From 87f495b32681d2253598b8f209ff7d1c1a2554e6 Mon Sep 17 00:00:00 2001
From: Deon George <deon@dege.au>
Date: Fri, 24 May 2024 16:57:49 +1000
Subject: [PATCH] Add nodelist segment creation

---
 app/Classes/Dynamic/NodelistSegment.php | 162 ++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 app/Classes/Dynamic/NodelistSegment.php

diff --git a/app/Classes/Dynamic/NodelistSegment.php b/app/Classes/Dynamic/NodelistSegment.php
new file mode 100644
index 0000000..232d0c8
--- /dev/null
+++ b/app/Classes/Dynamic/NodelistSegment.php
@@ -0,0 +1,162 @@
+<?php
+
+namespace App\Classes\Dynamic;
+
+use Carbon\Carbon;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Log;
+
+use App\Classes\Dynamic;
+use App\Models\{Address,System};
+
+/**
+ * This method will generate a nodelist for an upstream Host/RC/ZC/NC
+ *
+ * // @todo Only generate if nodes have been updated, added or removed
+ */
+class NodelistSegment extends Dynamic
+{
+	private const LOGKEY = 'DNL';
+
+	private string $name = '';
+	private Address $our_address;
+	private Carbon $now;
+
+	public function __construct(Address $ao,Collection $arg)
+	{
+		$this->our_address = our_address($ao->zone->domain)->first();
+		$this->now = Carbon::now();
+
+		$this->name = sprintf('z%dn%d.%d',
+			$this->our_address->zone->zone_id,
+			$this->our_address->host_id,
+			$this->now->format('z'),
+		);
+
+		Log::debug(sprintf('%s:- Generating Nodelist for [%s] from [%s] as [%s] with arguments',self::LOGKEY,$ao->ftn,$this->our_address->ftn,$this->our_address->role_name),['args'=>$arg]);
+	}
+
+	public function __toString(): string
+	{
+		return $this->crc($this->generate($this->our_address));
+	}
+
+	private function crc(string $text): string
+	{
+		return sprintf(";A %s Nodelist for %s -- Day number %d : %s\r\n",
+			$this->our_address->role_name,
+			$this->now->format('l, M d, Y'),
+			$this->now->format('z'),
+			crc16($text)
+		).$text;
+	}
+
+	private function flags(Address $ao): Collection
+	{
+		$result = collect();
+
+		if (($ao->system->pollmode === TRUE) || in_array($ao->role_name,['ZC','RC','NC','HC']))
+			$result->push('CM');
+
+		if ($ao->system->address) {
+			$result->push(sprintf('INA:%s',$ao->system->address));
+
+			if (($x=$ao->system->mailers->pluck('name')->search('BINKP')) !== FALSE)
+				$result->push(sprintf('IBN%s',(($y=$ao->system->mailers->get($x)->pivot->port) !== 24554) ? ':'.$y : ''));
+
+			if (($x=$ao->system->mailers->pluck('name')->search('EMSI')) !== FALSE)
+				$result->push(sprintf('ITN%s',(($y=$ao->system->mailers->get($x)->pivot->port) !== 23) ? ':'.$y : ''));
+		}
+
+		return $result;
+	}
+
+	private function entry(Address $ao): string
+	{
+		$format = '%s,%d,%s,%s,%s,%s,300';
+
+		$prefix = '';
+		$address = $ao->node_id;
+
+		if ((! $ao->system->address) || $ao->isPrivate) {
+			$prefix = 'Pvt';
+
+		} elseif ($ao->isHold) {
+			$prefix = 'Hold';
+
+		} elseif ($ao->isDown) {
+			$prefix = 'Down';
+
+		} else
+			switch ($ao->role_id) {
+				case Address::NODE_ZC:
+					$prefix = 'Zone';
+					$address = $ao->zone->zone_id;
+					break;
+
+				case Address::NODE_RC:
+					$prefix = 'Region';
+					$address = $ao->region_id;
+					break;
+
+				case Address::NODE_NC:
+					$prefix = 'Host';
+					$address = $ao->host_id;
+					break;
+
+				case Address::NODE_HC:
+					$prefix = 'Hub';
+					break;
+
+				case Address::NODE_NN:
+					break;
+
+				case Address::NODE_POINT:
+					throw new \Exception(sprintf('We have no method to include points in the nodelist [%s]',$ao->ftn));
+
+				default:
+					throw new \Exception(sprintf('Unknown role [%d] for [%s]',$ao->role,$ao->ftn));
+			}
+
+		return sprintf($format,
+			$prefix,
+			$address,
+			$this->format($ao->system->name),
+			$this->format($ao->system->location),
+			$this->format($ao->system->sysop),
+			$ao->system->phone ?: '-Unpublished-',
+		).(($x=$this->flags($ao)->join(',')) ? sprintf(',%s',$x) : '');
+	}
+
+	private function format(string $string): string
+	{
+		return str_replace(' ','_',str_replace(',','',$string));
+	}
+
+	private function generate(Address $ao): string
+	{
+		$result = collect();
+		$so = System::createUnknownSystem();
+
+		$result->push($this->entry($ao));
+
+		foreach ($ao->children() as $oo) {
+			// We dont include points in the ndoelist
+			if ($oo->point_id)
+				continue;
+
+			// We exclude discovered systems
+			if ($oo->system_id == $so->id)
+				continue;
+
+			$result->push($this->generate($oo) ?: $this->entry($oo));
+		}
+
+		return $result->join("\n");
+	}
+
+	public function getName(): string
+	{
+		return $this->name;
+	}
+}
\ No newline at end of file