<?php

namespace App\Models;

use App\Traits\LogsActivity;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Str;

class IpPool extends Model
{
    use HasFactory, SoftDeletes, LogsActivity;

    protected $fillable = [
        'uuid',
        'ip_address',
        'gateway',
        'cidr',
        'netmask',
        'module_network_id',
        'status',
        'owner_type',
        'ip_role',
        'parent_ip',
        'customer_name',
        'service_name',
        'allocated_at',
        'revoked_at',
        'allocation_status',
        'service_id',
        'contact_email',
        'contact_cc',
        'contact_phone',
        'monthly_cost',
        'selling_price',
        'additional_info',
        'last_email_type',
        'last_email_at',
        'updated_by',
        'note',
    ];

    protected $casts = [
        'allocated_at'    => 'date',
        'revoked_at'      => 'date',
        'last_email_at'   => 'datetime',
        'monthly_cost'    => 'decimal:2',
        'selling_price'   => 'decimal:2',
    ];

    protected static function boot(): void
    {
        parent::boot();

        static::creating(function (self $model) {
            if (empty($model->uuid)) {
                $model->uuid = (string) Str::uuid();
            }
        });

        // Keep ip_pool_contacts in sync whenever contact_email/contact_cc change via normal Eloquent saves.
        // Bulk import (WithUpserts) bypasses this — call resyncAllContacts() after Excel::import() instead.
        static::saved(function (self $model) {
            if ($model->wasChanged(['contact_email', 'contact_cc']) || $model->wasRecentlyCreated) {
                $model->syncContacts();
            }
        });
    }

    public function network()
    {
        return $this->belongsTo(ModuleNetwork::class, 'module_network_id', 'id');
    }

    public function service()
    {
        return $this->belongsTo(Service::class, 'service_id');
    }

    public function contacts()
    {
        return $this->hasMany(IpPoolContact::class);
    }

    /**
     * contact_email/contact_cc may hold multiple addresses separated by comma/semicolon
     * (e.g. imported from Google Sheet). Split into a clean array, dropping invalid/empty entries.
     */
    public static function splitEmails(?string $value): array
    {
        if (!$value) {
            return [];
        }

        return collect(preg_split('/[,;]+/', $value))
            ->map(fn ($e) => trim($e))
            ->filter(fn ($e) => $e !== '' && filter_var($e, FILTER_VALIDATE_EMAIL))
            ->unique()
            ->values()
            ->all();
    }

    public function syncContacts(): void
    {
        $rows = [];
        foreach (self::splitEmails($this->contact_email) as $email) {
            $rows[] = ['ip_pool_id' => $this->id, 'email' => $email, 'type' => 'to'];
        }
        foreach (self::splitEmails($this->contact_cc) as $email) {
            $rows[] = ['ip_pool_id' => $this->id, 'email' => $email, 'type' => 'cc'];
        }

        $this->contacts()->delete();
        if ($rows) {
            IpPoolContact::insert($rows);
        }
    }

    /**
     * Full resync for bulk paths (CSV import) that bypass the saved() hook above.
     */
    public static function resyncAllContacts(): void
    {
        self::withTrashed()
            ->where(function ($q) {
                $q->whereNotNull('contact_email')->orWhereNotNull('contact_cc');
            })
            ->chunkById(500, function ($pools) {
                foreach ($pools as $pool) {
                    $pool->syncContacts();
                }
            });
    }
}