#!/bin/bash
# setup-gpio85-systemd.sh
# 一键安装 GPIO85 初始化脚本 + systemd 服务
# 日志去掉，直接操作 GPIO85

# ---------------------- 权限检查 ----------------------
if [ "$EUID" -ne 0 ]; then
    echo "请使用 root 用户或 sudo 执行此脚本"
    exit 1
fi

# ---------------------- 配置变量 ----------------------
GPIO=85
INIT_SCRIPT=/usr/local/bin/init-gpio85.sh
SERVICE_FILE=/etc/systemd/system/gpio85.service

# ---------------------- 创建 GPIO 初始化脚本 ----------------------
cat << EOF > $INIT_SCRIPT
#!/bin/bash
# 自动初始化 GPIO$GPIO
GPIO=$GPIO

# 如果 gpio$GPIO 未被 export，则 export
if [ ! -d /sys/class/gpio/gpio\$GPIO ]; then
    echo \$GPIO > /sys/class/gpio/export
    sleep 0.1
fi

# 设置方向为输出
echo out > /sys/class/gpio/gpio\$GPIO/direction
sleep 0.05

# 设置权限为 777
chmod 777 /sys/class/gpio/gpio\$GPIO/*
EOF

chmod +x $INIT_SCRIPT
echo "✅ GPIO$GPIO 初始化脚本创建完成：$INIT_SCRIPT"

# ---------------------- 创建 systemd 服务 ----------------------
cat << EOF > $SERVICE_FILE
[Unit]
Description=Initialize GPIO$GPIO
After=multi-user.target

[Service]
Type=oneshot
ExecStart=$INIT_SCRIPT
RemainAfterExit=yes
User=root

[Install]
WantedBy=multi-user.target
EOF

echo "✅ systemd 服务创建完成：$SERVICE_FILE"

# ---------------------- 启用并启动服务 ----------------------
systemctl daemon-reload
systemctl enable gpio85.service
systemctl start gpio85.service

# ---------------------- 输出状态 ----------------------
systemctl status gpio85.service --no-pager
echo "✅ GPIO$GPIO systemd 服务已启用并启动"