leilukin-tumbleblog/includes/controller/Main.php

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<?php
/**
* Class: MainController
* The logic controlling the blog.
*/
class MainController extends Controllers implements Controller {
# Array: $urls
# An array of clean URL => dirty URL translations.
public $urls = array(
'|/id/post/([0-9]+)/|'
=> '/?action=id&amp;post=$1',
'|/id/page/([0-9]+)/|'
=> '/?action=id&amp;page=$1',
'|/author/([0-9]+)/|'
=> '/?action=author&amp;id=$1',
'|/random/([^/]+)/|'
=> '/?action=random&amp;feather=$1',
'|/matter/([^/]+)/|'
=> '/?action=matter&amp;url=$1',
'|/search/([^/]+)/|'
=> '/?action=search&amp;query=$1',
'|/archive/([0-9]{4})/([0-9]{2})/([0-9]{2})/|'
=> '/?action=archive&amp;year=$1&amp;month=$2&amp;day=$3',
'|/archive/([0-9]{4})/([0-9]{2})/|'
=> '/?action=archive&amp;year=$1&amp;month=$2',
'|/archive/([0-9]{4})/|'
=> '/?action=archive&amp;year=$1',
'|/([^/]+)/feed/|'
=> '/?action=$1&amp;feed'
);
# Variable: $twig
# Environment for the Twig template engine.
private $twig;
/**
* Function: __construct
* Loads the Twig parser and sets up the l10n domain.
*/
private function __construct() {
$config = Config::current();
$theme = Theme::current();
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$loader = new \Twig\Loader\FilesystemLoader(THEME_DIR);
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$this->twig = new \Twig\Environment(
$loader,
array(
"debug" => DEBUG,
"strict_variables" => DEBUG,
"charset" => "UTF-8",
"cache" => CACHES_DIR.DIR."twig",
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"autoescape" => false,
"use_yield" => true
)
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);
$this->twig->addExtension(
new Leaf()
);
$this->twig->registerUndefinedFunctionCallback(
"twig_callback_missing_function"
);
$this->twig->registerUndefinedFilterCallback(
"twig_callback_missing_filter"
);
# Load the theme translator.
load_translator($theme->safename, THEME_DIR.DIR."locale");
# Set the limit for pagination.
$this->post_limit = $config->posts_per_page;
}
/**
* Function: parse
* Route constructor calls this to interpret clean URLs and determine the action.
*/
public function parse($route): ?string {
$config = Config::current();
# Serve the index if the first arg is empty and / is not a route.
if (empty($route->arg[0]) and !isset($config->routes["/"]))
return $route->action = "index";
# Serve the index if the first arg is a query and action is unset.
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if (empty($route->action) and str_starts_with($route->arg[0], "?"))
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return $route->action = "index";
# Discover feed requests.
if (
$route->action == "feed" or
preg_match("/\/feed\/?$/", $route->request)
)
$this->feed = true;
# Discover pagination.
if (
preg_match_all(
"/\/((([^_\/]+)_)?page)\/([0-9]+)/",
$route->request,
$pages
)
) {
foreach ($pages[1] as $index => $variable)
$_GET[$variable] = (int) $pages[4][$index];
# Looks like pagination of the index.
if ($route->arg[0] == $pages[1][0])
return $route->action = "index";
}
# Archive.
if ($route->arg[0] == "archive") {
# Make sure they're numeric; could be a "/page/" in there.
if (isset($route->arg[1]) and is_numeric($route->arg[1])) {
$_GET['year'] = $route->arg[1];
if (isset($route->arg[2]) and is_numeric($route->arg[2])) {
$_GET['month'] = $route->arg[2];
if (isset($route->arg[3]) and is_numeric($route->arg[3]))
$_GET['day'] = $route->arg[3];
}
}
return $route->action = "archive";
}
# Search.
if ($route->arg[0] == "search") {
if (isset($route->arg[1]))
$_GET['query'] = $route->arg[1];
return $route->action = "search";
}
# Author.
if ($route->arg[0] == "author") {
if (isset($route->arg[1]))
$_GET['id'] = $route->arg[1];
return $route->action = "author";
}
# Random.
if ($route->arg[0] == "random") {
if (isset($route->arg[1]))
$_GET['feather'] = $route->arg[1];
return $route->action = "random";
}
# Matter.
if ($route->arg[0] == "matter") {
if (isset($route->arg[1]))
$_GET['url'] = $route->arg[1];
return $route->action = "matter";
}
# Static ID of a post or page.
if ($route->arg[0] == "id") {
if (isset($route->arg[1]) and isset($route->arg[2])) {
switch ($route->arg[1]) {
case "post":
$_GET["post"] = $route->arg[2];
break;
case "page":
$_GET["page"] = $route->arg[2];
break;
}
}
return $route->action = "id";
