wip - refactoring & cleanup

src/main/java/stirling/software/SPDF/config/security/CustomLogoutSuccessHandler.java

@@ -197,14 +197,14 @@ public class CustomLogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {
                                 + clientId
                                 + "&post_logout_redirect_uri="
                                 + response.encodeRedirectURL(redirect_url);
-                log.info("Redirecting to Keycloak logout URL: " + logoutUrl);
+                log.info("Redirecting to Keycloak logout URL: {}", logoutUrl);
                 response.sendRedirect(logoutUrl);
             }
             case "github" -> {
                 // Add GitHub specific logout URL if needed
                 // todo: why does the redirect go to github? shouldn't it come to Stirling PDF?
                 String githubLogoutUrl = "https://github.com/logout";
-                log.info("Redirecting to GitHub logout URL: " + redirect_url);
+                log.info("Redirecting to GitHub logout URL: {}", redirect_url);
                 response.sendRedirect(redirect_url);
             }
             case "google" -> {

src/main/java/stirling/software/SPDF/config/security/oauth2/OAuth2Configuration.java

@@ -64,19 +64,13 @@ public class OAuth2Configuration {
     }
 
     private Optional<ClientRegistration> googleClientRegistration() {
-        OAUTH2 oauth = applicationProperties.getSecurity().getOauth2();
-
-        if (oauth == null || !oauth.getEnabled()) {
+        if (isOauthOrClientEmpty()) {
             return Optional.empty();
         }
 
-        Client client = oauth.getClient();
+        GoogleProvider google =
+                applicationProperties.getSecurity().getOauth2().getClient().getGoogle();
 
-        if (client == null) {
-            return Optional.empty();
-        }
-
-        GoogleProvider google = client.getGoogle();
         return google != null && google.isSettingsValid()
                 ? Optional.of(
                         ClientRegistration.withRegistrationId(google.getName())
@@ -95,15 +89,13 @@ public class OAuth2Configuration {
     }
 
     private Optional<ClientRegistration> keycloakClientRegistration() {
-        OAUTH2 oauth = applicationProperties.getSecurity().getOauth2();
-        if (oauth == null || !oauth.getEnabled()) {
+        if (isOauthOrClientEmpty()) {
             return Optional.empty();
         }
-        Client client = oauth.getClient();
-        if (client == null) {
-            return Optional.empty();
-        }
-        KeycloakProvider keycloak = client.getKeycloak();
+
+        KeycloakProvider keycloak =
+                applicationProperties.getSecurity().getOauth2().getClient().getKeycloak();
+
         return keycloak != null && keycloak.isSettingsValid()
                 ? Optional.of(
                         ClientRegistrations.fromIssuerLocation(keycloak.getIssuer())
@@ -181,7 +173,7 @@ public class OAuth2Configuration {
 
         Client client = oauth.getClient();
 
-        return client != null;
+        return client == null;
     }
 
     /*

src/main/java/stirling/software/SPDF/model/provider/GithubProvider.java

@@ -5,7 +5,6 @@ import java.util.Collection;
 
 import lombok.NoArgsConstructor;
 
-// @Setter
 @NoArgsConstructor
 public class GithubProvider extends Provider {
 
@@ -22,7 +21,7 @@ public class GithubProvider extends Provider {
 
     public GithubProvider(
             String clientId, String clientSecret, Collection<String> scopes, String useAsUsername) {
-        super(null, NAME, CLIENT_NAME, clientId, clientSecret, scopes, useAsUsername);
+                super(null, NAME, CLIENT_NAME, clientId, clientSecret, scopes, useAsUsername);
         this.clientId = clientId;
         this.clientSecret = clientSecret;
         this.scopes = scopes;

src/main/java/stirling/software/SPDF/model/provider/GoogleProvider.java

@@ -5,7 +5,6 @@ import java.util.Collection;
 
 import lombok.NoArgsConstructor;
 
-// @Setter
 @NoArgsConstructor
 public class GoogleProvider extends Provider {
 

src/main/java/stirling/software/SPDF/model/provider/KeycloakProvider.java

@@ -5,7 +5,6 @@ import java.util.Collection;
 
 import lombok.NoArgsConstructor;
 
-// @Setter
 @NoArgsConstructor
 public class KeycloakProvider extends Provider {
 

src/main/java/stirling/software/SPDF/model/provider/Provider.java

@@ -4,10 +4,10 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.stream.Collectors;
 
-import lombok.Getter;
+import lombok.Data;
 import lombok.NoArgsConstructor;
 
-@Getter
+@Data
 @NoArgsConstructor
 public abstract class Provider {
 
@@ -37,6 +37,7 @@ public abstract class Provider {
     }
 
     //    todo: why are we passing name here if it's not used?
+    // todo: use util class/method
     public boolean isSettingsValid() {
         return isValid(this.getIssuer(), "issuer")
                 && isValid(this.getClientId(), "clientId")
@@ -53,32 +54,8 @@ public abstract class Provider {
         return value != null && !value.isEmpty();
     }
 
-    public void setIssuer(String issuer) {
-        this.issuer = issuer;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public void setClientName(String clientName) {
-        this.clientName = clientName;
-    }
-
-    public void setClientId(String clientId) {
-        this.clientId = clientId;
-    }
-
-    public void setClientSecret(String clientSecret) {
-        this.clientSecret = clientSecret;
-    }
-
     public void setScopes(String scopes) {
         this.scopes =
                 Arrays.stream(scopes.split(",")).map(String::trim).collect(Collectors.toList());
     }
-
-    public void setUseAsUsername(String useAsUsername) {
-        this.useAsUsername = useAsUsername;
-    }
 }

src/main/java/stirling/software/SPDF/utils/validation/CollectionValidator.java

@@ -0,0 +1,11 @@
+package stirling.software.SPDF.utils.validation;
+
+import java.util.Collection;
+
+public class CollectionValidator implements Validator<Collection<String>> {
+
+    @Override
+    public boolean validate(Collection<String> input, String path) {
+        return input != null && !input.isEmpty();
+    }
+}

src/main/java/stirling/software/SPDF/utils/validation/StringValidator.java

@@ -0,0 +1,9 @@
+package stirling.software.SPDF.utils.validation;
+
+public class StringValidator implements Validator<String> {
+
+    @Override
+    public boolean validate(String input, String path) {
+        return input != null && !input.isBlank();
+    }
+}

src/main/java/stirling/software/SPDF/utils/validation/Validator.java

@@ -0,0 +1,6 @@
+package stirling.software.SPDF.utils.validation;
+
+public interface Validator<T> {
+
+    boolean validate(T input, String path);
+}