rss-bridge/actions/FindfeedAction.php

89 lines
3.3 KiB
PHP

<?php
/**
* This action is used by the frontpage form search.
* It finds a bridge based off of a user input url.
* It uses bridges' detectParameters implementation.
*/
class FindfeedAction implements ActionInterface
{
public function execute(Request $request)
{
$url = $request->get('url');
$format = $request->get('format');
if (!$url) {
return new Response('You must specify a url', 400);
}
if (!$format) {
return new Response('You must specify a format', 400);
}
$bridgeFactory = new BridgeFactory();
$results = [];
foreach ($bridgeFactory->getBridgeClassNames() as $bridgeClassName) {
if (!$bridgeFactory->isEnabled($bridgeClassName)) {
continue;
}
$bridge = $bridgeFactory->create($bridgeClassName);
$bridgeParams = $bridge->detectParameters($url);
if ($bridgeParams === null) {
continue;
}
// It's allowed to have no 'context' in a bridge (only a default context without any name)
// In this case, the reference to the parameters are found in the first element of the PARAMETERS array
$context = $bridgeParams['context'] ?? 0;
$bridgeData = [];
// Construct the array of parameters
foreach ($bridgeParams as $key => $value) {
// 'context' is a special case : it's a bridge parameters, there is no "name" for this parameter
if ($key == 'context') {
$bridgeData[$key]['name'] = 'Context';
$bridgeData[$key]['value'] = $value;
} else {
$bridgeData[$key]['name'] = $this->getParameterName($bridge, $context, $key);
$bridgeData[$key]['value'] = $value;
}
}
$bridgeParams['bridge'] = $bridgeClassName;
$bridgeParams['format'] = $format;
$content = [
'url' => './?action=display&' . http_build_query($bridgeParams),
'bridgeParams' => $bridgeParams,
'bridgeData' => $bridgeData,
'bridgeMeta' => [
'name' => $bridge::NAME,
'description' => $bridge::DESCRIPTION,
'parameters' => $bridge::PARAMETERS,
'icon' => $bridge->getIcon(),
],
];
$results[] = $content;
}
if ($results === []) {
return new Response(Json::encode(['message' => 'No bridge found for given url']), 404, ['content-type' => 'application/json']);
}
return new Response(Json::encode($results), 200, ['content-type' => 'application/json']);
}
// Get parameter name in the actual context, or in the global parameter
private function getParameterName($bridge, $context, $key)
{
if (isset($bridge::PARAMETERS[$context][$key]['name'])) {
$name = $bridge::PARAMETERS[$context][$key]['name'];
} else if (isset($bridge::PARAMETERS['global'][$key]['name'])) {
$name = $bridge::PARAMETERS['global'][$key]['name'];
} else {
$name = 'Variable "' . $key . '" (No name provided)';
}
return $name;
}
}