#!/usr/bin/env bash
#
# Wrapper for scheduled (systemd timer) runs of export-runner.sh.
# Sets a sane PATH (schedulers run with a minimal environment), serialises runs with
# flock so a slow run never overlaps the next tick, and logs each run under
# runtime/logs/ (gitignored).
set -uo pipefail

export PATH="/usr/local/bin:/usr/bin:/bin"
REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
LOG_DIR="$REPO_ROOT/runtime/logs"
mkdir -p "$LOG_DIR"
LOG="$LOG_DIR/export-$(date +%Y%m%d-%H%M%S).log"

# Serialise: if a previous run is still going, skip this tick instead of piling up.
exec 9>"$LOG_DIR/.lock"
if ! flock -n 9; then
    echo "$(date): another export run is still in progress — skipping this tick" >> "$LOG"
    exit 0
fi

{
    echo "=== scheduled export run: $(date) ==="
    "$REPO_ROOT/scripts/export-runner.sh"
    echo "=== exit $? at $(date) ==="
} >> "$LOG" 2>&1

# Keep the log dir tidy: drop runs older than 30 days.
find "$LOG_DIR" -name 'export-*.log' -mtime +30 -delete 2>/dev/null || true