#!/system/bin/sh
# $1 setup
controller=$(getprop sys.usb.controller)
moddir=[MODDIR]

exec >>"$moddir"/ghid.log
exec 2>>"$moddir"/ghid.log
date
set -o xtrace
set -o nohup
set +o errexit
set +o sh
set +o posix
exec >>"$moddir"/oghid.log
exec 2>>"$moddir"/oghid.log

remove_ghid() {
    echo "disabling ghid"
    rm /config/usb_gadget/g1/configs/b.1/fhid
    rmdir /config/usb_gadget/g1/functions/hid.usb0
}

enable_ghid() {
    . "$moddir/definitions/keyboard-standard"
    if [ ! -d /config/usb_gadget/g1/functions/hid.usb0 ]; then
        mkdir /config/usb_gadget/g1/functions/hid.usb0
    fi
    current_protocol="$(cat /config/usb_gadget/g1/functions/hid.usb0/protocol)"
    current_subclass="$(cat /config/usb_gadget/g1/functions/hid.usb0/subclass)"
    current_report_length="$(cat /config/usb_gadget/g1/functions/hid.usb0/report_length)"

    if [ -e /config/usb_gadget/g1/functions/hid.usb0 ] && [ "$current_protocol" = "$protocol" ] && [ "$current_subclass" = "$subclass" ] && [ "$current_report_length" = "$report_length" ] && diff "$moddir/reports/$report_name" /config/usb_gadget/g1/functions/hid.usb0/report_desc; then
        echo nothing to update
        cd /config/usb_gadget/g1/configs/b.1/
        /data/adb/magisk/busybox ln -nsf ../../../../usb_gadget/g1/functions/hid.usb0 ./fhid
        return 0
    fi

    echo new ghid

    echo protocol: "$protocol"
    echo subclass: "$subclass"
    echo report_length: "$report_length"

    echo "$protocol" >/config/usb_gadget/g1/functions/hid.usb0/protocol
    echo "$subclass" >/config/usb_gadget/g1/functions/hid.usb0/subclass
    echo "$report_length" >/config/usb_gadget/g1/functions/hid.usb0/report_length
    cat "$moddir/reports/$report_name" >/config/usb_gadget/g1/functions/hid.usb0/report_desc

    cd /config/usb_gadget/g1/configs/b.1/
    /data/adb/magisk/busybox ln -nsf ../../../../usb_gadget/g1/functions/hid.usb0 ./fhid

    # Normally we would let init take care of this but if we are connected when we boot up,
    # init will have already set this before we can setup the hid device
    if [ "$(getprop sys.boot_completed)" != "1" ]; then
        echo none >/config/usb_gadget/g1/UDC
        echo "$controller" >/config/usb_gadget/g1/UDC
    fi
}

echo success ghid was run with: "$@"

case "$1" in
"init")
    enable_ghid
    ;;
"remove")
    remove_ghid
    ;;
*)
    shift
    exit 0
    ;;
esac

restorecon /dev/hidg*