[AB-177] adding ability to restrict the allowed mentions and configure them via commands on a server basis, default is defined via property file

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/commands/config/mention/AllowMention.java

@@ -0,0 +1,53 @@
+package dev.sheldan.abstracto.core.commands.config.mention;
+
+import dev.sheldan.abstracto.core.command.condition.AbstractConditionableCommand;
+import dev.sheldan.abstracto.core.command.config.CommandConfiguration;
+import dev.sheldan.abstracto.core.command.config.HelpInfo;
+import dev.sheldan.abstracto.core.command.config.Parameter;
+import dev.sheldan.abstracto.core.command.config.features.CoreFeatures;
+import dev.sheldan.abstracto.core.command.execution.CommandContext;
+import dev.sheldan.abstracto.core.command.execution.CommandResult;
+import dev.sheldan.abstracto.core.commands.config.ConfigModuleInterface;
+import dev.sheldan.abstracto.core.config.FeatureEnum;
+import dev.sheldan.abstracto.core.service.AllowedMentionService;
+import net.dv8tion.jda.api.entities.Message;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.Arrays;
+import java.util.List;
+
+@Component
+public class AllowMention extends AbstractConditionableCommand {
+    @Autowired
+    private AllowedMentionService allowedMentionService;
+
+    @Override
+    public CommandResult execute(CommandContext commandContext) {
+        String mentionTypeInput = (String) commandContext.getParameters().getParameters().get(0);
+        Message.MentionType mentionType = allowedMentionService.getMentionTypeFromString(mentionTypeInput);
+        allowedMentionService.allowMentionForServer(mentionType, commandContext.getGuild().getIdLong());
+        return CommandResult.fromSuccess();
+    }
+
+    @Override
+    public CommandConfiguration getConfiguration() {
+        Parameter mentionTypeParameter = Parameter.builder().name("mentionType").type(String.class).templated(true).build();
+        List<Parameter> parameters = Arrays.asList(mentionTypeParameter);
+        HelpInfo helpInfo = HelpInfo.builder().templated(true).build();
+        return CommandConfiguration.builder()
+                .name("allowMention")
+                .module(ConfigModuleInterface.CONFIG)
+                .parameters(parameters)
+                .templated(true)
+                .supportsEmbedException(true)
+                .help(helpInfo)
+                .causesReaction(true)
+                .build();
+    }
+
+    @Override
+    public FeatureEnum getFeature() {
+        return CoreFeatures.CORE_FEATURE;
+    }
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/commands/config/mention/DisallowMention.java

@@ -0,0 +1,55 @@
+package dev.sheldan.abstracto.core.commands.config.mention;
+
+import dev.sheldan.abstracto.core.command.condition.AbstractConditionableCommand;
+import dev.sheldan.abstracto.core.command.config.CommandConfiguration;
+import dev.sheldan.abstracto.core.command.config.HelpInfo;
+import dev.sheldan.abstracto.core.command.config.Parameter;
+import dev.sheldan.abstracto.core.command.config.features.CoreFeatures;
+import dev.sheldan.abstracto.core.command.execution.CommandContext;
+import dev.sheldan.abstracto.core.command.execution.CommandResult;
+import dev.sheldan.abstracto.core.commands.config.ConfigModuleInterface;
+import dev.sheldan.abstracto.core.config.FeatureEnum;
+import dev.sheldan.abstracto.core.service.AllowedMentionService;
+import net.dv8tion.jda.api.entities.Message;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.Arrays;
+import java.util.List;
+
+@Component
+public class DisallowMention extends AbstractConditionableCommand {
+
+    @Autowired
+    private AllowedMentionService allowedMentionService;
+
+    @Override
+    public CommandResult execute(CommandContext commandContext) {
+        String mentionTypeInput = (String) commandContext.getParameters().getParameters().get(0);
+        Message.MentionType mentionType = allowedMentionService.getMentionTypeFromString(mentionTypeInput);
+        allowedMentionService.disAllowMentionForServer(mentionType, commandContext.getGuild().getIdLong());
+        return CommandResult.fromSuccess();
+    }
+
+    @Override
+    public CommandConfiguration getConfiguration() {
+        Parameter mentionTypeParameter = Parameter.builder().name("mentionType").type(String.class).templated(true).build();
+        List<Parameter> parameters = Arrays.asList(mentionTypeParameter);
+        HelpInfo helpInfo = HelpInfo.builder().templated(true).build();
+        return CommandConfiguration.builder()
+                .name("disallowMention")
+                .module(ConfigModuleInterface.CONFIG)
+                .parameters(parameters)
+                .templated(true)
+                .supportsEmbedException(true)
+                .help(helpInfo)
+                .causesReaction(true)
+                .build();
+    }
+
+    @Override
+    public FeatureEnum getFeature() {
+        return CoreFeatures.CORE_FEATURE;
+    }
+
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/commands/utility/SetEmote.java

