Improve release script

flutter/_utils/release.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+if [[ -d ".git" ]]; then
+
+    echo "Must be called in project root"
+    exit 1
+
+fi
+
+VERS="$(cat pubspec.yaml | grep -oP '(?<=version: ).*' | sed 's/[\s]*//' | tr -d '\n' | tr -d '')"
+
+VERS_BY_SPEC="$( echo -n "$VERS" | awk -F'+' '{print "v"$1}' )"
+VERS_BY_TAG="$(git describe --abbrev=0 --tags)"
+
+if [[ "$VERS_BY_TAG" != "$VERS_BY_SPEC" ]]; then 
+    echo "Version in pubspec.yaml ($VERS_BY_SPEC) does not match latest git tag ($VERS_BY_TAG)"
+    exit 1
+fi
+
+echo ""
+echo "(!) Make sure you've updated version-number in pubspec.yaml (current = ${VERS}) !"
+echo 'Confirmed' && read -r
+echo ""
+
+flutter build apk       --release
+cp build/app/outputs/flutter-apk/app-release.apk "_releases/v${VERS}.apk"
+
+echo ""
+echo "--> copied APK to _releases  ( Version: ${VERS} )"
+echo ""
+
+flutter build appbundle --release
+cp build/app/outputs/bundle/release/app-release.aab "_releases/v${VERS}.aab"
+cd "build/app/intermediates/merged_native_libs/release/out/lib" && zip -r "../../../../../../../_releases/v${VERS}.symbols.zip" .
+
+echo ""
+echo "--> copied AAB to _releases  ( Version: ${VERS} )"
+echo ""
+
+flutter build linux     --release
+tar -czf "_releases/v${VERS}.tar.gz" -C build/linux/x64/release/bundle .
+
+echo ""
+echo "--> copied linux-binary to _releases  ( Version: ${VERS} )"
+echo ""
+echo "#=> file://$(pwd)/_releases"
+echo ""
+echo "Done."