<?php

namespace App\Models;

use CodeIgniter\Model;

class NotificationModel extends Model
{
    protected $table = 'notifications';
    protected $primaryKey = 'id';
    protected $allowedFields = [
        'title', 
        'message', 
        'target_group', 
        'delivery_channels', 
        'priority', 
        'status', 
        'action_url', 
        'attachment_path', 
        'semester',
        'school_year',
        'scheduled_at'
    ];
    protected $useTimestamps = true;
    protected $createdField = 'created_at';
    protected $updatedField = 'updated_at';
    protected $deletedField = 'deleted_at';
    protected $useSoftDeletes = true;

    /**
     * Get active (non-deleted, non-expired) notifications
     */
    public function getActiveNotifications($targetGroup = null)
    {
        $builder = $this->where('scheduled_at <= NOW()')
                        ->where('(expires_at IS NULL OR expires_at > NOW())');

        if (!empty($targetGroup)) {
            $builder->where('target_group', $targetGroup);
        }

        return $builder->orderBy('priority', 'DESC')
                       ->orderBy('scheduled_at', 'DESC')
                       ->findAll();
    }

    /**
     * Get soft-deleted (archived) notifications
     */
    public function getDeletedNotifications()
    {
        return $this->onlyDeleted()
                    ->orderBy('deleted_at', 'DESC')
                    ->findAll();
    }

    /**
     * Get all notifications including soft-deleted
     */
    public function getAllNotificationsWithDeleted()
    {
        return $this->withDeleted()
                    ->orderBy('created_at', 'DESC')
                    ->findAll();
    }

    /**
     * Restore a soft-deleted notification by ID
     */
    public function restoreNotification($id)
    {
        return $this->update($id, ['deleted_at' => null]);
    }
    
    /**
     * Cleanup expired notifications (optional for cron job use)
     */
    public function deleteExpiredNotifications()
    {
        return $this->where('expires_at IS NOT NULL')
                    ->where('expires_at < NOW()')
                    ->delete();
    }
}