@@ -1,6 +1,5 @@
 package dev.sheldan.abstracto.core.commands.utility;
 
-import dev.sheldan.abstracto.core.command.UtilityModuleInterface;
 import dev.sheldan.abstracto.core.command.condition.AbstractConditionableCommand;
 import dev.sheldan.abstracto.core.command.config.CommandConfiguration;
 import dev.sheldan.abstracto.core.command.config.HelpInfo;
@@ -10,6 +9,7 @@ import dev.sheldan.abstracto.core.command.config.features.CoreFeatures;
 import dev.sheldan.abstracto.core.command.config.validator.MaxStringLengthValidator;
 import dev.sheldan.abstracto.core.command.execution.CommandContext;
 import dev.sheldan.abstracto.core.command.execution.CommandResult;
+import dev.sheldan.abstracto.core.commands.config.ConfigModuleInterface;
 import dev.sheldan.abstracto.core.config.FeatureEnum;
 import dev.sheldan.abstracto.core.models.database.AEmote;
 import dev.sheldan.abstracto.core.service.EmoteService;
@@ -47,7 +47,7 @@ public class SetEmote extends AbstractConditionableCommand {
         HelpInfo helpInfo = HelpInfo.builder().templated(true).build();
         return CommandConfiguration.builder()
                 .name("setEmote")
-                .module(UtilityModuleInterface.UTILITY)
+                .module(ConfigModuleInterface.CONFIG)
                 .parameters(parameters)
                 .supportsEmbedException(true)
                 .help(helpInfo)

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/config/AllowedMentionConfig.java

@@ -0,0 +1,16 @@
+package dev.sheldan.abstracto.core.config;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+@Getter
+@Setter
+@Configuration
+@ConfigurationProperties(prefix = "abstracto.allowedmention")
+public class AllowedMentionConfig {
+    private Boolean everyone;
+    private Boolean role;
+    private Boolean user;
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/repository/AllowedMentionRepository.java

@@ -0,0 +1,15 @@
+package dev.sheldan.abstracto.core.repository;
+
+import dev.sheldan.abstracto.core.models.database.AServer;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+
+@Repository
+public interface AllowedMentionRepository extends JpaRepository<AllowedMention, Long> {
+    Optional<AllowedMention> findByServer(AServer server);
+
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/repository/ChannelGroupRepository.java

@@ -5,11 +5,13 @@ import dev.sheldan.abstracto.core.models.database.AChannelGroup;
 import dev.sheldan.abstracto.core.models.database.AServer;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.QueryHints;
+import org.springframework.stereotype.Repository;
 
 import javax.persistence.QueryHint;
 import java.util.List;
 import java.util.Optional;
 
+@Repository
 public interface ChannelGroupRepository extends JpaRepository<AChannelGroup, Long> {
 
     @QueryHints(@QueryHint(name = org.hibernate.annotations.QueryHints.CACHEABLE, value = "true"))

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/service/AllowedMentionServiceBean.java

