<?php

namespace App\Modules\Chatbot\Models;

use Illuminate\Database\Eloquent\Model;

class ChatbotRule extends Model
{
    protected $table = 'chatbot_rules';

    protected $fillable = [
        'title',
        'content',
        'active',
        'order',
    ];

    protected $casts = [
        'active' => 'boolean',
        'order'  => 'integer',
    ];

    /**
     * Scope to get only active rules.
     */
    public function scopeActive($query)
    {
        return $query->where('active', true);
    }

    /**
     * Get all active rules as a formatted text block for the system prompt.
     *
     * Returns an empty string when no active rule exists, so the prompt
     * stays clean and the AI behaves as before.
     */
    public static function getFormattedRules(): string
    {
        $rules = self::active()->orderBy('order')->orderBy('id')->get();

        if ($rules->isEmpty()) {
            return '';
        }

        $output = '';
        foreach ($rules as $rule) {
            $output .= "- **{$rule->title}**: {$rule->content}\n";
        }

        return trim($output);
    }
}