feat(admin): add geolocation information to user sessions and implement geo IP fetching

apps/backend/src/lib/geoip.ts

@@ -0,0 +1,57 @@
+type IpGeoInfo = {
+  ip: string;
+  city: string;
+  country: string;
+  countryCode: string;
+};
+
+const cache = new Map<string, { data: IpGeoInfo; expiresAt: number }>();
+const CACHE_TTL_MS = 60 * 60 * 1000;
+
+function getCached(ip: string): IpGeoInfo | undefined {
+  const entry = cache.get(ip);
+  if (!entry) return undefined;
+  if (Date.now() > entry.expiresAt) {
+    cache.delete(ip);
+    return undefined;
+  }
+  return entry.data;
+}
+
+function setCache(ip: string, info: IpGeoInfo): void {
+  cache.set(ip, { data: info, expiresAt: Date.now() + CACHE_TTL_MS });
+}
+
+async function fetchGeoInfo(ip: string): Promise<IpGeoInfo | null> {
+  if (ip === '127.0.0.1' || ip === '::1' || ip.startsWith('192.168.') || ip.startsWith('10.')) {
+    return { ip, city: 'Red local', country: 'Red local', countryCode: 'LOCAL' };
+  }
+
+  const cached = getCached(ip);
+  if (cached) return cached;
+
+  try {
+    const response = await fetch(
+      `http://ip-api.com/json/${ip}?fields=status,country,countryCode,city,query`
+    );
+    if (!response.ok) return null;
+
+    const data = await response.json();
+    if (data.status !== 'success') return null;
+
+    const info: IpGeoInfo = {
+      ip: data.query,
+      city: data.city || 'Desconocida',
+      country: data.country || 'Desconocido',
+      countryCode: data.countryCode || '',
+    };
+
+    setCache(ip, info);
+    return info;
+  } catch {
+    return null;
+  }
+}
+
+export type { IpGeoInfo };
+export { fetchGeoInfo };

apps/backend/src/modules/admin/services/admin-users.service.ts

@@ -1,3 +1,4 @@
+import { fetchGeoInfo } from '@/lib/geoip';
 import { db } from '@/lib/prisma';
 
 type AdminUser = {
@@ -51,6 +52,9 @@ type AdminUserSession = {
   expiresAt: string;
   ipAddress: string | null;
   userAgent: string | null;
+  city: string | null;
+  country: string | null;
+  countryCode: string | null;
 };
 
 export async function getUserSessions(userId: string): Promise<AdminUserSession[]> {
@@ -59,13 +63,34 @@ export async function getUserSessions(userId: string): Promise<AdminUserSession[
     orderBy: { createdAt: 'desc' },
   });
 
-  return sessions.map((s) => ({
-    id: s.id,
-    createdAt: s.createdAt.toISOString(),
-    expiresAt: s.expiresAt.toISOString(),
-    ipAddress: s.ipAddress,
-    userAgent: s.userAgent,
-  }));
+  const uniqueIps = [...new Set(sessions.map((s) => s.ipAddress).filter(Boolean))] as string[];
+  const geoResults = await Promise.all(uniqueIps.map((ip) => fetchGeoInfo(ip)));
+  const geoMap = new Map<
+    string,
+    { city: string | null; country: string | null; countryCode: string | null }
+  >();
+  for (let i = 0; i < uniqueIps.length; i++) {
+    const info = geoResults[i];
+    geoMap.set(uniqueIps[i], {
+      city: info?.city ?? null,
+      country: info?.country ?? null,
+      countryCode: info?.countryCode ?? null,
+    });
+  }
+
+  return sessions.map((s) => {
+    const geo = s.ipAddress ? geoMap.get(s.ipAddress) : null;
+    return {
+      id: s.id,
+      createdAt: s.createdAt.toISOString(),
+      expiresAt: s.expiresAt.toISOString(),
+      ipAddress: s.ipAddress,
+      userAgent: s.userAgent,
+      city: geo?.city ?? null,
+      country: geo?.country ?? null,
+      countryCode: geo?.countryCode ?? null,
+    };
+  });
 }
 
 export class AdminServiceError extends Error {

apps/backend/src/modules/password-reset/services/password-reset.service.ts

@@ -1,5 +1,6 @@
 import { createHash, randomInt } from 'node:crypto';
 import { auth } from '@/lib/auth';
+import { type IpGeoInfo, fetchGeoInfo } from '@/lib/geoip';
 import { sendMail } from '@/lib/mailer';
 import { db } from '@/lib/prisma';
 import type {
@@ -82,13 +83,6 @@ type UserAgentInfo = {
   device: string;
 };
 
-type IpGeoInfo = {
-  ip: string;
-  city: string;
-  country: string;
-  countryCode: string;
-};
-
 function parseUserAgent(ua: string | undefined): UserAgentInfo {
   if (!ua) {
     return { browser: 'Desconocido', os: 'Desconocido', device: 'Desconocido' };
@@ -118,31 +112,6 @@ function parseUserAgent(ua: string | undefined): UserAgentInfo {
   return { browser, os, device };
 }
 
-async function fetchGeoInfo(ip: string): Promise<IpGeoInfo | null> {
-  if (ip === '127.0.0.1' || ip === '::1' || ip.startsWith('192.168.') || ip.startsWith('10.')) {
-    return { ip, city: 'Red local', country: 'Red local', countryCode: 'LOCAL' };
-  }
-
-  try {
-    const response = await fetch(
-      `http://ip-api.com/json/${ip}?fields=status,country,countryCode,city,query`
-    );
-    if (!response.ok) return null;
-
-    const data = await response.json();
-    if (data.status !== 'success') return null;
-
-    return {
-      ip: data.query,
-      city: data.city || 'Desconocida',
-      country: data.country || 'Desconocido',
-      countryCode: data.countryCode || '',
-    };
-  } catch {
-    return null;
-  }
-}
-
 async function sendResetOtpEmail(email: string, otpCode: string) {
   await sendMail({
     to: email,

apps/frontend/src/features/admin/users-page.tsx

@@ -19,6 +19,7 @@ import {
   CheckCircle2,
   Globe,
   LogIn,
+  MapPin,
   Monitor,
   RefreshCw,
   Search,
@@ -99,6 +100,10 @@ function SessionRow({ session }: { session: AdminUserSession }) {
   const isExpired = new Date(session.expiresAt) < new Date();
   const userAgent = session.userAgent ?? 'Desconocido';
   const ip = session.ipAddress ?? '—';
+  const location =
+    session.city || session.country
+      ? [session.city, session.country].filter(Boolean).join(', ')
+      : null;
 
   return (
     <div className="rounded-xl border border-border/60 p-4">
@@ -126,6 +131,12 @@ function SessionRow({ session }: { session: AdminUserSession }) {
           <Globe className="size-3" />
           {ip}
         </span>
+        {location && (
+          <span className="flex items-center gap-1">
+            <MapPin className="size-3" />
+            {location}
+          </span>
+        )}
         <span className="flex items-center gap-1">
           <LogIn className="size-3" />
           {new Date(session.createdAt).toLocaleString()}

packages/api-contract/src/admin.ts

@@ -79,6 +79,9 @@ export const adminUserSessionSchema = z.object({
   expiresAt: z.string().datetime(),
   ipAddress: z.string().nullable(),
   userAgent: z.string().nullable(),
+  city: z.string().nullable(),
+  country: z.string().nullable(),
+  countryCode: z.string().nullable(),
 })
 
 export type AdminComplexListItem = z.infer<typeof adminComplexListItemSchema>