<?php
/**
 * @brief improve, a plugin for Dotclear 2
 *
 * @package Dotclear
 * @subpackage Plugin
 *
 * @author Jean-Christian Denis and contributors
 *
 * @copyright Jean-Christian Denis
 * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
 */
declare(strict_types=1);

namespace plugins\improve;

/* dotclear */
use dcCore;
use dcPage;

/* clearbricks */
use http;

/* php */
use arrayObject;

/**
 * Improve action class helper
 *
 * Action class must extends class action.
 * If your class signature is myActionClass extends plugins\improve\class\action,
 * do dcCore::app()->addBehavior('ImproveAddAction'), ['myClass', 'create']);
 * your action class is automatically created,
 * then function init() of your class wil be called.
 * One class must manage only one action.
 */
abstract class action
{
    /** @var array<string>  Current module */
    protected $module = [];

    /** @var string     Current full path */
    protected $path_full = '';

    /** @var string     Current file extension */
    protected $path_extension = '';

    /** @var boolean    Current path is directory */
    protected $path_is_dir = null;

    /** @var string The child class name */
    private $class_name = '';

    /** @var array<string, array>  Messages logs */
    private $logs = ['success' => [], 'warning' => [], 'error' => []];

    /** @var array<string>  Action module settings */
    private $settings = [];

    /** @var array List of allowed properties */
    protected static $allowed_properties = ['id', 'name', 'description', 'priority', 'configurator', 'types'];

    /** @var string Module id */
    private $id = '';

    /** @var string Module name */
    private $name = '';

    /** @var string Module description */
    private $description = '';

    /** @var integer Module id */
    private $priority = 500;

    /** @var boolean Module has config page */
    private $configurator = false;

    /** @var array Module supported types */
    private $types = ['plugin'];

    /**
     * Action constructor inits properties and settings of a child class.
     */
    final public function __construct()
    {
        $this->class_name = str_replace(prepend::getActionsNS(), '', get_called_class());

        $settings = dcCore::app()->blog->settings->improve->get('settings_' . $this->class_name);
        if (null != $settings) {
            $settings = unserialize($settings);
        }
        $this->settings = is_array($settings) ? $settings : [];

        $this->init();

        // can overload priority by settings
        if (1 < ($p = (int) dcCore::app()->blog->settings->improve->get('priority_' . $this->class_name))) {
            $this->priority = $p;
        }
    }

    /**
     * Helper to create an instance of a ImproveAction child class.
     *
     * @param      ArrayObject  $list    ArrayObject of actions list
     */
    final public static function create(arrayObject $list): void
    {
        $child = static::class;
        $class = new $child();
        $list->append($class);
    }

    /**
     * Action initialisation function.
     *
     * It's called when an instance of ImproveAction child class is created.
     * Usefull to setup action class.
     *
     * @return     bool  True if initialisation is ok.
     */
    abstract protected function init(): bool;

    /// @name Properties methods
    //@{
    /**
     * Get a definition property of action class
     *
     * @param      string   $key     a property or setting id
     *
     * @return     mixed    Value of property or setting of action.
     */
    final public function get(string $key)
    {
        if (isset($this->settings[$key])) {
            return $this->settings[$key];
        }

        return null;
    }

    /** Get action module id */
    final public function id(): string
    {
        return $this->id;
    }

    /** Get action module name */
    final public function name(): string
    {
        return $this->name;
    }

    /** Get action module description */
    final public function description(): string
    {
        return $this->description;
    }

    /** Get action module priority */
    final public function priority(): int
    {
        return $this->priority;
    }

    /** Get action module configuration url if any */
    final public function configurator(): bool
    {
        return $this->configurator;
    }

    /** Get action module supported types */
    final public function types(): array
    {
        return $this->types;
    }

    /**
     * Set properties of action class
     *
     * @param      array    $properties   Properties
     *
     * @return     boolean              Success
     */
    final protected function setProperties(array $properties): bool
    {
        foreach ($properties as $key => $value) {
            if (in_array($key, self::$allowed_properties)) {
                $this->{$key} = $value;
            }
        }

        return true;
    }
    //@}

    /// @name Settings methods
    //@{
    /**
     * Get a settings of action class
     *
     * @param      string $setting     a settings id
     *
     * @return     mixed  A setting of action.
     */
    final protected function getSetting(string $setting)
    {
        return $this->settings[$setting] ?? null;
    }

    /**
     * Set one or more setting of action class
     *
     * @param      mixed  $settings     one or more settings
     * @param      mixed  $value        value for a single setting
     *
     * @return     mixed  A setting of action.
     */
    final protected function setSettings($settings, $value = null)
    {
        $settings = is_array($settings) ? $settings : [$settings => $value];
        foreach ($settings as $k => $v) {
            $this->settings[$k] = $v;
        }

        return true;
    }

    /**
     * Redirection after settings update
     *
     * This save settings update before redirect.
     *
     * @param      string $url      redirect url after settings update
     */
    final protected function redirect(string $url): bool
    {
        dcCore::app()->blog->settings->improve->put(
            'settings_' . $this->class_name,
            serialize($this->settings),
            'string',
            null,
            true,
            true
        );
        dcCore::app()->blog->triggerBlog();
        dcPage::addSuccessNotice(__('Configuration successfully updated'));
        http::redirect($url);

        return true;
    }

    /**
     * Check if action class is well configured
     *
     * @return  boolean     True if class action is well configured
     */
    abstract public function isConfigured(): bool;

