Introduce shellcheck to CICD

.github/workflows/shellcheck.yml

@@ -0,0 +1,10 @@
+name: Linting
+on: [pull_request]
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master

scripts/all_in_one.sh

@@ -8,7 +8,7 @@ sudo apt-get update && sudo apt-get -y upgrade
 
 # Steps for git
 echo "~ Check if git is installed ~"
-git --version 2>&1 >/dev/null
+git --version >/dev/null 2>&1
 GIT_IS_AVAILABLE=$?
 if [ $GIT_IS_AVAILABLE -ne 0 ]; then
   echo "Git was not found, installing it ..."
@@ -24,7 +24,7 @@ sudo apt install python-is-python3
 # steps for python >= 3.9
 echo "~ Check that Python version is at least 3.9 ~"
 version=$(python -V 2>&1 | grep -Po '(?<=Python )(.+)')
-parsedVersion=$(echo "${version//./}")
+parsedVersion="${version//./}"
 echo "Detected version: $version"
 if [[ "$parsedVersion" -lt "390" ]]; then
   echo "Python must be at least 3.9. Please upgrade your Python or the system to use CocktailBerry."
@@ -39,22 +39,22 @@ fi
 
 # might also need to install python-venv
 echo "~ Check if python3-venv and ensurepip are available ~"
-python3 -m venv --help 2>&1 >/dev/null
+python3 -m venv --help >/dev/null 2>&1
 VENV_IS_AVAILABLE=$?
-python3 -c "import ensurepip" 2>&1 >/dev/null
+python3 -c "import ensurepip" >/dev/null 2>&1
 ENSUREPIP_IS_AVAILABLE=$?
 
 if [ $VENV_IS_AVAILABLE -ne 0 ] || [ $ENSUREPIP_IS_AVAILABLE -ne 0 ]; then
   echo "Python3 venv or ensurepip was not found, installing python3-venv ..."
   PYTHON_VERSION=$(python3 -V | cut -d' ' -f2 | cut -d'.' -f1,2) # Extracts version in format X.Y
-  sudo apt install python${PYTHON_VERSION}-venv
+  sudo apt install python"${PYTHON_VERSION}"-venv
 else
   echo "Python3 venv and ensurepip are already installed!"
 fi
 
 # also install pip if not already done
 echo "~ Check if pip is installed ~"
-pip --version 2>&1 >/dev/null
+pip --version >/dev/null 2>&1
 PIP_IS_AVAILABLE=$?
 if [ $PIP_IS_AVAILABLE -ne 0 ]; then
   echo "Pip was not found, installing it ..."
@@ -77,7 +77,7 @@ fi
 
 # ensure lxterminal is installed
 echo "~ Check if lxterminal is installed ~"
-lxterminal --version 2>&1 >/dev/null
+lxterminal --version >/dev/null 2>&1
 LXTERMINAL_IS_AVAILABLE=$?
 if [ $LXTERMINAL_IS_AVAILABLE -ne 0 ]; then
   echo "Lxterminal was not found, installing it ..."
@@ -89,17 +89,21 @@ fi
 # Now gets CocktailBerry source
 echo "~ Getting the CocktailBerry project from GitHub ... ~"
 echo "It will be located at ~/CocktailBerry"
+# shellcheck disable=SC2164
 cd ~
 git clone https://github.com/AndreWohnsland/CocktailBerry.git
+# shellcheck disable=SC2164
 cd ~/CocktailBerry
 
 # Do Docker related steps
 echo "~ Setting things up for Docker and Compose ~"
 bash scripts/install_docker.sh -n
+# shellcheck disable=SC2164
 cd ~/CocktailBerry
 bash scripts/install_compose.sh
 
 # Now we can finally set the program up ^-^
+# shellcheck disable=SC2164
 cd ~/CocktailBerry
 echo "~ Setting up and installing CocktailBerry ~"
 bash scripts/setup.sh

scripts/install_compose.sh

@@ -2,7 +2,7 @@
 
 echo "Installing Compose"
 DOCKER_CONFIG=${DOCKER_CONFIG:-$HOME/.docker}
-mkdir -p $DOCKER_CONFIG/cli-plugins
+mkdir -p "$DOCKER_CONFIG/cli-plugins"
 # in the future, sudo apt install docker-compose-plugin should work
 # sadly, this still does not work :(
 
@@ -11,6 +11,7 @@ mkdir -p $DOCKER_CONFIG/cli-plugins
 # This is used to have always the latest version and not a fixed one
 echo "Creating temporary virtual environment for lastversion"
 python -m venv --system-site-packages ~/.env-compose
+# shellcheck disable=SC1090
 source ~/.env-compose/bin/activate
 echo "Installing lastversion"
 pip install -q lastversion
@@ -19,15 +20,15 @@ pip install -q lastversion
 # COMPOSE_VERSION=$(lastversion docker/compose)
 # but its more robust to get the whole asset URL
 
