miniflux-legacy/models/feed.php

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<?php
namespace Model\Feed;
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use Model\Config;
use Model\Item;
use SimpleValidator\Validator;
use SimpleValidator\Validators;
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use PicoDb\Database;
use PicoFeed\Serialization\Export;
use PicoFeed\Serialization\Import;
use PicoFeed\Reader\Reader;
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use PicoFeed\Reader\Favicon;
use PicoFeed\PicoFeedException;
use PicoFeed\Client\InvalidUrlException;
const LIMIT_ALL = -1;
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// Download and store the favicon
function fetch_favicon($feed_id, $site_url)
{
$favicon = new Favicon;
return Database::get('db')
->table('favicons')
->save(array(
'feed_id' => $feed_id,
'link' => $favicon->find($site_url),
'icon' => $favicon->getDataUri(),
));
}
// Refresh favicon
function refresh_favicon($feed_id, $site_url)
{
if (Config\get('favicons') == 1 && ! has_favicon($feed_id)) {
fetch_favicon($feed_id, $site_url);
}
}
// Return true if the feed have a favicon
function has_favicon($feed_id)
{
return Database::get('db')->table('favicons')->eq('feed_id', $feed_id)->count() === 1;
}
// Get favicons for those feeds
function get_favicons(array $feed_ids)
{
if (Config\get('favicons') == 0) {
return array();
}
return Database::get('db')
->table('favicons')
->in('feed_id', $feed_ids)
->listing('feed_id', 'icon');
}
// Get all favicons for a list of items
function get_item_favicons(array $items)
{
$feed_ids = array();
foreach ($items as $item) {
$feeds_ids[] = $item['feed_id'];
}
return get_favicons($feed_ids);
}
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// Get all favicons
function get_all_favicons()
{
if (Config\get('favicons') == 0) {
return array();
}
return Database::get('db')
->table('favicons')
->listing('feed_id', 'icon');
}
// Update feed information
function update(array $values)
{
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return Database::get('db')
->table('feeds')
->eq('id', $values['id'])
->save(array(
'title' => $values['title'],
'site_url' => $values['site_url'],
'feed_url' => $values['feed_url'],
'enabled' => empty($values['enabled']) ? 0 : $values['enabled'],
'rtl' => empty($values['rtl']) ? 0 : $values['rtl'],
'download_content' => empty($values['download_content']) ? 0 : $values['download_content'],
));
}
// Export all feeds
function export_opml()
{
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$opml = new Export(get_all());
return $opml->execute();
}
// Import OPML file
function import_opml($content)
{
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$import = new Import($content);
$feeds = $import->execute();
if ($feeds) {
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$db = Database::get('db');
$db->startTransaction();
foreach ($feeds as $feed) {
if (! $db->table('feeds')->eq('feed_url', $feed->feed_url)->count()) {
$db->table('feeds')->save(array(
'title' => $feed->title,
'site_url' => $feed->site_url,
'feed_url' => $feed->feed_url
));
}
}
$db->closeTransaction();
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Config\write_debug();
return true;
}
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Config\write_debug();
return false;
}
// Add a new feed from an URL
function create($url, $enable_grabber = false, $force_rtl = false)
{
try {
$db = Database::get('db');
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// Discover the feed
$reader = new Reader(Config\get_reader_config());
$resource = $reader->discover($url);
// Feed already there
if ($db->table('feeds')->eq('feed_url', $resource->getUrl())->count()) {
return false;
}
// Parse the feed
$parser = $reader->getParser(
$resource->getUrl(),
$resource->getContent(),
$resource->getEncoding()
);
if ($enable_grabber) {
$parser->enableContentGrabber();
}
$feed = $parser->execute();
// Save the feed
$result = $db->table('feeds')->save(array(
'title' => $feed->getTitle(),
'site_url' => $feed->getSiteUrl(),
'feed_url' => $feed->getFeedUrl(),
'download_content' => $enable_grabber ? 1 : 0,
'rtl' => $force_rtl ? 1 : 0,
'last_modified' => $resource->getLastModified(),
'last_checked' => time(),
'etag' => $resource->getEtag(),
));
if ($result) {
$feed_id = $db->getConnection()->getLastId();
Item\update_all($feed_id, $feed->getItems());
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refresh_favicon($feed_id, $feed->getSiteUrl());
Config\write_debug();
return (int) $feed_id;
}
}
catch (PicoFeedException $e) {}
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Config\write_debug();
return false;
}
// Refresh all feeds
function refresh_all($limit = LIMIT_ALL)
{
foreach (@get_ids($limit) as $feed_id) {
refresh($feed_id);
}
// Auto-vacuum for people using the cronjob
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Database::get('db')->getConnection()->exec('VACUUM');
return true;
}
// Refresh one feed
function refresh($feed_id)
{
try {
$feed = get($feed_id);
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if (empty($feed)) {
return false;
}
$reader = new Reader(Config\get_reader_config());
$resource = $reader->download(
$feed['feed_url'],
$feed['last_modified'],
$feed['etag']
);
// Update the `last_checked` column each time, HTTP cache or not
update_last_checked($feed_id);
// Feed modified