@@ -0,0 +1,125 @@
+package dev.sheldan.abstracto.core.service;
+
+import dev.sheldan.abstracto.core.config.AllowedMentionConfig;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import dev.sheldan.abstracto.core.exception.UnknownMentionTypeException;
+import dev.sheldan.abstracto.core.service.management.AllowedMentionManagementService;
+import lombok.extern.slf4j.Slf4j;
+import net.dv8tion.jda.api.entities.Message;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Optional;
+
+@Component
+@Slf4j
+public class AllowedMentionServiceBean implements AllowedMentionService {
+
+    public static final String EVERYONE_MENTION_KEY = "everyone";
+    public static final String ROLE_MENTION_KEY = "role";
+    public static final String USER_MENTION_KEY = "user";
+
+    @Autowired
+    private AllowedMentionConfig allowedMentionConfig;
+
+    @Autowired
+    private AllowedMentionManagementService allowedMentionManagementService;
+
+    private final HashMap<String, Message.MentionType> ALL_MENTION_TYPES = new HashMap<>();
+
+    @Override
+    public boolean allMentionsAllowed(Long serverId) {
+        return getEffectiveAllowedMention(serverId).allAllowed();
+    }
+
+    @Override
+    public List<Message.MentionType> getAllowedMentionTypesForServer(Long serverId) {
+        AllowedMention allowedMention = getEffectiveAllowedMention(serverId);
+        return mapAllowedMentionToMentionType(allowedMention);
+    }
+
+    @Override
+    public void allowMentionForServer(Message.MentionType mentionType, Long serverId) {
+        log.info("Allowing mention {} for server {}.", mentionType, serverId);
+        setOrInitializeAllowedMention(mentionType, serverId, true);
+    }
+
+    @Override
+    public void disAllowMentionForServer(Message.MentionType mentionType, Long serverId) {
+        log.info("Disallowing mention {} for server {}.", mentionType, serverId);
+        setOrInitializeAllowedMention(mentionType, serverId, false);
+    }
+
+    @Override
+    public AllowedMention getDefaultAllowedMention() {
+            return AllowedMention
+                    .builder()
+                    .everyone(allowedMentionConfig.getEveryone())
+                    .role(allowedMentionConfig.getRole())
+                    .user(allowedMentionConfig.getUser())
+                    .build();
+    }
+
+    @Override
+    public AllowedMention getEffectiveAllowedMention(Long serverId) {
+        Optional<AllowedMention> customAllowMentions = allowedMentionManagementService.getCustomAllowedMentionFor(serverId);
+        return customAllowMentions.orElseGet(this::getDefaultAllowedMention);
+    }
+
+    @Override
+    public Message.MentionType getMentionTypeFromString(String input) {
+        input = input.toLowerCase();
+        if (ALL_MENTION_TYPES.containsKey(input)) {
+            return ALL_MENTION_TYPES.get(input);
+        }
+        throw new UnknownMentionTypeException();
+    }
+
+    private List<Message.MentionType> mapAllowedMentionToMentionType(AllowedMention allowedMention) {
+        // if all are allowed, we dont want to restrict it
+        if(allowedMention.allAllowed()) {
+            return null;
+        }
+        List<Message.MentionType> types = new ArrayList<>();
+        if(allowedMention.getEveryone()) {
+            types.add(Message.MentionType.EVERYONE);
+        }
+        if(allowedMention.getRole()) {
+            types.add(Message.MentionType.ROLE);
+        }
+        if(allowedMention.getUser()) {
+            types.add(Message.MentionType.USER);
+        }
+        return types;
+    }
+
+    private void setOrInitializeAllowedMention(Message.MentionType mentionType, Long serverId, boolean initialMentionValue) {
+        Optional<AllowedMention> customAllowedMentionOptional = allowedMentionManagementService.getCustomAllowedMentionFor(serverId);
+        AllowedMention customAllowedMention = customAllowedMentionOptional.orElseGet(this::getDefaultAllowedMention);
+        switch (mentionType) {
+            case EVERYONE:
+                customAllowedMention.setEveryone(initialMentionValue);
+                break;
+            case ROLE:
+                customAllowedMention.setRole(initialMentionValue);
+                break;
+            case USER:
+                customAllowedMention.setUser(initialMentionValue);
+                break;
+        }
+        if (!customAllowedMentionOptional.isPresent()) {
+            allowedMentionManagementService.createCustomAllowedMention(serverId, customAllowedMention);
+        }
+    }
+
+    @PostConstruct
+    public void postConstruct() {
+         ALL_MENTION_TYPES.put(EVERYONE_MENTION_KEY, Message.MentionType.EVERYONE);
+         ALL_MENTION_TYPES.put(ROLE_MENTION_KEY, Message.MentionType.ROLE);
+         ALL_MENTION_TYPES.put(USER_MENTION_KEY, Message.MentionType.USER);
+    }
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/service/ChannelServiceBean.java

@@ -44,6 +44,9 @@ public class ChannelServiceBean implements ChannelService {
     @Autowired
     private TemplateService templateService;
 
+    @Autowired
+    private AllowedMentionService allowedMentionService;
+
     @Autowired
     private MetricService metricService;
 
@@ -119,14 +122,21 @@ public class ChannelServiceBean implements ChannelService {
         log.trace("Sending message {} from channel {} and server {} to channel {}.",
                 message.getId(), message.getChannel().getId(), message.getGuild().getId(), channel.getId());
         metricService.incrementCounter(MESSAGE_SEND_METRIC);
-        return channel.sendMessage(message).submit();
+        return channel.sendMessage(message).allowedMentions(getAllowedMentionsFor(channel)).submit();
+    }
+
+    private List<Message.MentionType> getAllowedMentionsFor(MessageChannel channel) {
+        if(channel instanceof GuildChannel) {
+            return allowedMentionService.getAllowedMentionTypesForServer(((GuildChannel) channel).getGuild().getIdLong());
+        }
+        return null;
     }
 
     @Override
     public CompletableFuture<Message> sendTextToChannel(String text, MessageChannel channel) {
         log.trace("Sending text to channel {}.", channel.getId());
         metricService.incrementCounter(MESSAGE_SEND_METRIC);
-        return channel.sendMessage(text).submit();
+        return channel.sendMessage(text).allowedMentions(getAllowedMentionsFor(channel)).submit();
     }
 
     @Override
@@ -155,7 +165,7 @@ public class ChannelServiceBean implements ChannelService {
     @Override
     public MessageAction sendEmbedToChannelInComplete(MessageEmbed embed, MessageChannel channel) {
         metricService.incrementCounter(MESSAGE_SEND_METRIC);
-        return channel.sendMessage(embed);
+        return channel.sendMessage(embed).allowedMentions(getAllowedMentionsFor(channel));
     }
 
