<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Step class.
 *
 * @package    tool_usertours
 * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace tool_usertours;


> use context_system;
defined('MOODLE_INTERNAL') || die();
> use stdClass;

> 


/**
 * Step class.
 *
 * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class step {

    /**
     * @var     int     $id         The id of the step.
     */
    protected $id;

    /**
     * @var     int     $tourid     The id of the tour that this step belongs to.
     */
    protected $tourid;

    /**
     * @var     tour    $tour       The tour class that this step belongs to.
     */
    protected $tour;

    /**
     * @var     string  $title      The title of the step.
     */
    protected $title;

    /**
     * @var     string  $content    The content of this step.
     */
    protected $content;

    /**

>      * @var     int  $contentformat    The content format: FORMAT_MOODLE/FORMAT_HTML/FORMAT_PLAIN/FORMAT_MARKDOWN.
     * @var     int     $targettype The type of target.
>      */
     */
>     protected $contentformat;
    protected $targettype;
> 

>     /**


    /**
     * @var     string  $targetvalue    The value for this type of target.
     */
    protected $targetvalue;

    /**
     * @var     int     $sortorder  The sort order.
     */
    protected $sortorder;

    /**
     * @var     object  $config     The configuration as an object.
     */
    protected $config;

    /**
     * @var     bool    $dirty      Whether the step has been changed since it was loaded
     */
    protected $dirty = false;

    /**

>      * @var bool $isimporting Whether the step is being imported or not.
     * Fetch the step instance.
>      */
     *
>     protected $isimporting;
     * @param   int             $id         The id of the step to be retrieved.
> 
     * @return  step
>     /**
     */
>      * @var stdClass[] $files The list of attached files for this step.
    public static function instance($id) {
>      */
        $step = new step();
>     protected $files = [];
        return $step->fetch($id);
> 
    }
>     /**



    /**
     * Load the step instance.
     *
     * @param   stdClass        $record     The step record to be loaded.

<      * @param   boolean         $clean      Clean the values.



>      * @param bool $clean Clean the values.
>      * @param bool $isimporting Whether the step is being imported or not.


     * @return  step
     */

<     public static function load_from_record($record, $clean = false) {



>     public static function load_from_record($record, $clean = false, bool $isimporting = false) {


        $step = new self();

>         $step->set_importing($isimporting);


        return $step->reload_from_record($record, $clean);
    }

    /**
     * Fetch the step instance.
     *
     * @param   int             $id         The id of the step to be retrieved.
     * @return  step
     */
    protected function fetch($id) {
        global $DB;

        return $this->reload_from_record(
            $DB->get_record('tool_usertours_steps', array('id' => $id))
        );
    }

    /**
     * Refresh the current step from the datbase.
     *
     * @return  step
     */
    protected function reload() {
        return $this->fetch($this->id);
    }

    /**
     * Reload the current step from the supplied record.
     *
     * @param   stdClass        $record     The step record to be loaded.

<      * @param   boolean         $clean      Clean the values.



>      * @param bool $clean Clean the values.


     * @return  step
     */
    protected function reload_from_record($record, $clean = false) {
        $this->id           = $record->id;
        $this->tourid       = $record->tourid;
        if ($clean) {
            $this->title    = clean_param($record->title, PARAM_TEXT);
            $this->content  = clean_text($record->content);
        } else {
            $this->title    = $record->title;
            $this->content  = $record->content;
        }

>         $this->contentformat = isset($record->contentformat) ? $record->contentformat : FORMAT_MOODLE;


        $this->targettype   = $record->targettype;
        $this->targetvalue  = $record->targetvalue;
        $this->sortorder    = $record->sortorder;
        $this->config       = json_decode($record->configdata);
        $this->dirty        = false;


>         if ($this->isimporting && isset($record->files)) {
        return $this;
>             // We are importing/exporting the step.
    }
>             $this->files = $record->files;

>         }
    /**
> 


     * Get the ID of the step.

