<?php
/**
* Ajax "apis" route, for handing off Ajax requests to hooked API integrations.
*/
class Loco_ajax_ApisController extends Loco_mvc_AjaxController {
/**
* {@inheritdoc}
*/
public function render(){
$post = $this->validate();
// Fire an event so translation apis can register their hooks as lazily as possible
do_action('loco_api_ajax');
// Get request renders API modal contents:
if( 0 === $post->count() ){
$apis = Loco_api_Providers::configured();
$this->set('apis',$apis);
// modal views for batch-translate and suggest feature
$modal = new Loco_mvc_View;
$modal->set('apis',$apis);
// help buttons
$locale = $this->get('locale');
$modal->set( 'help', new Loco_mvc_ViewParams( [
'text' => __('Help','loco-translate'),
'href' => apply_filters('loco_external','https://localise.biz/wordpress/plugin/manual/providers'),
] ) );
$modal->set('prof', new Loco_mvc_ViewParams( [
'text' => __('Need a human?','loco-translate'),
'href' => apply_filters('loco_external','https://localise.biz/wordpress/translation?l='.$locale),
] ) );
// render auto-translate modal or prompt for configuration
if( $apis ){
$html = $modal->render('ajax/modal-apis-batch');
}
else {
$html = $modal->render('ajax/modal-apis-empty');
}
$this->set('html',$html);
return parent::render();
}
// else API client id should be posted to perform operation
$hook = (string) $post->hook;
// API client must be hooked in using loco_api_providers filter
$config = null;
foreach( Loco_api_Providers::export() as $candidate ){
if( is_array($candidate) && array_key_exists('id',$candidate) && $candidate['id'] === $hook ){
$config = $candidate;
break;
}
}
if( is_null($config) ){
throw new Loco_error_Exception('API not registered: '.$hook );
}
// Get input texts to translate via registered hook. shouldn't be posted if empty.
$sources = $post->sources;
if( ! is_array($sources) || ! $sources ){
throw new Loco_error_Exception('Empty sources posted to '.$hook.' hook');
}
// The front end sends translations detected as HTML separately. This is to support common external apis.
$config['type'] = $post->type;
// We need a locale too, which should be valid as it's the same one loaded into the front end.
$locale = Loco_Locale::parse( (string) $post->locale );
if( ! $locale->isValid() ){
throw new Loco_error_Exception('Invalid locale');
}
// Check if hook is registered, else sources will be returned as-is
$action = 'loco_api_translate_'.$hook;
if( ! has_filter($action) ){
throw new Loco_error_Exception('API not hooked. Use `add_filter('.var_export($action,1).',...)`');
}
// This is effectively a filter whereby the returned array should be a translation of the input array
// TODO might be useful for translation hooks to know the PO file this comes from
$targets = apply_filters( $action, $sources, $locale, $config );
if( count($targets) !== count($sources) ){
Loco_error_AdminNotices::warn('Number of translations does not match number of source strings');
}
// Response data doesn't need anything except the translations
$this->set('targets',$targets);
return parent::render();
}
}