     @Override
@@ -213,8 +223,9 @@ public class ChannelServiceBean implements ChannelService {
             }
         }
         allMessageActions.add(0, firstMessageAction);
+        List<Message.MentionType> allowedMentions = getAllowedMentionsFor(textChannel);
         allMessageActions.forEach(messageAction ->
-            futures.add(messageAction.submit())
+            futures.add(messageAction.allowedMentions(allowedMentions).submit())
         );
         return futures;
     }

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/service/StartupServiceBean.java

@@ -56,7 +56,7 @@ public class StartupServiceBean implements Startup {
     }
 
     @Override
-    @Transactional(isolation = Isolation.SERIALIZABLE)
+    @Transactional
     public void synchronize() {
         log.info("Synchronizing servers.");
         synchronizeServers();
@@ -70,7 +70,7 @@ public class StartupServiceBean implements Startup {
         availableServers.forEach(aLong -> {
             AServer newAServer = serverManagementService.loadOrCreate(aLong);
             Guild newGuild = instance.getGuildById(aLong);
-            log.trace("Synchronizing server: {}", aLong);
+            log.info("Synchronizing server: {}", aLong);
             if(newGuild != null){
                 synchronizeRolesOf(newGuild, newAServer);
                 synchronizeChannelsOf(newGuild, newAServer);
@@ -91,7 +91,6 @@ public class StartupServiceBean implements Startup {
         Set<Long> newRoles = SetUtils.difference(availableRoles, knownRolesId);
         newRoles.forEach(aLong -> {
             roleManagementService.createRole(aLong, existingAServer);
-            log.trace("Adding new role: {}", aLong);
         });
     }
 
@@ -103,7 +102,6 @@ public class StartupServiceBean implements Startup {
         Set<Long> newChannels = SetUtils.difference(existingChannelsIds, knownChannelsIds);
         newChannels.forEach(aLong -> {
             GuildChannel channel1 = available.stream().filter(channel -> channel.getIdLong() == aLong).findFirst().get();
-            log.trace("Adding new channel: {}", aLong);
             AChannelType type = AChannelType.getAChannelType(channel1.getType());
             channelManagementService.createChannel(channel1.getIdLong(), type, existingServer);
         });

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/service/management/AllowedMentionManagementServiceBean.java

@@ -0,0 +1,55 @@
+package dev.sheldan.abstracto.core.service.management;
+
+import dev.sheldan.abstracto.core.models.database.AServer;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import dev.sheldan.abstracto.core.repository.AllowedMentionRepository;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.Optional;
+
+@Component
+@Slf4j
+public class AllowedMentionManagementServiceBean implements AllowedMentionManagementService {
+
+    @Autowired
+    private AllowedMentionRepository allowedMentionRepository;
+
+    @Autowired
+    private ServerManagementService serverManagementServiceBean;
+
+    @Override
+    public Optional<AllowedMention> getCustomAllowedMentionFor(Long serverId) {
+        return allowedMentionRepository.findById(serverId);
+    }
+
+    @Override
+    public Optional<AllowedMention> getCustomAllowedMentionFor(AServer server) {
+        return allowedMentionRepository.findByServer(server);
+    }
+
+    @Override
+    public boolean hasCustomAllowedMention(Long serverId) {
+        return getCustomAllowedMentionFor(serverId).isPresent();
+    }
+
+    @Override
+    public AllowedMention createCustomAllowedMention(Long serverId, AllowedMention base) {
+        log.info("Creating custom allowed mention for server {} based on {}.", serverId, base);
+        AServer server = serverManagementServiceBean.loadOrCreate(serverId);
+        AllowedMention allowedMention = AllowedMention
+                .builder()
+                .everyone(base.getEveryone())
+                .role(base.getRole())
+                .user(base.getUser())
+                .server(server).build();
+        allowedMentionRepository.save(allowedMention);
+        return allowedMention;
+    }
+
+    @Override
+    public void deleteCustomAllowedMention(Long serverId) {
+        allowedMentionRepository.deleteById(serverId);
+    }
+}

abstracto-application/core/core-impl/src/main/java/dev/sheldan/abstracto/core/service/management/RoleManagementServiceBean.java

@@ -25,7 +25,6 @@ public class RoleManagementServiceBean implements RoleManagementService {
                 .server(server)
                 .deleted(false)
                 .build();
-        server.getRoles().add(build);
         log.info("Creating role {} in server {}.", id, server.getId());
         return repository.save(build);
     }

abstracto-application/core/core-impl/src/main/resources/abstracto.properties

@@ -1,4 +1,9 @@
 abstracto.startup.synchronize=true
 
 abstracto.eventWaiter.threads=10
-server.port=8080
+server.port=8080
+
+
+abstracto.allowedmention.everyone=false
+abstracto.allowedmention.role=true
+abstracto.allowedmention.user=true

abstracto-application/core/core-impl/src/main/resources/migrations/1.0-core/core-seedData/command.xml

