app/Config/Autoload.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+use CodeIgniter\Config\AutoloadConfig;
+
+/**
+ * -------------------------------------------------------------------
+ * AUTO-LOADER
+ * -------------------------------------------------------------------
+ *
+ * This file defines the namespaces and class maps so the Autoloader
+ * can find the files as needed.
+ *
+ * NOTE: If you use an identical key in $psr4 or $classmap, then
+ * the values in this file will overwrite the framework's values.
+ *
+ * @immutable
+ */
+class Autoload extends AutoloadConfig
+{
+    /**
+     * -------------------------------------------------------------------
+     * Namespaces
+     * -------------------------------------------------------------------
+     * This maps the locations of any namespaces in your application to
+     * their location on the file system. These are used by the autoloader
+     * to locate files the first time they have been instantiated.
+     *
+     * The 'Config' (APPPATH . 'Config') and 'CodeIgniter' (SYSTEMPATH) are
+     * already mapped for you.
+     *
+     * You may change the name of the 'App' namespace if you wish,
+     * but this should be done prior to creating any namespaced classes,
+     * else you will need to modify all of those classes for this to work.
+     *
+     * @var array<string, list<string>|string>
+     */
+    public $psr4 = [
+        APP_NAMESPACE             => APPPATH,
+        'Modules'                 => ROOTPATH . 'modules/',
+        'Modules\Admin'           => ROOTPATH . 'modules/Admin/',
+        'Modules\Analytics'       => ROOTPATH . 'modules/Analytics/',
+        'Modules\Api\Rest\V1'     => ROOTPATH . 'modules/Api/Rest/V1',
+        'Modules\Auth'            => ROOTPATH . 'modules/Auth/',
+        'Modules\Fediverse'       => ROOTPATH . 'modules/Fediverse/',
+        'Modules\Install'         => ROOTPATH . 'modules/Install/',
+        'Modules\Media'           => ROOTPATH . 'modules/Media/',
+        'Modules\MediaClipper'    => ROOTPATH . 'modules/MediaClipper/',
+        'Modules\Platforms'       => ROOTPATH . 'modules/Platforms/',
+        'Modules\Plugins'         => ROOTPATH . 'modules/Plugins/',
+        'Modules\PodcastImport'   => ROOTPATH . 'modules/PodcastImport/',
+        'Modules\PremiumPodcasts' => ROOTPATH . 'modules/PremiumPodcasts/',
+        'Modules\Update'          => ROOTPATH . 'modules/Update/',
+        'Modules\WebSub'          => ROOTPATH . 'modules/WebSub/',
+        'Themes'                  => ROOTPATH . 'themes',
+        'ViewComponents'          => APPPATH . 'Libraries/ViewComponents/',
+        'ViewThemes'              => APPPATH . 'Libraries/ViewThemes/',
+    ];
+
+    /**
+     * -------------------------------------------------------------------
+     * -------------------------------------------------------------------
+     * The class map provides a map of class names and their exact
+     * location on the drive. Classes loaded in this manner will have
+     * slightly faster performance because they will not have to be
+     * searched for within one or more directories as they would if they
+     * were being autoloaded through a namespace.
+     *
+     * Prototype:
+     *
+     *   $classmap = [
+     *       'MyClass'   => '/path/to/class/file.php'
+     *   ];
+     *
+     * @var array<string, string>
+     */
+    public $classmap = [];
+
+    /**
+     * -------------------------------------------------------------------
+     * Files
+     * -------------------------------------------------------------------
+     * The files array provides a list of paths to __non-class__ files
+     * that will be autoloaded. This can be useful for bootstrap operations
+     * or for loading functions.
+     *
+     * Prototype:
+     *
+     *	  $files = [
+     *	 	   '/path/to/my/file.php',
+     *    ];
+     *
+     * @var list<string>
+     */
+    public $files = [];
+
+    /**
+     * -------------------------------------------------------------------
+     * Helpers
+     * -------------------------------------------------------------------
+     * Prototype:
+     *   $helpers = [
+     *       'form',
+     *   ];
+     *
+     * @var list<string>
+     */
+    public $helpers = ['auth', 'setting', 'plugins'];
+}

