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113 lines
4.1 KiB
Bash
113 lines
4.1 KiB
Bash
# lib/user-timers-lib.sh — shared systemd **user** timer machinery for the pos
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# tools that schedule one-shot jobs: the entertainment module and the system
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# scheduler. Sourced by lib/entertainment-lib.sh and lib/scheduler-lib.sh AFTER
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# lib/common.sh. Defines only ut_* helpers so it never collides with either lib.
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#
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# Both libs previously re-implemented the same interval→OnCalendar mapping, unit
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# pair writer and linger bootstrap (the two copies drifted — e.g. the
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# TimeoutStopSec fix had to be applied to both). This is the single source for:
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# ut_interval_to_oncalendar ut_interval_label ut_unit_name
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# ut_write_unit_pair ut_ensure_linger
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# common.sh helpers (guarded so the lib is safe if common.sh wasn't loaded)
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declare -F err >/dev/null || err() { echo "ERROR: $*" >&2; exit 1; }
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declare -F warn >/dev/null || warn() { echo "[!] $*"; }
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declare -F ok >/dev/null || ok() { echo " OK $*"; }
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declare -F log >/dev/null || log() { echo "[+] $*"; }
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USER_SYSTEMD_DIR="${USER_SYSTEMD_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/systemd/user}"
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# ── Interval → systemd OnCalendar ─────────────────────────────────
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# Named + numeric intervals shared by both schedulers, or a raw OnCalendar=…
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# spec passed through unchanged. Returns non-zero for invalid values.
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ut_interval_to_oncalendar() {
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local i="$1"
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case "$i" in
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OnCalendar=*) printf '%s' "${i#OnCalendar=}"; return 0 ;;
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esac
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if [[ "$i" =~ ^([0-9]+)m$ ]]; then
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local n="${BASH_REMATCH[1]}"
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[ "$n" -ge 1 ] && [ "$n" -le 59 ] || return 1
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printf '*:00/%s:00' "$n"; return 0
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fi
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if [[ "$i" =~ ^([0-9]+)h$ ]]; then
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local n="${BASH_REMATCH[1]}"
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[ "$n" -ge 1 ] && [ "$n" -le 23 ] || return 1
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printf '*-*-* 00/%s:00:00' "$n"; return 0
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fi
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case "$i" in
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hourly) printf '*-*-* *:00:00' ;;
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daily) printf '*-*-* 08:00:00' ;;
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weekly) printf 'Mon *-*-* 08:00:00' ;;
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*) return 1 ;;
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esac
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return 0
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}
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ut_interval_label() {
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case "$1" in
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daily) echo "daily (08:00)" ;;
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weekly) echo "weekly (Mon 08:00)" ;;
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hourly) echo "hourly" ;;
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OnCalendar=*) echo "${1#OnCalendar=}" ;;
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*m|*h|*d) echo "every $1" ;;
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*) echo "$1" ;;
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esac
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}
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# ── Unit naming / writer ──────────────────────────────────────────
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ut_unit_name() { # $1 = prefix (e.g. pos-entertainment), $2 = name → prefix-name
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printf '%s-%s\n' "$1" "$2"
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}
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# Write one service/timer pair (oneshot, network-online, Persistent).
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# Usage: ut_write_unit_pair <service-file> <timer-file> <description> <execstart> <oncal>
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ut_write_unit_pair() {
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local svc="$1" timer="$2" desc="$3" execstart="$4" oncal="$5"
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mkdir -p "$USER_SYSTEMD_DIR"
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cat >"$svc" <<EOF
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[Unit]
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Description=$desc
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After=network-online.target
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Wants=network-online.target
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[Service]
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Type=oneshot
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ExecStart=$execstart
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TimeoutStopSec=5s
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[Install]
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WantedBy=timers.target
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EOF
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cat >"$timer" <<EOF
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[Unit]
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Description=Schedule: $desc
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[Timer]
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OnCalendar=$oncal
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Persistent=true
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[Install]
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WantedBy=timers.target
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EOF
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chmod 644 "$svc" "$timer"
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}
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# ── Linger bootstrap ──────────────────────────────────────────────
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# Timers only fire without a login when the user has linger enabled; try once,
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# warn with the exact command otherwise (never fails the caller).
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ut_ensure_linger() {
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local user
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user="$(id -un)"
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[ "$user" = "root" ] && { warn "running as root — enable linger for your real user: sudo loginctl enable-linger <user>"; return 0; }
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command -v loginctl >/dev/null 2>&1 || return 0
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if loginctl show-user "$user" 2>/dev/null | grep -q '^Linger=yes'; then
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return 0
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fi
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if sudo -n loginctl enable-linger "$user" 2>/dev/null; then
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ok "enabled linger for $user (timers fire without login)"
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else
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warn "run once so timers fire without login: sudo loginctl enable-linger $user"
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fi
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}
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