@@ -33,12 +33,6 @@
             <column name="feature_id" valueComputed="${coreFeature}"/>
             <column name="created" valueComputed="${today}"/>
         </insert>
-        <insert tableName="command">
-            <column name="name" value="setEmote"/>
-            <column name="module_id" valueComputed="${utilityModule}"/>
-            <column name="feature_id" valueComputed="${coreFeature}"/>
-            <column name="created" valueComputed="${today}"/>
-        </insert>
     </changeSet>
     <changeSet author="Sheldan" id="core-channels-commands" >
         <insert tableName="command">
@@ -187,5 +181,23 @@
             <column name="feature_id" valueComputed="${coreFeature}"/>
             <column name="created" valueComputed="${today}"/>
         </insert>
+        <insert tableName="command">
+            <column name="name" value="setEmote"/>
+            <column name="module_id" valueComputed="${configModule}"/>
+            <column name="feature_id" valueComputed="${coreFeature}"/>
+            <column name="created" valueComputed="${today}"/>
+        </insert>
+        <insert tableName="command">
+            <column name="name" value="allowMention"/>
+            <column name="module_id" valueComputed="${configModule}"/>
+            <column name="feature_id" valueComputed="${coreFeature}"/>
+            <column name="created" valueComputed="${today}"/>
+        </insert>
+        <insert tableName="command">
+            <column name="name" value="disallowMention"/>
+            <column name="module_id" valueComputed="${configModule}"/>
+            <column name="feature_id" valueComputed="${coreFeature}"/>
+            <column name="created" valueComputed="${today}"/>
+        </insert>
     </changeSet>
 </databaseChangeLog>

abstracto-application/core/core-impl/src/main/resources/migrations/1.0-core/core-tables/allowed_mention.xml

@@ -0,0 +1,26 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
+                   xmlns:pro="http://www.liquibase.org/xml/ns/pro"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog ../../dbchangelog-3.8.xsd
+    http://www.liquibase.org/xml/ns/dbchangelog-ext ../../dbchangelog-3.8.xsd
+    http://www.liquibase.org/xml/ns/pro ../../dbchangelog-3.8.xsd" >
+    <changeSet author="Sheldan" id="allowed_mention-table">
+        <createTable tableName="allowed_mention">
+            <column name="server_id" type="BIGINT">
+                <constraints nullable="false" primaryKey="true" primaryKeyName="allowed_mention_pkey"/>
+            </column>
+            <column name="created" type="TIMESTAMP WITHOUT TIME ZONE"/>
+            <column name="updated" type="TIMESTAMP WITHOUT TIME ZONE"/>
+            <column name="everyone_mention" type="BOOLEAN"/>
+            <column name="user_mention" type="BOOLEAN"/>
+            <column name="role_mention" type="BOOLEAN"/>
+        </createTable>
+    </changeSet>
+
+    <changeSet author="Sheldan" id="allowed_mention-fk_allowed_mention_server">
+        <addForeignKeyConstraint baseColumnNames="server_id" baseTableName="allowed_mention" constraintName="fk_allowed_mention_server"
+                                 deferrable="false" initiallyDeferred="false" onDelete="NO ACTION" onUpdate="NO ACTION" referencedColumnNames="id" referencedTableName="server" validate="true"/>
+    </changeSet>
+</databaseChangeLog>

abstracto-application/core/core-impl/src/main/resources/migrations/1.0-core/core-tables/tables.xml

@@ -27,4 +27,5 @@
     <include file="system_config.xml" relativeToChangelogFile="true"/>
     <include file="auser.xml" relativeToChangelogFile="true"/>
     <include file="counter.xml" relativeToChangelogFile="true"/>
+    <include file="allowed_mention.xml" relativeToChangelogFile="true"/>
 </databaseChangeLog>

abstracto-application/core/core-impl/src/test/java/dev/sheldan/abstracto/core/service/AllowedMentionServiceBeanTest.java

