<?php

declare(strict_types=1);

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

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('documentation_folders', function (Blueprint $table): void {
            $table->id();
            $table->foreignId('parent_id')
                ->nullable()
                ->constrained('documentation_folders')
                ->cascadeOnDelete();
            $table->string('name');
            $table->boolean('inherits_permissions')->default(true);
            $table->foreignId('created_by')->constrained('users')->restrictOnDelete();
            $table->timestamps();

            $table->index(['parent_id', 'name']);
        });

        Schema::create('documentation_folder_permissions', function (Blueprint $table): void {
            $table->id();
            $table->foreignId('folder_id')->constrained('documentation_folders')->cascadeOnDelete();
            $table->string('subject_type', 16);
            $table->foreignId('role_id')->nullable()->constrained('roles')->cascadeOnDelete();
            $table->foreignId('user_id')->nullable()->constrained('users')->cascadeOnDelete();
            $table->boolean('can_read')->default(false);
            $table->boolean('can_write')->default(false);
            $table->timestamps();

            $table->index(['folder_id', 'subject_type']);
            $table->index(['role_id', 'can_read', 'can_write'], 'documentation_folder_role_access_index');
            $table->index(['user_id', 'can_read', 'can_write'], 'documentation_folder_user_access_index');
        });

        Schema::create('documentation_documents', function (Blueprint $table): void {
            $table->id();
            $table->foreignId('folder_id')->constrained('documentation_folders')->cascadeOnDelete();
            $table->string('name');
            $table->unsignedInteger('last_version_number')->default(0);
            $table->foreignId('created_by')->constrained('users')->restrictOnDelete();
            $table->timestamps();

            $table->index(['folder_id', 'name']);
        });

        Schema::create('documentation_document_versions', function (Blueprint $table): void {
            $table->id();
            $table->foreignId('document_id')->constrained('documentation_documents')->cascadeOnDelete();
            $table->foreignId('file_id')->constrained('files')->restrictOnDelete();
            $table->unsignedInteger('version');
            $table->unsignedBigInteger('file_size')->default(0);
            $table->foreignId('created_by')->constrained('users')->restrictOnDelete();
            $table->timestamps();

            $table->unique(['document_id', 'version']);
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('documentation_document_versions');
        Schema::dropIfExists('documentation_documents');
        Schema::dropIfExists('documentation_folder_permissions');
        Schema::dropIfExists('documentation_folders');
    }
};