#!/bin/sh

[ -n "$INCLUDE_ONLY" ] || {
	. /lib/functions.sh
	. ../netifd-proto.sh
	init_proto "$@"
}

proto_qmi_init_config() {
	available=1
	no_device=1
	proto_config_add_string "device:device"
	proto_config_add_string apn
	proto_config_add_string auth
	proto_config_add_string username
	proto_config_add_string password
	proto_config_add_string pincode
	proto_config_add_string delay
	proto_config_add_string modes
}

qmi_disconnect() {
	# disable previous autoconnect state using the global handle
	# do not reuse previous wds client id to prevent hangs caused by stale data
	uqmi -s -d "$device" \
		--stop-network 0xffffffff \
		--autoconnect > /dev/null
}

qmi_wds_release() {
	[ -n "$cid" ] || return 0

	uqmi -s -d "$device" --set-client-id wds,"$cid" --release-client-id wds
	uci_revert_state network $interface cid
}

_proto_qmi_setup() {
	local interface="$1"

	local device apn auth username password pincode delay modes cid pdh
	json_get_vars device apn auth username password pincode delay modes

	[ -n "$ctl_device" ] && device=$ctl_device

	[ -n "$device" ] || {
		echo "No control device specified"
		proto_notify_error "$interface" NO_DEVICE
		proto_set_available "$interface" 0
		return 1
	}
	[ -c "$device" ] || {
		echo "The specified control device does not exist"
		proto_notify_error "$interface" NO_DEVICE
		proto_set_available "$interface" 0
		return 1
	}

	devname="$(basename "$device")"
	devpath="$(readlink -f /sys/class/usbmisc/$devname/device/)"
	ifname="$( ls "$devpath"/net )"
	[ -n "$ifname" ] || {
		echo "The interface could not be found."
		proto_notify_error "$interface" NO_IFACE
		proto_set_available "$interface" 0
		return 1
	}

	[ -n "$delay" ] && sleep "$delay"

	while uqmi -s -d "$device" --get-pin-status | grep '"UIM uninitialized"' > /dev/null; do
		sleep 1;
	done

	[ -n "$pincode" ] && {
		uqmi -s -d "$device" --verify-pin1 "$pincode" || {
			echo "Unable to verify PIN"
			proto_notify_error "$interface" PIN_FAILED
			proto_block_restart "$interface"
			return 1
		}
	}

	[ -n "$apn" ] || {
		echo "No APN specified"
		proto_notify_error "$interface" NO_APN
		return 1
	}

	qmi_disconnect

	uqmi -s -d "$device" --set-data-format 802.3
	uqmi -s -d "$device" --wda-set-data-format 802.3

	echo "Waiting for network registration"
	while uqmi -s -d "$device" --get-serving-system | grep '"searching"' > /dev/null; do
		sleep 5;
	done

	[ -n "$modes" ] && uqmi -s -d "$device" --set-network-modes "$modes"

	echo "Starting network $apn"
	cid=`uqmi -s -d "$device" --get-client-id wds`
	[ $? -ne 0 ] && {
		echo "Unable to obtain client ID"
		proto_notify_error "$interface" NO_CID
		return 1
	}

	uqmi -s -d "$device" --set-client-id wds,"$cid" \
		--start-network "$apn" \
		${auth:+--auth-type $auth} \
		${username:+--username $username} \
		${password:+--password $password} \
		--autoconnect > /dev/null

	echo "Starting DHCP"
	proto_init_update "$ifname" 1
	proto_send_update "$interface"

	json_init
	json_add_string name "${interface}_4"
	json_add_string ifname "@$interface"
	json_add_string proto "dhcp"
	json_close_object
	ubus call network add_dynamic "$(json_dump)"

	json_init
	json_add_string name "${interface}_6"
	json_add_string ifname "@$interface"
	json_add_string proto "dhcpv6"
	json_add_string extendprefix 1
	json_close_object
	ubus call network add_dynamic "$(json_dump)"
}

proto_qmi_setup() {
	local ret

	_proto_qmi_setup $@
	ret=$?

	[ "$ret" = 0 ] || {
		logger "qmi bringup failed, retry in 15s"
		sleep 15
	}

	return $rt
}

proto_qmi_teardown() {
	local interface="$1"

	local device
	json_get_vars device

	[ -n "$ctl_device" ] && device=$ctl_device

	local cid=$(uci_get_state network $interface cid)

	echo "Stopping network"
	qmi_disconnect
	qmi_wds_release

	proto_init_update "*" 0
	proto_send_update "$interface"
}

[ -n "$INCLUDE_ONLY" ] || {
	add_protocol qmi
}