#!/bin/sh
mkdir -p /var/lib/phosphor-software-manager/hostfw/nvram
NVRAM=/var/lib/phosphor-software-manager/hostfw/nvram/PHYP-NVRAM
BACKUP=/var/lib/pldm/PHYP-NVRAM
SIZE=$((1024 * 145408))

if [ ! -f "$NVRAM" ]; then
    echo "NVRAM file not found"
    NEED_CREATE=true
elif [ "$(stat -c%s "$NVRAM")" -ne "$SIZE" ]; then
    CURRENT_SIZE=$(stat -c%s "$NVRAM")
    echo "Invalid NVRAM size: $CURRENT_SIZE bytes, recreating NVRAM file"
    rm -f "$NVRAM"
    NEED_CREATE=true
else
    CURRENT_SIZE=$(stat -c%s "$NVRAM")
    echo "NVRAM file found with correct size: $CURRENT_SIZE bytes"
    NEED_CREATE=false
fi

if $NEED_CREATE; then
    if [ -f "$BACKUP" ]; then
        BACKUP_SIZE=$(stat -c%s "$BACKUP")
        if [ "$BACKUP_SIZE" -eq "$SIZE" ]; then
            echo "Backup file size valid ($BACKUP_SIZE bytes), moving to NVRAM path"
            mv "$BACKUP" "$NVRAM"
        else
            echo "Backup file size invalid ($BACKUP_SIZE bytes), deleting backup"
            rm -f "$BACKUP"
            truncate -s "$SIZE" "$NVRAM"
        fi
    else
        echo "Backup file not found, creating new NVRAM file"
        truncate -s "$SIZE" "$NVRAM"
    fi
fi