# Sourced by managed-container; uses the shared OCF and parameter environment.

managed_promote()
{
    local monitor_rc role i

    managed_monitor
    monitor_rc=$?

    case "${monitor_rc}" in
        "${OCF_RUNNING_PROMOTED}")
            ocf_log info \
                "PostgreSQL is already primary; reconciling primary invariants"

            if ! ensure_local_ha_slots; then
                ocf_exit_reason \
                    "HA slot reconciliation failed on existing primary"
                return "${OCF_ERR_GENERIC}"
            fi

            if ! ensure_rewind_privileges; then
                ocf_exit_reason \
                    "pg_rewind privilege reconciliation failed on existing primary"
                return "${OCF_ERR_GENERIC}"
            fi

            return "${OCF_SUCCESS}"
            ;;

        "${OCF_SUCCESS}")
            # Healthy standby: continue with promotion.
            ;;

        "${OCF_NOT_RUNNING}")
            ocf_exit_reason \
                "Cannot promote PostgreSQL because the resource is not running"
            return "${OCF_ERR_GENERIC}"
            ;;

        *)
            ocf_exit_reason \
                "Cannot promote unhealthy PostgreSQL instance (monitor rc=${monitor_rc})"
            return "${monitor_rc}"
            ;;
    esac

    ocf_log info \
        "Promoting PostgreSQL standby inside ${CONTAINER_NAME}"

    if ! pg_command '
        BINDIR="$(pg_config --bindir)" || exit 1
        exec "$BINDIR/pg_ctl" \
            -D "$PGDATA" \
            promote -w
    '
    then
        ocf_exit_reason "pg_ctl promote failed"
        return "${OCF_ERR_GENERIC}"
    fi

    for i in $(seq 1 30); do
        role="$(pg_role 2>/dev/null)" || {
            sleep 1
            continue
        }

        if [ "${role}" = "f" ]; then
            ocf_log info \
                "PostgreSQL became primary; reconciling primary invariants"

            if ! ensure_local_ha_slots; then
                ocf_exit_reason \
                    "PostgreSQL promoted but HA slot reconciliation failed"
                return "${OCF_ERR_GENERIC}"
            fi

            if ! ensure_rewind_privileges; then
                ocf_exit_reason \
                    "PostgreSQL promoted but pg_rewind privilege reconciliation failed"
                return "${OCF_ERR_GENERIC}"
            fi

            ocf_log info \
                "PostgreSQL promotion completed successfully"
            return "${OCF_SUCCESS}"
        fi

        sleep 1
    done

    ocf_exit_reason \
        "PostgreSQL did not become primary after promotion"
    return "${OCF_ERR_GENERIC}"
}