improved argument parsing

scripts/blinky-feed.sh

@@ -3,6 +3,8 @@
 # author:	Daniel Sommer <daniel.sommer@velvettear.de>
 # license: 	MIT
 
+# default_
+
 # blinky 
 blinky_url="127.0.0.1:3000"
 blinky_mode="morph"
@@ -17,11 +19,10 @@ thermal_zones=(
     "3"
 )
 
-# argument to lowercase
-arg="${1,,}"
-
-# functions
-
+#############
+# functions #
+#############
+# check for root permissions
 function checkRoot() {
     [[ "$EUID" != 0 ]] && printf "error: permission denied!\n" && exit 1
 }
@@ -74,8 +75,36 @@ function getTemperature() {
     [[ "$result" -ge "$max_temp" ]] && printf "warning: maximum temperature reached\n" && blinky_mode="pulse" && blinky_duration="1500" && return 0
 }
 
-# main part
-case "$arg" in
+
+#############
+# main part #
+#############
+argument_count="$#"
+index=1
+
+[[ "$argument_count" -lt 1 ]] && printf "error: missing arguments\n" && exit 1 
+
+url="${@: $argument_count: 1}"
+
+while [[ "$index" -lt $(( $argument_count -1 )) ]]; do
+    argument="${@: $index: 1}"
+    argument="${argument,,}"
+    (( index++ ))
+    case "$argument" in 
+        -bm|--blinky-mode)
+            blinky_mode="${@: $index: 1}"
+            ;;
+        -bd|--blinky-duration)
+            blinky_duration="${@: $index: 1}"
+            ;;
+        -m|--mode)
+            mode="${@: $index: 1}"
+            ;;
+     esac
+done
+
+printf "checking mode '$mode'...\n"
+case "$mode" in
 	-t|--temp|--temperature)
         checkRoot
 		getTemperature
@@ -83,6 +112,6 @@ case "$arg" in
 		sendPOST "color=$result" "mode=$blinky_mode" "duration=$blinky_duration"
 		;;
 	*)
-		printf "error: no argument given or argument unknown!\n" && exit 1
+        sendPOST "color=random" "mode=$blinky_mode" "duration=$blinky_duration"
 		;;
 esac