<?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->id();
            $table->foreignId('user_id')->nullable()->constrained()->onDelete('set null');
            $table->string('original_name')->comment('原始文件名');
            $table->string('storage_name')->comment('存储文件名');
            $table->string('path')->comment('存储路径');
            $table->string('url')->nullable()->comment('文件URL');
            $table->string('mime_type')->comment('文件类型');
            $table->integer('size')->default(0)->comment('文件大小(字节)');
            $table->string('extension')->comment('文件扩展名');
            $table->string('disk')->default('public')->comment('存储磁盘');
            $table->string('module')->default('default')->comment('所属模块');
            $table->string('purpose')->default('upload')->comment('文件用途');
            $table->text('description')->nullable()->comment('文件描述');
            $table->enum('status', ['active', 'inactive', 'deleted'])->default('active')->comment('状态');
            $table->timestamps();
            
            $table->index('user_id');
            $table->index('module');
            $table->index('purpose');
            $table->index('mime_type');
            $table->index('status');
            $table->index('created_at');
        });
    }

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