@@ -0,0 +1,169 @@
+package dev.sheldan.abstracto.core.service;
+
+import dev.sheldan.abstracto.core.config.AllowedMentionConfig;
+import dev.sheldan.abstracto.core.exception.UnknownMentionTypeException;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import dev.sheldan.abstracto.core.service.management.AllowedMentionManagementService;
+import net.dv8tion.jda.api.entities.Message;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import java.util.List;
+import java.util.Optional;
+
+import static org.mockito.Mockito.*;
+
+@RunWith(MockitoJUnitRunner.class)
+public class AllowedMentionServiceBeanTest {
+
+    @InjectMocks
+    private AllowedMentionServiceBean testUnit;
+
+    @Mock
+    private AllowedMentionConfig allowedMentionConfig;
+
+    @Mock
+    private AllowedMentionManagementService allowedMentionManagementService;
+
+    @Mock
+    private AllowedMention allowedMention;
+
+    private static final Long SERVER_ID = 4L;
+
+    @Before
+    public void setup() {
+        testUnit.postConstruct();
+    }
+
+    @Test
+    public void allMentionsAllowedDefaultAll() {
+        allDefaultConfigAllowed();
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        Assert.assertTrue(testUnit.allMentionsAllowed(SERVER_ID));
+    }
+
+    @Test
+    public void allMentionsAllowedDefaultNotAll() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(true);
+        when(allowedMentionConfig.getRole()).thenReturn(false);
+        when(allowedMentionConfig.getUser()).thenReturn(true);
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        Assert.assertFalse(testUnit.allMentionsAllowed(SERVER_ID));
+    }
+
+    @Test
+    public void allMentionsAllowedCustomAll() {
+        when(allowedMention.allAllowed()).thenReturn(true);
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.of(allowedMention));
+        Assert.assertTrue(testUnit.allMentionsAllowed(SERVER_ID));
+    }
+
+    @Test
+    public void getAllowedMentionTypesForServerEmpty() {
+        allDefaultConfigAllowed();
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        List<Message.MentionType> allowedMentions = testUnit.getAllowedMentionTypesForServer(SERVER_ID);
+        Assert.assertNull(allowedMentions);
+    }
+
+    @Test
+    public void getAllowedMentionTypesAllAllowed() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(true);
+        when(allowedMentionConfig.getRole()).thenReturn(false);
+        when(allowedMentionConfig.getUser()).thenReturn(false);
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        List<Message.MentionType> allowedMentions = testUnit.getAllowedMentionTypesForServer(SERVER_ID);
+        Assert.assertEquals(1, allowedMentions.size());
+        Assert.assertEquals(Message.MentionType.EVERYONE, allowedMentions.get(0));
+    }
+
+    @Test
+    public void getAllowedMentionTypesAllDisallowed() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(false);
+        when(allowedMentionConfig.getRole()).thenReturn(false);
+        when(allowedMentionConfig.getUser()).thenReturn(false);
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        List<Message.MentionType> allowedMentions = testUnit.getAllowedMentionTypesForServer(SERVER_ID);
+        Assert.assertEquals(0, allowedMentions.size());
+    }
+
+    @Test
+    public void allowMentionForServerWithExistingCustom() {
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.of(allowedMention));
+        testUnit.allowMentionForServer(Message.MentionType.EVERYONE, SERVER_ID);
+        verify(allowedMention, times(1)).setEveryone(true);
+    }
+
+    @Test
+    public void allowMentionForServerWithNewCustom() {
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        testUnit.allowMentionForServer(Message.MentionType.EVERYONE, SERVER_ID);
+        ArgumentCaptor<AllowedMention> argumentCaptor = ArgumentCaptor.forClass(AllowedMention.class);
+        verify(allowedMentionManagementService, times(1)).createCustomAllowedMention(eq(SERVER_ID), argumentCaptor.capture());
+        AllowedMention creationArgument = argumentCaptor.getValue();
+        Assert.assertTrue(creationArgument.getEveryone());
+    }
+
+    @Test
+    public void disAllowMentionForServer() {
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        testUnit.disAllowMentionForServer(Message.MentionType.EVERYONE, SERVER_ID);
+        ArgumentCaptor<AllowedMention> argumentCaptor = ArgumentCaptor.forClass(AllowedMention.class);
+        verify(allowedMentionManagementService, times(1)).createCustomAllowedMention(eq(SERVER_ID), argumentCaptor.capture());
+        AllowedMention creationArgument = argumentCaptor.getValue();
+        Assert.assertFalse(creationArgument.getEveryone());
+    }
+
+    @Test
+    public void getDefaultAllowedMention() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(true);
+        AllowedMention defaultMention = testUnit.getDefaultAllowedMention();
+        Assert.assertEquals(true, defaultMention.getEveryone());
+    }
+
+    @Test
+    public void getEffectiveAllowedMentionWithCustom() {
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.of(allowedMention));
+        AllowedMention effectiveMention = testUnit.getEffectiveAllowedMention(SERVER_ID);
+        Assert.assertEquals(allowedMention, effectiveMention);
+    }
+
+    @Test
+    public void getEffectiveAllowedMentionNoCustom() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(true);
+        when(allowedMentionManagementService.getCustomAllowedMentionFor(SERVER_ID)).thenReturn(Optional.empty());
+        AllowedMention effectiveMention = testUnit.getEffectiveAllowedMention(SERVER_ID);
+        Assert.assertNull(effectiveMention.getServer());
+        Assert.assertTrue(effectiveMention.getEveryone());
+    }
+
+    @Test
+    public void getMentionTypeFromString() {
+        Message.MentionType result = testUnit.getMentionTypeFromString("everyone");
+        Assert.assertEquals(Message.MentionType.EVERYONE, result);
+    }
+
+    @Test
+    public void getMentionTypeFromStringIgnoreCase() {
+        Message.MentionType result = testUnit.getMentionTypeFromString("eVeRyOnE");
+        Assert.assertEquals(Message.MentionType.EVERYONE, result);
+    }
+
+    @Test(expected = UnknownMentionTypeException.class)
+    public void getUnknownMentionType() {
+        testUnit.getMentionTypeFromString("test");
+    }
+
+    private void allDefaultConfigAllowed() {
+        when(allowedMentionConfig.getEveryone()).thenReturn(true);
+        when(allowedMentionConfig.getRole()).thenReturn(true);
+        when(allowedMentionConfig.getUser()).thenReturn(true);
+    }
+
+}

