kgg

#!/bin/bash

set -eu
set -o pipefail

help() {
    cat <<EOT
Gets the full name of pods filtered by a pattern or interactively picked. If
multiple results are found then interactive use is forced.

OPTIONS
  -h|--help
    This help
  [-g|--grep] pattern ...
    Only include results matching <pattern>.
    If multiple patterns are given, all must match.
  -i|--ignore pattern ...
    Exclude results matching <pattern>.
  -n|--namespace namespace
    Limit to the given namespace, otherwise checks all.
  -p|--percol ...
    Interactively filter the resources with Percol.
  -k|--kind kind ...
    Search for something other than pods.
EOT
}

PASS=()
KIND="pods"
NS=""
while (( ${#*} > 0 )); do
    case $1 in
        -h|--help)
            help
            exit;;
        -k|--kind)
            shift; KIND="$1"
            shift;;
        -n|--namespace)
            shift; NS="$1"
            shift;;
        *)
            PASS+=("$1")
            shift;;
    esac
done

if [ -z "$NS" ]; then
  NS_FLAG="-A"
else
  NS_FLAG="-n $NS"
fi

PICKED=$(kubectl get $NS_FLAG $KIND | pick --skip-header-line "${PASS[@]}")
while true; do
  # echo "PICKED $PICKED"
  NUM_PICKED=$(wc -l <<<"$PICKED")
  case "$NUM_PICKED" in
    0)
      echo "0 results" >&2
      exit;;
    1)
      if [ -z "$NS" ]; then
        awk '{print "-n " $1 " " $2}' <<<"$PICKED"
      else
        awk '{print "'"$NS_FLAG"' " $1}' <<<"$PICKED"
      fi
      exit;;
    *)
      PICKED=$(pick --percol <<<"$PICKED");;
  esac
done