if ($resource->isModified()) {
$parser = $reader->getParser(
$resource->getUrl(),
$resource->getContent(),
$resource->getEncoding()
);
if ($feed['download_content']) {
$parser->enableContentGrabber();
// Don't fetch previous items, only new one
$parser->setGrabberIgnoreUrls(
Database::get('db')->table('items')->eq('feed_id', $feed_id)->findAllByColumn('url')
);
}
$feed = $parser->execute();
update_cache($feed_id, $resource->getLastModified(), $resource->getEtag());
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Item\update_all($feed_id, $feed->getItems());
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refresh_favicon($feed_id, $feed->getSiteUrl());
}
update_parsing_error($feed_id, 0);
Config\write_debug();
return true;
}
catch (InvalidUrlException $e) {
// disable($feed_id);
}
catch (PicoFeedException $e) {
}
update_parsing_error($feed_id, 1);
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Config\write_debug();
return false;
}
// Get the list of feeds ID to refresh
function get_ids($limit = LIMIT_ALL)
{
$query = Database::get('db')->table('feeds')->eq('enabled', 1)->asc('last_checked');
if ($limit !== LIMIT_ALL) {
$query->limit((int) $limit);
}
return $query->listing('id', 'id');
}
// Get feeds with no item
function get_all_empty()
{
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$feeds = Database::get('db')
->table('feeds')
->columns('feeds.id', 'feeds.title', 'COUNT(items.id) AS nb_items')
->join('items', 'feed_id', 'id')
->isNull('feeds.last_checked')
->groupBy('feeds.id')
->findAll();
foreach ($feeds as $key => &$feed) {
if ($feed['nb_items'] > 0) {
unset($feeds[$key]);
}
}
return $feeds;
}
// Get all feeds
function get_all()
{
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return Database::get('db')
->table('feeds')
->asc('title')
->findAll();
}
// Get all feeds with the number unread/total items
function get_all_item_counts()
{
$counts = Database::get('db')
->table('items')
->columns('feed_id', 'status', 'count(*) as item_count')
->in('status', array('read', 'unread'))
->groupBy('feed_id', 'status')
->findAll();
$feeds = Database::get('db')
->table('feeds')
->asc('title')
->findAll();
$item_counts = array();
foreach ($counts as &$count) {
if (! isset($item_counts[$count['feed_id']])) {
$item_counts[$count['feed_id']] = array(
'items_unread' => 0,
'items_total' => 0,
);
}
$item_counts[$count['feed_id']]['items_total'] += $count['item_count'];
if ($count['status'] === 'unread') {
$item_counts[$count['feed_id']]['items_unread'] = $count['item_count'];
}
}
foreach ($feeds as &$feed) {
if (isset($item_counts[$feed['id']])) {
$feed += $item_counts[$feed['id']];
}
else {
$feed += array(
'items_unread' => 0,
'items_total' => 0,
);
}
}
return $feeds;
}
// Get unread/total count for one feed
function count_items($feed_id)
{
$counts = Database::get('db')
->table('items')
->columns('status', 'count(*) as item_count')
->in('status', array('read', 'unread'))
->eq('feed_id', $feed_id)
->groupBy('status')
->findAll();
$result = array(
'items_unread' => 0,
'items_total' => 0,
);
foreach ($counts as &$count) {
if ($count['status'] === 'unread') {
$result['items_unread'] = (int) $count['item_count'];
}
$result['items_total'] += $count['item_count'];
}
return $result;
}
// Get one feed
function get($feed_id)
{
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return Database::get('db')
->table('feeds')
->eq('id', $feed_id)
->findOne();
}
// Update parsing error column
function update_parsing_error($feed_id, $value)
{
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Database::get('db')->table('feeds')->eq('id', $feed_id)->save(array('parsing_error' => $value));
}
// Update last check date
function update_last_checked($feed_id)
{
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Database::get('db')
->table('feeds')
->eq('id', $feed_id)
->save(array(
'last_checked' => time()
));
}
// Update Etag and last Modified columns
function update_cache($feed_id, $last_modified, $etag)
{
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Database::get('db')
->table('feeds')
->eq('id', $feed_id)
->save(array(
'last_modified' => $last_modified,
'etag' => $etag
));
}
// Remove one feed
function remove($feed_id)
{
// Items are removed by a sql constraint
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return Database::get('db')->table('feeds')->eq('id', $feed_id)->remove();
}
// Remove all feeds
function remove_all()
{
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return Database::get('db')->table('feeds')->remove();
}
// Enable a feed (activate refresh)
function enable($feed_id)
{
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return Database::get('db')->table('feeds')->eq('id', $feed_id)->save((array('enabled' => 1)));
}
// Disable feed
function disable($feed_id)
{
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return Database::get('db')->table('feeds')->eq('id', $feed_id)->save((array('enabled' => 0)));
}
// Validation for edit
function validate_modification(array $values)
{
$v = new Validator($values, array(
new Validators\Required('id', t('The feed id is required')),
new Validators\Required('title', t('The title is required')),
new Validators\Required('site_url', t('The site url is required')),
new Validators\Required('feed_url', t('The feed url is required')),
));
$result = $v->execute();
$errors = $v->getErrors();
return array(
$result,
$errors
);
}