<?php if ( ! defined( 'ABSPATH' ) ) exit;
/**
* Class NF_Updates_CacheCollateCleanup
*
* This class manages the step process of running through the CacheCollateCleanup required update.
* It will define an object to pull data from (if necessary) to pick back up if exited early.
* It will then step over each table in our structure and ensure that orphan records are removed from storage.
* It will then step over all submissions, removing any orphans.
* It will then step over all submissions (by form), updating or removing any orphan field records.
* After completing the above for every form on the site, it will remove the data object that manages its location.
*/
class NF_Updates_CacheCollateCleanup extends NF_Abstracts_RequiredUpdate
{
private $data = array();
private $running = array();
/**
* The denominator object for calculating our steps.
* @var Integer
*/
private $divisor = 500;
private $stage;
private $stage_complete = false;
/**
* Constructor
*
* @param $data (Array) The data object passed in by the AJAX call.
* @param $running (Array) The array of required updates being run.
*
* @since 3.4.0
*/
public function __construct( $data = array(), $running )
{
// Build our arguments array.
$args = array(
'slug' => 'CacheCollateCleanup',
'class_name' => 'NF_Updates_CacheCollateCleanup',
'debug' => false,
);
$this->data = $data;
$this->running = $running;
// Call the parent constructor.
parent::__construct( $args );
// Begin processing.
$this->process();
}
/**
* Function to loop over the batch.
*
* @since 3.4.0
*/
public function process()
{
// If we've not already started...
if ( ! isset( $this->running[ 0 ][ 'running' ] ) ) {
// Run our startup method.
$this->startup();
}
$this->stage = $this->running[ 0 ][ 'stages' ][ 0 ];
// Determine what process to run.
switch ( $this->stage[ 'table' ] ) {
case 'submissions':
// If we've cleaned out all orphan submissions...
if ( $this->stage[ 'purged' ] ) {
// Work on clearing out orphan field records.
$this->adopt_fields();
} // Otherwise... (We still have orphan submissions.)
else {
// Remove orphan submissions.
$this->adopt_subs();
}
break;
default:
// If we need to step over this process...
if ( $this->divisor < $this->stage[ 'parent_total' ] ) {
// Call stepped deletion.
$this->do_step_delete();
} // Otherwise... (We don't need to step over this.)
else {
// Call simple deletion.
$this->do_easy_delete();
}
// Increment our step count.
$this->running[ 0 ][ 'current' ] += 1;
break;
}
// If we have completed the current stage...
if ( $this->stage_complete ) {
// Remove it from our list.
array_shift( $this->running[ 0 ][ 'stages' ] );
} // Otherwise... (We have not completed the stage)
else {
// Record our changes.
$this->running[ 0 ][ 'stages' ][ 0 ] = $this->stage;
}
// Prepare to output our number of steps and current step.
$this->response[ 'stepsTotal' ] = $this->running[ 0 ][ 'steps' ];
$this->response[ 'currentStep' ] = $this->running[ 0 ][ 'current' ];
// If we have no stages left...
if ( empty( $this->running[ 0 ][ 'stages' ] ) ) {
// Run our cleanup method.
$this->cleanup();
}
// Prepare to output the number of updates remaining.
$this->response[ 'updatesRemaining' ] = count( $this->running );
// Record our current location in the process.
update_option( 'ninja_forms_doing_required_updates', $this->running );
// Respond to the AJAX call.
$this->respond();
}
/**
* Function to run any setup steps necessary to begin processing.
*
* @since 3.4.0
*/
public function startup()
{
// Record that we're processing the update.
$this->running[ 0 ][ 'running' ] = true;
// Get the number of records in the forms table.
$form_count = $this->get_total( 'nf3_forms' );
// Get the number of records in the fields table.
$action_count = $this->get_total( 'nf3_actions' );
// Get the number of records in the actions table.
$field_count = $this->get_total( 'nf3_fields' );
// Get the number of records in the objects table.
$object_count = $this->get_total( 'nf3_objects' );
// Get all form_ids from the db for the submissions portion.