abstracto-application/core/core-impl/src/test/java/dev/sheldan/abstracto/core/service/management/AllowedMentionManagementServiceBeanTest.java

@@ -0,0 +1,82 @@
+package dev.sheldan.abstracto.core.service.management;
+
+import dev.sheldan.abstracto.core.models.database.AServer;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import dev.sheldan.abstracto.core.repository.AllowedMentionRepository;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import java.util.Optional;
+
+import static org.mockito.Mockito.*;
+
+@RunWith(MockitoJUnitRunner.class)
+public class AllowedMentionManagementServiceBeanTest {
+
+    @InjectMocks
+    private AllowedMentionManagementServiceBean testUnit;
+
+    @Mock
+    private AllowedMentionRepository allowedMentionRepository;
+
+    @Mock
+    private ServerManagementService serverManagementService;
+
+    @Mock
+    private AllowedMention allowedMention;
+
+    @Mock
+    private AServer server;
+
+    private static final Long SERVER_ID = 4L;
+
+    @Test
+    public void getCustomAllowedMentionForIdExisting() {
+        when(allowedMentionRepository.findById(SERVER_ID)).thenReturn(Optional.of(allowedMention));
+        Optional<AllowedMention> foundMentionOptional = testUnit.getCustomAllowedMentionFor(SERVER_ID);
+        Assert.assertTrue(foundMentionOptional.isPresent());
+        foundMentionOptional.ifPresent(foundMention -> Assert.assertEquals(allowedMention, foundMention));
+    }
+
+    @Test
+    public void getCustomAllowedMentionForIdNotExisting() {
+        when(allowedMentionRepository.findById(SERVER_ID)).thenReturn(Optional.empty());
+        Optional<AllowedMention> foundMentionOptional = testUnit.getCustomAllowedMentionFor(SERVER_ID);
+        Assert.assertFalse(foundMentionOptional.isPresent());
+    }
+
+    @Test
+    public void testGetCustomAllowedMentionForServer() {
+        when(allowedMentionRepository.findByServer(server)).thenReturn(Optional.of(allowedMention));
+        Optional<AllowedMention> foundMentionOptional = testUnit.getCustomAllowedMentionFor(server);
+        Assert.assertTrue(foundMentionOptional.isPresent());
+        foundMentionOptional.ifPresent(foundMention -> Assert.assertEquals(allowedMention, foundMention));
+    }
+
+    @Test
+    public void hasCustomAllowedMention() {
+        when(allowedMentionRepository.findById(SERVER_ID)).thenReturn(Optional.of(allowedMention));
+        Assert.assertTrue(testUnit.hasCustomAllowedMention(SERVER_ID));
+    }
+
+    @Test
+    public void createCustomAllowedMention() {
+        when(serverManagementService.loadOrCreate(SERVER_ID)).thenReturn(server);
+        AllowedMention createdMention = testUnit.createCustomAllowedMention(SERVER_ID, allowedMention);
+        ArgumentCaptor<AllowedMention> mentionCaptor = ArgumentCaptor.forClass(AllowedMention.class);
+        verify(allowedMentionRepository, times(1)).save(mentionCaptor.capture());
+        Assert.assertEquals(createdMention, mentionCaptor.getValue());
+        Assert.assertEquals(server, createdMention.getServer());
+    }
+
+    @Test
+    public void deleteCustomAllowedMention() {
+        testUnit.deleteCustomAllowedMention(SERVER_ID);
+        verify(allowedMentionRepository, times(1)).deleteById(SERVER_ID);
+    }
+}

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/exception/UnknownMentionTypeException.java

@@ -0,0 +1,15 @@
+package dev.sheldan.abstracto.core.exception;
+
+import dev.sheldan.abstracto.templating.Templatable;
+
+public class UnknownMentionTypeException extends AbstractoRunTimeException implements Templatable {
+    @Override
+    public String getTemplateName() {
+        return "unknown_mention_type_exception";
+    }
+
+    @Override
+    public Object getTemplateModel() {
+        return new Object();
+    }
+}

