#!/bin/bash

arg_has_json()
{
    for arg in $@; do
        if [ ${arg} = "-j" ]; then
            return 0
        fi
    done

    return 1
}

list_to_json()
{
    mystr=${1}
    out=""

    for i in ${mystr}; do
        if [ -z "${out}" ]; then
            out="\"${i}\""
        else
            out="${out},\"${i}\""
        fi
    done

    echo "[${out}]"
}

list_to_human_readable()
{
    mystr=${1}
    out=""

    for i in ${mystr}; do
        if [ -z "${out}" ]; then
            out="${i}"
        else
            out="${out},${i}"
        fi
    done

    echo "${out}"
}

map_to_json()
{
    var=$(declare -p "$1")
    eval "declare -A _arr="${var#*=}
    last_index=${#_arr[@]}
    last_index=$((last_index-1))
    loops=0

    echo "{"
    for k in "${!_arr[@]}"; do
        if [ ${loops} -lt ${last_index} ]; then
            echo "  \"$k\": \"${_arr[$k]}\","
        else
            echo "  \"$k\": \"${_arr[$k]}\""
        fi
        loops=$((loops+1))
    done
    echo "}"
}

map_to_human_readable()
{
    var=$(declare -p "$1")
    eval "declare -A _arr="${var#*=}
    for k in "${!_arr[@]}"; do
        echo "$k:${_arr[$k]}"
    done
}

strip_device_name()
{
    device=${1#"/dev/"}
    echo ${device}
}

must_run_as_root()
{
    if [[ $EUID -ne 0 ]]; then
        echo "This script must be run as root" 
        exit 1
    fi
}

get_deferred_config()
{
    ENV_VAR=${DEFER_CONFIG:-}

    if [[ "${ENV_VAR}" = "true" ]] || \
       [[ "${ENV_VAR}" = "yes" ]] || \
       grep -q defer_config /proc/cmdline; then
        return 0
    fi

    return 1
}

platform_abridged_write()
{
    ENV_VAR=${PLATFORM_ABRIDGED_WRITE:-}

    if [[ "${ENV_VAR}" = "true" ]] || \
       [[ "${ENV_VAR}" = "yes" ]] || \
        grep -q platform_abridged_write /proc/cmdline; then
        return 0
    fi

    return 1
}

skip_platform_detection()
{
    ENV_VAR=${SKIP_PLATFORM_DETECTION:-}

    if [[ "${ENV_VAR}" = "true" ]] || \
       [[ "${ENV_VAR}" = "yes" ]] || \
       grep -q skip_platform_detection /proc/cmdline; then
        return 0
    fi

    return 1
}

is_rhel_like_os()
{
    . /etc/os-release

    if [[ "$ID_LIKE" == *centos* ]] || \
       [[ "$ID_LIKE" == *fedora* ]] || \
       [[ "$ID_LIKE" == *rhel* ]]; then
        return 0
    fi

    return 1
}