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