    /**
     * Get action configuration page header
     *
     * @return string Headers
     */
    public function header(): ?string
    {
        return null;
    }

    /**
     * Get configuraton gui
     *
     * If action class uses internal configuration,
     * it must share here html form content of its settings.
     * It must not use enclose bloc "form" nor button "save".
     * This function is also called to redirect form
     * after validation with $this->redirect($url);
     *
     * @param      string   $url    post form redirect url
     *
     * @return     string|null      A setting of action.
     */
    public function configure(string $url): ?string
    {
        return null;
    }
    //@}

    /**
     * Set in class var current module definitions.
     *
     * @see Improve::sanitizeModule()
     *
     * @param      array<string> $module      Full array of module definitons
     */
    final public function setModule(array $module): bool
    {
        $this->module = $module;

        return true;
    }

    /**
     * Set in class var current path definitons.
     *
     * @param      string   $path_full          Full path
     * @param      string   $path_extension     Path extension (if it is a file)
     * @param      boolean  $path_is_dir        True if path is a directory
     */
    final public function setPath(string $path_full, string $path_extension, bool $path_is_dir): bool
    {
        $this->path_full      = $path_full;
        $this->path_extension = $path_extension;
        $this->path_is_dir    = $path_is_dir;

        return true;
    }

    /// @name Fix methods
    //@{
    /**
     * Called when starting to fix module.
     */
    public function openModule(): ?bool
    {
        return null;
    }

    /**
     * Called when open a directory to fix.
     */
    public function openDirectory(): ?bool
    {
        return null;
    }

    /**
     * Called when open a file to fix.
     */
    public function openFile(): ?bool
    {
        return null;
    }

    /**
     * Called when read content of a file to fix.
     *
     * Content is shared from action to another.
     * If an action erase content, fix is stopped.
     * If you want to erase a content you must erase
     * the file on action openDirectory.
     *
     * @param      string $content        File content
     */
    public function readFile(string &$content): ?bool
    {
        return null;
    }

    /**
     * Called when close a file to fix.
     */
    public function closeFile(): ?bool
    {
        return null;
    }

    /**
     * Called when close a module to fix.
     */
    public function closeModule(): ?bool
    {
        return null;
    }
    //@}

    /// @name Logs methods
    //@{
    /**
     * Set an action log.
     *
     * Log must be use every time an action something happen.
     *
     * @param      string $type        type of message, can be error, warning, succes
     * @param      string $message     message to log
     *
     * @return     boolean  True if message is logged.
     */
    final public function setLog(string $type, string $message): bool
    {
        if (empty($this->path_full) || !array_key_exists($type, $this->logs)) {
            return false;
        }
        $this->logs[$type][$this->path_full][] = $message;

        return true;
    }

    /**
     * Check if action class has log of given type.
     *
     * @param      string $type        type of message, can be error, warning, succes
     *
     * @return     boolean  True if messages exist.
     */
    final public function hasLog(string $type): bool
    {
        return array_key_exists($type, $this->logs) && !empty($this->logs[$type]);
    }

    /**
     * Get action logs.
     *
     * @param      string|null $type        type of message, can be error, warning, succes
     *
     * @return     array  Arry of given type of log or all if type is null
     */
    final public function getLogs($type = null): array
    {
        if (null === $type) {
            return $this->logs;
        }
        if (empty($this->path_full)
            || !array_key_exists($type, $this->logs)
            || !array_key_exists($this->path_full, $this->logs[$type])
        ) {
            return [];
        }

        return $this->logs[$type][$this->path_full];
    }

    /**
     * Set a log of type error.
     */
    final public function setError(string $message): bool
    {
        return $this->setLog('error', $message);
    }

    /**
     * Check logs of type error exists.
     */
    final public function hasError(): bool
    {
        return !empty($this->getLogs('error'));
    }

    /**
     * Get logs of type error.
     */
    final public function getErrors(): array
    {
        return $this->getLogs('error');
    }

    /**
     * Set a log of type warning.
     */
    final public function setWarning(string $message): bool
    {
        return $this->setLog('warning', $message);
    }

    /**
     * Check logs of type error warnings.
     */
    final public function hasWarning(): bool
    {
        return !empty($this->getLogs('warning'));
    }

    /**
     * Get logs of type warning.
     */
    final public function getWarnings(): array
    {
        return $this->getLogs('warning');
    }

    /**
     * Set a log of type success.
     */
    final public function setSuccess(string $message): bool
    {
        return $this->setLog('success', $message);
    }

    /**
     * Check logs of type error success.
     */
    final public function hasSuccess(): bool
    {
        return !empty($this->getLogs('success'));
    }

    /**
     * Get logs of type success.
     */
    final public function getSuccess(): array
    {
        return $this->getLogs('success');
    }
    //@}
}