Add endpoints for setting and retrieving metadata

lib/www/server/api/index.js

@@ -129,6 +129,19 @@ app.map({
 		get: [ mw.info.get ],
 // 		post: [ mw.info.post ],
 	},
+	'/project/:project/meta/': {
+		put: [ mw.meta.put ],
+	},
+	'/project/:project/meta/:path(*)': {
+		// Path examples:
+		// GET:
+		// `/raw/sequences/qc/missing_shots`,
+		// `/final/points/qc/sync_warn/results
+		get: [ mw.meta.get ],
+// 		// PUT:
+// 		// `/raw/qc/missing_shots` ← { sequence: …, value: … }
+// 		put: [ mw.meta.put ]
+	},
 //
 // 	'/project/:id/permissions/:mode(read|write)?': {
 // 		get: [ mw.permissions.get ],

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

@@ -9,5 +9,6 @@ module.exports = {
 	label: require('./label'),
 	navdata: require('./navdata'),
 	configuration: require('./configuration'),
-	info: require('./info')
+	info: require('./info'),
+	meta: require('./meta')
 };

lib/www/server/api/middleware/meta/get.js

@@ -0,0 +1,18 @@
+
+const { meta } = require('../../../lib/db');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		res.status(200).json(await meta.get(req.params.project, req.params.path, req.query));
+	} catch (err) {
+		if (err instanceof TypeError) {
+			res.status(404).json(null);
+		} else {
+			next(err);
+			return;
+		}
+	}
+	next();
+
+};

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

@@ -0,0 +1,8 @@
+
+module.exports = {
+	list: require('./list'),
+	get: require('./get'),
+	post: require('./post'),
+	put: require('./put'),
+	delete: require('./delete')
+}

lib/www/server/api/middleware/meta/put.js

@@ -0,0 +1,16 @@
+
+const { meta } = require('../../../lib/db');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		const payload = req.body;
+
+		await meta.put(req.params.project, payload);
+		res.status(201).send();
+		next();
+	} catch (err) {
+		next(err);
+	}
+
+};