app/Config/Boot/development.php

+<?php
+
+declare(strict_types=1);
+
+/**
+ * --------------------------------------------------------------------------
+ * ERROR DISPLAY
+ * --------------------------------------------------------------------------
+ * In development, we want to show as many errors as possible to help
+ * make sure they don't make it to production. And save us hours of
+ * painful debugging.
+ *
+ * If you set 'display_errors' to '1', CI4's detailed error report will show.
+ */
+error_reporting(E_ALL);
+ini_set('display_errors', '1');
+
+/**
+ * --------------------------------------------------------------------------
+ * DEBUG BACKTRACES
+ * --------------------------------------------------------------------------
+ * If true, this constant will tell the error screens to display debug
+ * backtraces along with the other error information. If you would
+ * prefer to not see this, set this value to false.
+ */
+defined('SHOW_DEBUG_BACKTRACE') || define('SHOW_DEBUG_BACKTRACE', true);
+
+/**
+ * --------------------------------------------------------------------------
+ * DEBUG MODE
+ * --------------------------------------------------------------------------
+ * Debug mode is an experimental flag that can allow changes throughout
+ * the system. This will control whether Kint is loaded, and a few other
+ * items. It can always be used within your own application too.
+ */
+defined('CI_DEBUG') || define('CI_DEBUG', true);

app/Config/Boot/production.php

+<?php
+
+declare(strict_types=1);
+
+/**
+ * --------------------------------------------------------------------------
+ * ERROR DISPLAY
+ * --------------------------------------------------------------------------
+ * Don't show ANY in production environments. Instead, let the system catch
+ * it and display a generic error message.
+ *
+ * If you set 'display_errors' to '1', CI4's detailed error report will show.
+ */
+error_reporting(E_ALL & ~E_DEPRECATED);
+// If you want to suppress more types of errors.
+// error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT & ~E_USER_NOTICE & ~E_USER_DEPRECATED);
+ini_set('display_errors', '0');
+
+/**
+ * --------------------------------------------------------------------------
+ * DEBUG MODE
+ * --------------------------------------------------------------------------
+ * Debug mode is an experimental flag that can allow changes throughout
+ * the system. It's not widely used currently, and may not survive
+ * release of the framework.
+ */
+defined('CI_DEBUG') || define('CI_DEBUG', false);

app/Config/Boot/testing.php

+<?php
+
+declare(strict_types=1);
+
+/*
+ * The environment testing is reserved for PHPUnit testing. It has special
+ * conditions built into the framework at various places to assist with that.
+ * You can’t use it for your development.
+ */
+
+/**
+ * --------------------------------------------------------------------------
+ * ERROR DISPLAY
+ * --------------------------------------------------------------------------
+ * In development, we want to show as many errors as possible to help
+ * make sure they don't make it to production. And save us hours of
+ * painful debugging.
+ */
+error_reporting(E_ALL);
+ini_set('display_errors', '1');
+
+/**
+ * --------------------------------------------------------------------------
+ * DEBUG BACKTRACES
+ * --------------------------------------------------------------------------
+ * If true, this constant will tell the error screens to display debug
+ * backtraces along with the other error information. If you would
+ * prefer to not see this, set this value to false.
+ */
+defined('SHOW_DEBUG_BACKTRACE') || define('SHOW_DEBUG_BACKTRACE', true);
+
+/**
+ * --------------------------------------------------------------------------
+ * DEBUG MODE
+ * --------------------------------------------------------------------------
+ * Debug mode is an experimental flag that can allow changes throughout
+ * the system. It's not widely used currently, and may not survive
+ * release of the framework.
+ */
+defined('CI_DEBUG') || define('CI_DEBUG', true);

app/Config/CURLRequest.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+use CodeIgniter\Config\BaseConfig;
+
+class CURLRequest extends BaseConfig
+{
+    /**
+     * --------------------------------------------------------------------------
+     * CURLRequest Share Options
+     * --------------------------------------------------------------------------
+     *
+     * Whether share options between requests or not.
+     *
+     * If true, all the options won't be reset between requests.
+     * It may cause an error request with unnecessary headers.
+     */
+    public bool $shareOptions = false;
+}

