Split DB Updates into seperate files, with the cutoff being 2.0.0

libs/stripe-php/lib/TelemetryId.php

@@ -0,0 +1,105 @@
+<?php
+
+namespace Stripe;
+
+class TelemetryId
+{
+    /** @var null|string */
+    private static $cachedId;
+
+    /** @var bool */
+    private static $loaded = false;
+
+    /**
+     * @return null|string
+     */
+    public static function get()
+    {
+        if (self::$loaded) {
+            return self::$cachedId;
+        }
+        self::$loaded = true;
+
+        $configDir = self::getConfigDir();
+        if (null === $configDir) {
+            return null;
+        }
+
+        $filePath = self::joinPath($configDir, 'telemetry_id');
+
+        if (\file_exists($filePath)) {
+            $content = @\file_get_contents($filePath);
+            if (false !== $content) {
+                $content = \trim($content);
+                if ('' !== $content) {
+                    self::$cachedId = $content;
+
+                    return self::$cachedId;
+                }
+            }
+        }
+
+        self::$cachedId = \bin2hex(\random_bytes(16));
+
+        if (!\is_dir($configDir)) {
+            if (!@\mkdir($configDir, 0700, true)) {
+                self::$cachedId = null;
+
+                return null;
+            }
+        }
+        if (false === @\file_put_contents($filePath, self::$cachedId)) {
+            self::$cachedId = null;
+
+            return null;
+        }
+
+        return self::$cachedId;
+    }
+
+    /**
+     * @return null|string
+     */
+    public static function getConfigDir()
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $appData = \getenv('APPDATA');
+            if (false === $appData || '' === $appData) {
+                return null;
+            }
+
+            return self::joinPath($appData, 'Stripe');
+        }
+
+        $xdg = \getenv('XDG_CONFIG_HOME');
+        if (false !== $xdg && '' !== $xdg) {
+            return self::joinPath($xdg, 'stripe');
+        }
+
+        $home = \getenv('HOME');
+        if (false === $home || '' === $home) {
+            return null;
+        }
+
+        return self::joinPath($home, '.config', 'stripe');
+    }
+
+    /**
+     * @param string ...$segments
+     *
+     * @return string
+     */
+    private static function joinPath(...$segments)
+    {
+        return \implode(\DIRECTORY_SEPARATOR, $segments);
+    }
+
+    /**
+     * @internal For testing only
+     */
+    public static function reset()
+    {
+        self::$cachedId = null;
+        self::$loaded = false;
+    }
+}