<?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('documents', function (Blueprint $table) {
            $table->id();
            $table->foreignId('document_category_id')->constrained()->onDelete('cascade');

            // Document metadata
            $table->string('title');
            $table->string('document_number')->unique()->nullable(); // e.g., BYL-2024-001
            $table->text('description')->nullable();
            $table->uuid('public_uuid')->unique(); // For public sharing links

            // Access control
            $table->enum('access_level', ['public', 'members', 'admin', 'board'])->default('members');

            // Current version pointer (set after first version is created)
            $table->foreignId('current_version_id')->nullable()->constrained('document_versions')->onDelete('set null');

            // Status
            $table->enum('status', ['active', 'archived'])->default('active');
            $table->timestamp('archived_at')->nullable();

            // User tracking
            $table->foreignId('created_by_user_id')->constrained('users')->onDelete('cascade');
            $table->foreignId('last_updated_by_user_id')->nullable()->constrained('users')->onDelete('set null');

            // Statistics
            $table->integer('view_count')->default(0);
            $table->integer('download_count')->default(0);
            $table->integer('version_count')->default(0);

            $table->timestamps();
            $table->softDeletes();

            // Indexes
            $table->index('document_category_id');
            $table->index('access_level');
            $table->index('status');
            $table->index('public_uuid');
            $table->index('created_at');
        });
    }

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