>      * Set the import state for the step.
     *
>      *
     * @return  int
>      * @param bool $isimporting True if the step is imported, otherwise false.
     */
>      * @return void
    public function get_id() {
>      */
        return $this->id;
>     protected function set_importing(bool $isimporting = false): void {
    }
>         $this->isimporting = $isimporting;

>     }
    /**
> 
     * Get the Tour ID of the step.
>     /**


     *
     * @return  int
     */
    public function get_tourid() {
        return $this->tourid;
    }

    /**
     * Get the Tour instance that this step belongs to.
     *
     * @return  tour
     */
    public function get_tour() {
        if ($this->tour === null) {
            $this->tour = tour::instance($this->tourid);
        }
        return $this->tour;
    }

    /**
     * Set the id of the tour.
     *
     * @param   int             $value      The id of the tour.
     * @return  self
     */
    public function set_tourid($value) {
        $this->tourid = $value;
        $this->tour = null;
        $this->dirty = true;

        return $this;
    }

    /**
     * Get the Title of the step.
     *
     * @return  string
     */
    public function get_title() {
        return $this->title;
    }

    /**
     * Set the title for this step.
     *
     * @param   string      $value      The new title to use.
     * @return  $this
     */
    public function set_title($value) {
        $this->title = clean_text($value);
        $this->dirty = true;

        return $this;
    }

    /**

>      * Get the content format of the step.
     * Get the body content of the step.
>      *
     *
>      * @return  int
     * @return  string
>      */
     */
>     public function get_contentformat(): int {
    public function get_content() {
>         return $this->contentformat;
        return $this->content;
>     }
    }
> 

>     /**


    /**
     * Set the content value for this step.
     *
     * @param   string      $value      The new content to use.

>      * @param   int         $format     The new format to use: FORMAT_MOODLE/FORMAT_HTML/FORMAT_PLAIN/FORMAT_MARKDOWN.


     * @return  $this
     */

<     public function set_content($value) {



>     public function set_content($value, $format = FORMAT_HTML) {


        $this->content = clean_text($value);

>         $this->contentformat = $format;


        $this->dirty = true;

        return $this;
    }

    /**
     * Get the content value for this step.
     *
     * @return  string
     */
    public function get_targettype() {
        return $this->targettype;
    }

    /**
     * Set the type of target for this step.
     *
     * @param   string      $value      The new target to use.
     * @return  $this
     */
    public function set_targettype($value) {
        $this->targettype = $value;
        $this->dirty = true;

        return $this;
    }

    /**
     * Get the target value for this step.
     *
     * @return  string
     */
    public function get_targetvalue() {
        return $this->targetvalue;
    }

    /**
     * Set the target value for this step.
     *
     * @param   string      $value      The new target value to use.
     * @return  $this
     */
    public function set_targetvalue($value) {
        $this->targetvalue = $value;
        $this->dirty = true;

        return $this;
    }

    /**
     * Get the target instance for this step.
     *
     * @return  target
     */
    public function get_target() {
        return target::get_target_instance($this);
    }

    /**
     * Get the current sortorder for this step.
     *
     * @return  int
     */
    public function get_sortorder() {
        return (int) $this->sortorder;
    }

    /**
     * Whether this step is the first step in the tour.
     *
     * @return  boolean
     */
    public function is_first_step() {
        return ($this->get_sortorder() === 0);
    }

    /**
     * Whether this step is the last step in the tour.
     *
     * @return  boolean
     */
    public function is_last_step() {
        $stepcount = $this->get_tour()->count_steps();
        return ($this->get_sortorder() === $stepcount - 1);
    }

    /**
     * Set the sortorder for this step.
     *
     * @param   int         $value      The new sortorder to use.
     * @return  $this
     */
    public function set_sortorder($value) {
        $this->sortorder = $value;
        $this->dirty = true;

        return $this;
    }

    /**
     * Get the link to move this step up in the sortorder.
     *
     * @return  moodle_url
     */
    public function get_moveup_link() {
        return helper::get_move_step_link($this->get_id(), helper::MOVE_UP);
    }

    /**
     * Get the link to move this step down in the sortorder.
     *
     * @return  moodle_url
     */
    public function get_movedown_link() {
        return helper::get_move_step_link($this->get_id(), helper::MOVE_DOWN);
    }

