fix(android): open GitHub issue form from Report bugs

mobile/src/main/java/net/activitywatch/android/MainActivity.kt

@@ -30,6 +30,8 @@ import net.activitywatch.android.databinding.ActivityMainBinding
 import net.activitywatch.android.fragments.TestFragment
 import net.activitywatch.android.fragments.WebUIFragment
 import net.activitywatch.android.watcher.UsageStatsWatcher
+import java.net.URLEncoder
+import java.nio.charset.StandardCharsets
 
 private const val TAG = "MainActivity"
 
@@ -53,6 +55,31 @@ internal fun initialWebUiUrl(
 internal fun shouldOpenActivityViewImmediately(openActivityView: Boolean, isResumed: Boolean): Boolean =
     openActivityView && isResumed
 
+internal const val BUG_REPORT_ISSUE_URL = "https://github.com/ActivityWatch/aw-android/issues/new"
+
+/** Prefilled GitHub issue URL for the drawer "Report bugs" item. */
+internal fun bugReportUrl(appVersion: String, androidVersion: String, apiLevel: Int): String {
+    val body = """
+        ## Description
+
+        Describe the problem here.
+
+        ## Steps to reproduce
+
+        1.
+
+        ## Expected behavior
+
+        Describe what you expected to happen.
+
+        ## Environment
+
+        - App version: $appVersion
+        - Android version: $androidVersion (API $apiLevel)
+    """.trimIndent()
+    return "$BUG_REPORT_ISSUE_URL?body=${URLEncoder.encode(body, StandardCharsets.UTF_8.name())}"
+}
+
 /** Native Home lives in MainActivity, so it inherits the last WebView chrome unless reset. */
 internal fun shouldResetChromeForNativeDestination(isWebUiDestination: Boolean): Boolean =
     !isWebUiDestination
@@ -104,6 +131,15 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
         }
     }
 
+    private fun openBugReport() {
+        val uri = Uri.parse(bugReportUrl(version, Build.VERSION.RELEASE, Build.VERSION.SDK_INT))
+        try {
+            startActivity(Intent(Intent.ACTION_VIEW, uri))
+        } catch (e: ActivityNotFoundException) {
+            Snackbar.make(binding.root, R.string.no_browser_found, Snackbar.LENGTH_SHORT).show()
+        }
+    }
+
     override fun onFragmentInteraction(item: Uri) {
         Log.w(TAG, "URI onInteraction listener not implemented")
     }
@@ -336,8 +372,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
                 openDashboardInBrowser()
             }
             R.id.nav_send -> {
-                Snackbar.make(binding.coordinatorLayout, "The send button was clicked, but it's not yet implemented!", Snackbar.LENGTH_LONG)
-                    .setAction("Action", null).show()
+                openBugReport()
             }
         }
 

mobile/src/test/java/net/activitywatch/android/MainActivityNavigationTest.kt

@@ -4,6 +4,8 @@ import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
 import org.junit.Assert.assertTrue
 import org.junit.Test
+import java.net.URLDecoder
+import java.nio.charset.StandardCharsets
 
 class MainActivityNavigationTest {
     @Test
@@ -113,4 +115,35 @@ class MainActivityNavigationTest {
             ),
         )
     }
+
+    @Test
+    fun bugReportUrl_pointsAtNewIssueFormWithSingleBodyParam() {
+        val url = bugReportUrl(appVersion = "0.12.3", androidVersion = "14", apiLevel = 34)
+
+        assertTrue(url.startsWith("$BUG_REPORT_ISSUE_URL?body="))
+        assertFalse(url.substringAfter("?body=").contains("&"))
+    }
+
+    @Test
+    fun bugReportUrl_bodyDecodesToOutlineWithEnvironmentDetails() {
+        val url = bugReportUrl(appVersion = "0.12.3", androidVersion = "14", apiLevel = 34)
+        val body = URLDecoder.decode(url.substringAfter("?body="), StandardCharsets.UTF_8.name())
+
+        assertTrue(body.startsWith("## Description\n"))
+        assertTrue(body.contains("## Steps to reproduce\n"))
+        assertTrue(body.contains("## Expected behavior\n"))
+        assertTrue(body.endsWith("## Environment\n\n- App version: 0.12.3\n- Android version: 14 (API 34)"))
+    }
+
+    @Test
+    fun bugReportUrl_encodesReservedCharactersInVersions() {
+        val url = bugReportUrl(appVersion = "1.0-rc&1 #2", androidVersion = "?", apiLevel = 1)
+        val encoded = url.substringAfter("?body=")
+        val body = URLDecoder.decode(encoded, StandardCharsets.UTF_8.name())
+
+        assertFalse(encoded.contains("&"))
+        assertFalse(encoded.contains("#"))
+        assertFalse(encoded.contains("?"))
+        assertTrue(body.contains("- App version: 1.0-rc&1 #2\n- Android version: ? (API 1)"))
+    }
 }