#!/bin/bash

SHOPPINGITEM=""
AMOUNT=""
UNIT=""
SITEID=""
PARAMS=""
SESSIONID=""

while (( "$#" )); do
  case "$1" in
    --shoppingAmount)
      if [ -n "$2" ] && [ ${2:0:1} != "-" ]; then
        AMOUNT=$2
        shift 2
      else
        echo "Error: Argument for $1 is missing" >&2
        exit 1
      fi
      ;;
    --shoppingUnit)
      if [ -n "$2" ] && [ ${2:0:1} != "-" ]; then
        UNIT=$2
        shift 2
      else
        echo "Error: Argument for $1 is missing" >&2
        exit 1
      fi
      ;;
    --shoppingProduct)
      if [ -n "$2" ] && [ ${2:0:1} != "-" ]; then
        SHOPPINGITEM=$2
        shift 2
      else
        echo "Error: Argument for $1 is missing" >&2
        exit 1
      fi
      ;;
    --siteId)
      if [ -n "$2" ] && [ ${2:0:1} != "-" ]; then
        SITEID=$2
        shift 2
      else
        echo "Error: Argument for $1 is missing" >&2
        exit 1
      fi
      ;;
    --sessionId)
      if [ -n "$2" ] && [ ${2:0:1} != "-" ]; then
        SESSIONID=$2
        shift 2
      else
        echo "Error: Argument for $1 is missing" >&2
        exit 1
      fi
      ;;
    -*|--*=) # unsupported flags
      echo "Error: Unsupported flag $1" >&2
      exit 1
      ;;
    *) # preserve positional arguments
      PARAMS="$PARAMS $1"
      shift
      ;;
  esac
done

# set positional arguments in their proper place
eval set -- "$PARAMS"

if [ "$SHOPPINGITEM" = "" ]
then
	echo "Was soll ich von der Liste streichen?"
	exit 1
else
	lengthAmount=${#AMOUNT}
        lengthUnit=${#UNIT}

        if [ $lengthAmount -gt 0 ]
        then
                if [ $lengthUnit -gt 0 ]
		then
                        java -jar /home/pi/hc_scripts/ShoppingList.jar --action removeFromList --shoppingAmount $AMOUNT --shoppingUnit $UNIT --shoppingProduct $SHOPPINGITEM
                else
                        java -jar /home/pi/hc_scripts/ShoppingList.jar --action removeFromList --shoppingAmount $AMOUNT --shoppingProduct $SHOPPINGITEM
                fi
        else
                java -jar /home/pi/hc_scripts/ShoppingList.jar --action removeFromList --shoppingProduct $SHOPPINGITEM
        fi

        if [ "$?" -eq "0" ]
        then
                exit 0
        else
                exit 1
        fi
fi