<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        if (!Schema::hasTable('tickets')) {
            return;
        }

        Schema::table('tickets', function (Blueprint $table) {
            if (!Schema::hasColumn('tickets', 'assigned_to')) {
                $table->foreignId('assigned_to')->nullable()->after('customer_id')->constrained('users')->nullOnDelete();
            }
            if (!Schema::hasColumn('tickets', 'assigned_by')) {
                $table->foreignId('assigned_by')->nullable()->after('assigned_to')->constrained('users')->nullOnDelete();
            }
            if (!Schema::hasColumn('tickets', 'assigned_at')) {
                $table->timestamp('assigned_at')->nullable()->after('assigned_by');
            }
            if (!Schema::hasColumn('tickets', 'closed_by')) {
                $table->foreignId('closed_by')->nullable()->after('closed_at')->constrained('users')->nullOnDelete();
            }
        });
    }

    public function down(): void
    {
        if (!Schema::hasTable('tickets')) {
            return;
        }

        Schema::table('tickets', function (Blueprint $table) {
            if (Schema::hasColumn('tickets', 'closed_by')) {
                $table->dropConstrainedForeignId('closed_by');
            }
            if (Schema::hasColumn('tickets', 'assigned_at')) {
                $table->dropColumn('assigned_at');
            }
            if (Schema::hasColumn('tickets', 'assigned_by')) {
                $table->dropConstrainedForeignId('assigned_by');
            }
            if (Schema::hasColumn('tickets', 'assigned_to')) {
                $table->dropConstrainedForeignId('assigned_to');
            }
        });
    }
};