/*
    *    Copyright 2010-2022 the original author or authors.
    *
    *    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
    *
    *       https://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 org.mybatis.maven.mvnmigrate.report;
  
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.ResourceBundle;
  
  import org.apache.ibatis.migration.Change;
  import org.apache.maven.doxia.sink.Sink;
  import org.apache.maven.project.MavenProject;
  
  /**
   * View of status report.
   */
  public final class MigrationStatusReportView {
  
    /**
     * Generates the report.
     *
     * @param changes
     *          list of {@link Change}
     * @param sink
     *          the {@link Sink} instance
     * @param bundle
     *          the {@link ResourceBundle} instance
     */
    public void generateReport(Map<MavenProject, List<Change>> changes, Sink sink, ResourceBundle bundle,
        boolean isAggregate) {
  
      sink.head();
      sink.title();
      sink.text(bundle.getString("migration.status.report.header"));
      sink.title_();
      sink.head_();
      sink.body();
  
      // Generate title
      sink.section1();
      sink.sectionTitle1();
      sink.text(bundle.getString("migration.status.report.mainTitle"));
      sink.sectionTitle1_();
      sink.section1_();
      sink.lineBreak();
  
      sink.section2();
      sink.sectionTitle2();
      sink.text(bundle.getString("migration.status.report.secondSectionTitle"));
      sink.sectionTitle2_();
  
      for (Entry<MavenProject, List<Change>> entries : changes.entrySet()) {
        if (isAggregate) {
          sink.section3();
          sink.sectionTitle3();
          sink.text(bundle.getString("migration.status.report.moduleTitle") + entries.getKey().getName());
          sink.sectionTitle3_();
        }
        generateStatisticsTable(sink, entries.getValue());
      }
  
      sink.section2_();
      sink.lineBreak();
  
      sink.section3();
      sink.sectionTitle2();
      sink.text(bundle.getString("migration.status.report.thirdSectionTitle"));
      sink.sectionTitle2_();
      for (Entry<MavenProject, List<Change>> entries : changes.entrySet()) {
        if (isAggregate) {
          sink.section3();
          sink.sectionTitle3();
          sink.text(bundle.getString("migration.status.report.moduleTitle") + entries.getKey().getName());
          sink.sectionTitle3_();
        }
        // Generate Unused declared dependencies:
        generateChangesTable(sink, entries.getValue());
      }
  
      sink.section3_();
  
      // Closing the report
      sink.body_();
      sink.flush();
      sink.close();
    }
 
   /**
    * Generates statistic table.
    *
    * @param sink
    *          the sink
    * @param changes
    *          the changes
    */
   private void generateStatisticsTable(Sink sink, List<Change> changes) {
     sink.table();
 
     sink.tableRow();
     sink.tableCell();
     sink.text(" Number of migration changes: ");
     sink.tableCell_();
 
     sink.tableCell();
     sink.text("" + changes.size());
     sink.tableCell_();
     sink.tableRow_();
 
     sink.tableRow();
     sink.tableCell();
     sink.text(" Number of pending migrations: ");
     sink.tableCell_();
 
     int nop = numberOfPending(changes);
 
     sink.tableCell();
     sink.text(nop + "  (" + calcPerc(changes.size(), nop) + ")  ");
     sink.nonBreakingSpace();
     sink.figure();
     sink.figureGraphics(nop == 0 ? "images/icon_success_sml.gif" : "images/icon_warning_sml.gif");
     sink.figure_();
     sink.tableCell_();
     sink.tableRow_();
 
     sink.table_();
   }
 
   /**
    * Calculates the percentage.
    *
    * @param tot
    *          the tot
    * @param nop
    *          the nop
    *
    * @return the string
    */
   private String calcPerc(int tot, int nop) {
     return "" + ((100 * nop) / tot) + "%";
   }
 
   /**
    * Return the number of pending change found.
    *
    * @param changes
    *          list of {@link Change}
    *
    * @return Return the number of pending change found.
    */
   private int numberOfPending(List<Change> changes) {
     int numberOfPending = 0;
     for (Change change : changes) {
       if (change.getAppliedTimestamp() == null) {
         numberOfPending++;
       }
     }
     return numberOfPending;
   }
 
   /**
    * Generate a table for the given dependencies iterator.
    *
    * @param sink
    *          the {@link Sink} instance
    * @param iter
    *          list of {@link Change}
    */
   public void generateChangesTable(Sink sink, List<Change> iter) {
     sink.table();
 
     sink.tableRow();
     sink.tableCell();
     sink.bold();
     sink.text("ID");
     sink.bold_();
     sink.tableCell_();
 
     sink.tableCell();
     sink.bold();
     sink.text("Applied At");
     sink.bold_();
     sink.tableCell_();
 
     sink.tableCell();
     sink.bold();
     sink.text("Description");
     sink.bold_();
     sink.tableCell_();
 
     sink.tableCell();
     sink.bold();
     sink.text("Filename");
     sink.bold_();
     sink.tableCell_();
 
     sink.tableCell();
     sink.bold();
     sink.text("Status");
     sink.bold_();
     sink.tableCell_();
 
     sink.tableRow_();
 
     for (Change change : iter) {
       sink.tableRow();
 
       sink.tableCell();
       sink.text("" + change.getId());
       sink.tableCell_();
 
       sink.tableCell();
       sink.text(change.getAppliedTimestamp() == null ? " ... pending ... " : change.getAppliedTimestamp());
       sink.tableCell_();
 
       sink.tableCell();
       sink.text(change.getDescription());
       sink.tableCell_();
 
       sink.tableCell();
       sink.text(change.getFilename());
       sink.tableCell_();
 
       sink.tableCell();
       sink.figure();
       sink.figureGraphics(
           change.getAppliedTimestamp() != null ? "images/icon_success_sml.gif" : "images/icon_warning_sml.gif");
       sink.figure_();
       sink.tableCell_();
 
       sink.tableRow_();
     }
 
     sink.table_();
     sink.horizontalRule();
   }
 
 }