<?php

namespace App\Services\Agent;

class DummyAgentProvider implements AgentProviderInterface
{
    /**
     * @param array<string, mixed> $context
     * @param array<string, mixed> $options
     */
    public function generate(array $context, array $options = []): string
    {
        $messages = $context['messages'] ?? [];
        $lastUser = null;
        foreach (array_reverse($messages) as $msg) {
            if (($msg['role'] ?? '') === 'USER' && ($msg['type'] ?? '') === 'user.prompt') {
                $lastUser = $msg['content'] ?? null;
                break;
            }
        }

        $summary = $lastUser ? mb_substr($lastUser, 0, 80) : 'no user prompt';

        return sprintf('MVP reply: based on last user input -> %s', $summary);
    }
}