<?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::table('papers', function (Blueprint $table) {
            $table->string('analysis_id', 100)->nullable()->after('completed_at')->comment('AI分析记录ID');
            $table->index('analysis_id');
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::table('papers', function (Blueprint $table) {
            $table->dropIndex(['analysis_id']);
            $table->dropColumn('analysis_id');
        });
    }
};
