check if ios simulators are available

Reviewed By: lblasa

Differential Revision: D56937648

fbshipit-source-id: c7b6c38dd7e9a5546dc0271dcd0e8f1ee96921e6

desktop/doctor/src/index.tsx

@@ -255,6 +255,49 @@ export function getHealthchecks(): FlipperDoctor.Healthchecks {
                   };
                 },
               },
+              {
+                key: 'ios.has-simulators',
+                label: 'Simulators are available',
+                isRequired: true,
+                run: async (
+                  _e: FlipperDoctor.EnvironmentInfo,
+                  settings?: {enablePhysicalIOS: boolean; idbPath: string},
+                ): Promise<FlipperDoctor.HealthcheckRunResult> => {
+                  const result = await tryExecuteCommand(
+                    `${settings?.idbPath ?? 'idb'} list-targets --json`,
+                  );
+                  if (result.fail) {
+                    return {
+                      hasProblem: true,
+                      message: [
+                        'ios.has-simulators--idb-failed',
+                        {message: result.message},
+                      ],
+                    };
+                  }
+
+                  const devices = result.stdout
+                    .trim()
+                    .split('\n')
+                    .map((x) => JSON.parse(x))
+                    .filter((x) => x.type === 'simulator');
+
+                  if (devices.length === 0) {
+                    return {
+                      hasProblem: true,
+                      message: ['ios.has-simulators--no-devices'],
+                    };
+                  }
+
+                  return {
+                    hasProblem: false,
+                    message: [
+                      'ios.has-simulators--ok',
+                      {count: devices.length},
+                    ],
+                  };
+                },
+              },
               {
                 key: 'ios.xctrace',
                 label: 'xctrace exists',

desktop/flipper-common/src/doctor.tsx

@@ -182,6 +182,10 @@ export namespace FlipperDoctor {
     'ios.sdk--installed': [{platforms: string[]}];
     'ios.sdk--not_installed': [];
 
+    'ios.has-simulators--idb-failed': [{message: string}];
+    'ios.has-simulators--no-devices': [];
+    'ios.has-simulators--ok': [{count: number}];
+
     'ios.xctrace--installed': [{output: string}];
     'ios.xctrace--not_installed': [{message: string}];
 

desktop/flipper-ui/src/sandy-chrome/doctor/index.tsx

@@ -226,6 +226,28 @@ const IosSdkInstalled = (props: PropsFor<'ios.sdk--installed'>) => (
   </div>
 );
 
+const HasSimulatorsOk = (props: PropsFor<'ios.has-simulators--ok'>) => (
+  <Typography.Paragraph>
+    You have {props.count} simulators available.
+  </Typography.Paragraph>
+);
+const HasSimulatorsIdbFailed = (
+  props: PropsFor<'ios.has-simulators--idb-failed'>,
+) => (
+  <Typography.Paragraph>
+    Command to list devices failed, make sure idb is installed.
+    <CodeBlock>{props.message}</CodeBlock>
+  </Typography.Paragraph>
+);
+const HasSimulatorsNoDevices = (
+  _props: PropsFor<'ios.has-simulators--no-devices'>,
+) => (
+  <Typography.Paragraph>
+    No available simulators found. Launch XCode and install SDK for iOS or run{' '}
+    <CodeBlock>xcode-select --install</CodeBlock>
+  </Typography.Paragraph>
+);
+
 const IosXctraceInstalled = (props: PropsFor<'ios.xctrace--installed'>) => (
   <Typography.Paragraph>
     xctrace is installed.
@@ -319,6 +341,10 @@ const messageToComp: {
   'ios.sdk--installed': IosSdkInstalled,
   'ios.sdk--not_installed': IosSdkNotInstalled,
 
+  'ios.has-simulators--ok': HasSimulatorsOk,
+  'ios.has-simulators--no-devices': HasSimulatorsNoDevices,
+  'ios.has-simulators--idb-failed': HasSimulatorsIdbFailed,
+
   'ios.xctrace--installed': IosXctraceInstalled,
   'ios.xctrace--not_installed': IosXctraceNotInstalled,