}
# Custom route?
$route->custom();
# Are we viewing a post?
Post::from_url(
$route->request,
$route,
array("drafts" => true)
);
# Are we viewing a page?
Page::from_url(
$route->request,
$route
);
return null;
}
/**
* Function: exempt
* Route constructor calls this to determine "view_site" exemptions.
*/
public function exempt($action): bool {
$exemptions = array(
"login",
"logout",
"register",
"activate",
"lost_password",
"reset_password"
);
return in_array($action, $exemptions);
}
/**
* Function: main_index
* Grabs the posts for the main index.
*/
public function main_index(): void {
$this->display(
"pages".DIR."index",
array(
"posts" => new Paginator(
Post::find(array("placeholders" => true)),
$this->post_limit
)
)
);
}
/**
* Function: main_updated
* Grabs the posts that have been updated.
*/
public function main_updated(): void {
$this->display(
array("pages".DIR."updated", "pages".DIR."index"),
array(
"posts" => new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array("updated_at >" => SQL_DATETIME_ZERO),
"order" => "updated_at DESC, created_at DESC, id DESC"
)
),
$this->post_limit
)
),
__("Updated posts")
);
}
/**
* Function: main_author
* Grabs the posts created by a user.
*/
public function main_author(): void {
if (empty($_GET['id']) or !is_numeric($_GET['id']))
Flash::warning(
__("You did not specify a user ID."),
"/"
);
$user = new User($_GET['id']);
if ($user->no_results)
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show_404(
__("Not Found"),
__("User not found.")
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);
$author = (object) array(
"id" => $user->id,
"name" => oneof($user->full_name, $user->login),
"website" => $user->website,
"email" => $user->email,
"joined" => $user->joined_at
);
$this->display(
array("pages".DIR."author", "pages".DIR."index"),
array(
"author" => $author,
"posts" => new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array("user_id" => $user->id)
)
),
$this->post_limit
)
),
_f("Posts created by &#8220;%s&#8221;", fix($author->name))
);
}
/**
* Function: main_archive
* Grabs the posts for the archive page.
*/
public function main_archive(): void {
$sql = SQL::current();
$statuses = Post::statuses();
$feathers = Post::feathers();
$months = array();
$posts = new Paginator(array());
fallback($_GET['year']);
fallback($_GET['month']);
fallback($_GET['day']);
# Default to either the year of the latest post or the current year.
if (!isset($_GET['year'])) {
$latest = $sql->select(
tables:"posts",
fields:"created_at",
conds:array($feathers, $statuses),
order:array("created_at DESC")
)->fetch();
$latest = ($latest === false) ?
time() :
$latest["created_at"] ;
}
$start = mktime(
0, 0, 0,
(
is_numeric($_GET['month']) ?
(int) $_GET['month'] :
1
),
(
is_numeric($_GET['day']) ?
(int) $_GET['day'] :
1
),
(
is_numeric($_GET['year']) ?
(int) $_GET['year'] :
(int) when("Y", $latest)
)
);
if (is_numeric($_GET['day'])) {
$depth = "day";
$limit = strtotime(
"tomorrow",
$start
);
$title = _f("Archive of %s", _w("d F Y", $start));
$posts = new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array(
"created_at LIKE" => when("Y-m-d%", $start)
),
"order" => "created_at DESC, id DESC"
)
),
$this->post_limit
);
} elseif (is_numeric($_GET['month'])) {
$depth = "month";
$limit = strtotime(
"midnight first day of next month",
$start
);
$title = _f("Archive of %s", _w("F Y", $start));
$posts = new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array(
"created_at LIKE" => when("Y-m-%", $start)
),
"order" => "created_at DESC, id DESC"
)
),
$this->post_limit
);
} else {
$depth = "year";
$limit = strtotime(
"midnight first day of next year",
$start
);
$title = _f("Archive of %s", _w("Y", $start));
$results = Post::find(
array(
"where" => array(
"created_at LIKE" => when("Y-%-%", $start)
),
"order" => "created_at DESC, id DESC"
)
);
foreach ($results as $result) {
$created_at = strtotime($result->created_at);
$this_month = strtotime(
"midnight first day of this month",
$created_at
);
if (!isset($months[$this_month]))
$months[$this_month] = array();
$months[$this_month][] = $result;
