#!/bin/sh
# UTF-8
# yuki-lab.jp Raspberry Pi用電源 ON/OFF回路 Shutdown時に電源が切れるようにする

# 使用するGPIO番号
GPIO=25

# スクリプト名称
SNAME=/usr/local/bin/yuki-poweroff.sh

# 電源を切るスクリプト内容
SCR=`cat <<EOS
# GPIO${GPIO} out setting
echo "${GPIO}" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio${GPIO}/direction

# GPIO${GPIO} Low
echo "0" > /sys/class/gpio/gpio${GPIO}/value

sleep 1

# GPIO${GPIO} High
echo "1" > /sys/class/gpio/gpio${GPIO}/value
EOS
`


# Systemdの設定ファイル
CNF=`cat <<EOM
[Unit]
Description=Hardware Power OFF
Requires=poweroff.target
After=local-fs.target
DefaultDependencies=false

[Service]
Type=oneshot
ExecStart=${SNAME}
RemainAfterExit=true

[Install]
WantedBy=halt.target poweroff.target
EOM
`


# Raspbianバージョンチェック
ver=`cat /etc/debian_version | awk -F. '{print $1}'`

if [ $ver -lt 8 ];
then
	echo please add to /etc/default/halt
	echo
	echo "$SCR"
	exit
fi

echo "#!/bin/sh" > $SNAME
if [ $? -ne 0 ]; then
	echo ERROR 1
	exit
fi
echo "" >> $SNAME
echo "$SCR" >> $SNAME
chmod +x $SNAME

echo "$CNF" > /etc/systemd/system/yuki-poweroff.service
if [ $? -ne 0 ]; then
	echo ERROR 2
	exit
fi

systemctl daemon-reload
systemctl enable yuki-poweroff.service
if [ $? -ne 0 ]; then
	echo ERROR 3
	exit
fi

echo Install Done.
exit