NewsSection.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2018 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.publication.entity;
 
import java.io.IOException;
import java.io.Writer;
import java.util.TreeSet;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.ManyToOne;
import org.turro.string.Strings;
import org.turro.action.content.ContentContext;
import org.turro.action.content.ContentProviders;
import org.turro.action.content.ContentRenderer;
import org.turro.jpa.entity.IDaoEntity;
import org.turro.plugin.contacts.IContact;
import org.turro.util.CompareUtil;
 
@Entity
public class NewsSection implements java.io.Serializable, IDaoEntity, Comparable<NewsSection> {
  
  @Id
  @GeneratedValue(strategy=GenerationType.IDENTITY)
  @Column(name="IDENTIFIER")
  private Long id;
  
  @ManyToOne
  private Newsletter newsletter;
  
  private int newsOrder;
  
  private boolean newColumn, useAsTrigger, hideIfEmpty;
  
  private String width;
  
  private NewsSectionType type;
 
  @Lob
  @Column(length=4096)
  private String banner;
 
  @Lob
  @Column(length=4096)
  private String body;
 
  @Lob
  @Column(length=4096)
  private String wiki;
 
  public Long getId() {
    return id;
  }
 
  public void setId(Long id) {
    this.id = id;
  }
 
  public Newsletter getNewsletter() {
    return newsletter;
  }
 
  public void setNewsletter(Newsletter newsletter) {
    this.newsletter = newsletter;
  }
 
  public int getNewsOrder() {
    return newsOrder;
  }
 
  public void setNewsOrder(int newsOrder) {
    this.newsOrder = newsOrder;
  }
 
  public boolean isNewColumn() {
    return newColumn;
  }
 
  public void setNewColumn(boolean newColumn) {
    this.newColumn = newColumn;
  }
 
  public boolean isUseAsTrigger() {
    return useAsTrigger;
  }
 
  public void setUseAsTrigger(boolean useAsTrigger) {
    this.useAsTrigger = useAsTrigger;
  }
 
  public boolean isHideIfEmpty() {
    return hideIfEmpty;
  }
 
  public void setHideIfEmpty(boolean hideIfEmpty) {
    this.hideIfEmpty = hideIfEmpty;
  }
 
  public String getWidth() {
    return width;
  }
 
  public void setWidth(String width) {
    this.width = width;
  }
 
  public String getBanner() {
    return banner;
  }
 
  public void setBanner(String banner) {
    this.banner = banner;
  }
 
  public NewsSectionType getType() {
    return type;
  }
 
  public void setType(NewsSectionType type) {
    this.type = type;
  }
 
  public String getBody() {
    return body;
  }
 
  public void setBody(String body) {
    this.body = body;
  }
  
  public String getWiki() {
    return wiki;
  }
 
  public void setWiki(String wiki) {
    this.wiki = wiki;
  }
 
  /* IDaoEntity */
  
  @Override
  public Object entityId() {
    return id;
  }
 
  @Override
  public boolean isEmpty() {
    return Strings.isBlank(body);
  }
  
  public boolean canShow(IContact contact) {
    loadBody(contact);
    return !(isHideIfEmpty() && isEmptyContent());
  }
  
  public boolean isEmptyContent() {
    if(NewsSectionType.NEWS_SECTION_EXTERNAL.equals(type)) {
      return content != null ? content.getIterator().isEmpty() : true;
    }
    return isEmpty();
  }
  
  public void generateSection(Writer template) throws IOException {
    boolean firstColumn = false;
    boolean lastColumn = false;
    if(isNewColumn()) {
      firstColumn = newsletter.checkStartRow(this);
      lastColumn = newsletter.checkEndRow(this);
      if(firstColumn) {
        template.write("<@start_row/>\n");
        template.write("<@start_column/>\n");
        template.write("<@start_full_table \"0\" \"0\"/>\n");
        template.write("<@start_row/>\n");
      }
      template.write("<@start_stackable style=\"width:" + getColumnWidth(this) + "\"/>\n");
    } else {
      template.write("<@start_row/>\n");
      template.write("<@start_column/>\n");
    }
    
    if(!Strings.isBlank(banner)) {
      if(NewsSectionType.NEWS_SECTION_IMAGE.equals(type)) {
        template.write("<a target='_blank' href='" + banner + "'>");
      } else {
        template.write(banner);
      }
    }
    
    if(NewsSectionType.NEWS_SECTION_EXTERNAL.equals(type)) {
      template.write("${newsSection" + newsOrder + ".generateBody()}\n");
    } else {
      template.write("${newsSection" + newsOrder + ".body}\n");
    }
    
    if(!Strings.isBlank(banner)) {
      if(NewsSectionType.NEWS_SECTION_IMAGE.equals(type)) {
        template.write("</a>");
      }
    }
    
    if(isNewColumn() && !lastColumn) {
      template.write("<@stackable_divider/>");
    }
    
    template.write("<@end_column/>\n");
    
    if(isNewColumn()) {
      if(lastColumn) {
        template.write("<@end_row/>\n");
        template.write("<@end_table/>\n");
        template.write("<@end_column/>\n");
        template.write("<@end_row/>\n");
        template.write("<@row_summary_divider height=\"20px\"/>");
      } 
    } else {
      template.write("<@end_row/>\n");
      template.write("<@row_summary_divider height=\"20px\"/>");
    }
  }
  
  private transient ContentRenderer content;
  
  public void loadBody(IContact contact) {
    if(content == null && NewsSectionType.NEWS_SECTION_EXTERNAL.equals(type)) {
      content = ContentProviders.loadCommand(body, contact, getUniqueId());
    }
  }
  
  public String generateBody() {
    if(NewsSectionType.NEWS_SECTION_EXTERNAL.equals(type)) {
      return content != null ? content.execute() : "";
    }
    return "";
  }
  
  public void reset() {
    content = null;
  }
  
  public void resetGlobalContext() {
    ContentContext.removeContent(getUniqueId());
  }
  
  public String getUniqueId() {
    return "NewsSection" + getId();
  }
  
  @Override
  public int compareTo(NewsSection o) {
    int result = CompareUtil.compare(newsOrder, o.newsOrder);
    if(result == 0 && id != null && o.id != null) {
      result = CompareUtil.compare(id, o.id);
    }
    return result;
  }
 
  private String getColumnWidth(NewsSection section) {
    if(!Strings.isBlank(section.getWidth())) {
      return section.getWidth();
    }
    TreeSet<NewsSection> sections = new TreeSet(newsletter.getNewsSections());
    int count = 0;
    boolean iAmIn = false;
    for(NewsSection ns : sections) {
      if(ns.isNewColumn()) {
        if(ns.getNewsOrder() == section.getNewsOrder()) {
          iAmIn = true;
        }
        count++;
      } else {
        if(iAmIn) {
          return (100 / count) + "%";
        }
        count = 0;
      }
    }
    if(iAmIn && count > 0) {
      return (100 / count) + "%";
    }
    return "100%";
  }
  
}