$sql = "SELECT `id` FROM `{$this->db->prefix}nf3_forms`";
$forms = $this->db->get_results( $sql, 'ARRAY_A' );
$stages = array(
array(
'table' => $this->db->prefix . 'nf3_form_meta',
'parent' => $this->db->prefix . 'nf3_forms',
'parent_total' => $form_count,
),
array(
'table' => $this->db->prefix . 'nf3_actions',
'parent' => $this->db->prefix . 'nf3_forms',
'parent_total' => $form_count,
),
array(
'table' => $this->db->prefix . 'nf3_action_meta',
'parent' => $this->db->prefix . 'nf3_actions',
'parent_total' => $action_count,
),
array(
'table' => $this->db->prefix . 'nf3_fields',
'parent' => $this->db->prefix . 'nf3_forms',
'parent_total' => $form_count,
),
array(
'table' => $this->db->prefix . 'nf3_field_meta',
'parent' => $this->db->prefix . 'nf3_fields',
'parent_total' => $field_count,
),
array(
'table' => $this->db->prefix . 'nf3_object_meta',
'parent' => $this->db->prefix . 'nf3_objects',
'parent_total' => $object_count,
),
array(
'table' => 'submissions',
'parent_total' => $form_count,
'purged' => false,
'forms' => $forms,
),
);
$add = 0;
// Set the steps for form meta (enforcing a minimum step count).
$add = ceil( $form_count / $this->divisor );
$steps = ( 0 == $add ) ? 1 : $add;
// Add actions and fields.
$steps *= 3;
// Add action meta (enforcing a minimum step count).
$add = ceil( $action_count / $this->divisor );
$add = ( 0 == $add ) ? 1 : $add;
$steps += $add;
// Add field meta (enforcing a minimum step count).
$add = ceil( $field_count / $this->divisor );
$add = ( 0 == $add ) ? 1 : $add;
$steps += $add;
// Add object meta (enforcing a minimum step count).
$add = ceil( $object_count / $this->divisor );
$add = ( 0 == $add ) ? 1 : $add;
$steps += $add;
// Add one plus the form count for submissions (enforcing a minimum step count).
$add = $form_count + 1;
$add = ( 1 == $add ) ? 2 : $add;
$steps += $add;
$this->running[ 0 ][ 'stages' ] = $stages;
// Record the total number of steps in this batch.
$this->running[ 0 ][ 'steps' ] = $steps;
// Record our current step (defaulted to 0 here).
$this->running[ 0 ][ 'current' ] = 0;
}
/**
* Function to cleanup any lingering temporary elements of a required update after completion.
*
* @since 3.4.0
*/
public function cleanup()
{
// Remove the current process from the array.
array_shift( $this->running );
// Record to our updates setting that this update is complete.
$this->confirm_complete();
// If we have no updates left to process...
if ( empty( $this->running ) ) {
// Call the parent cleanup method.
parent::cleanup();
}
}
/**
* Function to get the number of objects in a table.
*
* @param $table (String) The name of the target table.
*
* @return (Int) The count of rows.
*
* @since 3.4.0
*/
public function get_total( $table )
{
$sql = "SELECT COUNT( `id` ) AS Total FROM `{$this->db->prefix}{$table}`;";
$result = $this->db->get_results( $sql, 'ARRAY_A' );
return intval( $result[ 0 ][ 'Total' ] );
}
/**
* Function to perform a simple, single-step delete of orphan data.
*
* @since 3.4.0
* @updated 3.4.11
*/
private function do_easy_delete()
{
// Remove the orphan records.
$sql = "DELETE FROM `{$this->stage[ 'table' ]}`
WHERE `parent_id` NOT IN(
SELECT `id` FROM `{$this->stage[ 'parent' ]}`
)";
// Protect favorite fields from being removed.
if ( false !== strpos( $this->stage[ 'table' ], 'nf3_fields' ) ) {
$sql .= " AND `parent_id` <> 0";
}
$this->query( $sql );
// Confirm that this stage is complete.
$this->stage_complete = true;
}
/**
* Function to perform a multi-step delete of orphan data.
*
* @since 3.4.0
* @updated 3.4.11
*/
private function do_step_delete()
{
// Get records from our table.
$sub_sql = "SELECT DISTINCT( `parent_id` ) AS id FROM `{$this->stage[ 'table' ]}` ";
// If we have a previous last record...
if ( isset( $this->stage[ 'last' ] ) ) {
// Make sure we exclude anything before it from the result.
