Prefer main city from postcode localities

src/main/kotlin/com/android/trisolarisserver/component/GoogleGeocodingClient.kt

@@ -68,6 +68,15 @@ class GoogleGeocodingClient(
         val resultNode = results.firstOrNull { node ->
             node.path("types").any { it.asText(null) == "postal_code" }
         } ?: results.first()
+        val postcodeLocalities = resultNode.path("postcode_localities")
+        if (postcodeLocalities.isArray) {
+            val candidates = postcodeLocalities.mapNotNull { it.asText(null) }
+            val agra = candidates.firstOrNull { it.equals("Agra", ignoreCase = true) }
+            if (agra != null) {
+                val stateOnly = extractState(resultNode)
+                return listOfNotNull(agra, stateOnly).joinToString(", ")
+            }
+        }
         val components = resultNode.path("address_components")
         if (!components.isArray) return null
 
@@ -92,6 +101,18 @@ class GoogleGeocodingClient(
         if (preferredCity == null && state.isNullOrBlank()) return null
         return listOfNotNull(preferredCity, state?.trim()?.ifBlank { null }).joinToString(", ")
     }
+
+    private fun extractState(resultNode: com.fasterxml.jackson.databind.JsonNode): String? {
+        val components = resultNode.path("address_components")
+        if (!components.isArray) return null
+        for (comp in components) {
+            val types = comp.path("types").mapNotNull { it.asText(null) }.toSet()
+            if ("administrative_area_level_1" in types) {
+                return comp.path("long_name").asText(null)
+            }
+        }
+        return null
+    }
 }
 
 data class GeocodeResult(