feat(ios): cache last used device

packages/cli-platform-ios/src/commands/runIOS/index.ts

@@ -19,6 +19,7 @@ import {
   getDefaultUserTerminal,
   startServerInNewWindow,
   findDevServerPort,
+  cacheManager,
 } from '@react-native-community/cli-tools';
 import {buildProject} from '../buildIOS/buildProject';
 import {BuildFlags, buildOptions} from '../buildIOS/buildOptions';
@@ -28,7 +29,7 @@ import listIOSDevices from '../../tools/listIOSDevices';
 import {promptForDeviceSelection} from '../../tools/prompts';
 import getSimulators from '../../tools/getSimulators';
 import {getXcodeProjectAndDir} from '../buildIOS/getXcodeProjectAndDir';
-import resolvePods from '../../tools/pods';
+import resolvePods, {getPackageJson} from '../../tools/pods';
 import getArchitecture from '../../tools/getArchitecture';
 import findXcodeProject from '../../config/findXcodeProject';
 
@@ -129,14 +130,34 @@ async function runIOS(_: Array<string>, ctx: Config, args: FlagsT) {
         } and "list-devices" parameters were passed to "run" command. We will list available devices and let you choose from one.`,
       );
     }
-    const selectedDevice = await promptForDeviceSelection(availableDevices);
+
+    const packageJson = getPackageJson(ctx.root);
+    const preferredDevice = cacheManager.get(
+      packageJson.name,
+      'lastUsedIOSDeviceId',
+    );
+
+    const selectedDevice = await promptForDeviceSelection(
+      availableDevices,
+      preferredDevice,
+    );
+
     if (!selectedDevice) {
       throw new CLIError(
         `Failed to select device, please try to run app without ${
           args.listDevices ? 'list-devices' : 'interactive'
         } command.`,
       );
+    } else {
+      if (selectedDevice.udid !== preferredDevice) {
+        cacheManager.set(
+          packageJson.name,
+          'lastUsedIOSDeviceId',
+          selectedDevice.udid,
+        );
+      }
     }
+
     if (selectedDevice.type === 'simulator') {
       return runOnSimulator(xcodeProject, mode, scheme, args, selectedDevice);
     } else {

packages/cli-platform-ios/src/tools/prompts.ts

@@ -35,14 +35,27 @@ export async function promptForConfigurationSelection(
 }
 
 export async function promptForDeviceSelection(
-  availableDevices: Device[],
+  devices: Device[],
+  lastUsedIOSDeviceId?: string,
 ): Promise<Device | undefined> {
+  const sortedDevices = [...devices];
+  const devicesIds = sortedDevices.map(({udid}) => udid);
+
+  if (lastUsedIOSDeviceId) {
+    const preferredDeviceIndex = devicesIds.indexOf(lastUsedIOSDeviceId);
+
+    if (preferredDeviceIndex > -1) {
+      const [preferredDevice] = sortedDevices.splice(preferredDeviceIndex, 1);
+      sortedDevices.unshift(preferredDevice);
+    }
+  }
+
   const {device} = await prompt({
     type: 'select',
     name: 'device',
     message: 'Select the device you want to use',
-    choices: availableDevices
-      .filter((d) => d.type === 'device' || d.type === 'simulator')
+    choices: sortedDevices
+      .filter(({type}) => type === 'device' || type === 'simulator')
       .map((d) => {
         const version = d.version
           ? ` (${d.version.match(/^(\d+\.\d+)/)?.[1]})`

packages/cli-tools/src/cacheManager.ts

@@ -5,7 +5,12 @@ import appDirs from 'appdirsjs';
 import chalk from 'chalk';
 import logger from './logger';
 
-type CacheKey = 'eTag' | 'lastChecked' | 'latestVersion' | 'dependencies';
+type CacheKey =
+  | 'eTag'
+  | 'lastChecked'
+  | 'latestVersion'
+  | 'dependencies'
+  | 'lastUsedIOSDeviceId';
 type Cache = {[key in CacheKey]?: string};
 
 function loadCache(name: string): Cache | undefined {