war/src/main/java/pnews/servlet/HTML.java

   1 package pnews.servlet;
   2
   3 import java.io.IOException;
   4 import java.io.UnsupportedEncodingException;
   5 import java.net.URLEncoder;
   6 import java.util.List;
   7 import java.util.logging.Level;
   8 import java.util.logging.Logger;
   9
  10 import com.rometools.rome.io.FeedException;
  11
  12 import pnews.Article;
  13 import pnews.Category;
  14 import pnews.EntityStat;
  15 import pnews.Language;
  16
  17 public class HTML {
  18         private static final String CLASS_NAME= HTML.class.getName();
  19         private static final Logger LOG = Logger.getLogger(CLASS_NAME);
  20
  21         private static void appendA(StringBuffer buf, String child, String href, String cl) {
  22                 buf.append("<a href='");
  23                 buf.append(href);
  24                 buf.append("'");
  25                 if (cl != null) {
  26                         buf.append(" class='");
  27                         buf.append(cl);
  28                         buf.append('\'');
  29                 }
  30                 buf.append('>');
  31                 buf.append(child);
  32                 buf.append("</a>");
  33         }
  34
  35         private static void appendDiv(StringBuffer buf, String child) {
  36                 buf.append("<div>");
  37                 buf.append(child);
  38                 buf.append("</div>\n");
  39         }
  40
  41         private static void appendP(StringBuffer buf, String child) {
  42                 buf.append("<p>");
  43                 buf.append(child);
  44                 buf.append("</p>\n");
  45         }
  46
  47         private static void append(StringBuffer buf, Article a) throws UnsupportedEncodingException {
  48                 buf.append("<div class='article'>\n");
  49
  50                 buf.append("<div class='article-image'>\n");
  51                 if (a.thumbnail != null) {
  52                         buf.append("<img class='left' src='");
  53                         buf.append(a.thumbnail);
  54                         buf.append("'/>\n");
  55                 }
  56                 buf.append("</div>\n");
  57
  58                 buf.append("<div class='article-content'>\n");
  59
  60                 buf.append("<div class='article-title'>\n");
  61                 appendA(buf, a.title, "/redirect?url=" + URLEncoder.encode(a.link, "UTF-8"), null);
  62                 buf.append("</div>\n");
  63
  64                 buf.append("<div class='article-info'>" + a.website + " - " + a.publicationDate + "</div>");
  65
  66                 buf.append("<div class='article-description'>\n");
  67                 if (a.description != null) {
  68                         buf.append("<p>");
  69                         buf.append(a.description);
  70                         buf.append("</p>");
  71                 }
  72                 buf.append("</div>\n");
  73
  74                 buf.append("</div>\n");
  75
  76                 buf.append("</div>\n");
  77         }
  78
  79         private static void appendMenu(StringBuffer buf, Category catActive, Config cfg) {
  80                 String cl;
  81
  82                 buf.append("<nav>\n");
  83                 buf.append("<ul>\n");
  84
  85                 for (Category cat: cfg.getCategories()) {
  86                         if (!cat.getLanguage().equals(catActive.getLanguage()))
  87                                 continue;
  88
  89                         buf.append("<li>");
  90
  91                         if (cat.equals(catActive))
  92                                 cl = "active";
  93                         else
  94                                 cl = null;
  95
  96                         appendA(buf, cat.getLabel(), cat.getURL(), cl);
  97                         buf.append("</li>");
  98                 }
  99
 100                 for (Language l: cfg.getLanguages())
 101                         buf.append("<li><a href='" + l.toURL() + "'>" + l.getLabel() + "</a></li>");
 102
 103                 buf.append("</ul>\n");
 104
 105                 buf.append("</nav>\n");
 106         }
 107
 108         private static String toURL(Category catActive, String entity) {
 109                 try {
 110                         return catActive.getURL() + "?entity=" + URLEncoder.encode(entity, "UTF-8");
 111                 } catch (UnsupportedEncodingException e) {
 112                         LOG.log(Level.SEVERE, "Failed to generate link to entity " + entity, e);
 113                         return catActive.getURL();
 114                 }
 115         }
 116
 117         public static String toHTML(List<Article> articles, Category catActive, String entityActive, Config cfg, ArticleProvider provider) {
 118                 StringBuffer buf;
 119                 int i;
 120                 List<EntityStat> entities;
 121                 String cl;
 122
 123                 buf = new StringBuffer();
 124                 buf.append("<!DOCTYPE html>\n");
 125                 buf.append("<html lang='fr'>\n");
 126                 buf.append("<head>\n");
 127                 buf.append("<meta charset=\"UTF-8\">\n");
 128                 buf.append("<link rel='stylesheet' href='/style.css' />\n");
 129                 buf.append("<title>");
 130                 buf.append(catActive.getTitle());
 131                 buf.append(" - PNews</title>\n");
 132                 buf.append("</head>\n");
 133                 buf.append("<body>\n");
 134
 135                 appendMenu(buf, catActive, cfg);
 136
 137                 try {
 138                         entities = provider.getEntityStats(catActive);
 139
 140                         if (entities.size() > 0) {
 141                                 buf.append("<nav>");
 142                                 buf.append("<ul>");
 143                                 i = 0;
 144                                 for (EntityStat s: entities) {
 145                                         buf.append("<li>");
 146                                         if (entityActive != null && s.getEntity().equals(entityActive))
 147                                                 cl = "active";
 148                                         else
 149                                                 cl = null;
 150                                         appendA(buf, s.getEntity(), toURL(catActive, s.getEntity()), cl);
 151                                         buf.append("</li>\n");
 152                                         i++;
 153                                         if (i > 10)
 154                                                 break;
 155                                 }
 156                                 buf.append("</ul>\n");
 157                                 buf.append("</nav>\n");
 158                         }
 159                 } catch (IllegalArgumentException | FeedException | IOException e2) {
 160                         LOG.log(Level.SEVERE, "Failed to get entities", e2);
 161                 }
 162
 163                 i = 0;
 164                 for (Article e: articles) {
 165                         try {
 166                                 append(buf, e);
 167                         } catch (UnsupportedEncodingException e1) {
 168                                 LOG.log(Level.SEVERE, "Failed to convert article to HTML", e1);
 169                         }
 170                         if (i == 100)
 171                                 break;
 172                         else
 173                                 i++;
 174                 }
 175
 176                 buf.append("</body>\n");
 177                 buf.append("</html>\n");
 178
 179                 return buf.toString();
 180         }
 181 }