/*
 * Copyright (C) 2010 Google Inc.
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 *
 * 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 com.google.doclava;

import com.google.clearsilver.jsilver.data.Data;

import java.util.*;
import java.io.*;


public class SampleCode {
  String mSource;
  String mDest;
  String mTitle;

  public SampleCode(String source, String dest, String title) {
    mSource = source;
    mTitle = title;
    int len = dest.length();
    if (len > 1 && dest.charAt(len - 1) != '/') {
      mDest = dest + '/';
    } else {
      mDest = dest;
    }
  }

  public void write(boolean offlineMode) {
    File f = new File(mSource);
    if (!f.isDirectory()) {
      System.out.println("-samplecode not a directory: " + mSource);
      return;
    }
    
    writeDirectory(f, mDest, offlineMode);
  }

  public static String convertExtension(String s, String ext) {
    return s.substring(0, s.lastIndexOf('.')) + ext;
  }

  public static String[] IMAGES = {".png", ".jpg", ".gif"};
  public static String[] TEMPLATED = {".java", ".xml", ".aidl", ".rs"};

  public static boolean inList(String s, String[] list) {
    for (String t : list) {
      if (s.endsWith(t)) {
        return true;
      }
    }
    return false;
  }
  
  public void writeDirectory(File dir, String relative) {
    writeDirectory(dir, relative, false);
  }

  public void writeDirectory(File dir, String relative, boolean offline) {
    TreeSet<String> dirs = new TreeSet<String>();
    TreeSet<String> files = new TreeSet<String>();

    String subdir = relative; // .substring(mDest.length());

    for (File f : dir.listFiles()) {
      String name = f.getName();
      if (name.startsWith(".") || name.startsWith("_")) {
        continue;
      }
      if (f.isFile()) {
        String out = relative + name;

        if (inList(out, IMAGES)) {
          // copied directly
          ClearPage.copyFile(f, out);
          writeImagePage(f, convertExtension(out, Doclava.htmlExtension), subdir);
          files.add(name);
        }
        if (inList(out, TEMPLATED)) {
          // copied and goes through the template
          ClearPage.copyFile(f, out);
          writePage(f, convertExtension(out, Doclava.htmlExtension), subdir);
          files.add(name);
        }
        // else ignored
      } else if (f.isDirectory()) {
        writeDirectory(f, relative + name + "/", offline);
        dirs.add(name);
      }
    }

    // write the index page
    int i;

    Data hdf = writeIndex(dir);
    hdf.setValue("subdir", subdir);
    i = 0;
    for (String d : dirs) {
      hdf.setValue("subdirs." + i + ".name", d);
      i++;
    }
    i = 0;
    for (String f : files) {
      hdf.setValue("files." + i + ".name", f);
      hdf.setValue("files." + i + ".href", convertExtension(f, ".html"));
      i++;
    }

    if (!offline) relative = "/" + relative;
    ClearPage.write(hdf, "sampleindex.cs", relative + "index" + Doclava.htmlExtension);
  }

  public Data writeIndex(File dir) {
    Data hdf = Doclava.makeHDF();

    hdf.setValue("page.title", dir.getName() + " - " + mTitle);
    hdf.setValue("projectTitle", mTitle);

    String filename = dir.getPath() + "/_index.html";
    String summary =
        SampleTagInfo.readFile(new SourcePositionInfo(filename, -1, -1), filename, "sample code",
            true, false, true);

    if (summary == null) {
      summary = "";
    }
    hdf.setValue("summary", summary);

    return hdf;
  }

  public void writePage(File f, String out, String subdir) {
    String name = f.getName();

    String filename = f.getPath();
    String data =
        SampleTagInfo.readFile(new SourcePositionInfo(filename, -1, -1), filename, "sample code",
            true, true, true);
    data = Doclava.escape(data);

    Data hdf = Doclava.makeHDF();

    hdf.setValue("page.title", name);
    hdf.setValue("subdir", subdir);
    hdf.setValue("realFile", name);
    hdf.setValue("fileContents", data);

    ClearPage.write(hdf, "sample.cs", out);
  }

  public void writeImagePage(File f, String out, String subdir) {
    String name = f.getName();

    String data = "<img src=\"" + name + "\" title=\"" + name + "\" />";

    Data hdf = Doclava.makeHDF();

    hdf.setValue("page.title", name);
    hdf.setValue("subdir", subdir);
    hdf.setValue("realFile", name);
    hdf.setValue("fileContents", data);

    ClearPage.write(hdf, "sample.cs", out);
  }
}