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package org.graphwalker.java.source;

/*
 * #%L
 * GraphWalker Java
 * %%
 * Copyright (C) 2005 - 2014 GraphWalker
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */

import org.apache.commons.io.FilenameUtils;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;

/**
 * @author Nils Olsson
 */
public final class SourceFile {

  private static final Path DEFAULT_PATH = Paths.get("/");
  private final Path inputPath;
  private final Path relativePath;
  private final Path outputPath;
  private final String packageName;
  private final String className;

  public SourceFile(String modelName, Path path) {
    this(modelName, path, DEFAULT_PATH, DEFAULT_PATH);
  }

  public SourceFile(Path inputPath, Path basePath, Path outputPath) {
    this(getModelName(inputPath), inputPath, basePath, outputPath);
  }

  public SourceFile(String modelName, Path inputPath, Path basePath, Path outputPath) {
    this.className = modelName;
    this.inputPath = inputPath;
    this.relativePath = basePath.relativize(inputPath);
    if (null != this.relativePath.getParent()) {
      this.packageName = this.relativePath.getParent().toString()
        .replace(File.separator, ".").replaceAll(" ", "_");
    } else {
      this.packageName = "";
    }
    this.outputPath = outputPath.resolve(this.relativePath).resolveSibling(this.className + ".java");
  }

  public Path getInputPath() {
    return inputPath;
  }

  public Path getRelativePath() {
    return relativePath;
  }

  public Path getOutputPath() {
    return outputPath;
  }

  public String getPackageName() {
    return this.packageName;
  }

  private static String getModelName(Path inputPath) {
    return removeExtension(inputPath.getFileName().toString());
  }

  private static String removeExtension(final String filename) {
    String ext = FilenameUtils.getExtension(filename);
    if ("".equals(ext)) {
      return filename;
    }
    final int index = filename.lastIndexOf(ext) - 1;
    return filename.substring(0, index);
  }

  public String getClassName() {
    return className;
  }
}