-if [ $(getconf LONG_BIT) = "64" ]; then
+if [ "$(getconf LONG_BIT)" = "64" ]; then
   echo "Detected 64 bit system, using aarch64 compose image"
   DOWNLOAD_URL=$(lastversion --assets --filter '\-linux-aarch64(?!.sha256)' docker/compose)
 else
   echo "Detected 32 bit system, using armv7l compose image"
   DOWNLOAD_URL=$(lastversion --assets --filter '\-linux-armv7(?!.sha256)' docker/compose)
 fi
-curl -SL $DOWNLOAD_URL -o $DOCKER_CONFIG/cli-plugins/docker-compose
-chmod +x $DOCKER_CONFIG/cli-plugins/docker-compose
+curl -SL "$DOWNLOAD_URL" -o "$DOCKER_CONFIG/cli-plugins/docker-compose"
+chmod +x "$DOCKER_CONFIG/cli-plugins/docker-compose"
 docker compose version || echo "Compose installation failed :("
 
 # remove venv at the end

scripts/install_docker.sh

@@ -28,7 +28,7 @@ sudo apt-get update && sudo apt-get -y upgrade
 sudo apt install docker.io -y
 docker --version || echo "Docker installation failed :("
 echo "Adds current user to docker permissions"
-sudo usermod -aG docker $USER
+sudo usermod -aG docker "$USER"
 
 if ${RELOAD_GRP}; then
   newgrp docker

scripts/launcher.sh

@@ -12,5 +12,5 @@
 
 # launcher.sh for CocktailBerry
 export QT_SCALE_FACTOR=1
-cd ~/CocktailBerry/
+cd ~/CocktailBerry/ || echo "Did not find ~/CocktailBerry/" && exit
 python runme.py

scripts/setup.sh

@@ -47,18 +47,19 @@ echo "(Re-)Creating virtual environment for CocktailBerry, located at ~/.venv-co
 rm -rf ~/.env-cocktailberry
 python -m venv --system-site-packages ~/.env-cocktailberry
 echo "Activating virtual environment, this is needed since Raspbery Pi OS Bookworm"
+# shellcheck disable=SC1090
 source ~/.env-cocktailberry/bin/activate
 
-cd ~/CocktailBerry/
+cd ~/CocktailBerry/ || exit
 # Making neccecary steps for the according program
 if [ "$1" = "dashboard" ]; then
   echo "Setting up Dashboard"
-  cd dashboard/
+  cd dashboard/ || exit
   # Letting user choose the frontend type (WebApp or Qt)
   echo -n "Use new dashboard? This is strongly recommended! Oterwise will use old Qt App, but this will only work on a standalone device and has no remote access option (y/n) "
-  read answer
+  read -r answer
   echo -n "Enter your display language (en, de): "
-  read language
+  read -r language
   # new dashboard
   if echo "$answer" | grep -iq "^y"; then
     export UI_LANGUAGE=$language
@@ -67,19 +68,23 @@ if [ "$1" = "dashboard" ]; then
   # qt app
   else
     docker compose up --build -d || echo "ERROR: Could not install backend over docker-compose, is docker installed?"
-    echo "export UI_LANGUAGE=$language" >>~/launcher.sh
-    echo "source ~/.env-cocktailberry/bin/activate" >>~/launcher.sh
-    echo "cd ~/CocktailBerry/dashboard/qt-app/" >>~/launcher.sh
-    echo "python main.py" >>~/launcher.sh
-    cd qt-app/
+    {
+      echo "export UI_LANGUAGE=$language"
+      echo "source ~/.env-cocktailberry/bin/activate"
+      echo "cd ~/CocktailBerry/dashboard/qt-app/"
+      echo "python main.py"
+    } >>~/launcher.sh
+    cd qt-app/ || exit
     pip install -r requirements.txt
   fi
 else
   echo "Setting up CocktailBerry"
-  echo "source ~/.env-cocktailberry/bin/activate" >>~/launcher.sh
-  echo "export QT_SCALE_FACTOR=1" >>~/launcher.sh
-  echo "cd ~/CocktailBerry/" >>~/launcher.sh
-  echo "python runme.py" >>~/launcher.sh
+  {
+    echo "source ~/.env-cocktailberry/bin/activate"
+    echo "export QT_SCALE_FACTOR=1"
+    echo "cd ~/CocktailBerry/"
+    echo "python runme.py"
+  } >>~/launcher.sh
   echo "Installing PyQt"
   sudo apt-get -y install qt5-default pyqt5-dev pyqt5-dev-tools || sudo apt-get -y install python3-pyqt5 || echo "ERROR: Could not install PyQt5"
   echo "Installing needed Python libraries"