#!/bin/bash

### Checks dependencies arrays ###
depDiff=()

for oPkg in "${oDependencies[@]}"; do
    skip=
    for pkg in "${dependencies[@]}"; do
        [[ $oPkg == $pkg ]] && { skip=1; break; }
    done
    [[ -n $skip ]] || depDiff+=("$oPkg")
done

declare -p depDiff

if [[ ! "${#depDiff[@]}" == 0 ]]; then
	printf "These dependencies are newly not requred: ${depDiff[@]} \n"
	printf "Do you wish to uninstall them? [Y/n]: \n"
	read ansDiff -n 1

	if [[ "$ansDiff" =~ ("y"|"Y") || -z $ansDiff ]]; then
		
		apt remove ${depDiff[@]}

	fi
fi

### Checks dependencies ### 
DepNum=0
DepMissing=()
DepInstalled=()

if [[ "$iptables" == "yes" ]]; then
	dependencies+=('iptables')
fi

for pkg in "${dependencies[@]}"; do
	if [[ '$(dpkg-query -w --showformat="${Status}\n" $pkg | grep "install ok installed")' =~ ("install"|"ok"|"installed") ]]; then
		# pkg is installed
		((DepNum++))
		DepInstalled+=("$pkg")
	else
		# pkg is NOT installed
		DepMissing+=("$pkg") 
	fi
done

### Count dependencies ###
if   [[ "$DepNum" == "${#dependencies[@]}" ]]; then 
	#All dependencies are installed
	DepStatus="all"
elif [[ "${#DepMissing[@]}" == "${#dependencies[@]}" ]]; then
	#All dependencies are missing
	DepStatus="none"
else
	#Something is missing
	DepStatus="some"
fi

### --- ###

if   [[ "$BaseDep" == ("install") && "$DepStatus" == "all" ]]; then
	# everything is allright
	pritnf "it is done bro \n"

elif [[ "$BaseDep" == ("install") && "$DepStatus" == ("none"|"some") ]]; then
	# some or none was installed installing rest
	apt install ${DepMissing[@]}
	printf "it is done now bro \n"

elif [[ "$BaseDep" == "uninstall" && "$DepStatus" == "none" ]]; then
	# uninstall but it is not there

elif [[ "$BaseDep" == "uninstall" && "$DepStatus" == ("some"|"all") ]]; then
	# uninstall
	apt remove ${DepInstalled[@]}

elif [[ "$BaseDep" == "report" && "$DepStatus" == "none" ]]; then
	# nothing to do

elif [[ "$BaseDep" == "report" && "$DepStatus" == ("some"|"all") ]]; then
	printf "Do you want to uinstall these dependencies? [Y/n]
	printf "${DepInstalled[@]}
	read ansReport -n 1

	if [[ "$ansReport" =~ ("y"|"Y"|"yes"|"Yes") || -z $ansReport ]]; then
		apt remove ${DepInstalled[@]}
	else
		printf "Hope you know what you are doing."
	fi

else
	# error handeling
	
fi


### --- User managment --- ###
### --- File Structure --- ###


### ------------ Needs work ----------- ###

### User managment 

printf "+ creating group and user for proxy \n"
groupadd velocity

useradd --system --shell /usr/sbin/nologin --home /opt/velocity -g velocity velocity


### File structure 

printf "+ creating file structure in /opt/velocity/ \n"
mkdir /opt/velocity

cp data/velocity*.jar start.sh /opt/velocity/

mkdir /opt/velocity/plugins

cp data/velocity.toml data/forwarding.secret data/start.sh data/server-icon.png $baseInstallLocation