app/Config/Cache.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+use CodeIgniter\Cache\CacheInterface;
+use CodeIgniter\Cache\Handlers\DummyHandler;
+use CodeIgniter\Cache\Handlers\FileHandler;
+use CodeIgniter\Cache\Handlers\MemcachedHandler;
+use CodeIgniter\Cache\Handlers\PredisHandler;
+use CodeIgniter\Cache\Handlers\RedisHandler;
+use CodeIgniter\Cache\Handlers\WincacheHandler;
+use CodeIgniter\Config\BaseConfig;
+
+class Cache extends BaseConfig
+{
+    /**
+     * --------------------------------------------------------------------------
+     * Primary Handler
+     * --------------------------------------------------------------------------
+     *
+     * The name of the preferred handler that should be used. If for some reason
+     * it is not available, the $backupHandler will be used in its place.
+     */
+    public string $handler = 'file';
+
+    /**
+     * --------------------------------------------------------------------------
+     * Backup Handler
+     * --------------------------------------------------------------------------
+     *
+     * The name of the handler that will be used in case the first one is
+     * unreachable. Often, 'file' is used here since the filesystem is
+     * always available, though that's not always practical for the app.
+     */
+    public string $backupHandler = 'dummy';
+
+    /**
+     * --------------------------------------------------------------------------
+     * Key Prefix
+     * --------------------------------------------------------------------------
+     *
+     * This string is added to all cache item names to help avoid collisions
+     * if you run multiple applications with the same cache engine.
+     */
+    public string $prefix = '';
+
+    /**
+     * --------------------------------------------------------------------------
+     * Default TTL
+     * --------------------------------------------------------------------------
+     *
+     * The default number of seconds to save items when none is specified.
+     *
+     * WARNING: This is not used by framework handlers where 60 seconds is
+     * hard-coded, but may be useful to projects and modules. This will replace
+     * the hard-coded value in a future release.
+     */
+    public int $ttl = 60;
+
+    /**
+     * --------------------------------------------------------------------------
+     * Reserved Characters
+     * --------------------------------------------------------------------------
+     *
+     * A string of reserved characters that will not be allowed in keys or tags.
+     * Strings that violate this restriction will cause handlers to throw.
+     * Default: {}()/\@:
+     *
+     * Note: The default set is required for PSR-6 compliance.
+     */
+    public string $reservedCharacters = '{}()/\@:';
+
+    /**
+     * --------------------------------------------------------------------------
+     * File settings
+     * --------------------------------------------------------------------------
+     *
+     * Your file storage preferences can be specified below, if you are using
+     * the File driver.
+     *
+     * @var array<string, string|int|null>
+     */
+    public array $file = [
+        'storePath' => WRITEPATH . 'cache/',
+        'mode'      => 0640,
+    ];
+
+    /**
+     * -------------------------------------------------------------------------
+     * Memcached settings
+     * -------------------------------------------------------------------------
+     *
+     * Your Memcached servers can be specified below, if you are using
+     * the Memcached drivers.
+     *
+     * @see https://codeigniter.com/user_guide/libraries/caching.html#memcached
+     *
+     * @var array<string, string|int|bool>
+     */
+    public array $memcached = [
+        'host'   => '127.0.0.1',
+        'port'   => 11211,
+        'weight' => 1,
+        'raw'    => false,
+    ];
+
+    /**
+     * -------------------------------------------------------------------------
+     * Redis settings
+     * -------------------------------------------------------------------------
+     * Your Redis server can be specified below, if you are using
+     * the Redis or Predis drivers.
+     *
+     * @var array<string, string|int|null>
+     */
+    public array $redis = [
+        'host'     => '127.0.0.1',
+        'password' => null,
+        'port'     => 6379,
+        'timeout'  => 0,
+        'database' => 0,
+    ];
+
+    /**
+     * --------------------------------------------------------------------------
+     * Available Cache Handlers
+     * --------------------------------------------------------------------------
+     *
+     * This is an array of cache engine alias' and class names. Only engines
+     * that are listed here are allowed to be used.
+     *
+     * @var array<string, class-string<CacheInterface>>
+     */
+    public array $validHandlers = [
+        'dummy'     => DummyHandler::class,
+        'file'      => FileHandler::class,
+        'memcached' => MemcachedHandler::class,
+        'predis'    => PredisHandler::class,
+        'redis'     => RedisHandler::class,
+        'wincache'  => WincacheHandler::class,
+    ];
+
+    /**
+     * --------------------------------------------------------------------------
+     * Web Page Caching: Cache Include Query String
+     * --------------------------------------------------------------------------
+     *
+     * Whether to take the URL query string into consideration when generating
+     * output cache files. Valid options are:
+     *
+     *    false = Disabled
+     *    true  = Enabled, take all query parameters into account.
+     *            Please be aware that this may result in numerous cache
+     *            files generated for the same page over and over again.
+     *    ['q'] = Enabled, but only take into account the specified list
+     *            of query parameters.
+     *
+     * @var bool|list<string>
+     */
+    public $cacheQueryString = false;
+}

