Fix version code issue.

plugins/src/main/kotlin/Versions.kt

@@ -17,6 +17,33 @@
 import org.gradle.api.JavaVersion
 import org.gradle.jvm.toolchain.JavaLanguageVersion
 
+/**
+ * Version codes are quite sensitive, because there is a mix between bundle and APKs, and we have to take into
+ * account the future upgrade of Element Android.
+ * Max versionCode allowed by the PlayStore (for information):
+ * 2_100_000_000
+ * Current version code of EAx on the PlayStore, for the first uploaded beta (we cannot go below):
+ * ----1_001_000
+ * Current version code of EAx on the nightly:
+ * ----1_001_000
+ * Current version of Element Android (at some point EAx will replace this app) (v1.6.3)
+ * ----40_106_03a where a stands for the architecture: 1, 2, 3, 4 and 0 for the universal APK
+ * Current version of EAx distributed with Firebase app distribution:
+ * ----1_002_000
+ * Latest version of EAx distributed with Firebase app distribution (downgrading, so that's a problem)
+ * -------10_200
+ * Version when running the current debug build
+ * -------10_200
+ *
+ * So adding 4_000_000 to the current version Code computed here should be fine, we will have:
+ * Release version:
+ * ---40_001_020
+ * Nightly version:
+ * ---40_001_020
+ * Debug version:
+ * ---40_010_200
+ */
+
 // Note: 2 digits max for each value
 private const val versionMajor = 0
 private const val versionMinor = 1
@@ -27,7 +54,7 @@ private const val versionMinor = 1
 private const val versionPatch = 2
 
 object Versions {
-    val versionCode = (versionMajor * 1_00_00 + versionMinor * 1_00 + versionPatch) * 10
+    val versionCode = 4_000_000 + versionMajor * 1_00_00 + versionMinor * 1_00 + versionPatch
     val versionName = "$versionMajor.$versionMinor.$versionPatch"
     const val compileSdk = 33
     const val targetSdk = 33