dev add geo country service

src/main/java/ru/soune/nocopy/service/geo/GeoCountryService.java

@@ -2,63 +2,49 @@ package ru.soune.nocopy.service.geo;
 
 import com.maxmind.geoip2.DatabaseReader;
 import com.maxmind.geoip2.model.CountryResponse;
-import jakarta.annotation.PostConstruct;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Service;
 
+import java.io.IOException;
 import java.net.InetAddress;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
 
 @Service
 @Slf4j
 public class GeoCountryService {
 
-    private DatabaseReader dbReader;
-    private final Map<String, String> cache = new ConcurrentHashMap<>();
+    private final DatabaseReader dbReader;
 
-    @PostConstruct
-    public void init() {
-        try {
-            var resource = new ClassPathResource("geo/GeoLite2-Country.mmdb");
+    public GeoCountryService() throws IOException {
+        Resource resource = new ClassPathResource("geo/GeoLite2-Country.mmdb");
         this.dbReader = new DatabaseReader.Builder(resource.getInputStream()).build();
-        } catch (Exception e) {
-            log.error("Failed to load Geo DB", e);
-        }
     }
 
     public String getCountry(String input) {
-        if (input == null || input.isBlank()) {
-            return null;
-        }
-
-        String host = extractHost(input);
-
-        if (cache.containsKey(host)) {
-            return cache.get(host);
-        }
-
         try {
-            InetAddress ip = InetAddress.getByName(host);
+            String domain = extractDomain(input);
+
+            InetAddress ip = InetAddress.getByName(domain);
+
             CountryResponse response = dbReader.country(ip);
-            String country = response.getCountry().getIsoCode();
-
-            cache.put(host, country != null ? country : "");
-            log.debug("{} → {}", host, country);
-            return country;
 
+            return response.getCountry().getName();
         } catch (Exception e) {
-            cache.put(host, "");
-            return null;
+            log.error("Failed for input: {}", input, e);
+            return "UNKNOWN";
         }
     }
 
-    private String extractHost(String input) {
-        String s = input.replaceFirst("^https?://", "");
-        s = s.split("/")[0];
-        s = s.split(":")[0];
+    private String extractDomain(String input) {
+        if (input == null || input.isEmpty()) {
+            throw new IllegalArgumentException("Input is empty");
+        }
 
-        return s;
+        String cleaned = input.replaceAll("^https?://", "");
+        cleaned = cleaned.split("/")[0];
+        cleaned = cleaned.split(":")[0];
+
+        return cleaned;
     }
 }