg.endTag();

         attributes.pop();

         return CONTINUE;

      }

      @Override

      public FileVisitResult visitFileFailed(Path file, IOException exc) {

         return CONTINUE;

      }

      public void writeFileTree() throws IOException {

         Files.walkFileTree(this.startDir, this);

      }

   }