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<?php
/**
 * Whats new page handler
 *
 * @package Tutor\User
 * @author Themeum <support@themeum.com>
 * @link https://themeum.com
 * @since 2.3.0
 */

namespace TUTOR;

/**
 * Class WhatsNew
 */
class WhatsNew {

/**
	 * What's new page.
	 *
	 * @since 2.2.4
	 *
	 * @return void
	 */
	public static function whats_new_menu() {
		$transient_key = 'tutor_plugin_info';
		$plugin_info   = get_transient( $transient_key );

if ( false === $plugin_info ) {
			$plugin_info     = tutils()->get_remote_plugin_info();
			$hour_in_seconds = 1800;
			set_transient( $transient_key, $plugin_info, $hour_in_seconds );
		}

$remote_version    = $plugin_info->version ?? TUTOR_VERSION;
		$installed_version = TUTOR_VERSION;
		$update_required   = version_compare( $remote_version, $installed_version, '>' );

$menu_text = __( "What's New", 'tutor' );
		if ( $update_required ) {
			$menu_text .= ' 1';
		}

add_submenu_page(
			'tutor',
			__( "What's New", 'tutor' ),
			$menu_text,
			'manage_options',
			'tutor-whats-new',
			function() use ( $remote_version, $installed_version, $update_required ) {
				$changelogs = self::build_changelog_array();
				include tutor()->path . 'views/pages/whats-new.php';
			}
		);
	}

/**
	 * Whats new item.
	 *
	 * @param string $type type of item.
	 * @param array $log changelog item.
	 *
	 * @return void
	 */
	public static function render_item( $type, $log ) {
		$obj = (object) $log;
		?>
		<li class="tutor-fs-7"><?php echo esc_html( $type ); ?>: <?php echo esc_html( $obj->title ); ?> 
		<?php
		if ( isset( $obj->is_pro ) && $obj->is_pro ) :
			?>
			Pro <?php endif; ?></li>
			<?php
	}

/**
	 * Build changelog array for whats new page.
	 *
	 * @return array
	 */
	private static function build_changelog_array() {
		$pro_regex    = '/$(Pro|pro)$\s*|\-\s*Pro|\-\s*pro$/';
		$new_regex    = '/^New:\s?/';
		$update_regex = '/^Update:\s?/';
		$fix_regex    = '/^Fix:\s?/';

$lines      = self::get_latest_changelog();
		$changelogs = array();

foreach ( $lines as $line ) {
			$line = trim( $line );
			$log  = array();

if ( preg_match( $new_regex, $line ) ) {
				$line = preg_replace( $new_regex, '', $line );
				if ( preg_match( $pro_regex, $line ) ) {
					$line          = preg_replace( $pro_regex, '', $line );
					$log['is_pro'] = true;
				}

$log['title']        = $line;
				$changelogs['new'][] = $log;
			}

if ( preg_match( $update_regex, $line ) ) {
				$line = preg_replace( $update_regex, '', $line );
				if ( preg_match( $pro_regex, $line ) ) {
					$line          = preg_replace( $pro_regex, '', $line );
					$log['is_pro'] = true;
				}

$log['title']           = $line;
				$changelogs['update'][] = $log;
			}

if ( preg_match( $fix_regex, $line ) ) {
				$line = preg_replace( $fix_regex, '', $line );
				if ( preg_match( $pro_regex, $line ) ) {
					$line          = preg_replace( $pro_regex, '', $line );
					$log['is_pro'] = true;
				}

$log['title']        = $line;
				$changelogs['fix'][] = $log;
			}
		}

return $changelogs;
	}
	/**
	 * Get latest changelog from readme.txt file.
	 *
	 * @return array
	 */
	public static function get_latest_changelog() {
		$lines             = array();
		$readme_content    = file_get_contents( __DIR__ . '/../readme.txt' );
		$changelog_pattern = '/== Changelog ==\s*(.*?)==/s';

// Perform the regex match to extract the changelog section.
		if ( preg_match( $changelog_pattern, $readme_content, $matches ) ) {
			$changelog_section = trim( $matches[1] );

// Split the changelog section into individual entries.
			$changelog_entries = explode( '= ', $changelog_section );

// Get the latest changelog entry.
			if ( ! empty( $changelog_entries[1] ) ) {
				$latest_changelog = $changelog_entries[1];
				$latest_changelog = preg_replace( '/(^\d+\.\d+\.\d+).*\s+/', ' ', $latest_changelog );
				$latest_changelog = trim( $latest_changelog );

$lines = explode( "\n", $latest_changelog );
				$lines = array_map( 'trim', $lines );
			}
		}

return $lines;
	}
}