    /**
     * Get the value of the specified configuration item.
     *
     * If notvalue was found, and no default was specified, the default for the tour will be used.
     *
     * @param   string      $key        The configuration key to set.
     * @param   mixed       $default    The default value to use if a value was not found.
     * @return  mixed
     */
    public function get_config($key = null, $default = null) {
        if ($this->config === null) {
            $this->config = (object) array();
        }

        if ($key === null) {
            return $this->config;
        }

        if ($this->get_targettype() !== null) {
            $target = $this->get_target();
            if ($target->is_setting_forced($key)) {
                return $target->get_forced_setting_value($key);
            }
        }

        if (property_exists($this->config, $key)) {
            return $this->config->$key;
        }

        if ($default !== null) {
            return $default;
        }

        return $this->get_tour()->get_config($key);
    }

    /**
     * Set the configuration item as specified.
     *
     * @param   string      $key        The configuration key to set.
     * @param   mixed       $value      The new value for the configuration item.
     * @return  $this
     */
    public function set_config($key, $value) {
        if ($this->config === null) {
            $this->config = (object) array();
        }

        if ($value === null) {
            unset($this->config->$key);
        } else {
            $this->config->$key = $value;
        }
        $this->dirty = true;

        return $this;
    }

    /**
     * Get the edit link for this step.
     *
     * @return  moodle_url
     */
    public function get_edit_link() {
        return helper::get_edit_step_link($this->tourid, $this->id);
    }

    /**
     * Get the delete link for this step.
     *
     * @return  moodle_url
     */
    public function get_delete_link() {
        return helper::get_delete_step_link($this->id);
    }

    /**

>      * Embed attached file to the json file for step.
     * Prepare this step for saving to the database.
>      *
     *
>      * @return array List of files.
     * @return  object
>      */
     */
>     protected function embed_files(): array {
    public function to_record() {
>         $systemcontext = context_system::instance();
        return (object) array(
>         $fs = get_file_storage();
            'id'            => $this->id,
>         $areafiles = $fs->get_area_files($systemcontext->id, 'tool_usertours', 'stepcontent', $this->id);
            'tourid'        => $this->tourid,
>         $files = [];
            'title'         => $this->title,
>         foreach ($areafiles as $file) {
            'content'       => $this->content,
>             if ($file->is_directory()) {
            'targettype'    => $this->targettype,
>                 continue;
            'targetvalue'   => $this->targetvalue,
>             }
            'sortorder'     => $this->sortorder,
>             $files[] = [
            'configdata'    => json_encode($this->config),
>                 'name' => $file->get_filename(),
        );
>                 'path' => $file->get_filepath(),
    }
>                 'content' => base64_encode($file->get_content()),

>                 'encode' => 'base64'
    /**
>             ];
     * Calculate the next sort-order value.
>         }
     *
> 
     * @return  int
>         return $files;
     */
>     }
    protected function calculate_sortorder() {
> 
        $count = $this->get_tour()->count_steps();
>     /**
        $this->sortorder = $count;
>      * Get the embed files information and create store_file for this step.

>      *
        return $this;
>      * @return void
    }
>      */

>     protected function extract_files() {
    /**
>         $fs = get_file_storage();
     * Save the tour and it's configuration to the database.
>         $systemcontext = context_system::instance();
     *
>         foreach ($this->files as $file) {
     * @param   boolean     $force      Whether to force writing to the database.
>             $filename = $file->name;
     * @return  $this
>             $filepath = $file->path;
     */
>             $filecontent = $file->content;
    public function persist($force = false) {
>             $filerecord = [
        global $DB;
>                 'contextid' => $systemcontext->id,

>                 'component' => 'tool_usertours',
        if (!$this->dirty && !$force) {
>                 'filearea' => 'stepcontent',
            return $this;
>                 'itemid' => $this->get_id(),
        }
>                 'filepath' => $filepath,

>                 'filename' => $filename,
        if ($this->id) {
>             ];
            $record = $this->to_record();
>             $fs->create_file_from_string($filerecord, base64_decode($filecontent));
            $DB->update_record('tool_usertours_steps', $record);
>         }
        } else {
>     }
            $this->calculate_sortorder();
> 
            $record = $this->to_record();
>     /**


            unset($record->id);

>      * @param bool $isexporting Whether the step is being exported or not.