}
}
# Are there posts older than those displayed?
$next = $sql->select(
tables:"posts",
fields:"created_at",
conds:array(
"created_at <" => datetime($start),
$statuses,
$feathers
),
order:array("created_at DESC")
)->fetchColumn();
# Are there posts newer than those displayed?
$prev = $sql->select(
tables:"posts",
fields:"created_at",
conds:array(
"created_at >=" => datetime($limit),
$statuses,
$feathers
),
order:array("created_at ASC")
)->fetchColumn();
$prev = ($prev === false) ?
null :
strtotime($prev) ;
$next = ($next === false) ?
null :
strtotime($next) ;
$this->display(
"pages".DIR."archive",
array(
"posts" => $posts,
"months" => $months,
"archive" => array(
"when" => $start,
"depth" => $depth,
"next" => $next,
"prev" => $prev
)
),
$title
);
}
/**
* Function: main_search
* Grabs the posts and pages for a search query.
*/
public function main_search(): void {
$config = Config::current();
$visitor = Visitor::current();
# Redirect searches to a clean URL or dirty GET depending on configuration.
if (isset($_POST['query']))
redirect(
"search/".
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str_ireplace(
array("%2F", "%5C"),
"%5F",
urlencode($_POST['query'])
).
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"/"
);
if (!isset($_GET['query']) or $_GET['query'] == "")
Flash::warning(
__("Please enter a search term."),
"/"
);
list($where, $params) = keywords(
$_GET['query'],
"post_attributes.value LIKE :query OR url LIKE :query",
"posts"
);
$results = Post::find(
array(
"placeholders" => true,
"where" => $where,
"params" => $params
)
);
$ids = array();
foreach ($results[0] as $result)
$ids[] = $result["id"];
if (!empty($ids)) {
$posts = new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array("id" => $ids)
)
),
$this->post_limit
);
} else {
$posts = new Paginator(array());
}
if ($config->search_pages) {
list($where, $params) = keywords(
$_GET['query'],
"title LIKE :query OR body LIKE :query",
"pages"
);
if (!$visitor->group->can("view_page"))
$where["public"] = true;
$pages = Page::find(
array(
"where" => $where,
"params" => $params
)
);
} else {
$pages = array();
}
$this->display(
array("pages".DIR."search", "pages".DIR."index"),
array(
"posts" => $posts,
"pages" => $pages,
"search" => $_GET['query']
),
_f("Search results for &#8220;%s&#8221;", fix($_GET['query']))
);
}
/**
* Function: main_drafts
* Grabs the posts with draft status created by this user.
*/
public function main_drafts(): void {
$visitor = Visitor::current();
if (!$visitor->group->can("view_own_draft", "view_draft"))
show_403(
__("Access Denied"),
__("You do not have sufficient privileges to view drafts.")
);
$posts = new Paginator(
Post::find(
array(
"placeholders" => true,
"where" => array(
"status" => Post::STATUS_DRAFT,
"user_id" => $visitor->id)
)
),
$this->post_limit
);
$this->display(
array("pages".DIR."drafts", "pages".DIR."index"),
array("posts" => $posts),
__("Drafts")
);
}
/**
* Function: main_view
* Handles post viewing via dirty URL or clean URL.
* E.g. /year/month/day/url/.
*/
public function main_view($post = null): bool {
if (!isset($post))
$post = new Post(
array("url" => fallback($_GET['url'])),
array("drafts" => true)
);
if ($post->no_results)
return false;
if ($post->status == Post::STATUS_DRAFT)
Flash::message(
__("This post is not published.")
);
if ($post->status == Post::STATUS_SCHEDULED)
Flash::message(
__("This post is scheduled to be published.")
);
$this->display(
array("pages".DIR."view", "pages".DIR."index"),
array("post" => $post),
$post->title()
);
return true;
}
/**
* Function: main_page
* Handles page viewing via dirty URL or clean URL.
