<?php

namespace Controllers;

use Libs\ResponseLib;
use Psr\Http\Message\ServerRequestInterface;

class WooviWebhookController
{
    public function __invoke(ServerRequestInterface $request)
    {
        $rawBody = (string)$request->getBody();
        if ($rawBody === '') {
            $rawBody = (string)file_get_contents('php://input');
        }

        $record = [
            'received_at' => (new \DateTimeImmutable('now', new \DateTimeZone('UTC')))->format(DATE_ATOM),
            'headers' => $this->normalizeHeaders($request->getHeaders()),
            'raw_body' => $rawBody,
        ];

        $fileName = sprintf(
            'woovi_webhook_%s_%s.txt',
            (new \DateTimeImmutable('now'))->format('Ymd_His'),
            bin2hex(random_bytes(4))
        );

        $filePath = dirname(__DIR__) . '/bin/' . $fileName;

        try {
            $encoded = json_encode($record, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
            if ($encoded === false) {
                $encoded = $rawBody;
            }
            file_put_contents($filePath, $encoded, LOCK_EX);
        } catch (\Throwable $e) {
            return ResponseLib::sendFail('Falha ao salvar webhook: ' . $e->getMessage(), [], 'E_INTERNAL')->withStatus(500);
        }

        return ResponseLib::sendOk([
            'stored_file' => basename($filePath),
        ], 'S_WEBHOOK_SAVED');
    }

    /**
     * @param array<string, array<int, string>> $headers
     * @return array<string, string>
     */
    private function normalizeHeaders(array $headers): array
    {
        $normalized = [];
        foreach ($headers as $name => $values) {
            $normalized[$name] = implode(', ', $values);
        }

        return $normalized;
    }
}