added fastapi facedetection endpoint

src/main/java/com/cs102/attendance/controller/FastApiCallerController.java

@@ -0,0 +1,22 @@
+package com.cs102.attendance.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.cs102.attendance.service.FastApiCallerService;
+
+@RestController
+public class FastApiCallerController {
+
+    private final FastApiCallerService fastApiCallerService = new FastApiCallerService();
+
+    @GetMapping("/call-face-recognition")
+    public String callFaceRecognition() {
+        try {
+            return fastApiCallerService.callFaceRecognition();
+        } catch (Exception e) {
+            e.printStackTrace();
+            return "Error calling face-recognition API";
+        }
+    }
+}

src/main/java/com/cs102/attendance/service/FastApiCallerService.java

@@ -0,0 +1,38 @@
+package com.cs102.attendance.service;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class FastApiCallerService {
+
+    private static final String FASTAPI_URL = "https://kevansoon-java-facerecognition-endpoint.hf.space/face-recognition";
+
+    private final HttpClient httpClient;
+    private final ObjectMapper objectMapper;
+
+    public FastApiCallerService() {
+        this.httpClient = HttpClient.newHttpClient();
+        this.objectMapper = new ObjectMapper();
+    }
+
+    public String callFaceRecognition() throws Exception {
+        HttpRequest request = HttpRequest.newBuilder()
+                .GET()
+                .uri(URI.create(FASTAPI_URL))
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+
+        if (response.statusCode() == 200) {
+            JsonNode jsonNode = objectMapper.readTree(response.body());
+            return jsonNode.path("result").asText();
+        } else {
+            throw new RuntimeException("Failed to call FastAPI: HTTP " + response.statusCode());
+        }
+    }
+}