#!/bin/bash

eingabecheck(){
        if ! [[ "$1" =~ ^[a-zA-Z0-9\/\.\:\-]+$ ]]
        then
        	echo ERROR: at "$2":  "$1" has bad characters
                exit 1;
        fi
	case "$3" in
		bool)
			if [[ "$1" != 'true' && "$1" != 'false' ]];
			then
				echo ERROR at "$2": "$1" must be true or false
				exit 1
			fi
			;;
		cloud)
			if [[ "$1" != 'Azure' && "$1" != 'ICloud' ]];
			then
				echo ERROR at "$2": "$1" is not a supported Cloud
				exit 1
			fi
			;;
		port)
			if ! [[ "$1" = [0-9]* ]];
                        then
                                echo ERROR at "$2": "$1" ist not a valid Port
                                exit 1
                        fi
			;;
		path)
			if ! [[ "$1" =~ .?\/.*\/*.+ ]];
			then
				echo ERROR at "$2": "$1" is not a valid Path
				exit 1
			fi
			;;
		pem)
			if ! [[ "$1" =~ .*\/.*.pem ]];
			then
				echo ERROR at "$2": "$1" needs to be a .pem file
				exit 1
			fi
			;;
	esac
}

flagarray=("Enabled" "CloudType" "Host" "Port" "ClientId" "User" "Password" "TransportProtocol" "KeepAliveInterval" "CleanSession"
       	"AuthenticationMethod" "UseTLS" "CaFile" "CertFile" "KeyFile" "ProxyType" "HttpProxyHost" "HttpProxyPort" "HttpProxyUser"
       	"HttpProxyPassword" "LastWillEnabled" "LastWillTopic" "LastWillPayload" "LastWillQoS" "LastWillRetain" "MessagingProtocol"
       	"MessageProperty" "Compression"	"StandardCommandsEnabled" "SendDeviceInfo" "SendDeviceStatus" "TelemetryStopped" "CacheMode")

length=${#flagarray[@]}

for(( i=0; i < ${length}; i++)); do

	counter=$(grep -n -w -m 1 "${flagarray[i]}" /etc/dataagent/dataagent.config | cut -f1 -d:)
	counter=$(grep -n -w -m 1 "${flagarray[i]}" /etc/dataagent/dataagent.config | cut -f1 -d:)
	erase=1
	
	if [[ $# -gt 0 ]];
	then

		checkflagarray=$(echo "${flagarray[i]}" | sed "s:.*:\L&:")
       	 	checkflagoption=$(echo "$1" | sed "s:-::")
		
		if [[ "$checkflagarray" = "$checkflagoption" ]];
		then
			erase=0
			case "$1" in
				-enabled)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-cloudtype)
					shift
					eingabecheck "$1" "${flagarray[i]}" cloud
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-host)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-port)
					shift
					eingabecheck "$1" "${flagarray[i]}" port
                	        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
                	        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-clientid)
					shift
					eingabecheck "$1" "${flagarray[i]}"
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-user)
					shift
					eingabecheck "$1" "${flagarray[i]}"
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-password)
					shift
					eingabecheck "$1" "${flagarray[i]}"
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-transportprotocol)
					shift
					eingabecheck "$1" "${flagarray[i]}"
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-keepaliveinterval)
					shift
					eingabecheck "$1" "${flagarray[i]}"
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-cleansession)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-authenticationmethod)
					shift
					eingabecheck "$1" "${flagarray[i]}"
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
                        		sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-usetls)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
	                        	sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-cafile)
					shift
					eingabecheck "$1" "${flagarray[i]}" path
					sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
					sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
					shift
					;;
				-certfile)
					shift
					eingabecheck "$1" "${flagarray[i]}" path
					eingabecheck "$1" "${flagarray[i]}" pem
					sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
					sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
					shift
					;;	
				-keyfile)
					shift
					eingabecheck "$1" "${flagarray[i]}" path
                                        eingabecheck "$1" "${flagarray[i]}" pem
		                        sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
		                        sed -i "$counter s+:\s\".*\"+: \""$(echo "$1" | sed 's:/:\\\\\\/:g')"\"+" /etc/dataagent/dataagent.config
					shift
					;;
				-proxytype)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-httpproxyhost)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-httpproxyport)
					shift
					eingabecheck "$1" "${flagarray[i]}" port
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-httpproxyuser)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-httpproxypassword)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-lastwillenabled)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-lastwilltopic)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-lastwillpayload)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-lastwillqos)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-lastwillretain)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-messagingprotocol)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-messageproperty)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-compression)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-standardcommandsenabled)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-senddeviceinfo)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-senddevicestatus)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-telemetrystopped)
					shift
					eingabecheck "$1" "${flagarray[i]}" bool
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				-cachemode)
					shift
					eingabecheck "$1" "${flagarray[i]}"
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					sed -i "$counter s/:\s\".*\"/: \""$1"\"/" /etc/dataagent/dataagent.config
					shift
					;;
				esac
			
				if [[ $i == $length-1 ]] && [[ "$checkflagarray" = "$checkflagoption" ]];
				then
					echo ERROR : FLAG: "$1" NOT FOUND
					exit 1
				fi	
		fi	
	fi

	if [[ $erase = 1 ]];
	then
		sed -i "$counter s/:\s\".*\"/: \"\"/" /etc/dataagent/dataagent.config
		sed -i "$counter s/:\s\".*\"/: \"\"/" /etc/dataagent/dataagent.config
	fi
	unset flagarray[i]
done