Add old > new version indicator

app/src/main/java/com/aurora/store/util/PackageUtil.kt

@@ -51,6 +51,19 @@ object PackageUtil {
         }
     }
 
+    fun getInstalledVersion(context: Context, packageName: String): String {
+        return try {
+            val packageInfo = getPackageInfo(context, packageName)
+            if (packageInfo != null) {
+                "${packageInfo.versionName}.${packageInfo.versionCode}"
+            } else {
+                ""
+            }
+        } catch (e: PackageManager.NameNotFoundException) {
+            ""
+        }
+    }
+
     fun isTv(context: Context): Boolean {
         val uiMode = context.resources.configuration.uiMode
         return uiMode and Configuration.UI_MODE_TYPE_MASK == Configuration.UI_MODE_TYPE_TELEVISION

app/src/main/java/com/aurora/store/view/ui/details/AppDetailsActivity.kt

@@ -490,12 +490,15 @@ class AppDetailsActivity : BaseDetailsActivity() {
                     app.versionCode.toLong()
                 )
 
+                val installedVersion = PackageUtil.getInstalledVersion(this, app.packageName)
+
                 if (isUpdatable) {
+                    B.layoutDetailsApp.txtLine3.text =
+                        ("$installedVersion > ${app.versionName}.${app.versionCode}")
                     btn.setText(R.string.action_update)
-                    btn.addOnClickListener {
+                    btn.addOnClickListener { startDownload() }
-                        startDownload()
-                    }
                 } else {
+                    B.layoutDetailsApp.txtLine3.text = installedVersion
                     btn.setText(R.string.action_open)
                     btn.addOnClickListener { openApp() }
                 }