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File Name : data-migration.php

<?php

namespace ElementsKit_Lite\Libs\Xs_Migration;

abstract class Data_Migration implements Migration_Contract {

const SUB_ROUTINE_STATUS_INCOMPLETE = '__incomplete';
	const SUB_ROUTINE_STATUS_DONE       = '__done';

const GENERIC_STATUS_YES = 'yes';
	const GENERIC_STATUS_NO  = 'no';

const STATUS_DONE    = 'done';
	const STATUS_QUEUED  = 'queued';
	const STATUS_RUNNING = 'running';

const STATUS_FINISHED  = 'finished';
	const STATUS_INITIATED = 'initiated';

const STATUS_METHOD_PAUSED    = 'paused';
	const STATUS_METHOD_EXECUTED  = 'executed';
	const STATUS_METHOD_EXECUTING = 'executing';

private $new_text_domain = 'elementskit-lite';
	private $text_domain     = 'elementskit-lite';
	private $max_iteration   = 10;

/**
	 * @param $txtDomain
	 * @param $versionFrom
	 * @param $versionTo
	 *
	 * @return mixed
	 */
	public function input( $txtDomain, $versionFrom, $versionTo ) {

#$versionFrom = '1.1.9';
		#$versionTo   = '1.2.0';
		$optionKey = 'data_migration_' . $txtDomain . '_log';

$from = str_replace( '.', '_', trim( $versionFrom ) );
		$to   = str_replace( '.', '_', trim( $versionTo ) );

$frm = $this->makeFullVersionKey( $from );
		$trm = $this->makeFullVersionKey( $to );

$existingOption = get_option( $optionKey );

if ( empty( $existingOption ) ) {

$log   = array();
			$log[] = 'Migration never has been done for this domain.';
			$log[] = 'Initiating migration for version ' . $versionFrom . ' to ' . $versionTo . ' at ' . gmdate( 'Y-m-d H:i:s' ) . ' .';
			$log[] = 'Scanning migration file for conversion methods.';

$cStack = $this->getCallStacks( array(), $frm, $trm );

$fn = array();

foreach ( $cStack['stack'] as $item ) {

$fn[ $item ] = self::STATUS_QUEUED;
			}

$log[] = 'Execution plan prepared.';
			$log[] = 'Execution plan saved into database.';

$existingOption['_func']   = $fn;
			$existingOption['_log']    = $log;
			$existingOption['_status'] = self::STATUS_INITIATED;

update_option( $optionKey, $existingOption );

return array(
				'status' => 'success',
				'log'    => $existingOption,
				'log2'   => $cStack,
			);
		}

/**
		 * Now we have something saved into database
		 * lets check the status first
		 *
		 */

if ( $existingOption['_status'] == self::STATUS_FINISHED ) {

$log = $existingOption['_log'];

/**
			 * Now we have to check up-to which version this migration is done
			 */

$up_to = $this->makeFullVersionKey( $existingOption['_last_version_scanned'] );

if ( $up_to < $trm ) {

/**
				 * New version released of this plugin
				 * check if anything new need to migrate
				 */

$cStack = $this->getCallStacks( array(), $frm, $trm );
				$fn     = $existingOption['_func'];

$log[] = 'A new version update detected.';
				$log[] = 'Scanning for new migration method.';

$found = false;

foreach ( $cStack['stack'] as $item ) {

if ( isset( $fn[ $item ] ) ) {
						continue;
					}

$fn[ $item ] = self::STATUS_QUEUED;

$found = true;
				}

if ( $found ) {

$log[] = 'New conversion method detected.';
					$log[] = 'Preparing execution plan.';
					$log[] = 'Execution plan saved into database.';

$existingOption['_func']   = $fn;
					$existingOption['_log']    = $log;
					$existingOption['_status'] = self::STATUS_INITIATED;

update_option( $optionKey, $existingOption );

return array(
						'status' => 'success',
						'log'    => $existingOption,
						'log2'   => $cStack,
					);

} else {

$log[] = 'No new conversion method detected.';
					$log[] = 'Updating the migration plan as finished for version ' . $versionTo . ' at ' . gmdate( 'Y-m-d H:i:s' ) . '.';

$existingOption['_func']                 = $fn;
					$existingOption['_log']                  = $log;
					$existingOption['_status']               = self::STATUS_FINISHED;
					$existingOption['_last_version_scanned'] = $versionTo;
					$existingOption['_plan_up_to']           = $trm;

update_option( $optionKey, $existingOption );

return array(
						'status' => 'success',
						'log'    => $existingOption,
						'log2'   => $cStack,
					);
				}           
			}

/**
			 * As status is finished and last scanned version is same as the current plugin version
			 * code execution should not come here
			 * If any case it come to this point we are updating the settings
			 */

$log[] = 'In no scenario, execution pointer should not come here [something is wrong...].';

$existingOption['_log']                  = $log;
			$existingOption['_last_version_scanned'] = $versionTo;
			$existingOption['_plan_up_to']           = $trm;

update_option( $optionKey, $existingOption );

return array(
				'status' => 'success',
				'log'    => $existingOption,
			);
		}

