build: Migrate to flat project structure

This change updates the project structure to become flattened.
Previously, the simulator, frontend and API each lived into their own
directory.

With this change, all modules of the project live in the top-level
directory of the repository. This should improve discoverability of
modules of the project.

1 files changed, 50 insertions, 0 deletions

diff --git a/opendc-web/opendc-web-ui/src/api/socket.js b/opendc-web/opendc-web-ui/src/api/socket.js
new file mode 100644
index 00000000..1c432167
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/api/socket.js
@@ -0,0 +1,50 @@
+import io from 'socket.io-client'
+import { getAuthToken } from '../auth/index'
+
+let socket
+let requestIdCounter = 0
+const callbacks = {}
+
+export function setupSocketConnection(onConnect) {
+    const apiUrl =
+        process.env.REACT_APP_API_BASE_URL ||
+        `${window.location.protocol}//${window.location.hostname}:${window.location.port}`
+
+    socket = io.connect(apiUrl)
+    socket.on('connect', onConnect)
+    socket.on('response', onSocketResponse)
+}
+
+export function sendSocketRequest(request, callback) {
+    if (!socket.connected) {
+        console.error('Attempted to send request over unconnected socket')
+        return
+    }
+
+    const newId = requestIdCounter++
+    callbacks[newId] = callback
+
+    request.id = newId
+    request.token = getAuthToken()
+
+    if (!request.isRootRoute) {
+        request.path = '/v2' + request.path
+    }
+
+    socket.emit('request', request)
+
+    if (process.env.NODE_ENV !== 'production') {
+        console.log('Sent socket request:', request)
+    }
+}
+
+function onSocketResponse(json) {
+    const response = JSON.parse(json)
+
+    if (process.env.NODE_ENV !== 'production') {
+        console.log('Received socket response:', response)
+    }
+
+    callbacks[response.id](response)
+    delete callbacks[response.id]
+}