show usage notes in dev builds too, but never send from them

gearslip/src/main/java/app/seb3thehacker/gearslip/stats/UsageStats.kt

@@ -51,15 +51,15 @@ object UsageStats {
     private fun prefs(context: Context) = context.getSharedPreferences(PREFS, Context.MODE_PRIVATE)
 
     /**
-     * Dev builds never send anything and never ask: no switch in Settings, no page in setup, so
-     * testing doesn't muddy the numbers. Only release builds offer the choice.
+     * Dev builds show every switch and screen, so they can be tested, but never send anything:
+     * testing mustn't muddy the numbers.
      */
-    val choosable: Boolean get() = !BuildConfig.DEBUG
+    val sends: Boolean get() = !BuildConfig.DEBUG && BuildConfig.STATS_URL.isNotBlank()
 
-    fun enabled(context: Context): Boolean = choosable && prefs(context).getBoolean(KEY_ENABLED, false)
+    fun enabled(context: Context): Boolean = prefs(context).getBoolean(KEY_ENABLED, false)
 
     /** Whether the driver has answered the question in setup, either way. */
-    fun asked(context: Context): Boolean = !choosable || prefs(context).getBoolean(KEY_ASKED, false)
+    fun asked(context: Context): Boolean = prefs(context).getBoolean(KEY_ASKED, false)
 
     fun choices(context: Context): Choices {
         val p = prefs(context)
@@ -98,7 +98,7 @@ object UsageStats {
      * a car recorded mid-send still goes out.
      */
     private fun sendSoon(context: Context) {
-        if (!enabled(context)) return
+        if (!sends || !enabled(context)) return
         if (!sending.compareAndSet(false, true)) { sendAgain = true; return }
         val app = context.applicationContext
         Thread({
@@ -192,9 +192,8 @@ object UsageStats {
 
     /** Sends the note now; false when it didn't get through. */
     private fun send(context: Context): Boolean {
-        if (!enabled(context)) return true
+        if (!sends || !enabled(context)) return true
         val endpoint = BuildConfig.STATS_URL
-        if (endpoint.isBlank()) return true
         val p = prefs(context)
         val note = synchronized(carsLock) { preview(context) }
         val sentCars = note.optJSONArray("cars")?.toString()

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/SettingsScreen.kt

@@ -55,7 +55,6 @@ import androidx.compose.ui.unit.dp
 import app.seb3thehacker.gearslip.AppSettings
 import app.seb3thehacker.gearslip.BuildConfig
 import app.seb3thehacker.gearslip.CertProvider
-import app.seb3thehacker.gearslip.stats.UsageStats
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -94,9 +93,7 @@ fun SettingsScreen(
             ConnectionSection()
             if (SHOW_RECOMMENDED_APPS) AppsSection(onOpenRecommendedApps)
             CertificateSection()
-            if (UsageStats.choosable) {
-                SettingsSection("Usage notes", header = USAGE_STATS_INTRO) { UsageStatsRows(showNote = true) }
-            }
+            SettingsSection("Usage notes", header = USAGE_STATS_INTRO) { UsageStatsRows(showNote = true) }
             Spacer(Modifier.height(16.dp))
         }
     }

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/SetupGuideScreen.kt

@@ -287,21 +287,18 @@ private fun pages(context: Context, onRequestCallScreening: () -> Unit): List<Gu
 
     // --- The very end, every time: usage notes. The first time through, leaving the page
     // without turning them on is a no; on a replay, the switch shows what was chosen before.
-    // Dev builds never send, so they skip the page.
-    if (UsageStats.choosable) {
-        add(
-            GuidePage(
-                title = USAGE_STATS_TITLE,
-                explanation = USAGE_STATS_INTRO,
-                content = {
-                    UsageStatsChoices()
-                    DisposableEffect(Unit) {
-                        onDispose { if (!UsageStats.asked(context)) UsageStats.set(context, false) }
-                    }
-                },
-            ),
-        )
-    }
+    add(
+        GuidePage(
+            title = USAGE_STATS_TITLE,
+            explanation = USAGE_STATS_INTRO,
+            content = {
+                UsageStatsChoices()
+                DisposableEffect(Unit) {
+                    onDispose { if (!UsageStats.asked(context)) UsageStats.set(context, false) }
+                }
+            },
+        ),
+    )
 }
 
 /**

gearslip/src/main/java/app/seb3thehacker/gearslip/ui/UsageStatsChoices.kt

@@ -84,7 +84,11 @@ internal fun ColumnScope.UsageStatsRows(showNote: Boolean) {
     SettingsRow(
         "Send usage notes",
         Modifier.toggleable(on, role = Role.Switch) { on = it; save() },
-        subtitle = if (BuildConfig.STATS_URL.isBlank()) "This build has no stats server, so it sends nothing" else null,
+        subtitle = when {
+            BuildConfig.DEBUG -> "Dev build: nothing is ever sent"
+            BuildConfig.STATS_URL.isBlank() -> "This build has no stats server, so it sends nothing"
+            else -> null
+        },
         icon = Icons.Filled.Send,
         trailing = { Switch(checked = on, onCheckedChange = null) },
     )
@@ -154,11 +158,10 @@ private fun Choice(label: String, checked: Boolean, onChange: (Boolean) -> Unit)
 
 /**
  * Asks once, for people who set Gearslip up before usage notes existed and so never saw the
- * setup page. Either answer is final; Settings changes it later. Release builds only.
+ * setup page. Either answer is final; Settings changes it later.
  */
 @Composable
 internal fun UsageStatsPrompt() {
-    if (!UsageStats.choosable) return
     val context = LocalContext.current
     var show by remember { mutableStateOf(!UsageStats.asked(context)) }
     if (!show) return