/**
		 * At this point status of the execution plan is not finished
		 * lets do the work
		 *
		 */
		$curExecMethod = '';
		$mtdStat       = '';

foreach ( $existingOption['_func'] as $mtd => $stat ) {

if ( $stat == self::STATUS_METHOD_EXECUTED ) {
				continue;
			}

$curExecMethod = $mtd;
			$mtdStat       = $stat;

break;
		}

if ( empty( $curExecMethod ) ) {

/**
			 * All methods has been executed
			 */

$log = $existingOption['_log'];

$log[] = 'All conversion method has been executed.';
			$log[] = 'Setting the migration plan as finished for version ' . $versionTo . ' at ' . gmdate( 'Y-m-d H:i:s' ) . '.';

$existingOption['_log']                  = $log;
			$existingOption['_status']               = self::STATUS_FINISHED;
			$existingOption['_last_version_scanned'] = $versionTo;
			$existingOption['_plan_up_to']           = $trm;

update_option( $optionKey, $existingOption );

return array(
				'status' => 'success',
				'log'    => $existingOption,
			);
		}

/**
		 * We have a conversion method to run whose status is not executed
		 *
		 */

if ( $mtdStat == self::STATUS_QUEUED ) {

$log = $existingOption['_log'];

$log[] = 'Conversion method ' . $curExecMethod . ' entered into queue at ' . gmdate( 'Y-m-d H:i:s' ) . '.';
			$log[] = '- Conversion method ' . $curExecMethod . ' has entered into execution phase at ' . gmdate( 'Y-m-d H:i:s' );

$fn = $existingOption['_func'];

$fn[ $curExecMethod ] = self::STATUS_METHOD_EXECUTING;

$existingOption['_func'] = $fn;
			$existingOption['_log']  = $log;

update_option( $optionKey, $existingOption );

return $this->$curExecMethod( $optionKey, $existingOption );
		}

if ( $mtdStat == self::STATUS_METHOD_EXECUTING ) {

return array(
				'status' => 'failed',
				'msg'    => 'Another person already initiated the execution.',
				'log'    => $existingOption['_log'],
			);
		}

if ( $mtdStat == self::STATUS_METHOD_PAUSED ) {

$log = $existingOption['_log'];

$log[] = '- Conversion method ' . $curExecMethod . ' has entered into executing phase at ' . gmdate( 'Y-m-d H:i:s' );

$fn = $existingOption['_func'];

$fn[ $curExecMethod ] = self::STATUS_METHOD_EXECUTING;

$existingOption['_func'] = $fn;
			$existingOption['_log']  = $log;

update_option( $optionKey, $existingOption );

return $this->$curExecMethod( $optionKey, $existingOption );
		}

/**
		 * This is the scenario that never ever should occur
		 */
		return array(
			'status' => 'failed',
			'msg'    => 'Overflow',
			'log'    => array(
				'Exiting...data is corrupted.',
			),
		);
	}

/**
	 *
	 * @param array $data
	 */
	public function output( array $data ) {

if ( ! empty( $data['option'] ) ) {

foreach ( $data['option'] as $opKey => $opVal ) {

update_option( $opKey, $opVal );
			}
		}
	}

/**
	 *
	 * @param $versionMap
	 * @param $frm
	 * @param $trm
	 *
	 * @return array
	 */
	private function getCallStacks( $versionMap, $frm, $trm ) {

$callStack         = array();
		$conversionMethods = array();
		$methods           = get_class_methods( $this );

foreach ( $methods as $method ) {

if ( substr( $method, 0, 13 ) === 'convert_from_' ) {

$conversionMethods[] = $method;

$tmp = str_replace( 'convert_from_', '', $method );
				$tmp = explode( '_to_', $tmp );

$vl = $this->makeFullVersionKey( $tmp[0] );
				$vh = $this->makeFullVersionKey( $tmp[1] );

$versionMap[ $vl ] = $tmp[0];
				$versionMap[ $vh ] = $tmp[1];
			}
		}

ksort( $versionMap );

foreach ( $versionMap as $k => $v ) {

if ( $k >= $frm && $k < $trm ) {

$fnc = '';

foreach ( $conversionMethods as $conversionMethod ) {

if ( strpos( $conversionMethod, 'convert_from_' . $v ) !== false ) {

$fnc = $conversionMethod;

break;
					}
				}

if ( ! empty( $fnc ) ) {
					$callStack[] = $fnc;
				}
			}
		}

return array(
			'map'   => $versionMap,
			'func'  => $conversionMethods,
			'stack' => $callStack,
		);
	}

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

$fr = explode( '_', $string );

$frm = array_map(
			function( $item ) {
				return str_pad( $item, 3, '0', STR_PAD_LEFT );
			},
			$fr
		);

return implode( '', $frm );
	}

/**
	 * @return string
	 */
	public function getNewTextDomain() {
		return $this->new_text_domain;
	}

/**
	 * @return string
	 */
	public function getTextDomain() {
		return $this->text_domain;
	}

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

}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	sedogerk/sedogerk	0755	2026-04-15 11:55:29
..	dir	-	sedogerk/sedogerk	0755	2026-04-15 11:55:29
data-migration.php	text/x-php	9.18 KB	sedogerk/sedogerk	0644	2023-11-28 05:47:40
initiator.php	text/x-php	1.78 KB	sedogerk/sedogerk	0644	2022-05-18 08:49:00
migration-contract.php	text/x-php	191 B	sedogerk/sedogerk	0644	2022-05-18 08:49:00
migration.php	text/x-php	125.44 KB	sedogerk/sedogerk	0644	2023-11-28 05:47:40

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