* E.g. /parent/child/child-of-child/.
*/
public function main_page($page = null): bool {
$trigger = Trigger::current();
$visitor = Visitor::current();
if (!isset($page))
$page = new Page(
array("url" => fallback($_GET['url']))
);
if ($page->no_results)
return false;
if (
!$page->public and
!$visitor->group->can("view_page") and
$page->user_id != $visitor->id
) {
$trigger->call("can_not_view_page");
show_403(
__("Access Denied"),
__("You are not allowed to view this page.")
);
}
$this->display(
array("pages".DIR."page_".$page->url, "pages".DIR."page"),
array("page" => $page),
$page->title
);
return true;
}
/**
* Function: main_id
* Views a post or page by its static ID.
*/
public function main_id(): bool {
if (!empty($_GET['post']) and is_numeric($_GET['post'])) {
$post = new Post($_GET['post']);
if ($post->no_results)
return false;
redirect($post->url());
}
if (!empty($_GET['page']) and is_numeric($_GET['page'])) {
$page = new Page($_GET['page']);
if ($page->no_results)
return false;
redirect($page->url());
}
return false;
}
/**
* Function: main_random
* Grabs a random post and redirects to it.
*/
public function main_random(): bool {
$conds = array(Post::statuses());
if (isset($_GET['feather']))
$conds["feather"] = preg_replace(
"|[^a-z_\-]|i",
"",
$_GET['feather']
);
else
$conds[] = Post::feathers();
$results = SQL::current()->select(
tables:"posts",
fields:"id",
conds:$conds
)->fetchAll();
if (!empty($results)) {
$ids = array();
foreach ($results as $result)
$ids[] = $result["id"];
shuffle($ids);
$post = new Post(reset($ids));
if ($post->no_results)
return false;
redirect($post->url());
}
Flash::warning(
__("There aren't enough posts for random selection."),
"/"
);
}
/**
* Function: main_matter
* Displays a standalone Twig template from the "pages" directory.
*/
public function main_matter(): bool {
$theme = Theme::current();
if (!isset($_GET['url']))
return false;
$matter = str_replace(array(DIR, "/"), "", $_GET['url']);
if ($matter == "")
return false;
$template = "pages".DIR."matter_".$matter;
if (!$theme->file_exists($template))
return false;
$this->display(
$template,
array(),
camelize($matter, true)
);
return true;
}
/**
* Function: main_register
* Register a visitor as a new user.
*/
public function main_register(): void {
$config = Config::current();
if (!$config->can_register)
Flash::notice(
__("This site does not allow registration."),
"/"
);
if (logged_in())
Flash::notice(
__("You cannot register an account because you are already logged in."),
"/"
);
if (!empty($_POST)) {
if (!isset($_POST['hash']) or !Session::check_token($_POST['hash']))
Flash::warning(
__("Invalid authentication token.")
);
if (empty($_POST['login']) or derezz($_POST['login']))
Flash::warning(
__("Please enter a username for your account.")
);
$check = new User(
array("login" => $_POST['login'])
);
if (!$check->no_results)
Flash::warning(
__("That username is already in use.")
);
if (empty($_POST['password1']) or empty($_POST['password2']))
Flash::warning(
__("Passwords cannot be blank.")
);
elseif ($_POST['password1'] != $_POST['password2'])
Flash::warning(
__("Passwords do not match.")
);
elseif (password_strength($_POST['password1']) < 100)
Flash::message(
__("Please consider setting a stronger password for your account.")
);
if (empty($_POST['email']))
Flash::warning(
__("Email address cannot be blank.")
);
elseif (!is_email($_POST['email']))
Flash::warning(
__("Invalid email address.")
);
if (!check_captcha())
Flash::warning(
__("Incorrect captcha response.")
);
if (!empty($_POST['website']) and !is_url($_POST['website']))
