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wp-content/plugins/jetpack-boost/app/data-sync/class-performance-history-entry.php

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+<?php
+namespace Automattic\Jetpack_Boost\Data_Sync;
+
+use Automattic\Jetpack\Boost_Speed_Score\Speed_Score_Graph_History_Request;
+use Automattic\Jetpack\WP_JS_Data_Sync\Contracts\Entry_Can_Get;
+use Automattic\Jetpack\WP_JS_Data_Sync\Contracts\Entry_Can_Set;
+use Automattic\Jetpack\WP_JS_Data_Sync\Contracts\Lazy_Entry;
+
+class Performance_History_Entry implements Lazy_Entry, Entry_Can_Get, Entry_Can_Set {
+	private $start_date;
+	private $end_date;
+
+	public function __construct() {
+		// Default to the last 30 days
+		$this->start_date = ( time() - 60 * 60 * 24 * 30 ) * 1000;
+		$this->end_date   = time() * 1000;
+	}
+
+	public function get( $_fallback = false ) {
+		$request = new Speed_Score_Graph_History_Request( $this->start_date, $this->end_date, array() );
+		$result  = $request->execute();
+
+		if ( is_wp_error( $result ) || empty( $result['data'] ) ) {
+			return array(
+				'startDate'   => $this->start_date,
+				'endDate'     => $this->end_date,
+				'periods'     => array(),
+				'annotations' => array(),
+			);
+		}
+
+		$annotations = $result['data']['annotations'] ?? array();
+		// Sanitize the annotations
+		foreach ( $annotations as $key => $annotation ) {
+			$annotations[ $key ] = array(
+				'timestamp' => $annotation['timestamp'],
+				'text'      => wp_kses_post( $annotation['text'] ),
+			);
+		}
+
+		return array(
+			'startDate'   => $result['data']['_meta']['start'],
+			'endDate'     => $result['data']['_meta']['end'],
+			'periods'     => $result['data']['periods'],
+			'annotations' => $annotations,
+		);
+	}
+
+	public function set( $value ) {
+		$this->start_date = $value['startDate'];
+		$this->end_date   = $value['endDate'];
+	}
+}