Add info API endpoint.

It queries a project's `info` table.

lib/www/server/api/index.js

@@ -125,6 +125,10 @@ app.map({
 		get: [ mw.configuration.get ],
 // 		post: [ mw.label.post ],
 	},
+	'/project/:project/info/:path(*)': {
+		get: [ mw.info.get ],
+// 		post: [ mw.info.post ],
+	},
 //
 // 	'/project/:id/permissions/:mode(read|write)?': {
 // 		get: [ mw.permissions.get ],

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

@@ -8,5 +8,6 @@ module.exports = {
 	gis: require('./gis'),
 	label: require('./label'),
 	navdata: require('./navdata'),
-	configuration: require('./configuration')
+	configuration: require('./configuration'),
+	info: require('./info')
 };

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

@@ -0,0 +1,18 @@
+
+const { info } = require('../../../lib/db');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		res.status(200).json(await info.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/info/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/lib/db/index.js

@@ -7,5 +7,6 @@ module.exports = {
 	gis: require('./gis'),
 	label: require('./label'),
 	configuration: require('./configuration'),
+	info: require('./info'),
 	navdata: require('./navdata')
 };

lib/www/server/lib/db/info/get.js

@@ -0,0 +1,30 @@
+const { setSurvey } = require('../connection');
+
+async function get (projectId, path, opts = {}) {
+	const client = await setSurvey(projectId);
+	const [key, ...subkey] = path.split("/");
+
+	const text = `
+		SELECT value
+		FROM info
+		WHERE key = $1;
+	`;
+
+	console.log("k, sk", key, subkey);
+	const res = await client.query(text, [key]);
+	client.release();
+
+	const value = res.rows[0] && res.rows[0].value;
+
+	if (subkey.length) {
+		console.log("Reducing value");
+		const res = subkey.reduce( (obj, idx) => typeof obj != "undefined" ? obj[idx] : obj, value);
+		console.log(res);
+		return res;
+	} else {
+		console.log("Returning value");
+		return value;
+	}
+}
+
+module.exports = get;

lib/www/server/lib/db/info/index.js

@@ -0,0 +1,7 @@
+
+module.exports = {
+	get: require('./get'),
+	post: require('./post'),
+	put: require('./put'),
+	delete: require('./delete')
+}