Get current GCP project name / Kubernetes context which you are on.

gcp-context

#!/bin/bash

if ! type jq &>/dev/null; then
    echo "jq: not found" >&2
    exit 1
fi

if ! type gcloud &>/dev/null; then
    echo "gcloud: not found" >&2
    exit 1
fi

gcloud config configurations list --format='json' \
    | jq -r '.[] | select(.is_active==true) | .properties.core.project'

kube-context

#!/bin/bash

while (( ${#} > 0 ))
do
  case "${1}" in
    --context)
      context="${2}"
      shift
      shift
      ;;
    --context=*)
      context="${1#*=}"
      shift
      ;;
  esac
done

if ! type kubectl &>/dev/null; then
  echo "kubectl command not found" >&2
  exit 1
fi

if ! context="$(kubectl config current-context 2>/dev/null)"; then
  echo "NaN"
  exit 0
fi

namespace="$(kubectl config view -o "jsonpath={.contexts[?(@.name==\"${context}\")].context.namespace}")"
if [[ -z "${namespace}" ]]; then
  namespace="default"
fi

regions=(
  asia-northeast1-a
  asia-northeast1-b
  asia-northeast1-c
  asia-east1-a
  asia-east1-b
  asia-east1-c
)

for region in "${regions[@]}"
do
  context=${context%_${region}*}
done

echo "${context}/${namespace}"