REFACTOR: packages + OfferRepository

pom.xml

@@ -67,7 +67,7 @@
         <configuration>
           <archive>
             <manifest>
-              <mainClass>de.ph87.kleinanzeigen.api.Main</mainClass>
+              <mainClass>de.ph87.kleinanzeigen.Main</mainClass>
             </manifest>
           </archive>
         </configuration>

src/main/java/de/ph87/kleinanzeigen/JSON.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 

src/main/java/de/ph87/kleinanzeigen/Main.java

@@ -0,0 +1,48 @@
+package de.ph87.kleinanzeigen;
+
+import de.ph87.kleinanzeigen.kleinanzeigen.KleinanzeigenApi;
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.OfferRepository;
+import de.ph87.kleinanzeigen.telegram.TelegramBot;
+import lombok.extern.slf4j.Slf4j;
+import org.telegram.telegrambots.meta.exceptions.TelegramApiException;
+
+import java.io.IOException;
+import java.util.List;
+
+@Slf4j
+@SuppressWarnings({"InfiniteLoopStatement", "SameParameterValue", "SynchronizationOnLocalVariableOrMethodParameter"})
+public class Main {
+
+  private static TelegramBot telegramBot;
+
+  private static final OfferRepository offerRepository = new OfferRepository(offer -> telegramBot.remove(List.of(offer)));
+
+  private static final KleinanzeigenApi kleinanzeigenApi = new KleinanzeigenApi(offerRepository);
+
+  public static void main(String[] args) throws IOException, TelegramApiException {
+    telegramBot = new TelegramBot(offerRepository);
+    try {
+      while (true) {
+        handle(telegramBot);
+        waitSeconds(60);
+      }
+    } catch (InterruptedException e) {
+      log.warn(e.toString());
+    } finally {
+      telegramBot.stop();
+    }
+  }
+
+  private static void handle(final TelegramBot telegramBot) {
+    kleinanzeigenApi.fetchUntilDuplicate(5);
+    offerRepository.findAll().stream().filter(offer -> offer.getTelegramMessageId() == null).forEach(telegramBot::send);
+  }
+
+  private static void waitSeconds(final long seconds) throws InterruptedException {
+    final Object lock = new Object();
+    synchronized (lock) {
+      lock.wait(seconds * 1000);
+    }
+  }
+
+}

src/main/java/de/ph87/kleinanzeigen/api/Main.java

@@ -1,43 +0,0 @@
-package de.ph87.kleinanzeigen.api;
-
-import lombok.extern.slf4j.Slf4j;
-import org.telegram.telegrambots.meta.exceptions.TelegramApiException;
-
-import java.io.IOException;
-import java.util.List;
-
-@Slf4j
-@SuppressWarnings({"InfiniteLoopStatement", "SameParameterValue", "SynchronizationOnLocalVariableOrMethodParameter"})
-public class Main {
-
-  private static Bot bot;
-
-  private static final Kleinanzeigen kleinanzeigen = new Kleinanzeigen(offer -> bot.remove(List.of(offer)));
-
-  public static void main(String[] args) throws IOException, TelegramApiException {
-    bot = new Bot(kleinanzeigen::ignore, kleinanzeigen::findByTelegramMessageId, kleinanzeigen::remember);
-    try {
-      while (true) {
-        handle(bot);
-        waitSeconds(60);
-      }
-    } catch (InterruptedException e) {
-      log.warn(e.toString());
-    } finally {
-      bot.stop();
-    }
-  }
-
-  private static void handle(final Bot bot) {
-    kleinanzeigen.fetchUntilDuplicate(5);
-    kleinanzeigen.findAll().stream().filter(offer -> offer.getTelegramMessageId() == null).forEach(bot::send);
-  }
-
-  private static void waitSeconds(final long seconds) throws InterruptedException {
-    final Object lock = new Object();
-    synchronized (lock) {
-      lock.wait(seconds * 1000);
-    }
-  }
-
-}

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/FetchResult.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.kleinanzeigen;
 
 import lombok.Data;
 

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/KleinanzeigenApi.java

@@ -1,86 +1,32 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.kleinanzeigen;
 
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.Offer;
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.OfferParseException;
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.OfferRepository;
 import lombok.extern.slf4j.Slf4j;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
-import org.telegram.telegrambots.meta.api.objects.MaybeInaccessibleMessage;
 
-import java.io.File;
 import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.time.LocalDate;
 import java.time.LocalTime;
 import java.time.ZonedDateTime;
-import java.util.*;
-import java.util.function.Consumer;
+import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import static de.ph87.kleinanzeigen.api.JSON.objectMapper;
-
 @Slf4j
-public class Kleinanzeigen {
-
-  private static final int KEEP_LAST_OFFERS_COUNT = 200;
-
-  private static final File FILE = new File("./offers.json");
+public class KleinanzeigenApi {
 
   private static final String VERSCHENKEN_EPPELBORN_30KM = "https://www.kleinanzeigen.de/s-zu-verschenken/66571/seite:%d/c192l339r30";
 
