src/main/java/net/pterodactylus/rhynodge/filters/webpages/savoy/SavoyTicketsFilter.java

   1 package net.pterodactylus.rhynodge.filters.webpages.savoy;
   2
   3 import static com.google.common.base.Preconditions.checkArgument;
   4 import static java.time.format.DateTimeFormatter.ofPattern;
   5 import static java.util.Optional.empty;
   6 import static java.util.Optional.of;
   7 import static net.pterodactylus.rhynodge.filters.webpages.savoy.Movie.byName;
   8 import static net.pterodactylus.rhynodge.filters.webpages.savoy.Movie.withPerformances;
   9 import static net.pterodactylus.rhynodge.filters.webpages.savoy.Performance.byTime;
  10 import static org.jsoup.nodes.Document.createShell;
  11 import static org.jsoup.parser.Tag.valueOf;
  12
  13 import java.time.LocalDate;
  14 import java.time.format.DateTimeFormatter;
  15 import java.util.Collection;
  16 import java.util.List;
  17 import java.util.Optional;
  18 import java.util.stream.Collectors;
  19
  20 import net.pterodactylus.rhynodge.Filter;
  21 import net.pterodactylus.rhynodge.State;
  22 import net.pterodactylus.rhynodge.states.HtmlState;
  23 import net.pterodactylus.rhynodge.states.OutputState;
  24
  25 import org.apache.log4j.Logger;
  26 import org.jetbrains.annotations.NotNull;
  27 import org.jsoup.nodes.Document;
  28 import org.jsoup.nodes.Element;
  29 import org.jsoup.nodes.Node;
  30
  31 /**
  32  * {@link Filter} implementation that creates a list of movies running at the
  33  * Savoy theatre in Hamburg.
  34  *
  35  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  36  */
  37 public class SavoyTicketsFilter implements Filter {
  38
  39         private static final MovieExtractor movieExtractor = new MovieExtractor();
  40         private DateTimeFormatter dateFormatter = ofPattern("dd.MM.uuuu");
  41         private DateTimeFormatter timeFormatter = ofPattern("HH:mm");
  42         private DateTimeFormatter dateTimeFormatter = ofPattern("dd.MM.uuuu, HH:mm");
  43
  44         @NotNull
  45         @Override
  46         public State filter(@NotNull State state) {
  47                 checkArgument(state instanceof HtmlState, "state must be HTML");
  48
  49                 HtmlState htmlState = (HtmlState) state;
  50                 Collection<Movie> movies = movieExtractor.getMovies(htmlState.document());
  51                 Logger.getLogger(SavoyTicketsFilter.class).debug("Parsed Movies: " + movies);
  52                 return new OutputState(getPlainTextOutput(movies), getHtmlOutput(movies));
  53         }
  54
  55         private Optional<String> getHtmlOutput(Collection<Movie> movies) {
  56                 Document document = createShell("");
  57                 document.head().appendElement("style").attr("type", "text/css").text(generateStyleSheet());
  58                 document.body().appendElement("h1").text("Kinoprogramm: Savoy");
  59                 document.body().appendElement("h2").text("Filme");
  60                 movies.stream().filter(withPerformances).sorted(byName).forEach(movie -> {
  61                         document.body().appendChild(createMovieNode(movie));
  62                 });
  63                 document.body().appendElement("h2").text("Zeiten");
  64                 movies.stream().flatMap(movie -> movie.getPerformances().stream().map(performance -> new Presentation(movie, performance))).sorted((leftPresentation, rightPresentation) -> leftPresentation.getTicketLink().getTime().compareTo(rightPresentation.getTicketLink().getTime())).collect(Collectors.<Presentation, LocalDate>groupingBy(presentation -> presentation.getTicketLink().getTime().toLocalDate())).entrySet().stream().sorted((leftEntry, rightEntry) -> leftEntry.getKey().compareTo(rightEntry.getKey())).forEach(dateEntry -> {
  65                         document.body().appendChild(createDayNode(dateEntry.getKey(), dateEntry.getValue()));
  66                 });
  67                 document.body().appendElement("h2").text("Vorschau");
  68                 movies.stream().filter(withPerformances.negate()).sorted(byName).forEach(movie -> {
  69                         document.body().appendElement("div").attr("class", "name").text(movie.getName());
  70                 });
  71                 return of(document.toString());
  72         }
  73
  74         private String generateStyleSheet() {
  75                 StringBuilder styleSheet = new StringBuilder();
  76                 styleSheet.append(".movie .name { font-weight: bold; }\n");
  77                 styleSheet.append(".day:first-child { margin-top: 1em; }\n");
  78                 styleSheet.append(".date { display: table-cell; font-weight: bold; }\n");
  79                 styleSheet.append(".presentation { display: inline; }\n");
  80                 styleSheet.append(".time, .movie { display: inline; }\n");
  81                 return styleSheet.toString();
  82         }
  83
  84         private Node createMovieNode(Movie movie) {
  85                 Element movieNode = new Element(valueOf("div"), "");
  86                 movieNode.attr("class", "movie");
  87                 movieNode.appendElement("div").attr("class", "name").text(movie.getName());
  88                 movie.getPerformances().stream().sorted(byTime).forEach(performance -> {
  89                         Element presentationNode = movieNode.appendElement("div").attr("class", "presentation");
  90                         presentationNode.appendElement("div").attr("class", "time").text("» ").appendElement("a").attr("href", performance.getLink()).text(performance.getTime().format(dateTimeFormatter));
  91                 });
  92                 return movieNode;
  93         }
  94
  95         private Node createDayNode(LocalDate date, List<Presentation> presentations) {
  96                 Element dayNode = new Element(valueOf("div"), "").attr("class", "day");
  97                 dayNode.appendElement("div").attr("class", "date").text(date.format(dateFormatter));
  98                 presentations.stream().forEach(presentation -> {
  99                         Element presentationNode = dayNode.appendElement("div").attr("class", "presentation");
 100                         presentationNode.appendElement("div").attr("class", "time").text("» " + presentation.getTicketLink().getTime().format(timeFormatter));
 101                         presentationNode.appendElement("div").attr("class", "movie").appendElement("a").attr("href", presentation.getTicketLink().getLink()).text(presentation.getMovie().getName());
 102                 });
 103                 return dayNode;
 104         }
 105
 106         private Optional<String> getPlainTextOutput(Collection<Movie> movies) {
 107                 return empty();
 108         }
 109
 110         private static class Presentation {
 111
 112                 private final Movie movie;
 113                 private final Performance performance;
 114
 115                 private Presentation(Movie movie, Performance performance) {
 116                         this.movie = movie;
 117                         this.performance = performance;
 118                 }
 119
 120                 private Movie getMovie() {
 121                         return movie;
 122                 }
 123
 124                 private Performance getTicketLink() {
 125                         return performance;
 126                 }
 127
 128         }
 129
 130 }