app/Config/Colors.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+use CodeIgniter\Config\BaseConfig;
+
+class Colors extends BaseConfig
+{
+    /**
+     * @var array<string, array<string, mixed>>
+     */
+    public array $themes = [
+        /* Castopod's brand color */
+        'pine' => [
+            'accent-base'     => [174, 100, 29],
+            'accent-hover'    => [172, 100, 17],
+            'accent-muted'    => [131, 100, 12],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [172, 100, 17],
+            'heading-background' => [111, 64, 94],
+
+            'background-elevated'   => [0, 0, 100],
+            'background-base'       => [173, 44, 96],
+            'background-navigation' => [172, 100, 17],
+            'background-header'     => [172, 100, 17],
+            'background-highlight'  => [111, 64, 94],
+            'background-backdrop'   => [0, 0, 50],
+
+            'border-subtle'     => [111, 42, 86],
+            'border-contrast'   => [0, 0, 0],
+            'border-navigation' => [131, 100, 12],
+
+            'text-base'  => [158, 8, 3],
+            'text-muted' => [172, 8, 38],
+        ],
+        /* Red / Rose color */
+        'crimson' => [
+            'accent-base'     => [350, 87, 61],
+            'accent-hover'    => [348, 75, 40],
+            'accent-muted'    => [348, 73, 32],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [348, 73, 32],
+            'heading-background' => [344, 79, 96],
+
+            'background-elevated'  => [0, 0, 100],
+            'background-base'      => [350, 44, 96],
+            'background-header'    => [348, 75, 40],
+            'background-highlight' => [344, 79, 96],
+            'background-backdrop'  => [0, 0, 50],
+
+            'border-subtle'   => [348, 42, 86],
+            'border-contrast' => [0, 0, 0],
+
+            'text-base'  => [340, 8, 3],
+            'text-muted' => [345, 8, 38],
+        ],
+        /* Blue color */
+        'lake' => [
+            'accent-base'     => [194, 100, 44],
+            'accent-hover'    => [194, 100, 22],
+            'accent-muted'    => [195, 100, 11],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [194, 100, 22],
+            'heading-background' => [195, 100, 92],
+
+            'background-elevated'  => [0, 0, 100],
+            'background-base'      => [196, 44, 96],
+            'background-header'    => [194, 100, 22],
+            'background-highlight' => [195, 100, 92],
+            'background-backdrop'  => [0, 0, 50],
+
+            'border-subtle'   => [195, 42, 86],
+            'border-contrast' => [0, 0, 0],
+
+            'text-base'  => [194, 8, 3],
+            'text-muted' => [195, 8, 38],
+        ],
+        /* Orange color */
+        'amber' => [
+            'accent-base'     => [17, 100, 57],
+            'accent-hover'    => [17, 100, 35],
+            'accent-muted'    => [17, 100, 24],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [17, 100, 35],
+            'heading-background' => [17, 100, 89],
+
+            'background-elevated'  => [0, 0, 100],
+            'background-base'      => [15, 44, 96],
+            'background-header'    => [17, 100, 35],
+            'background-highlight' => [17, 100, 89],
+            'background-backdrop'  => [0, 0, 50],
+
+            'border-subtle'   => [17, 42, 86],
+            'border-contrast' => [0, 0, 0],
+
+            'text-base'  => [15, 8, 3],
+            'text-muted' => [17, 8, 38],
+        ],
+        /* Violet color */
+        'jacaranda' => [
+            'accent-base'     => [254, 72, 52],
+            'accent-hover'    => [254, 73, 30],
+            'accent-muted'    => [254, 71, 19],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [254, 73, 30],
+            'heading-background' => [254, 73, 84],
+
+            'background-elevated'  => [0, 0, 100],
+            'background-base'      => [253, 44, 96],
+            'background-header'    => [254, 73, 30],
+            'background-highlight' => [254, 88, 91],
+            'background-backdrop'  => [0, 0, 50],
+
+            'border-subtle'   => [254, 42, 86],
+            'border-contrast' => [0, 0, 0],
+
+            'text-base'  => [253, 8, 3],
+            'text-muted' => [254, 8, 38],
+        ],
+        /* Black color */
+        'onyx' => [
+            'accent-base'     => [240, 17, 2],
+            'accent-hover'    => [240, 17, 17],
+            'accent-muted'    => [240, 17, 17],
+            'accent-contrast' => [0, 0, 100],
+
+            'heading-foreground' => [240, 17, 17],
+            'heading-background' => [240, 17, 94],
+
+            'background-elevated'  => [0, 0, 100],
+            'background-base'      => [240, 17, 96],
+            'background-header'    => [240, 12, 17],
+            'background-highlight' => [240, 17, 94],
+            'background-backdrop'  => [0, 0, 50],
+
+            'border-subtle'   => [240, 17, 86],
+            'border-contrast' => [0, 0, 0],
+
+            'text-base'  => [240, 8, 3],
+            'text-muted' => [240, 8, 38],
+        ],
+    ];
+}

