<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class ModelPricing extends Model
{
    protected $table = 'model_pricing';
    
    protected $fillable = [
        'provider',
        'model',
        'input_price_per_million',
        'output_price_per_million',
        'context_window',
        'max_output_tokens',
        'is_active',
        'effective_from',
        'effective_until',
        'notes',
    ];

    protected $casts = [
        'input_price_per_million' => 'decimal:4',
        'output_price_per_million' => 'decimal:4',
        'context_window' => 'integer',
        'max_output_tokens' => 'integer',
        'is_active' => 'boolean',
        'effective_from' => 'date',
        'effective_until' => 'date',
    ];

    public function getInputPriceFormattedAttribute(): string
    {
        return '$' . number_format($this->input_price_per_million, 2) . '/M';
    }

    public function getOutputPriceFormattedAttribute(): string
    {
        return '$' . number_format($this->output_price_per_million, 2) . '/M';
    }

    public function calculateCost(int $inputTokens, int $outputTokens): float
    {
        $inputCost = ($inputTokens / 1_000_000) * $this->input_price_per_million;
        $outputCost = ($outputTokens / 1_000_000) * $this->output_price_per_million;
        
        return round($inputCost + $outputCost, 6);
    }

    public function isCurrentlyActive(): bool
    {
        $now = now()->toDateString();
        return $this->is_active 
            && $this->effective_from <= $now
            && ($this->effective_until === null || $this->effective_until >= $now);
    }
}