<?php

namespace App\Console\Commands;

use App\Models\Student;
use Illuminate\Console\Command;

class UpdateStudentStatus extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'students:update-status';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Updates students status based on their contracts validity';

    /**
     * Execute the console command.
     */
    public function handle(): void
    {
        $this->info('Starting student status update...');

        // Using chunk to avoid memory exhaustion on large databases
        $updatedCount = 0;
        
        Student::with('contracts')->chunkById(200, function ($students) use (&$updatedCount) {
            foreach ($students as $student) {
                $oldStatus = $student->status;
                $student->updateStatus();
                
                if ($oldStatus !== $student->status) {
                    $updatedCount++;
                }
            }
        });

        $this->info("Student status update finished. {$updatedCount} students updated.");
    }
}