<?php

namespace EP\EpTheme\Form;

use EP\EpProducts\EpTeam\ApiClient;
use TYPO3\CMS\Core\Site\SiteFinder;
use TYPO3\CMS\Core\Utility\GeneralUtility;

class ApplicationApiFinisher extends AbstractMappedFinisher
{
    /**
     * @var ApiClient
     */
    protected $apiClient;

    /**
     * @param ApiClient $apiClient
     */
    public function injectApiClient(ApiClient $apiClient)
    {
        $this->apiClient = $apiClient;
    }

    protected function executeInternal()
    {
        try {
            $payload = $this->buildPayload();
            if ([] === $payload) {
                $this->logWarning('Application form API finisher skipped: the mapping produced no values.');

                return;
            }

            $formDefinition = $this->finisherContext->getFormRuntime()->getFormDefinition();
            $formLabel = trim($formDefinition->getLabel());

            $payload['form'] = $formDefinition->getIdentifier();
            // The name the editor gave the form, so the receiving side can label a submission
            // without keeping a list of identifiers. Taken from the definition rather than
            // through TranslationService: a translated label would differ per site language.
            $payload['formLabel'] = '' !== $formLabel ? $formLabel : $formDefinition->getIdentifier();
            $payload['submittedAt'] = (new \DateTimeImmutable())->format(\DateTimeInterface::ATOM);
            $payload = array_merge($payload, $this->resolvePageContext());
            $payload['details'] = $this->buildLabeledValues();

            $this->apiClient->submitApplicationForm($payload);
        } catch (\Throwable $e) {
            $this->logWarning('Application form API finisher request failed.', [
                'exception' => $e,
            ]);
        }
    }

    /**
     * The page the form was submitted from. The URL is generated through the site router in the
     * visitor's language, the same way AddReferrerFinisher does it, so it is the page's canonical
     * URL rather than the submit request with its form arguments attached.
     */
    private function resolvePageContext(): array
    {
        if (false === isset($GLOBALS['TSFE']) || 0 === (int)$GLOBALS['TSFE']->id) {
            return [];
        }

        $pageUid = (int)$GLOBALS['TSFE']->id;
        $context = ['pageUid' => $pageUid];

        try {
            $site = GeneralUtility::makeInstance(SiteFinder::class)->getSiteByPageId($pageUid);
            $context['pageUrl'] = (string)$site->getRouter()->generateUri($pageUid, [
                '_language' => $GLOBALS['TSFE']->getLanguage(),
            ]);
        } catch (\Throwable $e) {
            // An unroutable page must not cost the submission, so the uid is sent without a URL.
            $this->logWarning('Application form API finisher could not resolve the page URL.', [
                'pageUid' => $pageUid,
                'exception' => $e,
            ]);
        }

        return $context;
    }
}