added a chat filter to close #387

src/main/java/me/zeroeightsix/kami/module/modules/chat/ChatFilter.java

@@ -0,0 +1,100 @@
+package me.zeroeightsix.kami.module.modules.chat;
+
+import me.zero.alpine.listener.EventHandler;
+import me.zero.alpine.listener.Listener;
+import me.zeroeightsix.kami.module.Module;
+import me.zeroeightsix.kami.setting.Setting;
+import me.zeroeightsix.kami.setting.Settings;
+import net.minecraftforge.client.event.ClientChatReceivedEvent;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import static me.zeroeightsix.kami.util.MessageDetectionHelper.isDirect;
+import static me.zeroeightsix.kami.util.MessageDetectionHelper.isDirectOther;
+import static me.zeroeightsix.kami.util.MessageSendHelper.sendChatMessage;
+import static me.zeroeightsix.kami.util.MessageSendHelper.sendErrorMessage;
+
+/**
+ * @author dominikaaaa
+ * Updated by domikaaaa on 19/04/20
+ */
+@Module.Info(
+        name = "ChatFilter",
+        description = "Filters custom words or phrases from the chat",
+        category = Module.Category.CHAT
+)
+public class ChatFilter extends Module {
+    private Setting<Boolean> filterOwn = register(Settings.b("Filter Own", false));
+    private Setting<Boolean> filterDMs = register(Settings.b("Filter DMs", false));
+    private Setting<Boolean> hasRunInfo = register(Settings.booleanBuilder("Info").withValue(false).withVisibility(v -> false));
+
+    private static List<String> tempLines = new ArrayList<>();
+    private static String[] chatFilter;
+
+
+    @EventHandler
+    public Listener<ClientChatReceivedEvent> listener = new Listener<>(event -> {
+        if (mc.player == null) return;
+
+        if (isDetected(event.getMessage().getUnformattedText())) {
+            event.setCanceled(true);
+        }
+    });
+
+    private boolean isDetected(String message) {
+        final String OWN_MESSAGE = "^<" + mc.player.getName() + "> ";
+        if ((!filterOwn.getValue() && customMatch(OWN_MESSAGE, message)) || isDirect(filterDMs.getValue(), message) || isDirectOther(filterDMs.getValue(), message)) {
+            return false;
+        } else {
+            return isMatched(chatFilter, message);
+        }
+    }
+
+    private boolean isMatched(String[] patterns, String message) {
+        for (String pattern : patterns) {
+            if (Pattern.compile("\\b" + pattern + "\\b", Pattern.CASE_INSENSITIVE).matcher(message).find()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean customMatch(String filter, String message) {
+        return Pattern.compile(filter, Pattern.CASE_INSENSITIVE).matcher(message).find();
+    }
+
+    public void onEnable() {
+        BufferedReader bufferedReader;
+        try {
+            sendChatMessage(getChatName() + "Trying to find '&7chat_filter.txt&f'");
+            bufferedReader = new BufferedReader(new FileReader("chat_filter.txt"));
+            String line;
+            tempLines.clear();
+            while ((line = bufferedReader.readLine()) != null) {
+                while (customMatch("[ ]$", line)) { /* remove trailing spaces */
+                    line = line.substring(0, line.length() - 1);
+                }
+                tempLines.add(line);
+            }
+            bufferedReader.close();
+            chatFilter = tempLines.toArray(new String[]{});
+        } catch (FileNotFoundException exception) {
+            sendErrorMessage(getChatName() + "Couldn't find a file called '&7chat_filter.txt&f' inside your '&7.minecraft&f' folder, disabling");
+            disable();
+        } catch (IOException exception) {
+            sendErrorMessage(exception.toString());
+        }
+        if (isDisabled()) return;
+
+        if (!hasRunInfo.getValue()) {
+            sendChatMessage(getChatName() + "Tip: this supports &lregex&r if you know how to use those. This also uses &lword boundaries&r meaning it will match whole words, not part of a word. Eg if your filter has 'hell' then 'hello' will not be filtered.");
+            hasRunInfo.setValue(true);
+        }
+    }
+}