Flash::warning(
__("Invalid website URL.")
);
if (!empty($_POST['website']))
$_POST['website'] = add_scheme($_POST['website']);
fallback($_POST['full_name'], "");
fallback($_POST['website'], "");
if (!Flash::exists("warning")) {
$user = User::add(
login:$_POST['login'],
password:User::hash_password($_POST['password1']),
email:$_POST['email'],
full_name:$_POST['full_name'],
website:$_POST['website'],
group_id:$config->default_group,
approved:($config->email_activation) ? false : true
);
if (!$user->approved) {
email_activate_account($user);
Flash::notice(
__("We have emailed you an activation link."),
"/"
);
}
Visitor::log_in($user);
Flash::notice(
__("Your account is now active."),
"/"
);
}
}
$this->display(
"forms".DIR."user".DIR."register",
array(),
__("Register")
);
}
/**
* Function: main_activate
* Activates (approves) a given login.
*/
public function main_activate()/*: never */{
if (logged_in())
Flash::notice(
__("You cannot activate an account because you are already logged in."),
"/"
);
fallback($_GET['login']);
fallback($_GET['token']);
$user = new User(
array("login" => $_GET['login'])
);
if ($user->no_results)
Flash::notice(
__("Please contact the blog administrator for help with your account."),
"/"
);
$hash = token($user->login);
if (!hash_equals($hash, $_GET['token']))
Flash::warning(
__("Invalid authentication token."),
"/"
);
if ($user->approved)
Flash::notice(
__("Your account has already been activated."),
"/"
);
$user = $user->update(approved:true);
Flash::notice(
__("Your account is now active."),
"login"
);
}
/**
* Function: main_login
* Logs in a user if they provide the username and password.
*/
public function main_login(): void {
$config = Config::current();
$trigger = Trigger::current();
if (logged_in())
Flash::notice(
__("You are already logged in."),
"/"
);
if (!empty($_POST)) {
if (!isset($_POST['hash']) or !Session::check_token($_POST['hash']))
Flash::warning(
__("Invalid authentication token.")
);
fallback($_POST['login']);
fallback($_POST['password']);
# You can block the login process by creating a Flash::warning().
$trigger->call("user_authenticate");
if (!User::authenticate($_POST['login'], $_POST['password']))
Flash::warning(
__("Incorrect username and/or password.")
);
if (!Flash::exists("warning")) {
$user = new User(
array("login" => $_POST['login'])
);
if (!$user->approved and $config->email_activation)
Flash::notice(
__("You must activate your account before you log in."),
"/"
);
Visitor::log_in($user);
Flash::notice(
__("Logged in."),
fallback($_SESSION['redirect_to'], "/")
);
}
}
$this->display(
"forms".DIR."user".DIR."login",
array(),
__("Log in")
);
}
/**
* Function: main_logout
* Logs out the current user.
*/
public function main_logout()/*: never */{
if (!logged_in())
Flash::notice(
__("You aren't logged in."),
"/"
);
Visitor::log_out();
Flash::notice(
__("Logged out."),
"/"
);
}
/**
* Function: main_controls
* Updates the current user when the form is submitted.
*/
public function main_controls(): void {
$visitor = Visitor::current();
if (!logged_in())
Flash::notice(
__("You must be logged in to access user controls."),
"login"
);
if (!empty($_POST)) {
if (!isset($_POST['hash']) or !Session::check_token($_POST['hash']))
Flash::warning(
__("Invalid authentication token.")
);
if (!empty($_POST['new_password1'])) {
if (
empty($_POST['new_password2']) or
$_POST['new_password1'] != $_POST['new_password2']
) {
Flash::warning(
__("Passwords do not match.")
);
} elseif (
password_strength($_POST['new_password1']) < 100
) {
Flash::message(
__("Please consider setting a stronger password for your account.")
);
}
}
if (empty($_POST['email']))
Flash::warning(
__("Email address cannot be blank.")
);
elseif (!is_email($_POST['email']))
Flash::warning(
__("Invalid email address.")
);
if (!empty($_POST['website']) and !is_url($_POST['website']))
Flash::warning(
__("Invalid website URL.")
);
if (!empty($_POST['website']))
$_POST['website'] = add_scheme($_POST['website']);
fallback($_POST['full_name'], "");
fallback($_POST['website'], "");
if (!Flash::exists("warning")) {
$password = (!empty($_POST['new_password1'])) ?
