Fix bug where parent directory is omitted

.gitignore

@@ -3,3 +3,4 @@ php/psalm.xml
 php/vendor
 
 php.log
+config.json

config.default.json

@@ -0,0 +1,6 @@
+{
+	"ROOT_URL": "http://localhost/",
+	"ROOT_DIR": "/var/www/html/",
+	"IMG_DIR": "img/",
+	"THUMBNAIL_DIR": "thumbnails/"
+}

php/get.php

@@ -3,10 +3,11 @@ include_once __DIR__ . "/logging.php";
 include_once __DIR__ . "/cors.php";
 cors();
 
-define("ROOT_URL", "http://localhost/");
+$config_data = get_config();
-define("ROOT_DIR", "/var/www/localhost/");
+define("ROOT_URL", $config_data["ROOT_URL"]);
-define("IMG_DIR", "img/");
+define("ROOT_DIR", $config_data["ROOT_DIR"]);
-define("THUMBNAIL_DIR", "thumbnails/");
+define("IMG_DIR", $config_data["IMG_DIR"]);
+define("THUMBNAIL_DIR", $config_data["THUMBNAIL_DIR"]);
 define("THUMBNAIL_SCRIPT", __DIR__ . "/../scripts/resize-img");
 
 define("IMAGE_EXTENSIONS", [
@@ -37,6 +38,7 @@ function main(): void {
 	foreach (scandir($directory) as $file) {
 		if ($file === ".") continue;
 		if ($category === "" && $file === "..") continue;
+		if (substr($file, 0, 1) === "." && $file !== "..") continue;
 
 		$path = add_seperator_ab("/", $category, $file);
 		$is_dir = is_dir(ROOT_DIR.IMG_DIR.$path);
@@ -65,7 +67,8 @@ function create_thumbnail(string $category, string $file): string | null {
 
 	$path = add_seperator_ab("/", $category, $file);
 	$original_file = ROOT_DIR.IMG_DIR.$path;
-	$hash = hash_file("sha1", $original_file);
+	# use fast hashing algo, see: https://github.com/Cyan4973/xxHash
+	$hash = hash_file("xxh3", $original_file);
 
 	$thumbnail_directory = ROOT_DIR.THUMBNAIL_DIR;
 	$thumbnail_name = "$hash.jpg";
@@ -115,5 +118,40 @@ function is_image_file_type(string $filename): bool {
 	return false;
 }
 
+function get_config(): array {
+	$config_data = file_exists(__DIR__ . "/../config.json") ?
+		json_decode(file_get_contents(__DIR__ . "/../config.json"), true) : null;
+
+	if (!is_valid_config_data($config_data)) {
+		log_error("Config invalid, falling back to default. Please check config.json");
+
+		$config_data = json_decode(file_get_contents(__DIR__ . "/../config.default.json"), true);
+		if (!is_valid_config_data($config_data))
+			log_error("Default config invalid. Please check or create config.json");
+	}
+	return $config_data;
+}
+
+
+function is_valid_config_data(?array $data): bool {
+	if (!$data) return false;
+	$keys = ["ROOT_URL", "ROOT_DIR", "IMG_DIR", "THUMBNAIL_DIR"];
+	foreach ($keys as $key) {
+		if (!isset($data[$key])) return false;
+		switch ($key) {
+		case "ROOT_URL":
+		case "THUMBNAIL_DIR":
+			break;
+		case "ROOT_DIR":
+			if (!is_dir($data[$key])) return false;
+			break;
+		case "IMG_DIR":
+			if (!is_dir($data["ROOT_DIR"].$data[$key])) return false;
+			break;
+		}
+	}
+	return true;
+}
+
 main();
 ?>

scripts/resize-img

@@ -23,7 +23,7 @@ def main():
         exit(1)
 
     width, height = image.size
-    target_width = int(max(width/4, 1280))
+    target_width = int(max(width/2, 1280))
     new_height = int(target_width * height / width)
 
     image = image.resize((target_width, new_height), Image.Resampling.BICUBIC)