feature: initial commit to add installer for Fluidd + rewrite nginx related stuff

scripts/install_fluidd.sh

@@ -0,0 +1,75 @@
+install_fluidd(){
+  if [ "$INST_FLUIDD" = "true" ]; then
+    unset SET_LISTEN_PORT
+    #check for other enabled web interfaces
+    detect_enabled_sites
+    #check if another site already listens to port 80
+    fluidd_port_check
+    #creating the fluidd nginx cfg
+    set_nginx_cfg "fluidd"
+    fluidd_setup && ok_msg "Fluidd installation complete!"; echo
+  fi
+}
+
+fluidd_port_check(){
+  if [ "$FLUIDD_ENABLED" = "false" ]; then
+    if [ "$SITE_ENABLED" = "true" ]; then
+      echo "Detected other enabled Interfaces:"
+      [ "$MAINSAIL_ENABLED" = "true" ] && echo "${cyan}● Mainsail - Port:$MAINSAIL_PORT${default}"
+      [ "$DWC2_ENABLED" = "true" ] && echo "${cyan}● DWC2 - Port:$DWC2_PORT${default}"
+      [ "$OCTOPRINT_ENABLED" = "true" ] && echo "${cyan}● OctoPrint - Port:$OCTOPRINT_PORT${default}"
+      if [ "$MAINSAIL_PORT" = "80" ] || [ "$DWC2_PORT" = "80" ] || [ "$OCTOPRINT_PORT" = "80" ]; then
+        PORT_80_BLOCKED="true"
+      fi
+      if [ "$PORT_80_BLOCKED" = "true" ]; then
+        [ "$MAINSAIL_PORT" = "80" ] && echo "${cyan}Mainsail${default} already listens on Port 80!"
+        [ "$DWC2_PORT" = "80" ] && echo "${cyan}DWC2${default} already listens on Port 80!"
+        [ "$OCTOPRINT_PORT" = "80" ] && echo "${cyan}OctoPrint${default} already listens on Port 80!"
+        echo "You need to choose a different Port for Fluidd than the above!"
+        select_fluidd_port
+      fi
+    else
+      DEFAULT_PORT=$(grep listen ${SRCDIR}/kiauh/resources/fluidd_nginx.cfg | head -1 | sed 's/^\s*//' | cut -d" " -f2 | cut -d";" -f1)
+      SET_LISTEN_PORT=$DEFAULT_PORT
+    fi
+    SET_NGINX_CFG="true"
+  else
+    SET_NGINX_CFG="false"
+  fi
+}
+
+select_fluidd_port(){
+  while true; do
+    read -p "${cyan}Please enter a new Port:${default} " NEW_PORT
+    if [ "$NEW_PORT" != "$MAINSAIL_PORT" ] && [ "$NEW_PORT" != "$DWC2_PORT" ] && [ "$NEW_PORT" != "$OCTOPRINT_PORT" ]; then
+      echo "Setting port $NEW_PORT for Mainsail!"
+      SET_LISTEN_PORT=$NEW_PORT
+      break
+    else
+      echo "That port is already taken! Select a different one!"
+    fi
+  done
+}
+
+get_fluidd_ver(){
+  FLUIDD_VERSION=$(curl -s https://api.github.com/repositories/295836951/tags | grep name | cut -d'"' -f4 | cut -d"v" -f2 | head -1)
+}
+
+fluidd_dl_url(){
+  get_fluidd_ver
+  FLUIDD_URL=https://github.com/cadriel/fluidd/releases/download/v$FLUIDD_VERSION/fluidd_v$FLUIDD_VERSION.zip
+}
+
+fluidd_setup(){
+  fluidd_dl_url
+  #clean up an existing fluidd folder
+  [ -d $FLUIDD_DIR ] && rm -rf $FLUIDD_DIR
+  #create fresh fluidd folder and download fluidd
+  mkdir $FLUIDD_DIR
+  cd $FLUIDD_DIR
+  status_msg "Downloading Fluidd $FLUIDD_VERSION ..."
+  wget -O fluidd.zip $FLUIDD_URL && status_msg "Extracting archive ..." && unzip -o fluidd.zip && rm fluidd.zip
+  ### write fluidd version to file for update check reasons
+  echo "$FLUIDD_VERSION" > $FLUIDD_DIR/version
+  echo
+}