<?php

require( dirname( __FILE__ ) . '/revisions-data.php' );

/**
 * Class which caches revisions from database table
 *
 * @package lp-update
 *
 */
class RevisionsCache {
	private $cache_table;
	
	/**
	 * Constructor of the class
	 *
	 * @return none
	 */
	public function RevisionsCache() {
        $this->__construct();
    }
    
    /**
	 * Constructor of the class
	 *
	 * @return none
	 */
    public function __construct() {
    	$this->init();
    }
	
	/**
	 * Function which initializes this class
	 *
	 * @return none
	 */
	public function init() {
		global $revisions_data;
		$this->cache_table = $revisions_data->get_all_last_revisions();
	}
	
	/**
	 * Function which updates some revision
	 *
	 * @param string $type plugin, theme or core
	 * @param string $slug plugin or theme slug
	 * @param string $name plugin or theme name
	 * @param string $textdomain plugin or theme textdomain
	 * @param string $version plugin, theme or core version
	 * @param string $locale locale of this translation
	 * @param int $revision revision of translation
	 * @param int $percent percent of translation
	 * @return bool success
	 */
	public function update_revision( $type, $slug, $name, $textdomain, $version, $locale, $revision, $percent ) {
		if ( 'core' == $type ) {
			if ( isset ( $this->cache_table[$type][$version][$locale]['revision'] ) ) {
				if ( $this->cache_table[$type][$version][$locale]['revision'] < $revision ) {
					$this->cache_table[$type][$version][$locale]['name'] = $name;
					$this->cache_table[$type][$version][$locale]['revision'] = $revision;
					$this->cache_table[$type][$version][$locale]['percent'] = $percent;
					return true;
				}
			} else
				return false;
		} else {
			if ( isset( $this->cache_table[$type][$slug][$version][$locale]['revision'] ) ) {
				if ( $this->cache_table[$type][$slug][$version][$locale]['revision'] < $revision ) {
					$this->cache_table[$type][$slug][$version][$locale]['name'] = $name;
					$this->cache_table[$type][$slug][$version][$locale]['textdomain'] = $textdomain;
					$this->cache_table[$type][$slug][$version][$locale]['revision'] = $revision;
					$this->cache_table[$type][$slug][$version][$locale]['percent'] = $percent;
					return true;
				}
			} else
				return false;
		}
		
		return false;
	}
	
	/**
	 * Function which inserts some revision
	 *
	 * @param string $type plugin, theme or core
	 * @param string $slug plugin or theme slug
	 * @param string $name plugin or theme name
	 * @param string $textdomain plugin or theme textdomain
	 * @param string $version plugin, theme or core version
	 * @param string $locale locale of this translation
	 * @param int $revision revision of translation
	 * @param int $percent percent of translation
	 * @return bool success
	 */
	public function insert_revision( $type, $slug, $name, $textdomain, $version, $locale, $revision, $percent ) {
		if ( 'core' == $type ) {
			if ( !isset( $this->cache_table[$type][$version][$locale]['revision'] ) ) {
				$this->cache_table[$type][$version][$locale]['name'] = $name;
				$this->cache_table[$type][$version][$locale]['revision'] = $revision;
				$this->cache_table[$type][$version][$locale]['percent'] = $percent;
				return true;
			}
		} else {
			if ( ! isset( $this->cache_table[$type][$slug][$version][$locale]['revision'] ) ) {
				$this->cache_table[$type][$slug][$version][$locale]['name'] = $name;
				$this->cache_table[$type][$slug][$version][$locale]['textdomain'] = $textdomain;
				$this->cache_table[$type][$slug][$version][$locale]['revision'] = $revision;
				$this->cache_table[$type][$slug][$version][$locale]['percent'] = $percent;
				return true;
			}
		}
		return true;
	}
	
	/**
	 * Function which returns some revision
	 *
	 * @param string $type plugin, theme or core
	 * @param string $slug plugin or theme slug
	 * @param string $version plugin, theme or core version
	 * @param string $locale locale of this translation
	 * @return bool success
	 */
	public function get_revision( $type, $slug, $version, $locale ) {
		$output['type'] = $type;
		$output['slug'] = $slug;
		$output['version'] = $version;
		$output['locale'] = $locale;
		if ( 'core' == $type ) {
			if ( isset( $this->cache_table[$type][$version][$locale]['revision'] ) ) {
				$output['revision'] = $this->cache_table[$type][$version][$locale]['revision'];
				$output['name'] = $this->cache_table[$type][$version][$locale]['name'];
				if ( isset( $this->cache_table[$type][$version][$locale]['percent'] ) ) {
					$output['percent'] = $this->cache_table[$type][$version][$locale]['percent'];
				}
				return $output;
			}
		} else {
			if ( isset( $this->cache_table[$type][$slug][$version][$locale]['revision'] ) ) {
				$output['revision'] = $this->cache_table[$type][$slug][$version][$locale]['revision'];
				$output['name'] = $this->cache_table[$type][$slug][$version][$locale]['name'];
				$output['textdomain'] = $this->cache_table[$type][$slug][$version][$locale]['textdomain'];
				if ( isset( $this->cache_table[$type][$slug][$version][$locale]['percent'] ) ) {
					$output['percent'] = $this->cache_table[$type][$slug][$version][$locale]['percent'];
				}
				return $output;
			}
		}
		
		return NULL;
	}
	
	/**
	 * Function which deletes some revision
	 *
	 * @param string $type plugin, theme or core
	 * @param string $slug plugin or theme slug
	 * @param string $version plugin, theme or core version
	 * @param string $locale locale of this translation
	 * @return bool success
	 */
	public function delete_revision( $type, $slug, $version, $locale ) {
		if ( 'core' == $type ) {
			if ( !isset( $this->cache_table[$type][$version][$locale]['revision'] ) ) {
				unset( $this->cache_table[$type][$version][$locale] );
				return true;
			}
		} else {
			if ( !isset( $this->cache_table[$type][$slug][$version][$locale]['revision'] ) ) {
				unset( $this->cache_table[$type][$slug][$version][$locale]['revision'] );
				return true;
			}
		}
		
		return false;
	}
}

?>