-  private final List<Offer> offers;
+  private final OfferRepository offerRepository;
 
-  private final Consumer<Offer> remove;
-
-  public Kleinanzeigen(final Consumer<Offer> remove) {
-    this.remove = remove;
-    offers = load();
-  }
-
-  private List<Offer> load() {
-    try {
-      final List<Offer> offers = objectMapper.readerForListOf(Offer.class).readValue(FILE);
-      log.info("Loaded {} offers from file: {}", offers.size(), FILE);
-      return offers;
-    } catch (IOException e) {
-      log.warn("Failed to load Offers from file={}: {}", FILE, e.toString());
-      return new ArrayList<>();
-    }
-  }
-
-  private void save() {
-    try {
-      final List<Offer> removed;
-      synchronized (offers) {
-        removed = _cleanUp();
-        objectMapper.writerWithDefaultPrettyPrinter().writeValue(FILE, offers);
-        log.debug("Wrote {} offers to file: {}", offers.size(), FILE);
-      }
-      removed.forEach(remove);
-    } catch (IOException e) {
-      log.warn("Failed to write Offers to file={}: {}", FILE, e.toString());
-    }
-  }
-
-  private List<Offer> _cleanUp() {
-    if (offers.stream().anyMatch(Offer::_deleted_)) {
-      throw new RuntimeException();
-    }
-
-    offers.sort(Comparator.comparing(Offer::getDate));
-
-    final ZonedDateTime now = ZonedDateTime.now();
-    final List<Offer> deleted = new ArrayList<>();
-    final List<Offer> removable = new ArrayList<>(offers.stream().filter(offer -> !offer.isRemember() && (offer.getRememberUntil() == null || now.isAfter(offer.getRememberUntil()))).toList());
-    while (!removable.isEmpty() && removable.size() > Kleinanzeigen.KEEP_LAST_OFFERS_COUNT) {
-      final Offer offer = removable.removeFirst();
-      offers.remove(offer);
-      offer.markDeleted();
-      deleted.add(offer);
-    }
-
-    return deleted;
+  public KleinanzeigenApi(final OfferRepository offerRepository) {
+    this.offerRepository = offerRepository;
   }
 
   public void fetchUntilDuplicate(final int maxPageCount) {
@@ -108,10 +54,10 @@ public class Kleinanzeigen {
           fetchResult.add(MergeResult.ERROR);
           continue;
         }
-        final MergeResult mergeResult = merge(offer);
+        final MergeResult mergeResult = offerRepository.save(offer);
         fetchResult.add(mergeResult);
       }
-      save();
+      offerRepository.flush();
     } catch (IOException e) {
       log.error("Failed to fetch Kleinanzeigen: {}", e.toString());
     }
@@ -165,20 +111,6 @@ public class Kleinanzeigen {
     return "";
   }
 
-  private MergeResult merge(final Offer offer) {
-    synchronized (offer) {
-      final Optional<Offer> existingOptional = offers.stream().filter(existing -> existing.getId().equals(offer.getId())).findFirst();
-      if (existingOptional.isPresent()) {
-        existingOptional.get().merge(offer);
-        return MergeResult.UPDATED;
-      } else {
-        log.info("Created: {}", offer);
-        offers.add(offer);
-        return MergeResult.CREATED;
-      }
-    }
-  }
-
   private ZonedDateTime parseDate(final String text) {
     final Matcher dayNameMatcher = Pattern.compile("(?<day>Gestern|Heute), (?<hour>\\d+):(?<minute>\\d+)").matcher(text);
     if (dayNameMatcher.find()) {
@@ -193,36 +125,4 @@ public class Kleinanzeigen {
     throw new NumberFormatException("Failed to parse date: " + text);
   }
 
-  public List<Offer> findAll() {
-    synchronized (offers) {
-      return new ArrayList<>(offers);
-    }
-  }
-
-  public void ignore(final MaybeInaccessibleMessage message) {
-    synchronized (offers) {
-      findByTelegramMessageId(message).ifPresent(offer -> {
-        offer.ignore();
-        save();
-      });
-    }
-  }
-
-  public Optional<Offer> remember(final MaybeInaccessibleMessage message, final boolean remember) {
-    synchronized (offers) {
-      final Optional<Offer> optional = findByTelegramMessageId(message);
-      optional.ifPresent(offer -> {
-        offer.setRemember(remember);
-        save();
-      });
-      return optional;
-    }
-  }
-
-  public Optional<Offer> findByTelegramMessageId(final MaybeInaccessibleMessage message) {
-    synchronized (offers) {
-      return offers.stream().filter(offer -> Objects.equals(offer.getTelegramMessageId(), message.getMessageId())).findFirst();
-    }
-  }
-
 }

