Add measure to track app launches from the Downloads folder

app/src/lib/stats/stats-database.ts

@@ -355,6 +355,12 @@ export interface IDailyMeasures {
 
   /** Number of times the user has encountered an unhandled rejection */
   readonly unhandledRejectionCount: number
+
+  /**
+   * Whether the app was launched from the Downloads folder or not. This is only
+   * relevant on macOS, null will be sent otherwise.
+   */
+  readonly launchedFromDownloadsFolder: boolean | null
 }
 
 export class StatsDatabase extends Dexie {

app/src/lib/stats/stats-store.ts

@@ -139,6 +139,7 @@ const DefaultDailyMeasures: IDailyMeasures = {
   diffOptionsViewedCount: 0,
   repositoryViewChangeCount: 0,
   unhandledRejectionCount: 0,
+  launchedFromDownloadsFolder: null,
 }
 
 interface IOnboardingStats {
@@ -1375,6 +1376,14 @@ export class StatsStore implements IStatsStore {
     }))
   }
 
+  public recordLaunchedFromDownloadsFolder(
+    launchedFromDownloadsFolder: boolean
+  ) {
+    return this.updateDailyMeasures(m => ({
+      launchedFromDownloadsFolder,
+    }))
+  }
+
   /** Post some data to our stats endpoint. */
   private post(body: object): Promise<Response> {
     const options: RequestInit = {

app/src/ui/app.tsx

@@ -295,6 +295,15 @@ export class App extends React.Component<IAppProps, IAppState> {
 
     log.info(`launching: ${getVersion()} (${getOS()})`)
     log.info(`execPath: '${process.execPath}'`)
+
+    const launchedFromDownloadsFolder = this.isLaunchedFromDownloadsFolder(
+      process.execPath
+    )
+    if (launchedFromDownloadsFolder !== null) {
+      this.props.dispatcher.recordLaunchedFromDownloadsFolder(
+        launchedFromDownloadsFolder
+      )
+    }
   }
 
   private onMenuEvent(name: MenuEvent): any {
@@ -2658,6 +2667,21 @@ export class App extends React.Component<IAppProps, IAppState> {
   private isTutorialPaused() {
     return this.state.currentOnboardingTutorialStep === TutorialStep.Paused
   }
+
+  /**
+   * Whether the app was launched from the Downloads folder or not. This is only
+   * relevant on macOS, null will be returned otherwise.
+   *
+   * @param execPath Path of the process executable.
+   */
+  private isLaunchedFromDownloadsFolder(execPath: string): boolean | null {
+    if (!__DARWIN__) {
+      return null
+    }
+
+    const downloadsPath = remote.app.getPath('downloads')
+    return execPath.startsWith(downloadsPath)
+  }
 }
 
 function NoRepositorySelected() {

app/src/ui/dispatcher/dispatcher.ts

@@ -2482,4 +2482,12 @@ export class Dispatcher {
   public recordDiffOptionsViewed() {
     return this.statsStore.recordDiffOptionsViewed()
   }
+
+  public recordLaunchedFromDownloadsFolder(
+    launchedFromDownloadsFolder: boolean
+  ) {
+    this.statsStore.recordLaunchedFromDownloadsFolder(
+      launchedFromDownloadsFolder
+    )
+  }
 }