获取用户数据实验性的支持了获取用户所在dc (cdn) #6

gradle.properties

@@ -1,6 +1,6 @@
 ## Core
 
-VERSION = 0.6.0.2
+VERSION = 0.7.0.0
 
 # dependencies
 

src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java

@@ -4,6 +4,6 @@ package cc.sukazyo.cono.morny;
  * the final field that will be updated by gradle automatically.
  */
 public class GradleProjectConfigures {
-	public static final String VERSION = "0.6.0.2";
+	public static final String VERSION = "0.7.0.0";
-	public static final long COMPILE_TIMESTAMP = 1647237887029L;
+	public static final long COMPILE_TIMESTAMP = 1647369713069L;
 }

src/main/java/cc/sukazyo/cono/morny/util/TelegramUserInformation.java

@@ -1,10 +1,40 @@
 package cc.sukazyo.cono.morny.util;
 
 import com.pengrad.telegrambot.model.User;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import okhttp3.ResponseBody;
+
+import javax.annotation.Nullable;
+import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import static cc.sukazyo.untitled.util.telegram.formatting.MsgEscape.escapeHtml;
 public class TelegramUserInformation {
 	
+	public static final String DC_QUERY_SOURCE_SITE = "https://t.me/";
+	public static final Pattern DC_QUERY_PROCESSOR_REGEX = Pattern.compile("(cdn[1-9]).tele(sco.pe|gram-cdn.org)");
+	
+	private static final OkHttpClient httpClient = new OkHttpClient();
+	
+	@Nullable
+	public static String getDataCenterFromUsername (String username) {
+		final Request request = new Request.Builder().url(DC_QUERY_SOURCE_SITE + username).build();
+		try (Response response = httpClient.newCall(request).execute()) {
+			final ResponseBody body = response.body();
+			if (body == null) return "empty upstream response";
+			final Matcher matcher = DC_QUERY_PROCESSOR_REGEX.matcher(body.string());
+			if (matcher.find()) {
+				return matcher.group(1);
+			}
+		} catch (IOException e) {
+			return e.getMessage();
+		}
+		return null;
+	}
+	
 	public static String informationOutputHTML (User user) {
 		
 		final StringBuilder userInformation = new StringBuilder();
@@ -15,7 +45,7 @@ public class TelegramUserInformation {
 				user.id()
 		));
 		if (user.username() == null) {
-			userInformation.append("\nusername : <u>null</u>");
+			userInformation.append("\nusername : <u>null</u>\ndatacenter : <u>null</u>");
 		} else {
 			userInformation.append(String.format(
 					"""
@@ -24,6 +54,10 @@ public class TelegramUserInformation {
 					- <code>%s</code>""",
 					escapeHtml(user.username())
 			));
+			// 依赖 username 的 datacenter 查询
+			final String dataCenter = getDataCenterFromUsername(user.username());
+			if (dataCenter == null) { userInformation.append("\ndatacenter : <u>null</u>"); }
+			else { userInformation.append(String.format("\ndatacenter : <code>%s</code>", escapeHtml(dataCenter))); }
 		}
 		if (user.firstName() == null) {
 			userInformation.append("\nfirstname : <u>null</u>");