erpsaas/app/Models/Accounting/Account.php

<?php

namespace App\Models\Accounting;

use App\Concerns\Blamable;
use App\Concerns\CompanyOwned;
use App\Enums\Accounting\AccountCategory;
use App\Enums\Accounting\AccountType;
use App\Models\Setting\Currency;
use App\Observers\AccountObserver;
use Database\Factories\Accounting\AccountFactory;
use Illuminate\Database\Eloquent\Attributes\ObservedBy;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphTo;
use Illuminate\Support\Carbon;

#[ObservedBy(AccountObserver::class)]
class Account extends Model
{
    use Blamable;
    use CompanyOwned;
    use HasFactory;

    protected $table = 'accounts';

    protected $fillable = [
        'company_id',
        'subtype_id',
        'parent_id',
        'category',
        'type',
        'code',
        'name',
        'currency_code',
        'description',
        'active',
        'default',
        'accountable_id',
        'accountable_type',
        'created_by',
        'updated_by',
    ];

    protected $casts = [
        'category' => AccountCategory::class,
        'type' => AccountType::class,
        'active' => 'boolean',
        'default' => 'boolean',
    ];

    public function subtype(): BelongsTo
    {
        return $this->belongsTo(AccountSubtype::class, 'subtype_id');
    }

    public function parent(): BelongsTo
    {
        return $this->belongsTo(__CLASS__, 'parent_id')
            ->whereKeyNot($this->getKey());
    }

    public function children(): HasMany
    {
        return $this->hasMany(__CLASS__, 'parent_id');
    }

    public function currency(): BelongsTo
    {
        return $this->belongsTo(Currency::class, 'currency_code', 'code');
    }

    public function accountable(): MorphTo
    {
        return $this->morphTo();
    }

    public function getLastTransactionDate(): ?string
    {
        $lastJournalEntryTransaction = $this->journalEntries()
            ->join('transactions', 'journal_entries.transaction_id', '=', 'transactions.id')
            ->max('transactions.posted_at');

        if ($lastJournalEntryTransaction) {
            return Carbon::parse($lastJournalEntryTransaction)->format('F j, Y');
        }

        return null;
    }

    public function isUncategorized(): bool
    {
        return $this->type->isUncategorized();
    }

    public function transactions(): HasMany
    {
        return $this->hasMany(Transaction::class, 'account_id');
    }

    public function journalEntries(): HasMany
    {
        return $this->hasMany(JournalEntry::class, 'account_id');
    }

    protected static function newFactory(): Factory
    {
        return AccountFactory::new();
    }
}