#!/usr/bin/bash
# OnFailure of uupd.service (after its retries): records why the update
# failed in /var/lib/quine-linux/last-update-failure.json, which update-check
# copies into update-status.json as lastFailure, for the update bar. uupd
# itself already notifies ("Some System Updates Failed"). A successful run
# deletes the file (uupd.service.d/60-quine-graceful.conf).
set -uo pipefail
dir=/var/lib/quine-linux
mkdir -p "$dir"

if [ -n "${MONITOR_INVOCATION_ID:-}" ]; then
  log=$(journalctl -o cat --no-pager _SYSTEMD_INVOCATION_ID="$MONITOR_INVOCATION_ID")
else
  log=$(journalctl -o cat --no-pager -u uupd.service -n 300)
fi
# uupd logs JSON lines (--json); keep its last few errors.
errors=$(grep '"level":"ERROR"' <<<"$log" |
  jq -r '[.msg, (.error // .err // empty)] | map(select(. != null and . != "") | tostring) | join(": ")' 2>/dev/null |
  tail -n 5)
disk_full=false
grep -qiE 'min-free-space|No space left on device' <<<"$log" && disk_full=true

jq -n --arg at "$(date -Is)" --arg errors "$errors" --argjson diskFull "$disk_full" \
  '{at: $at, diskFull: $diskFull, errors: ($errors | split("\n") | map(select(. != "")))}' \
  >"$dir/last-update-failure.json.tmp"
chmod 0644 "$dir/last-update-failure.json.tmp"
mv "$dir/last-update-failure.json.tmp" "$dir/last-update-failure.json"
/usr/libexec/quine-linux/update-check || true