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/models/database/AServer.java

@@ -44,9 +44,14 @@ public class AServer implements SnowFlake, Serializable {
         this.updated = Instant.now();
     }
 
+    @OneToOne(mappedBy = "server", cascade = CascadeType.ALL)
+    @PrimaryKeyJoinColumn
+    private AllowedMention allowedMention;
+
     @OneToMany(
             fetch = FetchType.LAZY,
             orphanRemoval = true,
+            cascade = {CascadeType.PERSIST, CascadeType.MERGE},
             mappedBy = "server")
     @Builder.Default
     @org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/models/database/AllowedMention.java

@@ -0,0 +1,64 @@
+package dev.sheldan.abstracto.core.models.database;
+
+import lombok.*;
+import org.hibernate.annotations.CacheConcurrencyStrategy;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.time.Instant;
+
+@Entity
+@Table(name="allowed_mention")
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode
+@Cacheable
+@Getter
+@Setter
+@ToString
+@org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
+public class AllowedMention implements Serializable {
+
+    @Id
+    @Column(name = "server_id")
+    private Long id;
+
+    @OneToOne(fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST, CascadeType.MERGE})
+    @MapsId
+    @JoinColumn(name = "server_id")
+    private AServer server;
+
+    @Getter
+    @Column(name = "everyone_mention")
+    private Boolean everyone;
+
+    @Getter
+    @Column(name = "user_mention")
+    private Boolean user;
+
+    @Getter
+    @Column(name = "role_mention")
+    private Boolean role;
+
+    @Column(name = "created")
+    private Instant created;
+
+    @PrePersist
+    private void onInsert() {
+        this.created = Instant.now();
+    }
+
+    @Column(name = "updated")
+    private Instant updateTimestamp;
+
+    @PreUpdate
+    private void onUpdate() {
+        this.updateTimestamp = Instant.now();
+    }
+
+    public boolean allAllowed() {
+        return everyone && user && role;
+    }
+
+}

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/service/AllowedMentionService.java

@@ -0,0 +1,16 @@
+package dev.sheldan.abstracto.core.service;
+
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+import net.dv8tion.jda.api.entities.Message;
+
+import java.util.List;
+
+public interface AllowedMentionService {
+    boolean allMentionsAllowed(Long serverId);
+    List<Message.MentionType> getAllowedMentionTypesForServer(Long serverId);
+    void allowMentionForServer(Message.MentionType mentionType, Long serverId);
+    void disAllowMentionForServer(Message.MentionType mentionType, Long serverId);
+    AllowedMention getDefaultAllowedMention();
+    AllowedMention getEffectiveAllowedMention(Long serverId);
+    Message.MentionType getMentionTypeFromString(String input);
+}

abstracto-application/core/core-interface/src/main/java/dev/sheldan/abstracto/core/service/management/AllowedMentionManagementService.java

@@ -0,0 +1,14 @@
+package dev.sheldan.abstracto.core.service.management;
+
+import dev.sheldan.abstracto.core.models.database.AServer;
+import dev.sheldan.abstracto.core.models.database.AllowedMention;
+
+import java.util.Optional;
+
+public interface AllowedMentionManagementService {
+    Optional<AllowedMention> getCustomAllowedMentionFor(Long serverId);
+    Optional<AllowedMention> getCustomAllowedMentionFor(AServer server);
+    boolean hasCustomAllowedMention(Long serverId);
+    AllowedMention createCustomAllowedMention(Long server, AllowedMention base);
+    void deleteCustomAllowedMention(Long serverId);
+}

abstracto-application/documentation/src/main/docs/asciidoc/modules/core.adoc

@@ -114,6 +114,14 @@ Listing all feature modes::
 Setting up a feature with an interactive wizard::
 Usage: `setupFeature <featureName>`
 * Description: Starts an interactive wizard to configure the necessary properties and post targets of a feature. Also includes custom steps. Closes with a summary page to see all changes.
+Allow the bot to use certain mentions::
+Usage: `allowMention <mentionType>`
+* Description: Allows the bot to use certain mentions. ´mentionType` can either be `everyone`, `role` or `user`. If @everyone is enabled, this also enabled @here mentions.
+This change takes immediate effect and is only for the current server. Per default user and role mentions are enabled.
+Disallow the bot to use certain mentions::
+Usage: `disallowMention <mentionType>`
+* Description: Disallows the bot to use certain mentions. ´mentionType` can either be `everyone`, `role` or `user`. If @everyone is disabled, this also disables @here mentions.
+This change takes immediate effect and is only for the current server. Per default everyone/here mentions are disabled.
 
 
 .What does it mean if a role is immune?