sam-api/database/migrations/2025_07_26_051643_create_files_table.php

<?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('files', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->unsignedBigInteger('tenant_id')->comment('멀티테넌시');
            $table->string('file_path')->comment('저장경로');
            $table->string('original_name')->comment('원본 파일명');
            $table->string('file_name')->comment('저장 파일명 (난수)');
            $table->string('file_name_old');
            $table->integer('file_size')->nullable();
            $table->string('mime_type', 50)->nullable();
            $table->string('description')->nullable();
            $table->unsignedBigInteger('fileable_id')->comment('Polymorphic - 연결된 모델의 PK');
            $table->string('fileable_type', 100)->comment('Polymorphic - 연결된 모델 클래스명');
            $table->unsignedBigInteger('uploaded_by')->nullable()->comment('업로더 사용자 ID');
            $table->timestamps();
            $table->softDeletes();
        });
    }

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