Add API endpoints for loading devices.

lib/roles/app.js

@@ -92,6 +92,36 @@ module.exports = function(options) {
     res.render('index')
   })
 
+  app.get('/api/v1/devices', function(req, res) {
+    dbapi.loadDevices()
+      .then(function(cursor) {
+        return Promise.promisify(cursor.toArray, cursor)()
+          .then(function(list) {
+            res.json(list)
+          })
+      })
+      .catch(function(err) {
+        log.error('Failed to load device list: ', err.stack)
+        res.send(500)
+      })
+  })
+
+  app.get('/api/v1/devices/:serial', function(req, res) {
+    dbapi.loadDevice(req.params.serial)
+      .then(function(device) {
+        if (device) {
+          res.json(device)
+        }
+        else {
+          res.send(404)
+        }
+      })
+      .catch(function(err) {
+        log.error('Failed to load device "%s": ', req.params.serial, err.stack)
+        res.send(500)
+      })
+  })
+
   io.set('authorization', (function() {
     var parse = Promise.promisify(express.cookieParser(options.secret))
     return function(handshake, accept) {