Rss-Bridge/lib/BridgeCard.php

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<?php
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/**
* This file is part of RSS-Bridge, a PHP project capable of generating RSS and
* Atom feeds for websites that don't have one.
*
* For the full license information, please view the UNLICENSE file distributed
* with this source code.
*
* @package Core
* @license http://unlicense.org/ UNLICENSE
* @link https://github.com/rss-bridge/rss-bridge
*/
/**
* A generator class for a single bridge card on the home page of RSS-Bridge.
*
* This class generates the HTML content for a single bridge card for the home
* page of RSS-Bridge.
*
* @todo Return error if a caller creates an object of this class.
*/
final class BridgeCard {
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/**
* Build a HTML document string of buttons for each of the provided formats
*
* @param array $formats A list of format names
* @return string The document string
*/
private static function buildFormatButtons($formats) {
$buttons = '';
foreach($formats as $name) {
$buttons .= '<button type="submit" name="format" value="'
. $name
. '">'
. $name
. '</button>'
. PHP_EOL;
}
return $buttons;
}
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/**
* Get the form header for a bridge card
*
* @param string $bridgeName The bridge name
* @param bool $isHttps If disabled, adds a warning to the form
* @return string The form header
*/
private static function getFormHeader($bridgeName, $isHttps = false) {
$form = <<<EOD
<form method="GET" action="?">
<input type="hidden" name="action" value="display" />
<input type="hidden" name="bridge" value="{$bridgeName}" />
EOD;
if(!$isHttps) {
$form .= '<div class="secure-warning">Warning :
This bridge is not fetching its content through a secure connection</div>';
}
return $form;
}
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/**
* Get the form body for a bridge
*
* @param string $bridgeName The bridge name
* @param array $formats A list of supported formats
* @param bool $isActive Indicates if a bridge is enabled or not
* @param bool $isHttps Indicates if a bridge uses HTTPS or not
* @param string $parameterName Sets the bridge context for the current form
* @param array $parameters The bridge parameters
* @return string The form body
*/
private static function getForm($bridgeName,
$formats,
$isActive = false,
$isHttps = false,
$parameterName = '',
$parameters = array()) {
$form = self::getFormHeader($bridgeName, $isHttps);
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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if(count($parameters) > 0) {
$form .= '<div class="parameters">';
foreach($parameters as $id => $inputEntry) {
if(!isset($inputEntry['exampleValue']))
$inputEntry['exampleValue'] = '';
if(!isset($inputEntry['defaultValue']))
$inputEntry['defaultValue'] = '';
$idArg = 'arg-'
. urlencode($bridgeName)
. '-'
. urlencode($parameterName)
. '-'
. urlencode($id);
$form .= '<label for="'
. $idArg
. '">'
. filter_var($inputEntry['name'], FILTER_SANITIZE_STRING)
. '</label>'
. PHP_EOL;
if(!isset($inputEntry['type']) || $inputEntry['type'] === 'text') {
$form .= self::getTextInput($inputEntry, $idArg, $id);
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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} elseif($inputEntry['type'] === 'number') {
$form .= self::getNumberInput($inputEntry, $idArg, $id);
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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} else if($inputEntry['type'] === 'list') {
$form .= self::getListInput($inputEntry, $idArg, $id);
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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} elseif($inputEntry['type'] === 'checkbox') {
$form .= self::getCheckboxInput($inputEntry, $idArg, $id);
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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}
}
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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$form .= '</div>';
}
if($isActive) {
$form .= self::buildFormatButtons($formats);
} else {
$form .= '<span style="font-weight: bold;">Inactive</span>';
}
return $form . '</form>' . PHP_EOL;
}
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/**
* Get input field attributes
*
* @param array $entry The current entry
* @return string The input field attributes
*/
private static function getInputAttributes($entry) {
$retVal = '';
if(isset($entry['required']) && $entry['required'] === true)
$retVal .= ' required';
if(isset($entry['pattern']))
$retVal .= ' pattern="' . $entry['pattern'] . '"';
if(isset($entry['title']))
$retVal .= ' title="' . filter_var($entry['title'], FILTER_SANITIZE_STRING) . '"';
return $retVal;
}
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/**
* Get text input
*
* @param array $entry The current entry
* @param string $id The field ID
* @param string $name The field name
* @return string The text input field
*/
private static function getTextInput($entry, $id, $name) {
return '<input '
. self::getInputAttributes($entry)
. ' id="'
. $id
. '" type="text" value="'
. filter_var($entry['defaultValue'], FILTER_SANITIZE_STRING)
. '" placeholder="'
. filter_var($entry['exampleValue'], FILTER_SANITIZE_STRING)
. '" name="'
. $name
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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. '" />'
. PHP_EOL;
}
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/**
* Get number input
*
* @param array $entry The current entry
* @param string $id The field ID
* @param string $name The field name
* @return string The number input field
*/
private static function getNumberInput($entry, $id, $name) {
return '<input '
. self::getInputAttributes($entry)
. ' id="'
. $id
. '" type="number" value="'
. filter_var($entry['defaultValue'], FILTER_SANITIZE_NUMBER_INT)
. '" placeholder="'
. filter_var($entry['exampleValue'], FILTER_SANITIZE_NUMBER_INT)
