Multi module refactor (#3640)

# Description of Changes

Migrated Stirling PDF to a multi-module structure:

* Introduced new `:stirling-pdf` module
* Moved all the core logic and features of Stirling PDF into
`:stirling-pdf`
* Updated paths of jobs and scripts

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

common/.gitignore

@@ -124,6 +124,7 @@ SwaggerDoc.json
 *.rar
 *.db
 /build
+/common/build/
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
@@ -193,4 +194,3 @@ id_ed25519.pub
 
 # node_modules
 node_modules/
-*.mjs

common/build.gradle

@@ -1,41 +1,9 @@
-plugins {
-    id 'java-library'
-    id 'io.spring.dependency-management' version '1.1.7'
-}
-
-group = 'stirling.software'
-version = '0.46.2'
-
-ext {
-    lombokVersion = "1.18.38"
-}
-
-java {
-    sourceCompatibility = JavaVersion.VERSION_17
-}
-
-repositories {
-    mavenCentral()
-}
-
-configurations.all {
-    exclude group: 'commons-logging', module: 'commons-logging'
-    exclude group: "org.springframework.boot", module: "spring-boot-starter-tomcat"
-}
-
-dependencyManagement {
-    imports {
-        mavenBom 'org.springframework.boot:spring-boot-dependencies:3.5.0'
-    }
-}
-
 dependencies {
     api 'org.springframework.boot:spring-boot-starter-web'
     api 'org.springframework.boot:spring-boot-starter-thymeleaf'
     api 'com.googlecode.owasp-java-html-sanitizer:owasp-java-html-sanitizer:20240325.1'
     api 'com.fathzer:javaluator:3.0.6'
     api 'com.posthog.java:posthog:1.2.0'
-    api 'io.github.pixee:java-security-toolkit:1.2.1'
     api 'org.apache.commons:commons-lang3:3.17.0'
     api 'com.drewnoakes:metadata-extractor:2.19.0' // Image metadata extractor
     api 'com.vladsch.flexmark:flexmark-html2md-converter:0.64.8'
@@ -44,9 +12,4 @@ dependencies {
     api 'org.snakeyaml:snakeyaml-engine:2.9'
     api "org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.8"
     api 'jakarta.mail:jakarta.mail-api:2.1.3'
-    compileOnly "org.projectlombok:lombok:$lombokVersion"
-    annotationProcessor "org.projectlombok:lombok:$lombokVersion"
-
-    testImplementation "org.springframework.boot:spring-boot-starter-test"
-    testRuntimeOnly 'org.mockito:mockito-inline:5.2.0'
 }

common/src/main/java/stirling/software/common/configuration/AppConfig.java

@@ -1,5 +1,7 @@
 package stirling.software.common.configuration;
 
+import io.github.pixee.security.SystemCommand;
+import jakarta.annotation.PostConstruct;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -149,12 +151,12 @@ public class AppConfig {
 
     @Bean(name = "activeSecurity")
     public boolean activeSecurity() {
-        String additionalFeaturesOff = env.getProperty("DISABLE_ADDITIONAL_FEATURES");
+        String disableAdditionalFeatures = env.getProperty("DISABLE_ADDITIONAL_FEATURES");
 
-        if (additionalFeaturesOff != null) {
+        if (disableAdditionalFeatures != null) {
             // DISABLE_ADDITIONAL_FEATURES=true means security OFF, so return false
             // DISABLE_ADDITIONAL_FEATURES=false means security ON, so return true
-            return !Boolean.parseBoolean(additionalFeaturesOff);
+            return !Boolean.parseBoolean(disableAdditionalFeatures);
         }
 
         return env.getProperty("DOCKER_ENABLE_SECURITY", Boolean.class, true);
@@ -164,7 +166,7 @@ public class AppConfig {
     @ConditionalOnMissingClass(
             "stirling.software.proprietary.security.configuration.SecurityConfiguration")
     public boolean missingActiveSecurity() {
-        return false;
+        return true;
     }
 
     @Bean(name = "directoryFilter")

common/src/main/java/stirling/software/common/model/ApplicationProperties.java

@@ -344,10 +344,10 @@ public class ApplicationProperties {
         @Override
         public String toString() {
             return """
-                    Driver {
-                      driverName='%s'
-                    }
-                    """
+                Driver {
+                  driverName='%s'
+                }
+                """
                     .formatted(driverName);
         }
     }

common/src/main/java/stirling/software/common/service/PostHogService.java

@@ -208,7 +208,7 @@ public class PostHogService {
 
         // New environment variables
         dockerMetrics.put("version_tag", System.getenv("VERSION_TAG"));
-        dockerMetrics.put("without_enhanced_features", System.getenv("WITHOUT_ENHANCED_FEATURES"));
+        dockerMetrics.put("additional_features_off", System.getenv("ADDITIONAL_FEATURES_OFF"));
         dockerMetrics.put("fat_docker", System.getenv("FAT_DOCKER"));
 
         return dockerMetrics;

common/src/main/java/stirling/software/common/util/ValidationUtil.java

@@ -0,0 +1,14 @@
+package stirling.software.common.util;
+
+import java.util.Collection;
+
+public class ValidationUtil {
+
+    public static boolean isStringEmpty(String input) {
+        return input == null || input.isBlank();
+    }
+
+    public static boolean isCollectionEmpty(Collection<String> input) {
+        return input == null || input.isEmpty();
+    }
+}

common/src/test/java/stirling/software/common/util/CheckProgramInstallTest.java

@@ -1,5 +1,14 @@
 package stirling.software.common.util;
 
