complete overhaul of version script. Now with optional arguments!

advanced/Scripts/version.sh

@@ -10,26 +10,93 @@
 # the Free Software Foundation, either version 2 of the License, or
 # (at your option) any later version.
 
+# Flags:
+latest=false
+current=false
 
+normalOutput(){
+    piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
+    webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
 
+    piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+    webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
 
-normalOutput(){
-piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
-webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
+    echo "::: Pi-hole version is $piholeVersion (Latest version is $piholeVersionLatest)"
+    echo "::: Web-Admin version is $webVersion (Latest version is $webVersionLatest)"
+}
+
+webOutput(){
+    for var in "$@"
+    do
+      case "$var" in
+        "-l" | "--latest"    ) latest=true;;
+        "-c" | "--current"   ) current=true;;
+        *                    ) echo "::: Invalid Option!"; exit 1;
+      esac
+    done
 
-piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
-webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+   if [[ "${latest}" == true && "${current}" == false ]]; then
+        webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+        echo ${webVersionLatest}
+    elif [[ "${latest}" == false && "${current}" == true ]]; then
+        webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
+        echo ${webVersion}
+    else
+        webVersion=$(cd /var/www/html/admin/ && git describe --tags --abbrev=0)
+        webVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/AdminLTE/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+    fi
+}
+
+coreOutput(){
+ for var in "$@"
+    do
+      case "$var" in
+        "-l" | "--latest"    ) latest=true;;
+        "-c" | "--current"   ) current=true;;
+        *                    ) echo "::: Invalid Option!"; exit 1;
+      esac
+    done
 
-echo "::: Pi-hole version is $piholeVersion (Latest version is $piholeVersionLatest)"
-echo "::: Web-Admin version is $webVersion (Latest version is $webVersionLatest)"
+    if [[ "${latest}" == true && "${current}" == false ]]; then
+        piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+        echo ${piholeVersionLatest}
+    elif [[ "${latest}" == false && "${current}" == true ]]; then
+        piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
+        echo ${piholeVersion}
+    else
+        piholeVersion=$(cd /etc/.pihole/ && git describe --tags --abbrev=0)
+        piholeVersionLatest=$(curl -s https://api.github.com/repos/pi-hole/pi-hole/releases/latest | grep -Po '"tag_name":.*?[^\\]",' |  perl -pe 's/"tag_name": "//; s/^"//; s/",$//')
+        echo "::: Pi-hole version is $piholeVersion (Latest version is $piholeVersionLatest)"
+    fi
+}
 
+helpFunc()
+{
+    echo ":::"
+	echo "::: Show Pi-hole/Web Admin versions"
+	echo ":::"
+	echo "::: Usage: pihole -v [ -a | -p ] [ -l | -c ]"
+	echo ":::"
+	echo "::: Options:"
+	echo ":::  -a, --admin          Show both current and latest versions of web admin"
+	echo ":::  -p, --pihole         Show both current and latest versions of Pi-hole core files"
+	echo ":::  -l, --latest         (Only after -a | -p) Return only latest version"
+	echo ":::  -c, --current        (Only after -a | -p) Return only current version"
+	echo ":::  -h, --help           Show this help dialog"
+	echo ":::"
+	exit 0
 }
 
+if [[ $# = 0 ]]; then
+	normalOutput
+fi
+
 for var in "$@"
 do
   case "$var" in
-    "-j" | "--json"  ) outputJSON;;
-    "-h" | "--help"  ) displayHelp;;
-    *                ) normalOutput;;
+    "-a" | "--admin"     ) shift; webOutput "$@";;
+    "-p" | "--pihole"    ) shift; coreOutput "$@" ;;
+    "-h" | "--help"      ) helpFunc;;
+    *                    ) helpFunc;;
   esac
 done