#!/bin/bash

declare -r EXIT_SUCCESS="0"
declare -r EXIT_TIMEOUT="1"

declare -r QSFP_PATH="/var/run/hw-management/qsfp"

function WaitForQsfpReady() {
    local -r _QSFP_PATH="${1}"

    local -i _WDOG_CNT="1"
    local -ir _WDOG_MAX="300"

    local -r _TIMEOUT="1s"

    while [[ "${_WDOG_CNT}" -le "${_WDOG_MAX}" ]]; do
        for _QSFP in ${_QSFP_PATH}/qsfp*; do
            if [[ -e "${_QSFP}" ]]; then
                return "${EXIT_SUCCESS}"
            fi
        done

        let "_WDOG_CNT++"
        sleep "${_TIMEOUT}"
    done

    return "${EXIT_TIMEOUT}"
}

echo "Wait for QSFP I2C interface is ready"

WaitForQsfpReady "${QSFP_PATH}"
EXIT_CODE="$?"
if [[ "${EXIT_CODE}" != "${EXIT_SUCCESS}" ]]; then
    echo "QSFP I2C interface is not ready: timeout"
    exit "${EXIT_CODE}"
fi

echo "QSFP I2C interface is ready: mlxsw_minimal has finished initialization"
exit "${EXIT_SUCCESS}"