$sub_sql .= "WHERE `parent_id` > " . $this->stage[ 'last' ] . " ";
} // Protect favorite fields from being removed.
elseif ( false !== strpos( $this->stage[ 'table' ], 'nf3_fields' ) ) {
$sub_sql .= "WHERE `parent_id` <> 0 ";
}
$sub_sql .= "ORDER BY `parent_id` ASC
LIMIT {$this->divisor};";
$result = $this->db->get_results( $sub_sql, 'ARRAY_A' );
// Get the last affected row.
$last = end( $result );
// Squash our results to get a non-associative array.
$result = $this->array_squash( $result );
$this->stage[ 'last' ] = intval( $last[ 'id' ] );
// Get records from the parent table.
$sql = "SELECT `id` FROM `{$this->stage[ 'parent' ]}`
WHERE `id` IN(" . implode( ', ', $result ) .
");";
$parent_result = $this->db->get_results( $sql, 'ARRAY_A' );
// If we didn't get the same number of results...
if ( count( $result ) !== count( $parent_result ) ) {
// Merge our results.
$result = array_merge( $result, $parent_result );
// Convert the array to something we can sort by duplicates.
$temp = array_count_values( array_column( $result, 'id' ) );
// Get rid of all values that had more than 1 result.
$temp = array_filter( $temp, array( $this, 'uniquify' ) );
// Schedule all of the single result values for deletion.
$delete = implode( ', ', array_keys( $temp ) );
$sql = "DELETE FROM `{$this->stage[ 'table' ]}`
WHERE `parent_id` IN( {$delete} );";
$this->query( $sql );
}
// If we've not already determined the limit of this table...
if ( ! isset( $this->stage[ 'max' ] ) ) {
// Fetch the maximum value.
$sql = "SELECT MAX( `parent_id` ) as target FROM `{$this->stage[ 'table' ]}`";
$result = $this->db->get_results( $sql, 'ARRAY_A' );
// Save a reference to it.
$this->stage[ 'max' ] = intval( $result[ 0 ][ 'target' ] );
}
// If our last record is equal to our maximum record...
if ( $this->stage[ 'last' ] == $this->stage[ 'max' ] ) {
// Record that we're done with this stage.
$this->stage_complete = true;
}
}
/**
* Function called by array_filter to remove ALL duplicate results.
*
* @param $v (Int) The number of results.
*
* @return (Boolean)
*
* @since 3.4.0
*/
private function uniquify( $v )
{
// If we have 1 result, keep it.
return $v == 1;
}
/**
* Function to remove orphan submissions from the posts and postmeta tables.
*
* @since 3.4.0
*/
private function adopt_subs()
{
// Fetch a limited number of orphan subs to delete.
$sub_sql = "SELECT m.post_id AS id from `{$this->db->prefix}postmeta` AS m
LEFT OUTER JOIN `{$this->db->prefix}posts` AS p
ON m.post_id = p.id
WHERE m.meta_key = '_form_id'
AND p.post_type = 'nf_sub'
AND m.meta_value NOT IN(
SELECT `id` from `{$this->db->prefix}nf3_forms`
)
ORDER BY m.post_id ASC
LIMIT {$this->divisor};";
$result = $this->db->get_results( $sub_sql, 'ARRAY_A' );
// Count them.
$count = count( $result );
// Squash our results to get a non-associative array.
$result = $this->array_squash( $result );
// If we have records to be deleted...
if ( 0 < $count ) {
// Remove their postmeta.
$sql = "DELETE FROM `{$this->db->prefix}postmeta`
WHERE post_id IN(" . implode( ', ', $result ) . ");";
$this->query( $sql );
// Remove the posts.
$sql = "DELETE FROM `{$this->db->prefix}posts`
WHERE id IN(" . implode( ', ', $result ) . ");";
$this->query( $sql );
}
// If the number of affected rows was less than our divisor...
if ( $count < $this->divisor ) {
// Mark that we've completed the process.
$this->stage[ 'purged' ] = true;
// Increment our step count.
$this->running[ 0 ][ 'current' ] += 1;
}
}
/**
* Function to remove orphan field data that's still attached
* to valid submissions from the postmeta table.
