<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('download_logs', function (Blueprint $table) {
            $table->id();
            $table->foreignId('document_id')->constrained()->onDelete('cascade');
            $table->foreignId('user_id')->constrained()->onDelete('cascade');
            $table->string('ip_address', 45);
            $table->timestamp('downloaded_at');
            
            // 添加索引以优化查询性能
            $table->index('document_id');
            $table->index('user_id');
            $table->index('downloaded_at');
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('download_logs');
    }
};