User::hash_password($_POST['new_password1']) :
$visitor->password ;
$visitor = $visitor->update(
login:$visitor->login,
password:$password,
email:$_POST['email'],
full_name:$_POST['full_name'],
website:$_POST['website'],
group_id:$visitor->group->id
);
Flash::notice(
__("Your profile has been updated."),
"/"
);
}
}
$this->display(
"forms".DIR."user".DIR."controls",
array(),
__("Controls")
);
}
/**
* Function: main_lost_password
* Emails a password reset link to the registered address of a user.
*/
public function main_lost_password(): void {
$config = Config::current();
if (logged_in())
Flash::notice(
__("You cannot reset your password because you are already logged in."),
"/"
);
if (!$config->email_correspondence)
Flash::notice(
__("Please contact the blog administrator for help with your account."),
"/"
);
if (!empty($_POST)) {
if (!isset($_POST['hash']) or !Session::check_token($_POST['hash']))
Flash::warning(
__("Invalid authentication token.")
);
if (empty($_POST['login']))
Flash::warning(
__("Please enter your username.")
);
if (!Flash::exists("warning")) {
$user = new User(
array("login" => $_POST['login'])
);
if (!$user->no_results)
email_reset_password($user);
Flash::notice(
__("We have emailed you a password reset link."),
"/"
);
}
}
$this->display(
"forms".DIR."user".DIR."lost_password",
array(),
__("Lost password")
);
}
/**
* Function: main_reset_password
* Resets the password for a given login.
*/
public function main_reset_password(): void {
$config = Config::current();
if (logged_in())
Flash::notice(
__("You cannot reset your password because you are already logged in."),
"/"
);
fallback($_REQUEST['issue']);
fallback($_REQUEST['login']);
fallback($_REQUEST['token']);
$age = time() - intval($_REQUEST['issue']);
if ($age > PASSWORD_RESET_TOKEN_LIFETIME)
Flash::notice(
__("The link has expired. Please try again."),
"lost_password"
);
$user = new User(
array("login" => $_REQUEST['login'])
);
if ($user->no_results)
Flash::notice(
__("Please contact the blog administrator for help with your account."),
"/"
);
$hash = token(array($_REQUEST['issue'], $user->login));
if (!hash_equals($hash, $_REQUEST['token']))
Flash::warning(
__("Invalid authentication token."),
"/"
);
if (!empty($_POST)) {
if (!isset($_POST['hash']) or !Session::check_token($_POST['hash']))
Flash::warning(
__("Invalid authentication token.")
);
if (empty($_POST['new_password1']) or empty($_POST['new_password2']))
Flash::warning(
__("Passwords cannot be blank.")
);
elseif ($_POST['new_password1'] != $_POST['new_password2'])
Flash::warning(
__("Passwords do not match.")
);
elseif (password_strength($_POST['new_password1']) < 100)
Flash::message(
__("Please consider setting a stronger password for your account.")
);
if (!Flash::exists("warning")) {
$user->update(
password:User::hash_password($_POST['new_password1'])
);
Flash::notice(
__("Your profile has been updated."),
"login"
);
}
}
$this->display(
"forms".DIR."user".DIR."reset_password",
array(
"issue" => $_REQUEST['issue'],
"login" => $_REQUEST['login'],
"token" => $_REQUEST['token']
),
__("Reset password")
);
}
/**
* Function: main_webmention
* Webmention receiver endpoint.
*/
public function main_webmention(): void {
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if (!Config::current()->send_pingbacks)
error(
__("Error"),
__("Webmention support is disabled for this site."),
code:503
);
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webmention_receive(
fallback($_POST['source']),
fallback($_POST['target'])
);
}
/**
* Function: main_feed
* Grabs posts and serves a feed.
