First database setup

knowledge-space-database.php

+<?php
+
+
+$SPACES_TABLE = get_table_name("spaces");
+$NODES_TABLE = get_table_name("nodes");
+$NODETYPES_TABLE = get_table_name("nodetypes");
+$LINKS_TABLE = get_table_name("links");
+$REFERENCES_TABLE = get_table_name("references");
+
+
+global $ks_db_version;
+$ks_db_version = '1.0';
+
+function get_table_name($table)
+{
+	global $wpdb;
+	return $wpdb->prefix . "ks_" . $table;
+}
+
+register_activation_hook(__FILE__, 'ks_install');
+function ks_install()
+{
+	global $wpdb;
+	global $ks_db_version;
+
+	$installed_ver = get_option("ks_db_version");
+	if ($installed_ver == $ks_db_version) {
+		return;
+	}
+
+	$charset_collate = $wpdb->get_charset_collate();
+	require_once(__DIR__ . '/../../../wp-admin/includes/upgrade.php');
+
+	global $SPACES_TABLE;
+	$sql = "CREATE TABLE $SPACES_TABLE (
+		space_id int(11) NOT NULL AUTO_INCREMENT,
+		name text NOT NULL,
+		description text NOT NULL,
+		PRIMARY KEY  (space_id)
+	) $charset_collate;";
+	dbDelta($sql);	//! Has some weird restrictions for the SQL Query: https://codex.wordpress.org/Creating_Tables_with_Plugins
+
+
+	global $NODETYPES_TABLE;
+	$sql = "CREATE TABLE $NODETYPES_TABLE (
+		nodetype_id int(11) NOT NULL AUTO_INCREMENT,
+		name text NOT NULL,
+		color bit(24) NOT NULL,
+		PRIMARY KEY  (nodetype_id)
+	) $charset_collate;";
+	dbDelta($sql);	//! Has some weird restrictions for the SQL Query: https://codex.wordpress.org/Creating_Tables_with_Plugins
+
+
+	global $NODES_TABLE;
+	$sql = "CREATE TABLE $NODES_TABLE (
+		node_id int(11) NOT NULL AUTO_INCREMENT,
+		title text NOT NULL,
+		description text NOT NULL,
+		icon_url text,
+		header_url text,
+		video_url text,
+		nodetype_id int(11) NOT NULL,
+		space_id int(11) NOT NULL,
+		PRIMARY KEY  (node_id)
+	) $charset_collate;";
+	dbDelta($sql);	//! Has some weird restrictions for the SQL Query: https://codex.wordpress.org/Creating_Tables_with_Plugins
+
+
+	global $LINKS_TABLE;
+	$sql = "CREATE TABLE $LINKS_TABLE (
+		link_id int(11) NOT NULL AUTO_INCREMENT,
+		source_node_id int(11) NOT NULL,
+		target_node_id int(11) NOT NULL,
+		PRIMARY KEY  (link_id)
+	) $charset_collate;";
+	dbDelta($sql);	//! Has some weird restrictions for the SQL Query: https://codex.wordpress.org/Creating_Tables_with_Plugins
+
+
+	global $REFERENCES_TABLE;
+	$sql = "CREATE TABLE $REFERENCES_TABLE (
+		reference_id int(11) NOT NULL AUTO_INCREMENT,
+		url text NOT NULL,
+		node_id int(11) NOT NULL,
+		PRIMARY KEY  (reference_id)
+	) $charset_collate;";
+	dbDelta($sql);	//! Has some weird restrictions for the SQL Query: https://codex.wordpress.org/Creating_Tables_with_Plugins
+
+	add_option('ks_db_version', $ks_db_version);
+}
+
+// Handling upgrade
+function ks_update_db_check()
+{
+	global $ks_db_version;
+	if (get_site_option('ks_db_version') != $ks_db_version) {
+		ks_install();
+	}
+}
+add_action('plugins_loaded', 'ks_update_db_check');

knowledge-space.php

@@ -123,6 +123,7 @@ function kg_editor_admin_add_page()
 }
 
 
+require_once(__DIR__ . "/knowledge-space-database.php");
 require_once(__DIR__ . '/datasets/datasets.php');
 
 //add_action('wp_enqueue_scripts', 'kg_load_css');