<     public function to_record() {
<         return (object) array(



>     public function to_record(bool $isexporting = false) {
>         $record = [


        }

>             'contentformat' => $this->contentformat,



<         );



>         ];
>         if ($isexporting) {
>             // We are exporting the step, adding files node to the json record.
>             $record['files'] = $this->embed_files();
>         }
>         return (object) $record;


        $this->reload();

>         $systemcontext = context_system::instance();

>         if ($draftid = file_get_submitted_draft_itemid('content')) {
        // Notify of a change to the step configuration.
>             // Take any files added to the stepcontent draft file area and
        // This must be done separately to tour change notifications.
>             // convert them into the proper event description file area. Also
        cache::notify_step_change($this->get_tourid());
>             // parse the content text and replace the URLs to the draft files

>             // with the @@PLUGIN_FILE@@ placeholder to be persisted in the DB.
        // Notify the cache that a tour has changed.
>             $this->content = file_save_draft_area_files(
        // Tours are only stored in the cache if there are steps.
>                 $draftid,
        // If there step count has changed for some reason, this will change the potential cache results.
>                 $systemcontext->id,
        cache::notify_tour_change();
>                 'tool_usertours',

>                 'stepcontent',
        return $this;
>                 $this->id,
    }
>                 ['subdirs' => true],

>                 $this->content
    /**
>             );
     * Remove this step.
>             $DB->set_field('tool_usertours_steps', 'content', $this->content, ['id' => $this->id]);
     */
>         }
    public function remove() {
> 
        global $DB;
>         if ($this->isimporting) {

>             // We are importing the step, we need to create store_file from the json record.
        if ($this->id === null) {
>             $this->extract_files();
            return;
>         }


        }

        $DB->delete_records('tool_usertours_steps', array('id' => $this->id));
        $this->get_tour()->reset_step_sortorder();

        // Notify of a change to the step configuration.
        // This must be done separately to tour change notifications.
        cache::notify_step_change($this->get_id());

        // Notify the cache that a tour has changed.
        // Tours are only stored in the cache if there are steps.
        // If there step count has changed for some reason, this will change the potential cache results.
        cache::notify_tour_change();
    }

    /**
     * Get the list of possible placement options.
     *
     * @return  array
     */
    public function get_placement_options() {
        return configuration::get_placement_options(true);
    }

    /**
     * The list of possible configuration keys.
     *
     * @return  array
     */
    public static function get_config_keys() {
        return [
            'placement',
            'orphan',
            'backdrop',
            'reflex',
        ];
    }

    /**
     * Add the step configuration to the form.
     *
     * @param   MoodleQuickForm $mform      The form to add configuration to.
     * @return  $this
     */
    public function add_config_to_form(\MoodleQuickForm $mform) {
        $tour = $this->get_tour();

        $options = configuration::get_placement_options($tour->get_config('placement'));
        $mform->addElement('select', 'placement', get_string('placement', 'tool_usertours'), $options);
        $mform->addHelpButton('placement', 'placement', 'tool_usertours');

        $this->add_config_field_to_form($mform, 'orphan');
        $this->add_config_field_to_form($mform, 'backdrop');
        $this->add_config_field_to_form($mform, 'reflex');

        return $this;
    }

    /**
     * Add the specified step field configuration to the form.
     *
     * @param   MoodleQuickForm $mform      The form to add configuration to.
     * @param   string          $key        The key to add.
     * @return  $this
     */
    public function add_config_field_to_form(\MoodleQuickForm $mform, $key) {
        $tour = $this->get_tour();

        $default = (bool) $tour->get_config($key);

        $options = [
            true    => get_string('yes'),
            false   => get_string('no'),
        ];

        if (!isset($options[$default])) {
            $default = configuration::get_default_value($key);
        }

        $options = array_reverse($options, true);
        $options[configuration::TOURDEFAULT] = get_string('defaultvalue', 'tool_usertours', $options[$default]);
        $options = array_reverse($options, true);

