Ditch Vanilla Chain Of Thought

<?php
require 'examples/boot.php';

use Cognesy\Instructor\StructuredOutput;

class Reasoning {
    public function __construct(
        public string $chain_of_thought
    ) {}
}

class Response {
    public function __construct(
        public string $correct_answer
    ) {}
}

class PlanAndSolveSolver {
    public function __invoke(string $query): string {
        $reasoning = $this->generateReasoning($query);
        $response = $this->extractAnswer($query, $reasoning);
        return $response->correct_answer;
    }
    
    private function generateReasoning(string $query): Reasoning {
        return (new StructuredOutput)->with(
            messages: [
                [
                    'role' => 'user',
                    'content' => "<user_query>
{$query}
</user_query>

Let's first understand the problem, extract relevant variables and their corresponding numerals, and make a complete plan. Then, let's carry out the plan, calculate intermediate variables (pay attention to correct numerical calculation and commonsense), solve the problem step by step, and show the answer."
                ],
            ],
            responseModel: Reasoning::class,
        )->get();
    }
    
    private function extractAnswer(string $query, Reasoning $reasoning): Response {
        return (new StructuredOutput)->with(
            messages: [
                [
                    'role' => 'user',
                    'content' => "<user_query>
{$query}
</user_query>

Let's first understand the problem, extract relevant variables and their corresponding numerals, and make a complete plan. Then, let's carry out the plan, calculate intermediate variables (pay attention to correct numerical calculation and commonsense), solve the problem step by step, and show the answer.

<reasoning>
{$reasoning->chain_of_thought}
</reasoning>

Therefore the answer (arabic numerals) is"
                ],
            ],
            responseModel: Response::class,
        )->get();
    }
}

$result = (new PlanAndSolveSolver)(
    "In a dance class of 20 students, 20% enrolled in contemporary dance, 25% of the remaining enrolled in jazz dance and the rest enrolled in hip-hop dance. What percentage of the entire students enrolled in hip-hop dance?"
);

dump($result);
?>