Improvements for deterining an Address for a 2D FTN

app/Models/Address.php

@@ -254,6 +254,9 @@ class Address extends Model
 		$ftn = self::parseFTN($address);
 		$do = $ftn['d'] ? Domain::where('name',$ftn['d'])->single() : NULL;
 
+		if ($ftn['z'] === 0)
+			Log::alert(sprintf('%s:! newFTN was parsed an FTN [%s] with a zero zone',self::LOGKEY,$address));
+
 		$zo = Zone::where('zone_id',$ftn['z'])
 			->when($do,fn($query)=>$query->where('domain_id',$do->id))
 			->single();
@@ -337,34 +340,39 @@ class Address extends Model
 		$region_id = 0;
 		$zone_id = NULL;
 
-		// We can only work out region if we have a domain
+		// We can only work out region/zone if we have a domain - this is for 2D parsing
 		if ($matches[5] ?? NULL) {
 			$o = new self;
 			$o->host_id = $matches[2];
 			$o->node_id = $matches[3];
 			$o->point_id = empty($matches[4]) ? 0 : (int)$matches[4];
 
-			$zo = Zone::select('zones.*')->where('zone_id',$matches[1])->join('domains',['domains.id'=>'zones.domain_id'])->where('domains.name',$matches[5])->single();
+			if ($matches[1] !== "0") {
+				$zo = Zone::select('zones.*')
+					->where('zone_id',$matches[1])
+					->join('domains',['domains.id'=>'zones.domain_id'])
+					->where('domains.name',$matches[5])
+					->single();
+
+			// Try and find out the zone from the host_id
+			} else {
+				$zo = Zone::select('zones.*')
+					->where(fn($query)=>$query->where('host_id',$matches[2])->orWhere('region_id',$matches[2]))
+					->join('domains',['domains.id'=>'zones.domain_id'])
+					->join('addresses',['addresses.zone_id'=>'zones.id'])
+					->where('domains.name',$matches[5])
+					->first();
+			}
+
 			$o->zone_id = $zo?->id;
 			$parent = $o->parent();
-			$zone_id = $parent?->zone->zone_id;
-
-			// For flattened domains
-			if ($zo?->domain->flatten && is_null($zone_id))
-				foreach ($zo->domain->zones as $zoo) {
-					$o->zone_id = $zoo->id;
-					$parent = $o->parent();
-
-					if ($parent)
-						break;
-				}
 
 			$region_id = $parent?->region_id;
 			$zone_id = $parent?->zone->zone_id;
 		}
 
 		return [
-			'z' => (int)$zone_id ?: $matches[1],
+			'z' => (int)($zone_id ?: $matches[1]),
 			'r' => (int)$region_id,
 			'n' => (int)$matches[2],
 			'f' => (int)$matches[3],