# specify arbitrary curl arguments - passed directly to curl
c() {
	curl_args="$1"
}

# help
h() {
	echo "Usage: rsstube [OPTIONS] URL"
	echo "Do 'man rsstube' to see the manual for rsstube."
	exit
}

# non-network mode (do not download page)
n() {
	network="false"
}

# proxy
p() {
	proxy="-x $1 "
}

# quiet (use curl in silent mode)
q() {
	quiet="--silent "
}

# curl options for Tor (to avoid Cloudflare blocks)
t() {
	tor_header=""
	while read line
	do
		tor_header="${tor_header}${line} "
	done < conf/tor-browser-header
	curl_args="${curl_args} ${tor_header}"
}

# update rsstube
U() {
	update="true"
}

# display version
V() {
	version=`cat docs/version`
	echo "rsstube v${version}"
	exit
}

global_config="/etc/rsstube/config"
local_config="$HOME/.config/rsstube/config"
config_file=""

# local_config takes precedence over global_config, and only one (at most) will be used
if [[ -f "$local_config" ]]
then
	config_file=${local_config}
elif [[ -f "$global_config" ]]
then
	config_file=${global_config}
fi

# default assume we're not using Tor mode
tor_mode=""

if [[ -n "$config_file" ]]
then
	while read line
	do
		# cut whitespace from beginning of line
		line=${line##*( )}
		
		# ignore commented out lines
		if [[ -n $line && ${line:0:1} != "#" ]]
		then
			# get just argument
			cmd=${line%% *}
			
			case $cmd in
				-c|--curl-args) c "${line#* }" ;;
				-h|--help|help) h ;;
				-n|--non-network) n ;;
				-p|--proxy) p "${line#* }" ;;
				-q|--quiet) q ;;
				-t|--tor-mode) tor_mode="true" ;;
				-U|--update) U ;;
				-V|--version) V ;;
				*) error "Unsupported option."; exit ;;
			esac
		fi
	done < "$config_file"
fi

# options from method call take precedence over config file options
while [[ $# -gt 0 ]]
do
	cmd="${1}"
	case $cmd in
		-c|--curl-args) shift; c "${1}" ;;
		-h|--help|help) h ;;
		-n|--non-network) n ;;
		-p|--proxy) shift; p "${1}" ;;
		-q|--quiet) q ;;
		-t|--tor-mode) tor_mode="true" ;;
		-U|--update) U ;;
		-V|--version) V ;;
		*) url="${1}" ;;
	esac
	
	# finish with this command
	shift
done

if [[ "${update}" == "true" ]]
then
	source scripts/update
	exit
fi

if [[ -n "${tor_mode}" ]]
then
	t
fi

if [[ ! -n "${url}" ]]
then
	error "No URL supplied!"
	exit
fi