<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasManyThrough;

class NetworkSegment extends Model
{
    protected $fillable = [
        'name', 'subnet', 'vlan_id', 'active', 'description',
        'scan_interval_minutes', 'last_scanned_at', 'nmap_options', 'created_by',
    ];

    protected $casts = [
        'active'                 => 'boolean',
        'vlan_id'                => 'integer',
        'scan_interval_minutes'  => 'integer',
        'last_scanned_at'        => 'datetime',
    ];

    /** Ist ein automatischer Scan fällig? */
    public function isScanDue(): bool
    {
        if (!$this->active || !$this->scan_interval_minutes) {
            return false;
        }
        if (!$this->last_scanned_at) {
            return true;
        }
        return $this->last_scanned_at->addMinutes($this->scan_interval_minutes)->isPast();
    }

    /** Lesbare Intervall-Beschreibung */
    public function getScanIntervalLabelAttribute(): string
    {
        return match($this->scan_interval_minutes) {
            5    => 'alle 5 Minuten',
            15   => 'alle 15 Minuten',
            30   => 'alle 30 Minuten',
            60   => 'stündlich',
            360  => 'alle 6 Stunden',
            720  => 'alle 12 Stunden',
            1440 => 'täglich',
            default => 'manuell',
        };
    }

    public function createdBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    public function scans(): HasMany
    {
        return $this->hasMany(NetworkScan::class, 'segment_id');
    }

    public function latestScan(): HasMany
    {
        return $this->hasMany(NetworkScan::class, 'segment_id')->latestOfMany();
    }

    /** Alle Hosts dieses Segments (über Scans) */
    public function hosts(): HasManyThrough
    {
        return $this->hasManyThrough(NetworkHost::class, NetworkScan::class, 'segment_id', 'scan_id');
    }

    /** Anzahl online-Hosts im letzten Scan */
    public function getOnlineCountAttribute(): int
    {
        return $this->scans()->latest()->first()?->online_hosts ?? 0;
    }

    /** Anzahl Geräte gesamt im letzten Scan */
    public function getTotalCountAttribute(): int
    {
        return $this->scans()->latest()->first()?->total_hosts ?? 0;
    }

    /** Letzter Scan-Zeitpunkt */
    public function getLastScannedAtAttribute(): ?string
    {
        return $this->scans()->latest()->first()?->created_at?->format('d.m.Y H:i');
    }
}