Add configurable captcha endpoints

src/main/java/com/openisle/controller/ConfigController.java

@@ -0,0 +1,47 @@
+package com.openisle.controller;
+
+import lombok.Data;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api")
+public class ConfigController {
+
+    @Value("${app.captcha.enabled:false}")
+    private boolean captchaEnabled;
+
+    @Value("${app.captcha.register-enabled:false}")
+    private boolean registerCaptchaEnabled;
+
+    @Value("${app.captcha.login-enabled:false}")
+    private boolean loginCaptchaEnabled;
+
+    @Value("${app.captcha.post-enabled:false}")
+    private boolean postCaptchaEnabled;
+
+    @Value("${app.captcha.comment-enabled:false}")
+    private boolean commentCaptchaEnabled;
+
+    @GetMapping("/config")
+    public ConfigResponse getConfig() {
+        ConfigResponse resp = new ConfigResponse();
+        resp.setCaptchaEnabled(captchaEnabled);
+        resp.setRegisterCaptchaEnabled(registerCaptchaEnabled);
+        resp.setLoginCaptchaEnabled(loginCaptchaEnabled);
+        resp.setPostCaptchaEnabled(postCaptchaEnabled);
+        resp.setCommentCaptchaEnabled(commentCaptchaEnabled);
+        return resp;
+    }
+
+    @Data
+    private static class ConfigResponse {
+        private boolean captchaEnabled;
+        private boolean registerCaptchaEnabled;
+        private boolean loginCaptchaEnabled;
+        private boolean postCaptchaEnabled;
+        private boolean commentCaptchaEnabled;
+    }
+}