Initial commit 🎉

fbshipit-source-id: b6fc29740c6875d2e78953b8a7123890a67930f2
Co-authored-by: Sebastian McKenzie <sebmck@fb.com>
Co-authored-by: John Knox <jknox@fb.com>
Co-authored-by: Emil Sjölander <emilsj@fb.com>
Co-authored-by: Pritesh Nandgaonkar <prit91@fb.com>

src/dispatcher/iOSDevice.js

@@ -0,0 +1,99 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+import type {ChildProcess} from 'child_process';
+import type {Store} from '../reducers/index.js';
+import child_process from 'child_process';
+import IOSDevice from '../devices/IOSDevice';
+
+type iOSSimulatorDevice = {|
+  state: 'Booted' | 'Shutdown' | 'Shutting Down',
+  availability: string,
+  name: string,
+  udid: string,
+|};
+
+type IOSDeviceMap = {[id: string]: Array<iOSSimulatorDevice>};
+
+// start port forwarding server for real device connections
+const portForwarder: ChildProcess = child_process.exec(
+  'PortForwardingMacApp.app/Contents/MacOS/PortForwardingMacApp -portForward=8088 -multiplexChannelPort=8078',
+);
+window.addEventListener('beforeunload', () => {
+  portForwarder.kill();
+});
+
+function querySimulatorDevices(): Promise<IOSDeviceMap> {
+  return new Promise((resolve, reject) => {
+    child_process.execFile(
+      'xcrun',
+      ['simctl', 'list', 'devices', '--json'],
+      {encoding: 'utf8'},
+      (err, stdout) => {
+        if (err) {
+          console.error('Failed to load iOS devices', err);
+          return resolve({});
+        }
+
+        try {
+          const {devices} = JSON.parse(stdout.toString());
+          resolve(devices);
+        } catch (err) {
+          console.error('Failed to parse iOS device list', err);
+          resolve({});
+        }
+      },
+    );
+  });
+}
+
+export default (store: Store) => {
+  // monitoring iOS devices only available on MacOS.
+  if (process.platform !== 'darwin') {
+    return;
+  }
+  setInterval(() => {
+    const {devices} = store.getState();
+    querySimulatorDevices().then((simulatorDevices: IOSDeviceMap) => {
+      const simulators: Array<iOSSimulatorDevice> = Object.values(
+        simulatorDevices,
+        // $FlowFixMe
+      ).reduce((acc, cv) => acc.concat(cv), []);
+
+      const currentDeviceIDs: Set<string> = new Set(
+        devices
+          .filter(device => device instanceof IOSDevice)
+          .map(device => device.serial),
+      );
+
+      const deviceIDsToRemove = new Set();
+      simulators.forEach((simulator: iOSSimulatorDevice) => {
+        const isRunning =
+          simulator.state === 'Booted' &&
+          simulator.availability === '(available)';
+
+        if (isRunning && !currentDeviceIDs.has(simulator.udid)) {
+          // create device
+          store.dispatch({
+            type: 'REGISTER_DEVICE',
+            payload: new IOSDevice(simulator.udid, 'emulator', simulator.name),
+          });
+        } else if (!isRunning && currentDeviceIDs.has(simulator.udid)) {
+          deviceIDsToRemove.add(simulator.udid);
+          // delete device
+        }
+      });
+
+      if (deviceIDsToRemove.size > 0) {
+        store.dispatch({
+          type: 'UNREGISTER_DEVICES',
+          payload: deviceIDsToRemove,
+        });
+      }
+    });
+  }, 3000);
+};