MANDATORY = $(shell printenv MANDATORY) K8S_CONTEXT HELM_CHART_NAME HELM_CHART_PATH HELM_VALUES_FILE K8S_NAMESPACE
# helm
#
# deploys helm charts on k8s via helm
#
start-helm:
	@- echo "\n### starting deployment with helm"
	@- echo "\n### setting kubernetes context to $(K8S_CONTEXT)"
	@ kubectl config use-context $(K8S_CONTEXT)

ifdef TEST_MODE
	@- echo "Testing chart with 'helm template --debug'"
	@ envsubst < ${HELM_VALUES_FILE} | helm template ${HELM_CHART_NAME} ${HELM_CHART_PATH} --debug --values -
endif

ifdef NAMESPACE
	@ $(eval K8S_NAMESPACE = $(NAMESPACE))
endif

ifdef HELM_REPO_URL
	@- echo "Helm Repo: $(HELM_REPO_URL)"
	@ helm repo add $(HELM_CHART_NAME) $(HELM_REPO_URL)
	@- helm repo update $(HELM_CHART_NAME)
endif

	@ $(eval helm_params = $(HELM_CHART_NAME) $(HELM_CHART_PATH) -n $(K8S_NAMESPACE) --install --wait --values)
ifdef DEBUG_MODE
	@ $(eval helm_params = $(helm_params) --debug)
endif
ifdef K8S_KUBECONFIG
	@ $(eval helm_params = $(helm_params) --kubeconfig $(K8S_KUBECONFIG))
endif
	@ $(eval helm_params = $(helm_params) - --version $(HELM_CHART_VERSION))

	@- echo "\n### deploying helm chart"
	@- echo "-- DEPLOYMENT --------------------"
	@- echo " "
	@- echo "Namespace: $(K8S_NAMESPACE)"
	@- echo "Helm Chart: $(HELM_CHART_PATH)"
	@- echo "Helm Version (use latest if empty): $(HELM_CHART_VERSION)"
	@- echo "Values File: $(HELM_VALUES_FILE)"
	@- echo " "
	@- echo "----------------------------------"

	envsubst < $(HELM_VALUES_FILE) | helm upgrade $(helm_params)

pull-helm:
# nop