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.MockedStatic;
+import org.mockito.Mockito;
+import stirling.software.common.util.ProcessExecutor.ProcessExecutorResult;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNull;
@@ -10,18 +19,6 @@ import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
-import java.io.IOException;
-import java.lang.reflect.Field;
-import java.util.Arrays;
-
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-import org.mockito.MockedStatic;
-import org.mockito.Mockito;
-
-import stirling.software.common.util.ProcessExecutor.ProcessExecutorResult;
-
 class CheckProgramInstallTest {
 
     private MockedStatic<ProcessExecutor> mockProcessExecutor;

common/src/test/java/stirling/software/common/util/FileMonitorTest.java

@@ -19,7 +19,6 @@ import org.junit.jupiter.api.io.TempDir;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 import org.mockito.junit.jupiter.MockitoExtension;
-
 import stirling.software.common.configuration.RuntimePathConfig;
 
 @ExtendWith(MockitoExtension.class)

common/src/test/java/stirling/software/common/util/ProviderUtilsTest.java

@@ -1,10 +1,7 @@
 package stirling.software.common.util;
 
-import static org.mockito.Mockito.*;
-
 import java.util.List;
 import java.util.stream.Stream;
-
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -12,11 +9,13 @@ import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.mockito.junit.jupiter.MockitoExtension;
-
 import stirling.software.common.model.enumeration.UsernameAttribute;
 import stirling.software.common.model.oauth2.GitHubProvider;
 import stirling.software.common.model.oauth2.GoogleProvider;
 import stirling.software.common.model.oauth2.Provider;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 
 @ExtendWith(MockitoExtension.class)
 class ProviderUtilsTest {
@@ -29,19 +28,19 @@ class ProviderUtilsTest {
         when(provider.getClientSecret()).thenReturn("clientSecret");
         when(provider.getScopes()).thenReturn(List.of("read:user"));
 
-        Assertions.assertTrue(ProviderUtils.validateProvider(provider));
+        assertTrue(ProviderUtils.validateProvider(provider));
     }
 
     @ParameterizedTest
     @MethodSource("providerParams")
     void testUnsuccessfulValidation(Provider provider) {
-        Assertions.assertFalse(ProviderUtils.validateProvider(provider));
+        assertFalse(ProviderUtils.validateProvider(provider));
     }
 
     public static Stream<Arguments> providerParams() {
         Provider generic = null;
         var google =
-                new GoogleProvider(null, "clientSecret", List.of("scope"), UsernameAttribute.EMAIL);
+            new GoogleProvider(null, "clientSecret", List.of("scope"), UsernameAttribute.EMAIL);
         var github = new GitHubProvider("clientId", "", List.of("scope"), UsernameAttribute.LOGIN);
 
         return Stream.of(Arguments.of(generic), Arguments.of(google), Arguments.of(github));

common/src/test/java/stirling/software/common/util/misc/HighContrastColorReplaceDeciderTest.java

@@ -1,12 +1,10 @@
 package stirling.software.common.util.misc;
 
-import static org.junit.jupiter.api.Assertions.assertArrayEquals;
-import static org.junit.jupiter.api.Assertions.assertNull;
-
 import org.junit.jupiter.api.Test;
-
 import stirling.software.common.model.api.misc.HighContrastColorCombination;
 import stirling.software.common.model.api.misc.ReplaceAndInvert;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 class HighContrastColorReplaceDeciderTest {
 

common/src/test/java/stirling/software/common/util/misc/InvertFullColorStrategyTest.java

@@ -26,7 +26,6 @@ import org.junit.jupiter.api.Test;
 import org.springframework.core.io.InputStreamResource;
 import org.springframework.mock.web.MockMultipartFile;
 import org.springframework.web.multipart.MultipartFile;
-
 import stirling.software.common.model.api.misc.ReplaceAndInvert;
 
 class InvertFullColorStrategyTest {

common/src/test/java/stirling/software/common/util/misc/ReplaceAndInvertColorStrategyTest.java

@@ -9,7 +9,6 @@ import org.junit.jupiter.api.Test;
 import org.springframework.core.io.InputStreamResource;
 import org.springframework.mock.web.MockMultipartFile;
 import org.springframework.web.multipart.MultipartFile;
-
 import stirling.software.common.model.api.misc.ReplaceAndInvert;
 
 class ReplaceAndInvertColorStrategyTest {

common/src/test/java/stirling/software/common/util/propertyeditor/StringToArrayListPropertyEditorTest.java

@@ -1,17 +1,14 @@
 package stirling.software.common.util.propertyeditor;
 
+import java.util.List;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import stirling.software.common.model.api.security.RedactionArea;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import java.util.List;
-
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
-
-import stirling.software.common.model.api.security.RedactionArea;
-
 class StringToArrayListPropertyEditorTest {
 
     private StringToArrayListPropertyEditor editor;