Refactor android-builder into command scripts

lib/commands/export.sh

@@ -0,0 +1,60 @@
+#!/data/data/com.termux/files/usr/bin/bash
+set -e
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+source "$ROOT_DIR/lib/common.sh"
+
+APK="$(get_apk_path)"
+BUILD_TYPE="$(get_build_type)"
+
+if [ ! -f "$APK" ]; then
+  echo "No $BUILD_TYPE APK found."
+  echo
+  echo "Run:"
+  echo "  android-builder build"
+  exit 1
+fi
+
+if [ ! -d "$HOME/storage" ]; then
+  echo "==> Termux storage has not been configured."
+  echo "==> Requesting storage permission..."
+  echo
+
+  termux-setup-storage
+
+  echo
+  echo "Please grant storage permission, then run:"
+  echo "  android-builder export"
+  exit 0
+fi
+
+EXPORT_DIR="$HOME/storage/documents"
+mkdir -p "$EXPORT_DIR"
+
+PROJECT_NAME="$(get_project_name)"
+DEST="$EXPORT_DIR/${PROJECT_NAME}.apk"
+
+echo "==> Exporting APK..."
+
+cp -f "$APK" "$DEST"
+sync
+
+SIZE="$(du -h "$DEST" | cut -f1)"
+
+echo
+echo "✓ Export complete!"
+echo
+echo "Project:"
+echo "  $PROJECT_NAME"
+echo
+echo "Build:"
+echo "  $BUILD_TYPE"
+echo
+echo "Size:"
+echo "  $SIZE"
+echo
+echo "Location:"
+echo "  $DEST"
+echo
+echo "Open your file manager, browse to Documents,"
+echo "then tap ${PROJECT_NAME}.apk to install or share it."