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/MergeResult.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.kleinanzeigen;
 
 public enum MergeResult {
   CREATED, UPDATED, ERROR

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/offer/Offer.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.kleinanzeigen.offer;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonIgnore;

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/offer/OfferParseException.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.kleinanzeigen.offer;
 
 import org.jsoup.nodes.Element;
 

src/main/java/de/ph87/kleinanzeigen/kleinanzeigen/offer/OfferRepository.java

@@ -0,0 +1,122 @@
+package de.ph87.kleinanzeigen.kleinanzeigen.offer;
+
+import de.ph87.kleinanzeigen.kleinanzeigen.MergeResult;
+import lombok.extern.slf4j.Slf4j;
+import org.telegram.telegrambots.meta.api.objects.MaybeInaccessibleMessage;
+
+import java.io.File;
+import java.io.IOException;
+import java.time.ZonedDateTime;
+import java.util.*;
+import java.util.function.Consumer;
+
+import static de.ph87.kleinanzeigen.JSON.objectMapper;
+
+@Slf4j
+public class OfferRepository {
+
+  private static final int KEEP_LAST_OFFERS_COUNT = 200;
+
+  private static final File FILE = new File("./offers.json");
+
+  private final List<Offer> offers;
+
+  private final Consumer<Offer> remove;
+
+  public OfferRepository(final Consumer<Offer> remove) {
+    this.remove = remove;
+    offers = load();
+  }
+
+  private List<Offer> load() {
+    try {
+      final List<Offer> offers = objectMapper.readerForListOf(Offer.class).readValue(FILE);
+      log.info("Loaded {} offers from file: {}", offers.size(), FILE);
+      return offers;
+    } catch (IOException e) {
+      log.warn("Failed to load Offers from file={}: {}", FILE, e.toString());
+      return new ArrayList<>();
+    }
+  }
+
+  public void flush() {
+    try {
+      final List<Offer> removed;
+      synchronized (offers) {
+        removed = _cleanUp();
+        objectMapper.writerWithDefaultPrettyPrinter().writeValue(FILE, offers);
+        log.debug("Wrote {} offers to file: {}", offers.size(), FILE);
+      }
+      removed.forEach(remove);
+    } catch (IOException e) {
+      log.warn("Failed to write Offers to file={}: {}", FILE, e.toString());
+    }
+  }
+
+  private List<Offer> _cleanUp() {
+    if (offers.stream().anyMatch(Offer::_deleted_)) {
+      throw new RuntimeException();
+    }
+
+    offers.sort(Comparator.comparing(Offer::getDate));
+
+    final ZonedDateTime now = ZonedDateTime.now();
+    final List<Offer> deleted = new ArrayList<>();
+    final List<Offer> removable = new ArrayList<>(offers.stream().filter(offer -> !offer.isRemember() && (offer.getRememberUntil() == null || now.isAfter(offer.getRememberUntil()))).toList());
+    while (!removable.isEmpty() && removable.size() > OfferRepository.KEEP_LAST_OFFERS_COUNT) {
+      final Offer offer = removable.removeFirst();
+      offers.remove(offer);
+      offer.markDeleted();
+      deleted.add(offer);
+    }
+
+    return deleted;
+  }
+
+  public MergeResult save(final Offer offer) {
+    synchronized (offer) {
+      final Optional<Offer> existingOptional = offers.stream().filter(existing -> existing.getId().equals(offer.getId())).findFirst();
+      if (existingOptional.isPresent()) {
+        existingOptional.get().merge(offer);
+        return MergeResult.UPDATED;
+      } else {
+        log.info("Created: {}", offer);
+        offers.add(offer);
+        return MergeResult.CREATED;
+      }
+    }
+  }
+
+  public List<Offer> findAll() {
+    synchronized (offers) {
+      return new ArrayList<>(offers);
+    }
+  }
+
+  public void ignore(final MaybeInaccessibleMessage message) {
+    synchronized (offers) {
+      findByTelegramMessageId(message).ifPresent(offer -> {
+        offer.ignore();
+        flush();
+      });
+    }
+  }
+
+  public Optional<Offer> remember(final MaybeInaccessibleMessage message, final boolean remember) {
+    synchronized (offers) {
+      final Optional<Offer> optional = findByTelegramMessageId(message);
+      optional.ifPresent(offer -> {
+        offer.setRemember(remember);
+        flush();
+      });
+      return optional;
+    }
+  }
+
+  public Optional<Offer> findByTelegramMessageId(final MaybeInaccessibleMessage message) {
+    synchronized (offers) {
+      return offers.stream().filter(offer -> Objects.equals(offer.getTelegramMessageId(), message.getMessageId())).findFirst();
+    }
+  }
+
+}

