<?php

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/**

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* Class TweetRepository

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*

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* Aggregates Tweets stored in cache.

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*

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* @since 2.1

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*/

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namespace TwitterFeed\SmashTwitter;

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use TwitterFeed\CtfCache;

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use TwitterFeed\CTF_Feed;

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class TweetRepository

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{

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protected $types_and_terms;

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protected $cache_id;

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/**

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* @var TweetAggregator

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*/

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protected $tweet_aggregator;

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/**

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* @var CtfCache

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*/

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protected $feed_cache;

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/**

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* @var TweetSetModifier

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*/

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protected $tweet_set_modifier;

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protected $tweets;

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protected $header_data;

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/**

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* @var ErrorReport

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*/

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protected $error_report;

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public function __construct( $types_and_terms, $cache_id, TweetAggregator $tweet_aggregator, CtfCache $feed_cache, TweetSetModifier $tweet_set_modifier, ErrorReport $error_report)

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{

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$this->types_and_terms = $types_and_terms;

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$this->tweet_aggregator = $tweet_aggregator;

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$this->feed_cache = $feed_cache;

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$this->tweet_set_modifier = $tweet_set_modifier;

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$this->error_report = $error_report;

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$this->cache_id = $cache_id;

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}

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public function get_errors()

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{

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return $this->statuses['errors'];

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}

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public function set_errors( $errors_array )

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{

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$this->statuses['errors'] = $errors_array;

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}

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public function add_error( $message, $instructions )

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{

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$this->statuses['errors'][] = array(

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'message' => $message,

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'directions' => $instructions

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);

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}

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public function set_tweets($tweets)

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{

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$this->tweets = $tweets;

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}

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public function set_header_data($header_data)

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{

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$this->header_data = $header_data;

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}

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public function get_tweets()

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{

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return $this->tweets;

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}

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public function get_set_cache( $doing_cron_update = false )

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{

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$this->tweets = $this->feed_cache->get_transient( $this->cache_id );

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// Cache might come as empty or as an empty array string.

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if ( ! $this->tweets || $doing_cron_update ) {

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$this->tweets = $this->update_posts_cache();

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$endpoint = ! empty( $this->types_and_terms[0] ) ? $this->types_and_terms[0][0] : '';

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if ( $endpoint === 'usertimeline' && ! empty( $this->tweets[0]['user'] ) ) {

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$this->set_header_data( $this->tweets[0]['user'] );

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$this->update_header_cache();

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}

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} else {

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if ( ! is_array( $this->tweets ) ) {

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$this->tweets = json_decode( $this->tweets, true );

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}

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$header_data = $this->feed_cache->get_transient( $this->cache_id . '_header' );

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$this->set_header_data( $header_data );

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}

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$this->set_tweets($this->tweets);

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}

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public function paged_cache( $offset, $num ) {

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$this->tweets = false;

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$maybe_tweets = $this->feed_cache->get_transient( $this->cache_id );

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if ( $maybe_tweets ) {

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$tweets_array = json_decode( $maybe_tweets, true );

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} else {

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return false;

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}

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if ( ! empty( $tweets_array ) && is_array( $tweets_array ) ) {

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if ( $offset ) {

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$num_available = count( $tweets_array );

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if ( $offset >= $num_available) {

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return false;

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} else {

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if ( $num_available < $offset + $num ) {

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$length = $num_available - $offset < 0 ? 0 : $num_available - $offset;

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$this->tweets = array_slice( $tweets_array, $offset, $length );

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} else {

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$this->tweets = array_slice( $tweets_array, $offset );

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}

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}

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}

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}

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return true;

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}

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public function update_posts_cache()

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{

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foreach ( $this->types_and_terms as $type_and_term ) {

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$endpoint = $type_and_term[0];

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$term = $type_and_term[1];

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$remote_posts = $this->get_remote_posts( $endpoint, $term );

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if ( isset( $remote_posts[0]['id_str'] ) ) {

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$remote_posts = CTF_Feed::reduceTweetSetData( $remote_posts );

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$this->cache_single_posts_from_set($remote_posts, $endpoint, $term );

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}

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}

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$posts = $this->posts_from_db();

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$this->update_cache( $posts );

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return $posts;

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}

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public function posts_from_db() {

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$aggregator = new TweetAggregator();

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$posts = $aggregator->db_post_set( $this->types_and_terms );

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return $aggregator->normalize_db_post_set( $posts );

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}

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public function update_cache( $posts ) {

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$this->feed_cache->set_transient( $this->cache_id, json_encode( $posts ) );

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}

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public function update_header_cache()

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{

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$this->feed_cache->set_transient( $this->cache_id . '_header', json_encode( $this->header_data ), false, '' );

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}

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public function get_remote_posts( $endpoint, $term )

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{

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$ctf_options = get_option( 'ctf_options', array() );

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$site_access_token = ! empty( $ctf_options[ CTF_SITE_ACCESS_TOKEN_KEY ] ) ? $ctf_options[ CTF_SITE_ACCESS_TOKEN_KEY ] : false;

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if ( empty( $site_access_token ) ) {

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$this->error_report->process_error( 'could_not_authenticate', true );

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return array();

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}

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$request = new Request( $endpoint, $term, array(), $site_access_token );

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$response = $request->fetch();

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// Prevent showing fatal error if the site access token is invalid.

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if ( is_wp_error( $response ) ) {

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$this->error_report->process_error( $response, true );

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return [];

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}

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$error = $request->get_error();

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if ( ! empty( $error ) ) {

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$this->error_report->process_error( $error, true );

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}

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if ( ! empty( $response[0]['id_str'] ) ) {

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$this->tweet_set_modifier->set_tweet_set( $response );

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$this->tweet_set_modifier->hydrate_tweet_set();

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$response = $this->tweet_set_modifier->get_hydrated_tweet_set();

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}

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return $response;

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}

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public function cache_single_posts_from_set( $posts, $endpoint, $term )

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{

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foreach ( $posts as $single_tweet ) {

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$single_post_cache = new SinglePostCache( $single_tweet, $endpoint, $term );

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if ( ! $single_post_cache->db_record_exists() ) {

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$single_post_cache->store();

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} else {

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if ( ! $single_post_cache->db_record_exists_for_endpoint_and_term() ) {

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$single_post_cache->update_single( true );

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} else {

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$single_post_cache->update_single( false );

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}

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}

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}

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}

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public function get_post_set_page($page = 1)

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{

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$posts = $this->get_posts();

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$max = $this->settings['numPostDesktop'];

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if ($this->settings['numPostTablet'] > $this->settings['numPostDesktop']) {

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$max = $this->settings['numPostTablet'];

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}

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if ($this->settings['numPostMobile'] > $this->settings['numPostTablet']) {

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$max = $this->settings['numPostMobile'];

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}

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$offset = ($page - 1) * $max;

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return is_array( $posts ) ? array_slice($posts, $offset, $max) : [];

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}

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public function is_last_page($page)

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{

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$posts = $this->get_posts();

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$posts_per_page = $this->settings['numPostDesktop'];

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if ($this->settings['numPostTablet'] > $this->settings['numPostDesktop']) {

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$posts_per_page = $this->settings['numPostTablet'];

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}

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if ($this->settings['numPostMobile'] > $this->settings['numPostTablet']) {

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$posts_per_page = $this->settings['numPostMobile'];

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}

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return count($posts) <= ($page * (int) $posts_per_page);

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}

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}

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