Implemented public DNS resolution checks

main.py

@@ -72,14 +72,25 @@ class HealthBot(discord.Client):
             emoji = '🟢' if r['up'] else '🔴'
             code = r['status_code'] if r['status_code'] is not None else '—'
             latency = f"{r['latency_ms']} ms" if r['latency_ms'] is not None else '—'
-            value = f'{emoji} `HTTP {code}` · {latency}'
+            hc = f'{emoji} `HTTP {code}` · {latency}'
             if r.get('db') is not None:
-                value += f' · db {r["db"]}'
+                hc += f' · db {r["db"]}'
             if r.get('version'):
-                value += f' · v{r["version"]}'
+                hc += f' · v{r["version"]}'
             if r.get('detail'):
-                value += f'\n*{r["detail"]}*'
-            embed.add_field(name=r['name'], value=value, inline=False)
+                hc += f' · *{r["detail"]}*'
+
+            lines = [f'**healthcheck** {hc}']
+            for label in ('Cloudflare', 'Google'):
+                d = r.get('dns', {}).get(label)
+                if d and d.get('ok'):
+                    val = '✓ ' + ', '.join(d['ips'])
+                else:
+                    err = d.get('error') if d else 'unknown'
+                    val = f'✗ {err}'
+                lines.append(f'**DNS resolution ({label})** {val}')
+
+            embed.add_field(name=r['name'], value='\n'.join(lines), inline=False)
         embed.set_footer(text=f'Updates every {config.CHECK_INTERVAL}s')
         return embed