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dotfiles/.local/bin/calcurse-sync
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Daniele Fucini 3bb25669ea calcurse: sync with Google Calendar via calcurse-caldav
Hourly timer started from xmonad, plus UI hooks that sync before load and after exit. calcurse-sync notifies once when the OAuth login expires and restarts the daemon after imports, since it never re-reads its files.
2026-11-12 14:16:36 +01:00

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#!/bin/bash
# Sync calcurse with Google Calendar via calcurse-caldav; notify once when the weekly OAuth login expires.
# --now: called from the UI's pre-load hook (skip the UI check, shorter timeout, no daemon restart).
set -uo pipefail
data=${XDG_DATA_HOME:-$HOME/.local/share}/calcurse
state=${XDG_STATE_HOME:-$HOME/.local/state}/calcurse-sync
expired_flag=$state/login-expired
now=false
[[ ${1:-} == --now ]] && now=true
# The UI keeps the data in memory, so syncing under it would lose changes; its post-save hook syncs after it exits.
ui_running() {
# shellcheck disable=SC2009 # pgrep can't match "has any terminal"
ps -C calcurse -o tty= | grep -qv '?'
}
if ! $now && ui_running; then
echo "calcurse UI is running, skipping"
exit 0
fi
mkdir -p "$state"
# BROWSER=true: an expired login must not open browser tabs on its own.
out=$(BROWSER=true timeout "$($now && echo 15 || echo 60)" calcurse-caldav 2>&1)
rc=$?
printf '%s\n' "$out"
if ((rc != 0)); then
if grep -q 'Access token is missing or refresh token is expired' <<<"$out"; then
if [[ ! -e $expired_flag ]]; then
notify-send -a calcurse -u critical -i x-office-calendar "Google Calendar login expired" \
"Run calcurse-caldav in a terminal, allow access in the browser, then calcurse-caldav --authcode '<code>'."
touch "$expired_flag"
fi
elif grep -q 'Another synchronization instance' <<<"$out"; then
exit 0
fi
exit "$rc"
fi
rm -f "$expired_flag"
# A running daemon never re-reads the data files: restart it so imported appointments get alerts.
if ! $now && ! grep -q '^0 items imported, 0 items removed locally' <<<"$out"; then
pidfile=$data/.daemon.pid
if [[ -s $pidfile ]] && pid=$(<"$pidfile") && kill "$pid" 2>/dev/null; then
timeout 5 tail --pid="$pid" -f /dev/null
# Own scope, so the daemon outlives this oneshot service.
systemd-run --user --scope -q calcurse --daemon
echo "restarted calcurse daemon"
fi
fi