app/Config/Constants.php

+<?php
+
+declare(strict_types=1);
+
+/*
+ | --------------------------------------------------------------------
+ | Castopod Version
+ | --------------------------------------------------------------------
+ |
+ | The Castopod version number to display.
+ |
+ | NOTE: this constant is updated upon release with Continuous Integration.
+ */
+defined('CP_VERSION') || define('CP_VERSION', '2.0.0-next.3');
+
+/*
+ | --------------------------------------------------------------------
+ | App Namespace
+ | --------------------------------------------------------------------
+ |
+ | This defines the default Namespace that is used throughout
+ | CodeIgniter to refer to the Application directory. Change
+ | this constant to change the namespace that all application
+ | classes should use.
+ |
+ | NOTE: changing this will require manually modifying the
+ | existing namespaces of App* namespaced-classes.
+ */
+defined('APP_NAMESPACE') || define('APP_NAMESPACE', 'App');
+
+/*
+ | --------------------------------------------------------------------
+ | Plugins Path
+ | --------------------------------------------------------------------
+ |
+ | This defines the folder in which plugins will live.
+ */
+defined('PLUGINS_PATH') ||
+    define('PLUGINS_PATH', ROOTPATH . 'plugins' . DIRECTORY_SEPARATOR);
+
+defined('PLUGINS_KEY_PATTERN') ||
+    define('PLUGINS_KEY_PATTERN', '[a-z0-9]([_.-]?[a-z0-9]+)*\/[a-z0-9]([_.-]?[a-z0-9]+)*');
+
+/*
+ | --------------------------------------------------------------------------
+ | Composer Path
+ | --------------------------------------------------------------------------
+ |
+ | The path that Composer's autoload file is expected to live. By default,
+ | the vendor folder is in the Root directory, but you can customize that here.
+ */
+defined('COMPOSER_PATH') ||
+    define('COMPOSER_PATH', ROOTPATH . 'vendor/autoload.php');
+
+/*
+ |--------------------------------------------------------------------------
+ | Timing Constants
+ |--------------------------------------------------------------------------
+ |
+ | Provide simple ways to work with the myriad of PHP functions that
+ | require information to be in seconds.
+ */
+defined('SECOND') || define('SECOND', 1);
+defined('MINUTE') || define('MINUTE', 60);
+defined('HOUR') || define('HOUR', 3600);
+defined('DAY') || define('DAY', 86400);
+defined('WEEK') || define('WEEK', 604800);
+defined('MONTH') || define('MONTH', 2_592_000);
+defined('YEAR') || define('YEAR', 31_536_000);
+defined('DECADE') || define('DECADE', 315_360_000);
+
+/*
+ | --------------------------------------------------------------------------
+ | Exit Status Codes
+ | --------------------------------------------------------------------------
+ |
+ | Used to indicate the conditions under which the script is exit()ing.
+ | While there is no universal standard for error codes, there are some
+ | broad conventions.  Three such conventions are mentioned below, for
+ | those who wish to make use of them.  The CodeIgniter defaults were
+ | chosen for the least overlap with these conventions, while still
+ | leaving room for others to be defined in future versions and user
+ | applications.
+ |
+ | The three main conventions used for determining exit status codes
+ | are as follows:
+ |
+ |    Standard C/C++ Library (stdlibc):
+ |       http://www.gnu.org/software/libc/manual/html_node/Exit-Status.html
+ |       (This link also contains other GNU-specific conventions)
+ |    BSD sysexits.h:
+ |       http://www.gsp.com/cgi-bin/man.cgi?section=3&topic=sysexits
+ |    Bash scripting:
+ |       http://tldp.org/LDP/abs/html/exitcodes.html
+ |
+ */
+defined('EXIT_SUCCESS') || define('EXIT_SUCCESS', 0); // no errors
+defined('EXIT_ERROR') || define('EXIT_ERROR', 1); // generic error
+defined('EXIT_CONFIG') || define('EXIT_CONFIG', 3); // configuration error
+defined('EXIT_UNKNOWN_FILE') || define('EXIT_UNKNOWN_FILE', 4); // file not found
+defined('EXIT_UNKNOWN_CLASS') || define('EXIT_UNKNOWN_CLASS', 5); // unknown class
+defined('EXIT_UNKNOWN_METHOD') || define('EXIT_UNKNOWN_METHOD', 6); // unknown class member
+defined('EXIT_USER_INPUT') || define('EXIT_USER_INPUT', 7); // invalid user input
+defined('EXIT_DATABASE') || define('EXIT_DATABASE', 8); // database error
+defined('EXIT__AUTO_MIN') || define('EXIT__AUTO_MIN', 9); // lowest automatically-assigned error code
+defined('EXIT__AUTO_MAX') || define('EXIT__AUTO_MAX', 125); // highest automatically-assigned error code

