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web/core/modules/statistics/statistics.tokens.inc

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+<?php
+
+/**
+ * @file
+ * Builds placeholder replacement tokens for node visitor statistics.
+ */
+
+use Drupal\Core\Render\BubbleableMetadata;
+
+/**
+ * Implements hook_token_info().
+ */
+function statistics_token_info() {
+  $node['total-count'] = [
+    'name' => t("Number of views"),
+    'description' => t("The number of visitors who have read the node."),
+  ];
+  $node['day-count'] = [
+    'name' => t("Views today"),
+    'description' => t("The number of visitors who have read the node today."),
+  ];
+  $node['last-view'] = [
+    'name' => t("Last view"),
+    'description' => t("The date on which a visitor last read the node."),
+    'type' => 'date',
+  ];
+
+  return [
+    'tokens' => ['node' => $node],
+  ];
+}
+
+/**
+ * Implements hook_tokens().
+ */
+function statistics_tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
+  $token_service = \Drupal::token();
+
+  $replacements = [];
+
+  if ($type == 'node' & !empty($data['node'])) {
+    $node = $data['node'];
+    /** @var \Drupal\statistics\StatisticsStorageInterface $stats_storage */
+    $stats_storage = \Drupal::service('statistics.storage.node');
+    foreach ($tokens as $name => $original) {
+      if ($name == 'total-count') {
+        $replacements[$original] = $stats_storage->fetchView($node->id())->getTotalCount();
+      }
+      elseif ($name == 'day-count') {
+        $replacements[$original] = $stats_storage->fetchView($node->id())->getDayCount();
+      }
+      elseif ($name == 'last-view') {
+        $replacements[$original] = \Drupal::service('date.formatter')->format($stats_storage->fetchView($node->id())->getTimestamp());
+      }
+    }
+
+    if ($created_tokens = $token_service->findWithPrefix($tokens, 'last-view')) {
+      $replacements += $token_service->generate('date', $created_tokens, ['date' => $stats_storage->fetchView($node->id())->getTimestamp()], $options, $bubbleable_metadata);
+    }
+  }
+
+  return $replacements;
+}