Update 6 files

- /src1/main/resources/application.yml
- /src1/main/java/com/v2d/document/config/AppProperties.java
- /src1/main/java/com/v2d/document/service/ExternalApiService.java
- /src1/main/java/com/v2d/document/controller/GenerateController.java
- /src1/test/AppPropertiesTest.java
- /README.md

src1/main/java/com/v2d/document/controller/GenerateController.java

@@ -0,0 +1,26 @@
+package com.v2d.document.controller;
+
+import com.v2d.document.service.ExternalApiService;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/generate")
+public class GenerateController {
+
+    private final ExternalApiService externalApiService;
+
+    public GenerateController(ExternalApiService externalApiService) {
+        this.externalApiService = externalApiService;
+    }
+
+    @PostMapping
+    public ResponseEntity<String> generate(@RequestBody Map<String,Object> body) {
+        // Build provider payload from the user's body (transform safely)
+        String payload = "{\"text\": \"use this text\"}"; // adapt for real usage
+        String providerResponse = externalApiService.callProvider(payload);
+        return ResponseEntity.ok(providerResponse);
+    }
+}