update install.sh to handle missing venv module

scripts/install.sh

@@ -14,6 +14,8 @@
 
 set -e
 what=$1
+on_ha=0
+[ -z "$what" ] && what="client"
 
 if [ -d /homeassistant ]; then
     echo "cannot install in HA, run \"docker exec -it homeassistant $0 $@\""
@@ -23,39 +25,62 @@ if [ -d /config ]; then
     echo "Installing on HA"
     where="/config/bin"
     venv="/config/venvs"
+    on_ha=1
 else
-    if [ ! -d ~/.local/bin ] && [ ! -d ~/bin ]; then
-        echo "No suitable bin directory found in PATH, please add either ~/.local/bin or ~/bin to your PATH"
+    if [ ! -d $HOME/.local/bin ] && [ ! -d $HOME/bin ]; then
+        echo "No suitable bin directory found in PATH, please add either $HOME/.local/bin or $HOME/bin to your PATH"
         exit 1
     fi
-    for where in ~/bin ~/.local/bin; do
+    for where in $HOME/bin $HOME/.local/bin notset ; do
         if echo ":$PATH:" | grep -q ":$where:" ; then
             break
         fi
     done
-    venv="~/venvs"
+    if [ "$where" = "notset" ]; then
+        echo "No suitable bin directory found in PATH, please add either $HOME/.local/bin or $HOME/bin to your PATH"
+        exit 1
+    fi
+    venv="$HOME/venvs"
 fi
 
-if [ "$what" = "server" ]; then
-    echo "Installing heartbeat server (hbd)"
-else
-    what="client"
-    echo "Installing heartbeat client (hbc)"
-fi
+echo "Installing heartbeat $what"
+
 if [ ! -d  $venv/hbd ]; then
+    python3 -m pip --version > /dev/null 2>&1 
+    if [ $? -ne 0 ]; then
+        # truenas does not have pip installed by default, so we need to fetch get-pip.py and install pip
+        echo "pip is not installed, fetching get-pip.py and installing pip"
+        arg="--without-pip"
+    fi
     mkdir -p $venv
-    python3 -m venv $venv/hbd --system-site-packages --without-pip
+    have_venv=$(python3 -c "import venv" &> /dev/null && echo "Installed" || echo "Not Installed")
+    if [ "$have_venv" = "Not Installed" ]; then
+        echo "python venv module not found, installing virtualenv"
+        python3 -m pip install --user virtualenv
+        python3 -m virtualenv $venv/hbd --system-site-packages $arg
+    else
+        python3 -m venv $venv/hbd --system-site-packages $arg
+    fi
     . $venv/hbd/bin/activate
-    curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && python3 get-pip.py
+    if [ -n "$arg" ]; then  
+        curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && python3 get-pip.py
+    fi
     deactivate
-#  python3 -m pip --version > /dev/null 2>&1 || { echo "pip is not installed, please install pip for python3"; exit 1; }
 fi
 . $venv/hbd/bin/activate
 pip install --upgrade --index-url https://git.wrede.ca/api/packages/andreas/pypi/simple/ --extra-index-url https://pypi.org/simple hbd[$what]
 if [ "$what" = "server" ]; then
-    rm -f ~$where/hbd
+    rm -f $where/hbd
     ln -sf $(which hbd) $where/hbd
+    echo "hbd installed, you can run it with \"$where/hbd\" or \"hbd\" if $where is in your PATH"
 else
     rm -f $where/hbc
     ln -sf $(which hbc) $where/hbc
+    if [ $on_ha -eq 1 ]; then
+        echo "restarting hbc "
+        job=$(grep run_hbc configuration.yaml | sed 's/run_hbc://')
+        $job
+    else
+        echo "hbc installed, you can run it with \"$where/hbc\" or \"hbc\" if $where is in your PATH"
+    fi  
 fi