adjust scripts and readme

Author: piotr-iohk

README.md

@@ -60,10 +60,14 @@ If you have `bitkit-e2e-tests`, `bitkit-android`, and `bitkit-ios` checked out i
 ./scripts/build-ios-sim.sh
 ```
 
-Optional Android override to use network Electrum:
+Optional Android backend selection:
 
 ```bash
-E2E_BACKEND=network ./scripts/build-android-apk.sh
+# local Electrum (default)
+./scripts/build-android-apk.sh
+
+# regtest Electrum (network)
+BACKEND=regtest ./scripts/build-android-apk.sh
 ```
 
 ---

scripts/build-android-apk.sh

@@ -12,35 +12,50 @@
 # - Android SDK/NDK as required by the project, Gradle wrapper
 #
 # Usage:
-#   E2E_BACKEND=network ./scripts/build-android-apk.sh [API_LEVEL]
+#   ./scripts/build-android-apk.sh [API_LEVEL]
+#   BACKEND=regtest ./scripts/build-android-apk.sh [API_LEVEL]
 # Example:
 #   ./scripts/build-android-apk.sh 14
 set -euo pipefail
 
 E2E_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 ANDROID_ROOT="$(cd "$E2E_ROOT/../bitkit-android" && pwd)"
 
-E2E_BACKEND="${E2E_BACKEND:-local}"
+BACKEND="${BACKEND:-local}"
+E2E_BACKEND="local"
+GRADLE_TASK="assembleDevDebug"
+APK_FLAVOR_DIR="dev"
+APK_VARIANT="devDebug"
+
+if [[ "$BACKEND" == "regtest" ]]; then
+  E2E_BACKEND="network"
+elif [[ "$BACKEND" == "local" ]]; then
+  E2E_BACKEND="local"
+else
+  echo "ERROR: Unsupported BACKEND value: $BACKEND" >&2
+  exit 1
+fi
+echo "Building Android APK (BACKEND=$BACKEND, E2E_BACKEND=$E2E_BACKEND)..."
 
 pushd "$ANDROID_ROOT" >/dev/null
-E2E=true E2E_BACKEND="$E2E_BACKEND" ./gradlew assembleDevDebug --no-daemon --stacktrace
+E2E=true E2E_BACKEND="$E2E_BACKEND" ./gradlew "$GRADLE_TASK" --no-daemon --stacktrace
 popd >/dev/null
 
 # Determine APK path: prefer provided API level, else auto-detect, else fallback to 14
 API_LEVEL="${1:-}"
-APK_DIR="$ANDROID_ROOT/app/build/outputs/apk/dev/debug"
+APK_DIR="$ANDROID_ROOT/app/build/outputs/apk/$APK_FLAVOR_DIR/debug"
 
 if [[ -n "$API_LEVEL" ]]; then
-  APK_PATH="$APK_DIR/bitkit-android-$API_LEVEL-devDebug.apk"
+  APK_PATH="$APK_DIR/bitkit-android-$API_LEVEL-$APK_VARIANT.apk"
 else
   # Auto-detect from available artifacts
   # shellcheck disable=SC2012
-  DETECTED_APK="$(ls -t "$APK_DIR"/bitkit-android-*-devDebug.apk 2>/dev/null | head -n 1 || true)"
+  DETECTED_APK="$(ls -t "$APK_DIR"/bitkit-android-*-"$APK_VARIANT".apk 2>/dev/null | head -n 1 || true)"
   if [[ -n "$DETECTED_APK" ]]; then
     APK_PATH="$DETECTED_APK"
   else
     API_LEVEL="14"
-    APK_PATH="$APK_DIR/bitkit-android-$API_LEVEL-devDebug.apk"
+    APK_PATH="$APK_DIR/bitkit-android-$API_LEVEL-$APK_VARIANT.apk"
   fi
 fi
 
@@ -53,4 +68,3 @@ OUT="$E2E_ROOT/aut"
 mkdir -p "$OUT"
 cp -f "$APK_PATH" "$OUT/bitkit_e2e.apk"
 echo "Android APK copied to: $OUT/bitkit_e2e.apk (from $(basename "$APK_PATH"))"
-