#!/bin/bash
# rotateLogs — rotate odoo.log for all UUID containers, keep 4 weeks
# Runs as a daemon: waits for midnight, rotates, then waits for next midnight

RETENTION_DAYS=28

wait_for_midnight() {
    NOW=$(date +%s)
    MIDNIGHT=$(date -d 'tomorrow 00:00' +%s 2>/dev/null || \
        date -d "$(date -d tomorrow '+%Y-%m-%d') 00:00:00" +%s)
    SLEEP=$(( MIDNIGHT - NOW ))
    echo "Waiting ${SLEEP}s until midnight..."
    sleep "$SLEEP"
}

while true; do
    wait_for_midnight

for log in /4server/data/00*/logs/odoo.log; do
    [[ -f "$log" ]] || continue
    DIR=$(dirname "$log")
    UUID=$(basename "$(dirname "$DIR")")

    STAMP=$(date '+%Y-%m-%d_%H-%M')
    ARCHIVE="$DIR/odoo.log.$STAMP"

    # Copy preserving permissions, then truncate the live log
    PERMS=$(stat -c '%a' "$log")
    OWNER=$(stat -c '%U:%G' "$log")
    cp "$log" "$ARCHIVE"
    : > "$log"

    # Compress the archive, restore original ownership and permissions
    gzip "$ARCHIVE"
    chmod "$PERMS" "${ARCHIVE}.gz"
    chown "$OWNER" "${ARCHIVE}.gz"

    echo "$UUID  rotated -> $(basename "${ARCHIVE}.gz")"

    # Delete rotated logs older than 4 weeks
    find "$DIR" -name 'odoo.log.*.gz' -mtime +$RETENTION_DAYS -exec rm -f {} \; \
        -exec echo "$UUID  deleted: {}" \;
done

done