app/Config/DocTypes.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+/**
+ * @immutable
+ */
+class DocTypes
+{
+    /**
+     * List of valid document types.
+     *
+     * @var array<string, string>
+     */
+    public array $list = [
+        'xhtml11'           => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">',
+        'xhtml1-strict'     => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">',
+        'xhtml1-trans'      => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
+        'xhtml1-frame'      => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">',
+        'xhtml-basic11'     => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.1//EN" "http://www.w3.org/TR/xhtml-basic/xhtml-basic11.dtd">',
+        'html5'             => '<!DOCTYPE html>',
+        'html4-strict'      => '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">',
+        'html4-trans'       => '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">',
+        'html4-frame'       => '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">',
+        'mathml1'           => '<!DOCTYPE math SYSTEM "http://www.w3.org/Math/DTD/mathml1/mathml.dtd">',
+        'mathml2'           => '<!DOCTYPE math PUBLIC "-//W3C//DTD MathML 2.0//EN" "http://www.w3.org/Math/DTD/mathml2/mathml2.dtd">',
+        'svg10'             => '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">',
+        'svg11'             => '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">',
+        'svg11-basic'       => '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Basic//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-basic.dtd">',
+        'svg11-tiny'        => '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">',
+        'xhtml-math-svg-xh' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">',
+        'xhtml-math-svg-sh' => '<!DOCTYPE svg:svg PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">',
+        'xhtml-rdfa-1'      => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">',
+        'xhtml-rdfa-2'      => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.1//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-2.dtd">',
+    ];
+
+    /**
+     * Whether to remove the solidus (`/`) character for void HTML elements (e.g. `<input>`)
+     * for HTML5 compatibility.
+     *
+     * Set to:
+     *    `true` - to be HTML5 compatible
+     *    `false` - to be XHTML compatible
+     */
+    public bool $html5 = true;
+}

app/Config/Embed.php

+<?php
+
+declare(strict_types=1);
+
+namespace Config;
+
+use CodeIgniter\Config\BaseConfig;
+
+class Embed extends BaseConfig
+{
+    /**
+     * --------------------------------------------------------------------------
+     * Embeddable player config
+     * --------------------------------------------------------------------------
+     */
+    public int $width = 485;
+
+    public int $height = 112;
+}