src/main/java/de/ph87/kleinanzeigen/telegram/InlineCommand.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.telegram;
 
 public enum InlineCommand {
   IGNORE, REMEMBER, UNREMEMBER

src/main/java/de/ph87/kleinanzeigen/telegram/InlineDto.java

@@ -1,4 +1,4 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.telegram;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import lombok.Data;

src/main/java/de/ph87/kleinanzeigen/telegram/TelegramBot.java

@@ -1,6 +1,8 @@
-package de.ph87.kleinanzeigen.api;
+package de.ph87.kleinanzeigen.telegram;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.Offer;
+import de.ph87.kleinanzeigen.kleinanzeigen.offer.OfferRepository;
 import lombok.extern.slf4j.Slf4j;
 import org.telegram.telegrambots.bots.TelegramLongPollingBot;
 import org.telegram.telegrambots.meta.TelegramBotsApi;
@@ -20,15 +22,15 @@ import java.io.ByteArrayOutputStream;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.*;
-import java.util.function.BiFunction;
-import java.util.function.Consumer;
-import java.util.function.Function;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
 
-import static de.ph87.kleinanzeigen.api.JSON.objectMapper;
+import static de.ph87.kleinanzeigen.JSON.objectMapper;
 
 @Slf4j
-public class Bot extends TelegramLongPollingBot {
+public class TelegramBot extends TelegramLongPollingBot {
 
   private static final long CHAT_ID = 101138682L;
 
@@ -40,29 +42,29 @@ public class Bot extends TelegramLongPollingBot {
 
   private final DefaultBotSession session;
 
-  private final Consumer<MaybeInaccessibleMessage> ignore;
+  private final OfferRepository offerRepository;
 
-  private final Function<MaybeInaccessibleMessage, Optional<Offer>> find;
-
-  private final BiFunction<MaybeInaccessibleMessage, Boolean, Optional<Offer>> remember;
-
-  public Bot(final Consumer<MaybeInaccessibleMessage> ignore, final Function<MaybeInaccessibleMessage, Optional<Offer>> find, final BiFunction<MaybeInaccessibleMessage, Boolean, Optional<Offer>> remember) throws IOException, TelegramApiException {
+  public TelegramBot(final OfferRepository offerRepository) throws IOException, TelegramApiException {
     super(readToken());
+    this.offerRepository = offerRepository;
 
     final BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
     final ByteArrayOutputStream stream = new ByteArrayOutputStream();
     ImageIO.write(img, "PNG", stream);
     NO_IMAGE = stream.toByteArray();
 
-    this.ignore = ignore;
-    this.find = find;
-    this.remember = remember;
     log.info("Starting telegram bot...");
     final TelegramBotsApi api = new TelegramBotsApi(DefaultBotSession.class);
     session = (DefaultBotSession) api.registerBot(this);
     log.info("Telegram bot registered.");
   }
 
+  private static String readToken() throws IOException {
+    try (final FileInputStream stream = new FileInputStream("./telegram.token")) {
+      return new String(stream.readAllBytes(), StandardCharsets.UTF_8).trim();
+    }
+  }
+
   @Override
   public String getBotUsername() {
     return "BotKleinanzeigenBot";
@@ -96,26 +98,26 @@ public class Bot extends TelegramLongPollingBot {
   }
 
   private void ignore(final MaybeInaccessibleMessage message) {
-    ignore.accept(message);
+    offerRepository.ignore(message);
     remove(message);
   }
 
   private void remember(final MaybeInaccessibleMessage message) {
-    remember.apply(message, true).ifPresentOrElse(
+    offerRepository.remember(message, true).ifPresentOrElse(
       offer -> updateMessage(message, offer),
       () -> remove(message)
     );
   }
 
   private void unremember(final MaybeInaccessibleMessage message) {
-    remember.apply(message, false).ifPresentOrElse(
+    offerRepository.remember(message, false).ifPresentOrElse(
       offer -> updateMessage(message, offer),
       () -> remove(message)
     );
   }
 
   private void updateMessage(final MaybeInaccessibleMessage message) {
-    find.apply(message).ifPresentOrElse(
+    offerRepository.findByTelegramMessageId(message).ifPresentOrElse(
       offer -> updateMessage(message, offer),
       () -> remove(message)
     );
@@ -131,12 +133,6 @@ public class Bot extends TelegramLongPollingBot {
     }
   }
 
-  private static String readToken() throws IOException {
-    try (final FileInputStream stream = new FileInputStream("./telegram.token")) {
-      return new String(stream.readAllBytes(), StandardCharsets.UTF_8).trim();
-    }
-  }
-
   public void send(final Offer offer) {
     try {
       final InputFile inputFile = offer.getImage().isEmpty() ? new InputFile(new ByteArrayInputStream(NO_IMAGE), "[Kein Bild]") : new InputFile(offer.getImage());