*
* @since 3.4.0
*/
private function adopt_fields()
{
// Get the form to work with.
$form = array_pop( $this->stage[ 'forms' ] );
// Fetch meta rows that match our criteria.
$sql = "SELECT r.meta_id, r.meta_key AS field_id
FROM `{$this->db->prefix}posts` AS p
LEFT JOIN `{$this->db->prefix}postmeta` AS r
ON r.post_id = p.id
LEFT JOIN `{$this->db->prefix}postmeta` AS f
ON f.post_id = p.id
WHERE p.post_type = 'nf_sub'
AND f.meta_key = '_form_id'
AND f.meta_value = " . intval( $form[ 'id' ] ) . "
AND r.meta_key LIKE '_field_%' ";
// If last is set...
if ( isset( $form[ 'last' ] ) ) {
// Make sure we're getting new results instead of old ones.
$sql .= "AND r.meta_id > {$form[ 'last' ]} ";
}
$sql .= "ORDER BY r.meta_id ASC
LIMIT {$this->divisor};";
$results = $this->db->get_results( $sql, 'ARRAY_A' );
// Count them.
$count = count( $results );
// Get the last result.
if ( 0 < $count ) {
$last = end( $results );
$last = $last[ 'meta_id' ];
reset( $results );
}
// Get all fields associated with this form.
$sql = "SELECT id FROM `{$this->db->prefix}nf3_fields` WHERE parent_id = " . intval( $form[ 'id' ] ) . ";";
$fields = $this->db->get_results( $sql, 'ARRAY_A' );
// Squash our results to get a non-associative array.
$fields = $this->array_squash( $fields );
$bad_records = array();
// For each result...
foreach( $results as $result ) {
// Pull the text out of our meta.
$id = str_replace( '_field_', '', $result[ 'field_id' ] );
$id = intval( $id );
// If this field isn't on the form...
if ( ! in_array( $id, $fields ) ) {
// Add it to our list to check later.
$bad_records[ $id ][] = $result[ 'meta_id' ];
}
}
// Get a list of any old_field_ids from our field table update.
$sql = "SELECT f.id AS new_id, m.meta_value AS id
FROM `{$this->db->prefix}nf3_fields` AS f
LEFT JOIN `{$this->db->prefix}nf3_field_meta` AS m
ON f.id = m.parent_id
WHERE f.parent_id = " . intval( $form[ 'id' ] ) . "
AND m.meta_key = 'old_field_id';";
$old_ids = $this->db->get_results( $sql, 'ARRAY_A' );
// Squash our results to get an associative array.
$old_ids = $this->array_squash( $old_ids );
// For each id in the bad records list...
foreach ( $bad_records as $field => $meta ) {
// If we have a new ID for that record...
if ( isset( $old_ids[ $field ] ) ) {
// Update our submissions.
$sql = "UPDATE `{$this->db->prefix}postmeta`
SET `meta_key` = '_field_" . $old_ids[ $field ] . "'
WHERE `meta_id` IN(" . implode( ', ', $meta ) . ");";
$this->query( $sql );
} // Otherwise... (We don't have a new ID for it.)
else {
// Delete the orphan record.
$sql = "DELETE FROM `{$this->db->prefix}postmeta`
WHERE `meta_id` IN(" . implode( ', ', $meta ) . ");";
$this->query( $sql );
}
}
// If the number of affected rows was less than our divisor...
if ( $count < $this->divisor ) {
// Increment our step count.
$this->running[ 0 ][ 'current' ] += 1;
} // Otherwise... (We need to continue.)
else {
// Record where we stopped.
$form[ 'last' ] = intval( $last );
// Put our form back on the stack.
array_push( $this->stage[ 'forms' ], $form );
}
// If there are no forms left to process...
if ( empty( $this->stage[ 'forms' ] ) ) {
// Mark that this stage is done.
$this->stage_complete = true;
}
}
/**
* Function to compress our db results into a more useful format.
*
* @param $data (Array) The result to be compressed.
*
* @return (Array) Associative if our data was complex.
* Non-associative if our data was a single item.
