#!/bin/bash
# Mount SD card and start dashcam transfer.
# Called by udev rule 99-dashcam-trigger.rules via systemd-run.
# systemd-run is used (not direct udev exec) because udev context
# lacks mount/umount permissions on Fedora with SELinux enforcing.
#
# The udev rule passes the kernel name (e.g. "sde1") as $1 so the
# device is mounted dynamically, independent of its filesystem UUID.
DEV=${1:+/dev/$1}
logger -t dashcam-transfer "Trigger: SD card detected ($DEV)"
if [ -n "$1" ]; then
    for ((i=0; i<60; i++)); do
        if [ -e "$DEV" ]; then
            logger -t dashcam-transfer "Trigger: device ready after ${i}s"
            break
        fi
        sleep 1
    done
else
    UUID=$(lsblk -rno UUID /dev/sde1 2>/dev/null)
    DEV=/dev/disk/by-uuid/$UUID
    for ((i=0; i<60; i++)); do
        if [ -e "$DEV" ]; then
            logger -t dashcam-transfer "Trigger: device ready after ${i}s"
            break
        fi
        sleep 1
    done
fi
while mountpoint -q /mnt/sdcard 2>/dev/null; do
    umount /mnt/sdcard 2>/dev/null || break
done
mount "$DEV" /mnt/sdcard -o uid=1000,gid=1000,fmask=0000,dmask=0000
if [ $? -eq 0 ]; then
    logger -t dashcam-transfer "Trigger: mounted, starting transfer"
    systemctl start dashcam-transfer
else
    logger -t dashcam-transfer "TRIGGER ERROR: mount failed"
fi