. '" name="'
. $name
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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. '" />'
. PHP_EOL;
}
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/**
* Get list input
*
* @param array $entry The current entry
* @param string $id The field ID
* @param string $name The field name
* @return string The list input field
*/
private static function getListInput($entry, $id, $name) {
if(isset($entry['required'])) {
Debug::log('The "required" attribute is not supported for lists.');
unset($entry['required']);
}
$list = '<select '
. self::getInputAttributes($entry)
. ' id="'
. $id
. '" name="'
. $name
. '" >';
foreach($entry['values'] as $name => $value) {
if(is_array($value)) {
$list .= '<optgroup label="' . htmlentities($name) . '">';
foreach($value as $subname => $subvalue) {
if($entry['defaultValue'] === $subname
|| $entry['defaultValue'] === $subvalue) {
$list .= '<option value="'
. $subvalue
. '" selected>'
. $subname
. '</option>';
} else {
$list .= '<option value="'
. $subvalue
. '">'
. $subname
. '</option>';
}
}
$list .= '</optgroup>';
} else {
if($entry['defaultValue'] === $name
|| $entry['defaultValue'] === $value) {
$list .= '<option value="'
. $value
. '" selected>'
. $name
. '</option>';
} else {
$list .= '<option value="'
. $value
. '">'
. $name
. '</option>';
}
}
}
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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$list .= '</select>';
return $list;
}
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/**
* Get checkbox input
*
* @param array $entry The current entry
* @param string $id The field ID
* @param string $name The field name
* @return string The checkbox input field
*/
private static function getCheckboxInput($entry, $id, $name) {
if(isset($entry['required'])) {
Debug::log('The "required" attribute is not supported for checkboxes.');
unset($entry['required']);
}
return '<input '
. self::getInputAttributes($entry)
. ' id="'
. $id
. '" type="checkbox" name="'
. $name
. '" '
. ($entry['defaultValue'] === 'checked' ? 'checked' : '')
CSS adjustments to improve readability for bridge parameters (#763) * Group common selectors * Fix indentation using tabs * Use same styles for number and text inputs * Use grid layout for parameters Introduces the grid layout for bridge parameters. All parameters are arranged in a grid to improve readability. Read more on grid layouts at - https://www.w3schools.com/css/css_grid.asp - https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout Notice: Grid layouts are not supported in very old browser versions: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/CSS_Grid_and_Progressive_Enhancement This is why @supports checks for browser support (not supported in IE) https://developer.mozilla.org/en-US/docs/Web/CSS/@supports#Browser_compatibility In case grid layout is not supported, the displayed form is usable but not very pretty due to <br> being removed by this commit for cosmetic reasons (breaks grid layout). Unfortunately it doesn't seem possible to insert line breaks manually via '::after { content: '\A' }' in cases where grid layout isn't supported. * Add padding to card parameters Adds padding to parameters to improve readability. For bridges without parameters (count($parameters) === 0), the parameter 'div' is no longer created. * Add colon ':' after label via CSS * Capitalize first letter of label for readability * Fix checkbox isn't aligned left Sets the size of the checkbox to 20x20 px for good measure. * Harmonize formatting * Add new style to number and select boxes References #797 * Add fallback solution for browsers without grid support
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. ' />'
. PHP_EOL;
}
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/**
* Gets a single bridge card
*
* @param string $bridgeName The bridge name
* @param array $formats A list of formats
* @param bool $isActive Indicates if the bridge is active or not
* @return string The bridge card
*/
static function displayBridgeCard($bridgeName, $formats, $isActive = true){
$bridge = Bridge::create($bridgeName);
if($bridge == false)
return '';
$isHttps = strpos($bridge->getURI(), 'https') === 0;
$uri = $bridge->getURI();
$name = $bridge->getName();
$icon = $bridge->getIcon();
$description = $bridge->getDescription();
$parameters = $bridge->getParameters();
if(defined('PROXY_URL') && PROXY_BYBRIDGE) {
$parameters['global']['_noproxy'] = array(
'name' => 'Disable proxy (' . ((defined('PROXY_NAME') && PROXY_NAME) ? PROXY_NAME : PROXY_URL) . ')',
'type' => 'checkbox'
);
}
if(CUSTOM_CACHE_TIMEOUT) {
$parameters['global']['_cache_timeout'] = array(
'name' => 'Cache timeout in seconds',
'type' => 'number',
'defaultValue' => $bridge->getCacheTimeout()
);
}
$card = <<<CARD
<section id="bridge-{$bridgeName}" data-ref="{$bridgeName}">
<h2><a href="{$uri}">{$name}</a></h2>
<p class="description">{$description}</p>
<input type="checkbox" class="showmore-box" id="showmore-{$bridgeName}" />
<label class="showmore" for="showmore-{$bridgeName}">Show more</label>
CARD;
// If we don't have any parameter for the bridge, we print a generic form to load it.
if(count($parameters) === 0
|| count($parameters) === 1 && array_key_exists('global', $parameters)) {
$card .= self::getForm($bridgeName, $formats, $isActive, $isHttps);
} else {
foreach($parameters as $parameterName => $parameter) {
if(!is_numeric($parameterName) && $parameterName === 'global')
continue;
if(array_key_exists('global', $parameters))
$parameter = array_merge($parameter, $parameters['global']);
if(!is_numeric($parameterName))
$card .= '<h5>' . $parameterName . '</h5>' . PHP_EOL;
$card .= self::getForm($bridgeName, $formats, $isActive, $isHttps, $parameterName, $parameter);
}
}
$card .= '<label class="showless" for="showmore-' . $bridgeName . '">Show less</label>';
$card .= '<p class="maintainer">' . $bridge->getMaintainer() . '</p>';
$card .= '</section>';
return $card;
}
}