        $mform->addElement('select', $key, get_string($key, 'tool_usertours'), $options);
        $mform->setDefault($key, configuration::TOURDEFAULT);
        $mform->addHelpButton($key, $key, 'tool_usertours');

        return $this;
    }

    /**
     * Prepare the configuration data for the moodle form.
     *
     * @return  object
     */
    public function prepare_data_for_form() {
        $data = $this->to_record();
        foreach (self::get_config_keys() as $key) {
            $data->$key = $this->get_config($key, configuration::get_step_default_value($key));
        }

        if ($this->get_targettype() !== null) {
            $this->get_target()->prepare_data_for_form($data);
        }


>         // Prepare content for editing in a form 'editor' field type.
        return $data;
>         $draftitemid = file_get_submitted_draft_itemid('tool_usertours');
    }
>         $systemcontext = context_system::instance();

>         $data->content = [
    /**
>             'format' => $data->contentformat,
     * Handle submission of the step editing form.
>             'itemid' => $draftitemid,
     *
>             'text' => file_prepare_draft_area(
     * @param   local\forms\editstep  $mform      The sumitted form.
>                 $draftitemid,
     * @param   stdClass        $data       The submitted data.
>                 $systemcontext->id,
     * @return  $this
>                 'tool_usertours',
     */
>                 'stepcontent',
    public function handle_form_submission(local\forms\editstep &$mform, \stdClass $data) {
>                 $this->id,
        $this->set_title($data->title);
>                 ['subdirs' => true],
        $this->set_content($data->content);
>                 $data->content
        $this->set_targettype($data->targettype);
>             ),

>         ];
        $this->set_targetvalue($this->get_target()->get_value_from_form($data));
> 



<     public function handle_form_submission(local\forms\editstep &$mform, \stdClass $data) {



>     public function handle_form_submission(local\forms\editstep &$mform, stdClass $data) {



<         $this->set_content($data->content);



>         $this->set_content($data->content['text'], $data->content['format']);


            if (!$this->get_target()->is_setting_forced($key)) {
                if (isset($data->$key)) {
                    $value = $data->$key;
                } else {
                    $value = configuration::TOURDEFAULT;
                }
                if ($value === configuration::TOURDEFAULT) {
                    $this->set_config($key, null);
                } else {
                    $this->set_config($key, $value);
                }
            }
        }

        $this->persist();

        return $this;
    }

    /**
     * Attempt to fetch any matching langstring if the string is in the
     * format identifier,component.
     *

>      * @deprecated since Moodle 4.0 MDL-72783. Please use helper::get_string_from_input() instead.


     * @param   string  $string
     * @return  string
     */
    public static function get_string_from_input($string) {

<         $string = trim($string);
< 
<         if (preg_match('|^([a-zA-Z][a-zA-Z0-9\.:/_-]*),([a-zA-Z][a-zA-Z0-9\.:/_-]*)$|', $string, $matches)) {
<             if ($matches[2] === 'moodle') {
<                 $matches[2] = 'core';



>         debugging('Use of ' . __FUNCTION__ .
>             '() have been deprecated, please update your code to use helper::get_string_from_input()', DEBUG_DEVELOPER);
>         return helper::get_string_from_input($string);


            }


<             if (get_string_manager()->string_exists($matches[1], $matches[2])) {
<                 $string = get_string($matches[1], $matches[2]);



>     /**
>      * Attempt to replace PIXICON placeholder with the correct images for tour step content.
>      *
>      * @param string $content Tour content
>      * @return string Processed tour content
>      */
>     public static function get_step_image_from_input(string $content): string {
>         if (strpos($content, '@@PIXICON') === false) {
>             return $content;


            }

> 
        }
>         $content = preg_replace_callback('%@@PIXICON::(?P<identifier>([^::]*))::(?P<component>([^@@]*))@@%',

>             function(array $matches) {
        return $string;
>                 global $OUTPUT;
    }
>                 $component = $matches['component'];
}
>                 if ($component == 'moodle') {
>                     $component = 'core';



>                 return \html_writer::img($OUTPUT->image_url($matches['identifier'], $component)->out(false), '',
>                     ['class' => 'img-fluid']);
>             },
>             $content
>         );



<         return $string;



>         return $content;