large query reduction (#5754)

# Description of Changes

Reduce endpoint-availability call so that an empty param to it returns
all endpoints to avoid pointlessly large http headers


Before:
GET
/api/v1/config/endpoints-availability?endpoints=compress-pdf%2Crotate-pdf%2Cmerge-pdfs%2Csplit-pages%2Cocr-pdf
  for all 74 tools

  After:
  GET /api/v1/config/endpoints-availability
---

## 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/devGuide/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/devGuide/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/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### 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/devGuide/DeveloperGuide.md#6-testing)
for more details.

app/common/src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java

@@ -606,6 +606,12 @@ public class EndpointConfiguration {
         return endpointGroups.getOrDefault(group, new HashSet<>());
     }
 
+    public Set<String> getAllEndpoints() {
+        return endpointGroups.values().stream()
+                .flatMap(Set::stream)
+                .collect(java.util.stream.Collectors.toSet());
+    }
+
     private boolean isToolGroup(String group) {
         return "qpdf".equals(group)
                 || "OCRmyPDF".equals(group)

app/core/src/main/java/stirling/software/SPDF/controller/api/misc/ConfigController.java

@@ -1,5 +1,6 @@
 package stirling.software.SPDF.controller.api.misc;
 
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -11,9 +12,6 @@ import org.springframework.web.bind.annotation.RequestParam;
 
 import io.swagger.v3.oas.annotations.Hidden;
 
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.Size;
-
 import lombok.extern.slf4j.Slf4j;
 
 import stirling.software.SPDF.config.EndpointConfiguration;
@@ -320,11 +318,13 @@ public class ConfigController {
 
     @GetMapping("/endpoints-availability")
     public ResponseEntity<Map<String, EndpointAvailability>> getEndpointAvailability(
-            @RequestParam(name = "endpoints")
-                    @Size(min = 1, max = 100, message = "Must provide between 1 and 100 endpoints")
-                    List<@NotBlank String> endpoints) {
+            @RequestParam(name = "endpoints", required = false) List<String> endpoints) {
+        Collection<String> toCheck =
+                (endpoints == null || endpoints.isEmpty())
+                        ? endpointConfiguration.getAllEndpoints()
+                        : endpoints;
         Map<String, EndpointAvailability> result = new HashMap<>();
-        for (String endpoint : endpoints) {
+        for (String endpoint : toCheck) {
             String trimmedEndpoint = endpoint.trim();
             result.put(
                     trimmedEndpoint,

app/core/src/main/resources/application.properties

@@ -38,6 +38,7 @@ spring.devtools.livereload.enabled=true
 spring.devtools.restart.exclude=stirling.software.proprietary.security/**
 spring.web.resources.mime-mappings.webmanifest=application/manifest+json
 spring.mvc.async.request-timeout=${SYSTEM_CONNECTIONTIMEOUTMILLISECONDS:1200000}
+server.tomcat.max-http-header-size=32768
 
 spring.datasource.url=jdbc:h2:file:./configs/stirling-pdf-DB-2.3.232;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE;MODE=PostgreSQL
 spring.datasource.driver-class-name=org.h2.Driver