*
* @since 3.4.0
*/
private function array_squash( $data )
{
$response = array();
// For each item in the array...
foreach ( $data as $row ) {
// If the item has more than 1 attribute...
if ( 1 < count( $row ) ) {
// Assign the data to an associated result.
$response[ $row[ 'id' ] ] = $row;
// Unset the id setting, as that will be the key.
unset( $response[ $row[ 'id' ] ][ 'id' ] );
} // Otherwise... (We only have 1 attribute.)
else {
// Add the id to the stack in a non-associated result.
$response[] = intval( $row[ 'id' ] );
}
}
return $response;
}
}
في الآونة الأخيرة، اجتاح تريند “Ghibli Style” منصات التواصل الاجتماعي، حيث يقوم المستخدمون بتحويل صورهم الشخصية إلى لوحات فنية مستوحاة من أسلوب استوديو جيبلي الياباني الشهير. هذا التريند، الذي يعتمد على تقنيات الذكاء الاصطناعي، أثار إعجاب الكثيرين بجمالياته الفنية، لكنه في الوقت ذاته فتح الباب أمام مخاوف تتعلق بالخصوصية وسرقة البيانات، إلى جانب تأثيره على الفنانين التقليديين.
جاذبية فنية لكنها مثيرة للقلق
توضح شيري مدحت، مدرسة رسم وفنانة تشكيلية، أن التريند “يجذب الناس لأنه بيحول صورهم لحاجة شبه أفلام الطفولة اللي فيها خيال وسحر”، مضيفة: “لكن المشكلة إنه بيعتمد على أدوات ذكاء صناعي مش بيحترم مجهود الفنان اللي بيتعب سنين علشان يوصل لنفس النتيجة يدوي”. وأشارت إلى أن تكرار الاعتماد على تلك الأدوات قد “يسيء لفكرة الفن نفسه ويهمّش دور الرسام والمصمم الحقيقي، وده خطر على المهنة مش بس على الفنانين”
أما جوليا عبده، طالبة جامعية ومستخدمة للتريند، فقالت: “أنا أول ما شفت الناس بيحطوا صورهم بأسلوب جيبلي كنت مبسوطة وعايزة أعمل زيهم، حسيت إنها طريقة ظريفة أظهر بيها شكلي في صورة كرتونية جميلة”. لكنها أضافت: “بصراحة بعد ما قريت إن ممكن التطبيق يحتفظ بالصور أو يستخدمها من غير إذني بدأت أتردد، بس برضه ما قدرتش أقاوم أجربه”.
مخاوف قانونية حول الخصوصية
من جانبه، حذر المحامي أبانوب عادل من الانجراف وراء هذه الترندات دون وعي قانوني، قائلًا: “فيه تطبيقات فعلاً بتاخد الصور وبتخلي المستخدم يوافق على بنود قانونية مخفية زي إنهم يقدروا يستخدموا الصورة في التدريب أو الدعاية أو حتى يبيعوها”، مضيفًا أن “في مصر فيه قانون لحماية البيانات الشخصية لكن تطبيقه لسه مش كافي خصوصًا في الحاجات اللي بتحصل على منصات أجنبية”. وشدد على أن “أي شخص يتضرر بسبب استخدام غير مصرح به لصورته يقدر يشتكي، بس لازم يثبت الضرر ويعرف التطبيق تبع مين، ودي مشكلة في ذاتها”.
و تشير منصات تقنية مثل Proton إلى أن “بمجرد مشاركة صورك الشخصية مع الذكاء الاصطناعي، تفقد السيطرة على كيفية استخدامها”. كما حذّرت الباحثة البريطانية Elle Farrell-Kingsley من أن تحميل الصور على هذه الأنظمة قد يعرّض المستخدمين، خصوصًا الأطفال، لانتهاكات في الخصوصية أو استخدامات غير أخلاقية.
بين انبهار المستخدمين بجمال الصور وتحذيرات الخبراء، يبقى تريند “Ghibli Style” نموذجًا جديدًا لصراع قديم: التكنولوجيا في مواجهة الفن، والذكاء الاصطناعي في مواجهة الخصوصية. فهل نحن أمام وسيلة للتعبير الإبداعي أم أمام فخ رقمي جديد يتسلل إلينا من خلف شاشة هاتف ذكي؟
