<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Str;

class PosTable extends Model
{
    public const STATUS_FREE = 'free';

    public const STATUS_OCCUPIED = 'occupied';

    public const STATUS_BILL_REQUESTED = 'bill_requested';

    protected $fillable = [
        'owner_ref',
        'location_id',
        'area',
        'label',
        'seats',
        'status',
        'short_code',
        'current_sale_id',
        'position',
    ];

    /** Ensure the table has a unique public short code for QR ordering. */
    public function ensureShortCode(): string
    {
        if (! $this->short_code) {
            do {
                $code = strtolower(Str::random(8));
            } while (static::where('short_code', $code)->exists());

            $this->forceFill(['short_code' => $code])->save();
        }

        return $this->short_code;
    }

    protected function casts(): array
    {
        return [
            'seats' => 'integer',
            'current_sale_id' => 'integer',
            'position' => 'integer',
        ];
    }

    public function location(): BelongsTo
    {
        return $this->belongsTo(PosLocation::class, 'location_id');
    }

    public function currentSale(): BelongsTo
    {
        return $this->belongsTo(PosSale::class, 'current_sale_id');
    }

    public function isFree(): bool
    {
        return $this->status === self::STATUS_FREE;
    }

    public function scopeOwned(Builder $query, string $ownerRef): Builder
    {
        return $query->where('owner_ref', $ownerRef);
    }
}