Minimise string duplication & other minor changes

Instead of duplicating output strings, rewrite core/web/ftlOutput() into one neat versionOutput().

advanced/Scripts/version.sh

@@ -10,10 +10,16 @@
 
 # Variables
 DEFAULT="-1"
-PHGITDIR="/etc/.pihole/"
+COREGITDIR="/etc/.pihole/"
 WEBGITDIR="/var/www/html/admin/"
 
 getLocalVersion() {
+  # FTL requires a different method
+  if [ "$1" == "FTL" ]; then
+    echo $(pihole-FTL version)
+    return 0
+  fi
+
   # Get the tagged version of the local repository
   local directory="${1}"
   local version
@@ -33,6 +39,12 @@ getLocalVersion() {
 }
 
 getLocalHash() {
+  # FTL hash is not applicable
+  if [ "$1" == "FTL" ]; then
+    echo "N/A"
+    return 0
+  fi
+  
   # Get the short hash of the local repository
   local directory="${1}"
   local hash
@@ -66,88 +78,41 @@ getRemoteVersion(){
   return 0
 }
 
-coreOutput() {
-  [ "$1" = "-c" -o "$1" = "--current" -o -z "$1" ] && current="$(getLocalVersion ${PHGITDIR})"
-  [ "$1" = "-l" -o "$1" = "--latest" -o -z "$1" ] && latest="$(getRemoteVersion pi-hole)"
-  [ "$1" = "-h" -o "$1" = "--hash" ] && hash="$(getLocalHash ${PHGITDIR})"
-  [ -n "$2" ] && error="true"
-
-  if [ -n "$current" -a -n "$latest" ]; then
-    str="Pi-hole version is $current (Latest: $latest)"
-  elif [ -n "$current" -a -z "$latest" ]; then
-    str="Current Pi-hole version is $current"
-  elif [ -z "$current" -a -n "$latest" ]; then
-    str="Latest Pi-hole version is $latest"
-  elif [ -n "$hash" ]; then
-    str="Current Pi-hole hash is $hash"
-  else
-    error="true"
-  fi
-
-  if [ "$error" = "true" ]; then
-    echo "  Invalid Option! Try 'pihole -v --help' for more information."
-    exit 1
-  fi
-
-  echo "  $str"
-}
-
-webOutput() {
-  [ "$1" = "-c" -o "$1" = "--current" -o -z "$1" ] && current="$(getLocalVersion ${WEBGITDIR})"
-  [ "$1" = "-l" -o "$1" = "--latest" -o -z "$1" ] && latest="$(getRemoteVersion AdminLTE)"
-  [ "$1" = "-h" -o "$1" = "--hash" ] && hash="$(getLocalHash ${WEBGITDIR})"
-  [ ! -d "${WEBGITDIR}" ] && str="Web interface not installed!"
-  [ -n "$2" ] && error="true"
-
+versionOutput() {
+  [ "$1" == "pi-hole" ] && GITDIR=${COREGITDIR}
+  [ "$1" == "AdminLTE" ] && GITDIR=${WEBGITDIR}
+  [ "$1" == "FTL" ] && GITDIR="FTL"
   
+  [ "$2" == "-c" -o "$2" == "--current" -o -z "$2" ] && current=$(getLocalVersion $GITDIR)
+  [ "$2" == "-l" -o "$2" == "--latest" -o -z "$2" ] && latest=$(getRemoteVersion $1)
+  [ "$2" == "-h" -o "$2" == "--hash" ] && hash=$(getLocalHash $GITDIR)
+
   if [ -n "$current" -a -n "$latest" ]; then
-    str="Admin Console version is $current (Latest: $latest)"
+    output="${1^} version is $current (Latest: $latest)"
   elif [ -n "$current" -a -z "$latest" ]; then
-    str="Current Admin Console version is $current"
+    output="Current ${1^} version is $current"
   elif [ -z "$current" -a -n "$latest" ]; then
-    str="Latest Admin Console version is $latest"
+    output="Latest ${1^} version is $latest"
+  elif [ "$hash" == "N/A" ]; then
+    output=""
   elif [ -n "$hash" ]; then
-    str="Current Admin Console hash is $hash"
+    output="Current ${1^} hash is $hash"
   else
-    error="true"
+	  errorOutput
   fi
 
-  if [ "$error" = "true" ]; then
-    echo "  Invalid Option! Try 'pihole -v --help' for more information."
-    exit 1
-  fi
-
-  echo "  $str"
+  [ -n "$output" ] && echo "  $output"
 }
 
-ftlOutput() {
-  [ "$1" = "-c" -o "$1" = "--current" -o -z "$1" ] && current="$(pihole-FTL version)"
-  [ "$1" = "-l" -o "$1" = "--latest" -o -z "$1" ] && latest="$(getRemoteVersion FTL)"
-  [ ! -d "${WEBGITDIR}" ] && exit 0
-  [ -n "$2" ] && error="true"
-
-  if [ -n "$current" -a -n "$latest" ]; then
-    str="FTL version is $current (Latest: $latest)"
-  elif [ -n "$current" -a -z "$latest" ]; then
-    str="Current FTL version is $current"
-  elif [ -z "$current" -a -n "$latest" ]; then
-    str="Latest FTL version is $latest"
-  else
-    error="true"
-  fi
-
-  if [ "$error" = "true" ]; then
-    echo "  Invalid Option! Try 'pihole -v --help' for more information."
-    exit 1
-  fi
-
-  echo "  $str"
+errorOutput() {
+  echo "  Invalid Option! Try 'pihole -v --help' for more information."
+  exit 1
 }
   
 defaultOutput() {
-  coreOutput "$1" "$2"
-  webOutput "$1" "$2"
-  ftlOutput "$1" "$2"
+  versionOutput "pi-hole" "$@"
+  versionOutput "AdminLTE" "$@"
+  versionOutput "FTL" "$@"
 }
 
 helpFunc() {
@@ -155,23 +120,23 @@ helpFunc() {
 Show Pi-hole, Web Admin & FTL versions
 
 Repositories:
-  -a, --admin          Show both current and latest versions of Web Admin
-  -f, --ftl            Show both current and latest versions of FTL
-  -p, --pihole         Show both current and latest versions of Pi-hole Core
+  -p, --pihole         Only retrieve info regarding Pi-hole repository
+  -a, --admin          Only retrieve info regarding AdminLTE repository
+  -f, --ftl            Only retrieve info regarding FTL repository
   
 Options:
-  -c, --current        (Only after -a | -p | -f) Return the current version
-  -l, --latest         (Only after -a | -p | -f) Return the latest version
-  -h, --hash           (Only after -a | -p) Return the current Github hash
+  -c, --current        Return the current version
+  -l, --latest         Return the latest version
+  -h, --hash           Return the Github hash from your local repositories
   --help               Show this help dialog
 "
 	exit 0
 }
 
 case "${1}" in
-  "-a" | "--admin"     ) shift; webOutput "$@";;
-  "-p" | "--pihole"    ) shift; coreOutput "$@";;
-  "-f" | "--ftl"       ) shift; ftlOutput "$@";;
+  "-p" | "--pihole"    ) shift; versionOutput "pi-hole" "$@";;
+  "-a" | "--admin"     ) shift; versionOutput "AdminLTE" "$@";;
+  "-f" | "--ftl"       ) shift; versionOutput "FTL" "$@";;
   "--help"             ) helpFunc;;
   *                    ) defaultOutput "$@";;
 esac