#!/usr/bin/env bash

source .utils

NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
set -e
NAMESPACE=${NAMESPACE:-default}
POD=""
CMD="sh"

print_usage() {
  blue "kube-exec - execute commands within a pod"
  echo " "
  underline "Usage:"
  echo "kube-exec [options]"
  echo " "
  underline "Options:"
  echo "-h, --help            show this help text"
  echo "-n, --namespace       the namespace the pod is in"
  echo "-p, --pod             the name of the pod"
  echo "-c, --command         the command to run in the pod (default: sh)"
}

while test $# -gt 0; do
  case "$1" in
    -n|--namespace)
      shift
      NAMESPACE=$1
      shift
      ;;
    -p|--pod)
      shift
      POD=$1
      shift
      ;;
    -c|--command)
      shift
      CMD=$1
      shift
      ;;
    -h|--help)
      print_usage
      exit 0
      ;;
    *)
      break
      ;;
  esac
done

if [[ "$POD" == "" ]]; then
  which fzf &>/dev/null || (
    echo "If no pod provided, fzf is required to select pods"
    echo ""
    print_usage
    exit 1
  )

  pod=($(kubectl get pods --all-namespaces -o wide | _fzf | awk '{print $1, $2}'))
  POD=${pod[1]}
  NAMESPACE=${pod[0]}
fi

echo kubectl exec -it --namespace $NAMESPACE $POD $CMD
kubectl exec -it --namespace $NAMESPACE $POD $CMD