Add diagnostics API endpoint.

Only available with write access and above.

Reports used and available filesystem sizes and database space
usage.

lib/www/server/api/middleware/admin/diagnostics/get.js

@@ -0,0 +1,17 @@
+
+const diagnostics = require('../../../../lib/diagnostics');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		const d = await diagnostics();
+		if (req.user?.role != "admin" && req.user?.role != "user") {
+		}
+		res.status(200).json(d);
+	} catch (err) {
+		next(err);
+		return;
+	}
+	next();
+
+};

lib/www/server/api/middleware/admin/diagnostics/index.js

@@ -0,0 +1,4 @@
+
+module.exports = {
+	get: require('./get')
+}

lib/www/server/api/middleware/admin/index.js

@@ -0,0 +1,3 @@
+module.exports = {
+	diagnostics: require('./diagnostics')
+};

lib/www/server/api/middleware/index.js

@@ -18,5 +18,6 @@ module.exports = {
 	openapi: require('./openapi'),
 	rss: require('./rss'),
 	etag: require('./etag'),
-	version: require('./version')
+	version: require('./version'),
+	admin: require('./admin')
 };