#!/bin/bash

set -x 

if [ -x "$(command -v kubectl)" ]; then 
  echo 'kubectl is already installed.';
else 
  curl -s -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"; 
  curl -s -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256";
  if [ -x "$(command -v sha256sum)"]; then 
    echo 'sha256sum is already installed.';
    echo "$(cat kubectl.sha256)  kubectl" | sha256sum --check; 
  else
    echo "Install sha256sum to validate the kubectl binary but It is optional step";
  fi
  chmod +x kubectl
  mkdir -p ~/.local/bin
  mv ./kubectl ~/.local/bin/kubectl
  export PATH=~/.local/bin:$PATH
  kubectl version --client;
  rm kubectl.sha256
fi