laravel-llm-gateway/laravel-app/app/Models/UsageLog.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class UsageLog extends Model
{
    protected $primaryKey = 'id';
    public $incrementing = false;
    protected $keyType = 'string';
    public $timestamps = false;

    protected $fillable = [
        'id',
        'api_key_id',
        'user_id',
        'timestamp',
        'model',
        'provider',
        'endpoint',
        'prompt_tokens',
        'completion_tokens',
        'total_tokens',
        'cost',
        'status',
        'error_message',
    ];

    protected function casts(): array
    {
        return [
            'timestamp' => 'datetime',
            'prompt_tokens' => 'integer',
            'completion_tokens' => 'integer',
            'total_tokens' => 'integer',
            'cost' => 'double',
        ];
    }

    public function gatewayUser()
    {
        return $this->belongsTo(GatewayUser::class, 'user_id', 'user_id');
    }

    public function apiKey()
    {
        return $this->belongsTo(ApiKey::class, 'api_key_id', 'id');
    }

    public function scopeSuccess($query)
    {
        return $query->where('status', 'success');
    }

    public function scopeFailed($query)
    {
        return $query->where('status', '!=', 'success');
    }

    public function scopeToday($query)
    {
        return $query->whereDate('timestamp', today());
    }

    public function scopeDateRange($query, $start, $end)
    {
        return $query->whereBetween('timestamp', [$start, $end]);
    }

    public function getCostFormattedAttribute()
    {
        return $this->cost ? '$' . number_format($this->cost, 4) : 'N/A';
    }
}