<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class RunwareModel extends Model
{
    protected $fillable = [
        'modality',
        'air_id',
        'label',
        'unit',
        'price_usd',
        'is_default',
        'active',
    ];

    protected function casts(): array
    {
        return [
            'price_usd' => 'decimal:6',
            'is_default' => 'boolean',
            'active' => 'boolean',
        ];
    }

    public static function defaultFor(string $modality): ?self
    {
        return static::query()
            ->where('modality', $modality)
            ->where('is_default', true)
            ->where('active', true)
            ->first();
    }

    /**
     * The cheapest active model always wins the default flag, since Runware's
     * own model-search API doesn't expose pricing — this locally-entered
     * table is the only place "cheapest" can be computed from.
     */
    public static function recomputeDefault(string $modality): void
    {
        static::query()->where('modality', $modality)->update(['is_default' => false]);

        $cheapest = static::query()
            ->where('modality', $modality)
            ->where('active', true)
            ->orderBy('price_usd')
            ->orderBy('id')
            ->first();

        $cheapest?->update(['is_default' => true]);
    }
}