/*
 *
 * Copyright 2004-2008 The Ant-Contrib project
 *
 *  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 net.sf.antcontrib.cpptasks.ide;

import net.sf.antcontrib.cpptasks.CCTask;
import net.sf.antcontrib.cpptasks.CUtil;
import net.sf.antcontrib.cpptasks.TargetInfo;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.DataType;

import java.io.File;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;

/**
 *  Requests the creation of an IDE project file.  Experimental.
 *
 * Implementation status: msdev5, msdev6 and cbuilderx
 * generate reasonable project files for simple projects,
 * xcode and msdev7 and msdev71 capture source file lists and
 * a few settings.
 *
 * @author Curt Arnold
 */
public final class ProjectDef
    extends DataType {
  /**
   * Name of property that must be present or definition will be ignored. May
   * be null.
   */
  private String ifProp;

  /**
   * Name of property that must be absent or definition will be ignored. May
   * be null.
   */
  private String unlessProp;

  /**
   * Project file name.
   */
  private File outFile;

  /**
   * Project name.
   */
  private String name;

  /**
   * Fail on error.
   */
  private boolean failOnError = true;

  /**
   * Overwrite existing project file.
   */
  private boolean overwrite = true;

  /**
   * Project writer.
   */
  private ProjectWriter projectWriter;

  /**
   * Object directory.
   *
   */
  private File objDir;

    /**
     * List of dependency definitions.
     */
  private List dependencies = new ArrayList();

     /**
	  *   List of comments.
	  */
  private List comments = new ArrayList();

  /**
   * Constructor.
   *
   */
  public ProjectDef() {
  }

  /**
   * Set project type.
   *
   *
   * <table width="100%" border="1"> <thead>Supported project formats </thead>
   * <tr>
   * <td>cbuilderx</td>
   * <td>Borland C++BuilderX</td>
   * </tr>
   * <tr>
   * <td>msvc5</td>
   * <td>Microsoft Visual C++ 97</td>
   * </tr>
   * <tr>
   * <td>msvc6</td>
   * <td>Microsoft Visual C++ 6</td>
   * </tr>
   * <tr>
   * <td>msvc7</td>
   * <td>Microsoft Visual C++.NET</td>
   * </tr>
   * <tr>
   * <td>msvc71</td>
   * <td>Microsoft Visual C++.NET 2003</td>
   * </tr>
   * <tr>
   * <td>msvc8</td>
   * <td>Microsoft Visual C++ 2005</td>
   * </tr>
   * <tr>
   * <td>msvc9</td>
   * <td>Microsoft Visual C++ 2008</td>
   * </tr>
   * <tr>
   * <td>xcode</td>
   * <td>Apple Xcode</td>
   * </tr>
   * </table>
   *
   * @param value new value
   */
  public void setType(final ProjectWriterEnum value) {
    projectWriter = value.getProjectWriter();
  }

  /**
   * Sets the name for the generated project file.
   *
   * @param outfile
   *            output file name
   */
  public void setOutfile(final File outfile) {
    //
    //   if file name was empty, skip link step
    //
    if (outfile == null || outfile.toString().length() > 0) {
      outFile = outfile;
    }
  }

  /**
   * Sets whether a failure to write the project file should cause the
   * task to fail.  Default is true.
   *
   * @param value new value
   */
  public void setFailonerror(final boolean value) {
    failOnError = value;
  }

  /**
   * Sets whether an existing project file should be overwritten,
   * default is true.  If false and the project file exists,
   * the value of failonerror will determine if the task fails.
   *
   * @param value new value
   */
  public void setOverwrite(final boolean value) {
    overwrite = value;
  }

  /**
   * Gets whether an existing project file should be overwritten,
   * default is true.  If false and the project file exists,
   * the value of failonerror will determine if the task fails.
   *
   * @return value
   */
  public boolean getOverwrite() {
    return overwrite;
  }

  /**
   * Determine if this def should be used.
   *
   * Definition will be active if the "if" variable (if specified) is set and
   * the "unless" variable (if specified) is not set and that all reference
   * or extended definitions are active
   *
   * @return true if processor is active
   */
  public boolean isActive() {
    Project project = getProject();
    if (!CUtil.isActive(project, ifProp, unlessProp)) {
      return false;
    }
    return true;
  }

  /**
   * Class name for a user-supplied project writer.  Use the "type"
   * attribute to specify built-in project writer implementations.
   *
   * @param className
   *            full class name
   *
   */
  public void setClassname(final String className) {
    Object proc = null;
    try {
      Class implClass = ProjectDef.class.getClassLoader().loadClass(
          className);
      try {
        Method getInstance = implClass.getMethod("getInstance",
                                                 new Class[0]);
        proc = getInstance.invoke(null, new Object[0]);
      } catch (Exception ex) {
        proc = implClass.newInstance();
      }
    }  catch (Exception ex) {
      throw new BuildException(ex);
    }
    projectWriter = (ProjectWriter) proc;
  }

  /**
   * Sets the property name for the 'if' condition.
   *
   * The configuration will be ignored unless the property is defined.
   *
   * The value of the property is insignificant, but values that would imply
   * misinterpretation ("false", "no") will throw an exception when
   * evaluated.
   *
   * @param propName
   *            name of property
   */
  public void setIf(final String propName) {
    ifProp = propName;
  }

  /**
   * Set the property name for the 'unless' condition.
   *
   * If named property is set, the configuration will be ignored.
   *
   * The value of the property is insignificant, but values that would imply
   * misinterpretation ("false", "no") of the behavior will throw an
   * exception when evaluated.
   *
   * @param propName
   *            name of property
   */
  public void setUnless(final String propName) {
    unlessProp = propName;
  }

  /**
   * Get name.
   * @return String name
   */
  public String getName() {
    return name;
  }

  /**
   * Set name.
   * @param value String name
   */
  public void setName(final String value) {
    name = value;
  }

  /**
   * Executes the task. Compiles the given files.
   *
   * @param task cc task
   * @param sources source files (includes headers)
   * @param targets compilation targets
   * @param linkTarget link target
   */
  public void execute(final CCTask task,
                      final List sources,
                      final Hashtable targets,
                      final TargetInfo linkTarget) {
    try {
      projectWriter.writeProject(outFile,
                                 task,
                                 this,
                                 sources,
                                 targets,
                                 linkTarget);
    } catch (BuildException ex) {
      if (failOnError) {
        throw ex;
      } else {
        task.log(ex.toString());
      }
    } catch (Exception ex) {
      if (failOnError) {
        throw new BuildException(ex);
      } else {
        task.log(ex.toString());
      }
    }
  }

  /**
   * Gets the object files directory.
   * @return directory, may be null.
   */
  public File getObjdir() {
    return objDir;
  }
  /**
   * Sets the directory used for object files.  If not specified,
   * the object files directory from cc task will be used.
   * @param oDir object file directory.
   */
  public void getObjdir(final File oDir) {
    this.objDir = oDir;
  }

    /**
     *  Add a dependency definition to the project.  
     * @param dependency dependency.
     */
  public void addDependency(final DependencyDef dependency) {
        dependencies.add(dependency);

  }

  public List getDependencies() {
      return new ArrayList(dependencies);
  }


    /**
	 *  Add comment for the generated project file.
     * @param comment comment, may not be null.
     */
  public void addComment(final CommentDef comment) {
        comments.add(comment);

  }

  public List getComments() {
      return new ArrayList(comments);
  }

  /**
   * Required by documentation generator.
   */
  public void execute() {
    throw new org.apache.tools.ant.BuildException(
        "Not an actual task, but looks like one for documentation purposes");
  }

}
