Etherpad app

src/freedombone-utils-nodejs

@@ -36,6 +36,10 @@ VARIANTS='mesh'
 NODEJS_VERSION='6.2.2'
 NODEJS_N_VERSION='2.1.4'
 
+# This file keeps track of the apps needing nodejs
+# so that it can be removed if tere are no apps which need it
+NODEJS_INSTALLED_APPS_FILE=$HOME/.nodejs-apps
+
 function mesh_install_nodejs {
     chroot "${rootdir}" apt-get -yq install nodejs
     chroot "${rootdir}" apt-get -yq install npm curl
@@ -65,6 +69,31 @@ EOF
     chroot "${rootdir}" rm -f /root/install-nodejs.sh
 }
 
+function remove_nodejs {
+    if [ ! $1 ]; then
+        return
+    fi
+    if [ ! -f $NODEJS_INSTALLED_APPS_FILE ]; then
+        return
+    fi
+    sed -i "/install_${1}/d" $NODEJS_INSTALLED_APPS_FILE
+    if ! grep "install_" $NODEJS_INSTALLED_APPS_FILE; then
+        apt-get -yq remove --purge nodejs
+
+        if [ -f /usr/bin/nodejs ]; then
+            rm /usr/bin/nodejs
+        fi
+        if [ -f /usr/local/bin/node ]; then
+            rm /usr/local/bin/node
+        fi
+        if [ -f /usr/bin/node ]; then
+            rm /usr/bin/node
+        fi
+
+        rm $NODEJS_INSTALLED_APPS_FILE
+    fi
+}
+
 function install_nodejs {
     if [ $INSTALLING_MESH ]; then
         mesh_install_nodejs
@@ -101,6 +130,12 @@ EOF
     fi
     rm -f /root/install-nodejs.sh
 
+    if [ $1 ]; then
+        if ! grep "install_${1}" $NODEJS_INSTALLED_APPS_FILE; then
+            echo "install_${1}" >> $NODEJS_INSTALLED_APPS_FILE
+        fi
+    fi
+
     mark_completed $FUNCNAME
 }