*/
public function main_feed($posts = null): void {
$config = Config::current();
$trigger = Trigger::current();
$theme = Theme::current();
# Fetch posts if we are being called as a responder.
if (!isset($posts)) {
$results = SQL::current()->select(
tables:"posts",
fields:"id",
conds:array("status" => Post::STATUS_PUBLIC),
order:array("id DESC"),
limit:$config->feed_items
)->fetchAll();
$ids = array();
foreach ($results as $result)
$ids[] = $result["id"];
if (!empty($ids)) {
$posts = Post::find(
array(
"where" => array("id" => $ids),
"order" => "created_at DESC, id DESC"
)
);
} else {
$posts = array();
}
}
if ($posts instanceof Paginator) {
$posts = $posts->reslice($config->feed_items);
$posts = $posts->paginated;
}
$latest_timestamp = 0;
foreach ($posts as $post) {
$created_at = strtotime($post->created_at);
if ($latest_timestamp < $created_at)
$latest_timestamp = $created_at;
}
if (strlen($theme->title)) {
$title = $theme->title;
$subtitle = "";
} else {
$title = $config->name;
$subtitle = $config->description;
}
$feed = new BlogFeed();
$feed->open(
title:$title,
subtitle:$subtitle,
updated:$latest_timestamp
);
foreach ($posts as $post) {
$updated = ($post->updated) ?
$post->updated_at :
$post->created_at ;
if (!$post->user->no_results) {
$author = oneof(
$post->user->full_name,
$post->user->login
);
$website = $post->user->website;
} else {
$author = null;
$website = null;
}
$feed->entry(
title:oneof($post->title(), $post->slug),
id:url("id/post/".$post->id),
content:$post->feed_content(),
link:$post->url(),
published:$post->created_at,
updated:$updated,
name:$author,
uri:$website
);
$trigger->call("feed_item", $post, $feed);
}
$feed->display();
}
/**
* Function: display
* Displays the page, or serves a feed if requested.
*
* Parameters:
* $template - The template file to display.
* $context - The context to be supplied to Twig.
* $title - The title for the page (optional).
* $pagination - <Paginator> instance (optional).
*
* Notes:
* $template is supplied sans ".twig" and relative to THEME_DIR.
* $template can be an array of fallback template filenames to try.
* $pagination will be inferred from the context if not supplied.
*/
public function display(
$template,
$context = array(),
$title = "",
$pagination = null
): void {
$config = Config::current();
$route = Route::current();
$trigger = Trigger::current();
$theme = Theme::current();
if ($this->displayed == true)
return;
# Try fallback template filenames.
if (is_array($template)) {
foreach (array_values($template) as $index => $try) {
if (
$theme->file_exists($try) or
($index + 1) == count($template)
) {
$this->display($try, $context, $title);
return;
}
}
}
$this->displayed = true;
# Discover pagination in the context.
if (!isset($pagination)) {
foreach ($context as $item) {
if ($item instanceof Paginator) {
$pagination = $item;
break;
}
}
}
# Populate the theme title attribute.
$theme->title = $title;
# Serve a feed request if detected for this action.
if ($this->feed) {
if ($trigger->exists($route->action."_feed")) {
$trigger->call($route->action."_feed", $context);
return;
}
if (isset($context["posts"])) {
$this->main_feed($context["posts"]);
return;
}
}
$this->context = array_merge($context, $this->context);
$this->context["ip"] = $_SERVER['REMOTE_ADDR'];
$this->context["DIR"] = DIR;
$this->context["version"] = CHYRP_VERSION;
$this->context["codename"] = CHYRP_CODENAME;
$this->context["debug"] = DEBUG;
$this->context["now"] = time();
$this->context["site"] = $config;
$this->context["flash"] = Flash::current();
$this->context["theme"] = $theme;
$this->context["trigger"] = $trigger;
$this->context["route"] = $route;
$this->context["visitor"] = Visitor::current();
$this->context["visitor"]->logged_in = logged_in();
$this->context["title"] = $title;
$this->context["pagination"] = $pagination;
$this->context["modules"] = Modules::$instances;
$this->context["feathers"] = Feathers::$instances;
$this->context["POST"] = $_POST;
$this->context["GET"] = $_GET;
$this->context["sql_queries"] =& SQL::current()->queries;
$this->context["sql_debug"] =& SQL::current()->debug;
$trigger->filter($this->context, "twig_context_main");
$this->twig->display($template.".twig", $this->context);
}
/**
* Function: current
* Returns a singleton reference to the current class.
*/
public static function & current(): self {
static $instance = null;
$instance = (empty($instance)) ? new self() : $instance ;
return $instance;
}
}