Restructured src to use PSR-4 autoloading, moved many functions to functions.php

src/Storage/FilesystemJsonStorage.php

@@ -0,0 +1,68 @@
+<?php declare(strict_types=1);
+
+namespace Taproot\IndieAuth\Storage;
+
+use DirectoryIterator;
+
+class FilesystemJsonStorage implements TokenStorageInterface {
+	protected $path;
+	protected $ttl;
+
+	public function __construct(string $path, $ttl=0, $cleanUpNow=false) {
+		$this->path = rtrim($path, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
+		$this->ttl = $ttl;
+
+		if ($cleanUpNow) {
+			$this->cleanUp();
+		}
+	}
+
+	public function cleanUp($ttl=null): int {
+		$ttl = $ttl ?? $this->ttl;
+
+		$deleted = 0;
+
+		// A TTL of 0 means the token should live until deleted, and negative TTLs are invalid.
+		if ($ttl > 0) {
+			foreach (new DirectoryIterator($this->path) as $fileInfo) {
+				if ($fileInfo->isFile() && $fileInfo->getExtension() == 'json' && time() - max($fileInfo->getMTime(), $fileInfo->getCTime()) > $ttl) {
+					unlink($fileInfo->getPathname());
+					$deleted++;
+				}
+			}
+		}
+
+		return $deleted;
+	}
+
+	public function get(string $key): ?array {
+		$path = $this->getPath($key);
+		if (file_exists($path)) {
+			$result = json_decode(file_get_contents($path), true);
+
+			if (is_array($result)) {
+				return $result;
+			}
+		}
+
+		return null;
+	}
+
+	public function put(string $key, array $data): bool {
+		// Ensure that the containing folder exists.
+		mkdir($this->path, 0777, true);
+
+		return file_put_contents($this->getPath($key), json_encode($data)) !== false;
+	}
+
+	public function delete(string $key): bool {
+		if (file_exists($this->getPath($key))) {
+			return unlink($this->getPath($key));
+		}
+		return false;
+	}
+
+	public function getPath(string $key): string {
+		return $this->path . "$key.json";
+	}
+}