#!/usr/bin/env bash
set -u -e
[[ -d /tmp/sower ]] || mkdir /tmp/sower
cd /tmp/sower

echo ========    Install sower to your system    ========
succ_message(){
	echo
	echo ========    Installed sower to your system    ========
	echo The config file is: /usr/local/etc/sower.toml
	echo please set 127.0.0.1 as the first domain name server manually.
}

# main logic
VERSION="$(curl -s "https://api.github.com/repos/wweir/sower/releases/latest" | awk -F '"'  '/tag_name/{printf $4}')"
case "$(uname -s)" in
	"Darwin")
		printf "Please enter remote server adddress: "
		read ADDRESS
		echo

		curl -SLf https://github.com/wweir/sower/releases/download/$VERSION/sower_darwin_amd64.tar.gz | tar xzv

		mv sower /usr/local/bin/

		if [[ -r /usr/local/etc/sower.toml ]]; then
			echo The config file already exists, keep the original file
		else
			sed -i~ "s/# server_addr=\"remote-server/server_addr=\"$ADDRESS/" sower.toml
			sed -i~ "s/# clear_dns_cache/clear_dns_cache/" sower.toml
			mv sower.toml /usr/local/etc/
		fi

		echo
		echo Register auto start service, root privilege is needed!
		echo
		sudo mv cc.wweir.sower.plist /Library/LaunchDaemons/
		sudo chown root:wheel /Library/LaunchDaemons/cc.wweir.sower.plist
		sudo launchctl load -w /Library/LaunchDaemons/cc.wweir.sower.plist
		succ_message
		;;

	"Linux")
		if [[ "$(cat /proc/1/comm)" != "systemd" ]]; then
			echo do not support auto deploy on SysVinit
			exit 1
		fi
		printf "Server side or client side, which do you wanna install [c/s]: "
		read SIDE
		echo

		case "$SIDE" in
			"c")
				printf "Please enter remote server adddress: "
				read ADDRESS
				echo

				curl -SLf https://github.com/wweir/sower/releases/download/$VERSION/sower_linux_amd64.tar.gz | tar xzv

				sudo mv sower /usr/local/bin/

				if [[ -r /usr/local/etc/sower.toml ]]; then
					echo The config file already exists, keep the original file
				else
					sed -i~ "s/# server_addr=\"remote-server/server_addr=\"$ADDRESS/" sower.toml
					sudo mv sower.toml /usr/local/etc/
				fi

				sudo mv sower-client.service /etc/systemd/system/
				sudo systemctl enable sower-client
				sudo systemctl start sower-client
				succ_message
				;;

			"s")
				curl -SLf https://github.com/wweir/sower/releases/download/$VERSION/sower_linux_amd64.tar.gz | tar xzv

				sudo mv sower /usr/local/bin/
				sudo mv sower-server.service /etc/systemd/system/
				sudo systemctl enable sower-server
				sudo systemctl start sower-server
				;;

			*)
				echo "invalid: $SIDE" && exit 1
				;;
		esac
		;;
	*)
		echo Do not support auto deploy on this platform.
		;;
esac