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/");
-define("ROOT_DIR", "/var/www/localhost/");
-define("IMG_DIR", "img/");
-define("THUMBNAIL_DIR", "thumbnails/");
+$config_data = get_config();
+define("ROOT_URL", $config_data["ROOT_URL"]);
+define("ROOT_DIR", $config_data["ROOT_DIR"]);
+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);
@@ -65,11 +67,15 @@ function create_thumbnail(string $category, string $file): string | null {
 
 	$path = add_seperator_ab("/", $category, $file);
 	$original_file = ROOT_DIR.IMG_DIR.$path;
-	$thumbnail_directory = ROOT_DIR.THUMBNAIL_DIR.IMG_DIR.add_seperator_ab("/", $category, "");
-	$thumbnail_file = $thumbnail_directory.$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";
+	$thumbnail_file = $thumbnail_directory.$thumbnail_name;
 
 	if (file_exists($thumbnail_file)) {
-		log_print("$thumbnail_file exists, skipping generation");
+		log_print("thumbnail for $original_file exists, skipping generation");
 		goto return_thumbnail;
 	}
 
@@ -80,16 +86,17 @@ function create_thumbnail(string $category, string $file): string | null {
 		log_error($e->getMessage());
 	}
 
-	log_print(THUMBNAIL_SCRIPT." '$original_file' '$thumbnail_file'");
+	log_print("generating thumbnail for $original_file");
 	$output = shell_exec(THUMBNAIL_SCRIPT." '$original_file' '$thumbnail_file' 2>&1");
-	log_print($output);
-	if ($output === false) {
+	if ($output) log_print($output);
+	if (substr_count(strtolower((string) $output), "error")) {
 		log_error("Thumbnail failed");
+		log_print(ROOT_URL.IMG_DIR.$path);
 		return ROOT_URL.IMG_DIR.$path;
 	}
 
 	return_thumbnail:
-	return ROOT_URL.THUMBNAIL_DIR.IMG_DIR.$path;
+	return ROOT_URL.THUMBNAIL_DIR.$thumbnail_name;
 }
 
 function add_seperator_ab(string $separator, string $a, string $b): string {
@@ -111,5 +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

@@ -4,15 +4,12 @@ import sys
 
 
 def main():
-    target_width = 2048
-
     argn = len(sys.argv)
-
     if argn == 1:
-        print("You must specify an input file")
+        print_error("You must specify an input file")
         exit(1)
     elif argn == 2:
-        print("You must specify an output file")
+        print_error("You must specify an output file")
         exit(1)
 
     input_image_path = sys.argv[1]
@@ -21,10 +18,12 @@ def main():
     try:
         image = Image.open(input_image_path)
     except IOError:
-        print(f"Cannot open image file {input_image_path}")
+        print_error(f"Cannot open image file {input_image_path}")
+        image.close()
         exit(1)
 
     width, height = image.size
+    target_width = int(max(width/2, 1280))
     new_height = int(target_width * height / width)
 
     image = image.resize((target_width, new_height), Image.Resampling.BICUBIC)
@@ -37,10 +36,15 @@ def main():
     try:
         image.save(output_image_path, **kwargs)
     except IOError:
-        print(f"Cannot save file {output_image_path}")
+        print_error(f"Cannot save file {output_image_path}")
+        image.close()
         exit(1)
 
 
+def print_error(string):
+    print(f"resize-img Error: {string}")
+
+
 def rotate_image(image):
     exif = image.getexif()
     if exif is None: