From 055bcc784446688d6d688a7619078562b5b9d4be Mon Sep 17 00:00:00 2001
From: Max <m.giller.dev@gmail.com>
Date: Sun, 28 Nov 2021 17:57:00 +0100
Subject: [PATCH] Implemented empty graph fallback
---
datasets/datasets.php | 20 ++++++++++++++++++++
datasets/default.json.hidden | 1 +
2 files changed, 21 insertions(+)
create mode 100644 datasets/default.json.hidden
diff --git a/datasets/datasets.php b/datasets/datasets.php
index 7532c04..ef40e24 100644
--- a/datasets/datasets.php
+++ b/datasets/datasets.php
@@ -1,9 +1,17 @@
<?php
+$EMPTY_SPACE_FILE = kg_get_space_file_path("default").".hidden";
+
add_action("wp_ajax_get_space", "kg_get_space"); // Fires only for logged-in-users
add_action("wp_ajax_nopriv_get_space", 'kg_get_space' ); // Fires for everyone
function kg_get_space() {
$file_path = kg_get_space_file_path($_POST["space"]);
+
+ // If it doesn't exist, create new empty space
+ if (!file_exists($file_path)) {
+ kg_create_empty_space($file_path);
+ }
+
$content = file_get_contents($file_path);
echo $content;
@@ -69,6 +77,18 @@ function kg_get_list_of_spaces() {
return $spaces;
}
+function kg_create_empty_space($file_path) {
+ // Don't do anything, if it exists
+ if (file_exists($file_path)) {
+ return;
+ }
+
+ // Read and copy default empty graph from default file
+ global $EMPTY_SPACE_FILE;
+ $empty_graph = file_get_contents($EMPTY_SPACE_FILE);
+ file_put_contents($file_path, $empty_graph);
+}
+
function endsWith( $haystack, $needle ) {
# Source: https://stackoverflow.com/a/834355/7376120
$length = strlen( $needle );
diff --git a/datasets/default.json.hidden b/datasets/default.json.hidden
new file mode 100644
index 0000000..0f81612
--- /dev/null
+++ b/datasets/default.json.hidden
@@ -0,0 +1 @@
+{"links":[],"nodes":[]}
\ No newline at end of file
--
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