#compdef hashcat
#
tokens=(${(z)LBUFFER})

if [[ "${LBUFFER[-1]}" == " " ]]; then
	previousArg="${tokens[-1]}"
else
	previousArg="${tokens[-2]}"
fi


trim(){
	cat - | sed 's/^[[:space:]]*//' | sed 's/[[:space:]]*$//'
}

_args(){
	hashcat --help | sed -n '/Options/,/Hash modes/p' | tail -n +5 | head -n -2 | while read line; do
		op="$(echo "$line" | cut -d"|" -f1 | trim)"
		description="$(echo "$line" | cut -d"|" -f3 | trim)"
		ty="$(echo "$line" | cut -d"|" -f2 | trim)"
		echo "$op" | sed 's/,/\n/' | trim | awk "{print \$1 \":$description:$ty\"}"
	done
}

_hashes(){
	hashcat --example-hashes | awk -v RS="\n\n" -F "\t" '{gsub("\n","\t",$0); print $1 ":" $2 }' | sed 's/MODE: //; s/TYPE: //'
}

_basic_section(){
	hashcat --help | sed -n '/'"$1"'/,/- \[/p' | tail -n +5 | head -n -2 | awk -F '|' '{gsub(/ /, "", $1); print $1 ":" $2}'
}
_modes(){
	hashcat --help | sed -n '/Attack Modes/,/- \[/p' | tail -n +5 | head -n -2 | awk -F '|' '{gsub(/ /, "", $1); print $1 ":" $2}'
}

_brain_client_features(){
	hashcat --help | sed -n '/Attack Modes/,/- \[/p' | tail -n +5 | head -n -2 | awk -F '|' '{gsub(/ /, "", $1); print $1 ":" $2}'
}

best_guess(){
	# This get all possible arguments in the form argument:description:type
	allArgs="$(_args)"
	curr="$(echo "$allArgs" | grep -E "^$previousArg:")"
	if [ -z  "$(echo "$curr" | cut -d':' -f3)" ]; then
		# If the type is empty, there should be no positional options
		# Complete full list of arguments
		args=("${(f)$(echo "$allArgs" | cut -d':' -f1-2)}")
		_describe "Help" args
	else
		case "$(echo "$curr" | cut -d':' -f3)" in
			# If it takes a file, prompt to choose a file
			File) _files ;;
			# Otherwise, just show a message containing the description
			*) _message -r "$(echo "$curr" | cut -d':' -f2)" ;;
		esac
	fi
}

case "$previousArg" in
	-m|--hash-type)
		hashes=("${(f)$(_hashes)}")
		_describe "Hashes" hashes ;;
	-a|--attack-mode)
		ops=("${(f)$(_basic_section "Attack Modes")}")
		_describe "Modes" ops ;;
	--brain-client-features)
		ops=("${(f)$(_basic_section "Brain Client Features")}")
		_describe "Modes" ops ;;
	--outfile-format)
		ops=("${(f)$(_basic_section "Outfile Formats")}")
		_describe "Modes" ops ;;
	--debug-mode)
		ops=("${(f)$(_basic_section "Rule Debugging Modes")}")
		_describe "Modes" ops ;;
	#--)
	#	ops=("${(f)$(_basic_section "Built-in Charsets")}")
	#	_describe "Modes" ops ;;
	-D|--opencl-device-types)
		ops=("${(f)$(_basic_section "OpenCL Device Types")}")
		_describe "Modes" ops ;;
	-w|--workload-profile)
		ops=("${(f)$(_basic_section "Workload Profiles")}")
		_describe "Modes" ops ;;

	*) best_guess ;;
esac