GOPATH ?= `$(pwd)`

JSONNET_BIN := $(GOPATH)/bin/jsonnet
JB_BINARY := $(GOPATH)/bin/jb

JSONNET_FMT := $(GOPATH)/bin/jsonnetfmt -n 2 --max-blank-lines 2 --string-style s --comment-style s

.PHONY: generate vendor fmt manifests help

all: manifests       ## Builds the  manifests

help:	# Show help
	@echo "Makefile targets:"
	@echo ""
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

manifests: $(JSONNET_BIN)       ## Builds the  manifests
	rm -rf manifests
	./scripts/build.sh main.jsonnet $(JSONNET_BIN)

update_libs: $(JB_BINARY)       ## Updates vendor libs. Require a regeneration of the manifests
	$(JB_BINARY) update

vendor: $(JB_BINARY) jsonnetfile.json jsonnetfile.lock.json       ## Download vendor libs
	rm -rf vendor
	$(JB_BINARY) install

fmt:       ## Formats all jsonnet and libsonnet files (except on vendor dir)
	@echo "Formatting jsonnet files"
	@find . -name 'vendor' -prune -o -name '*.libsonnet' -o -name '*.jsonnet' -print | xargs -n 1 -- $(JSONNET_FMT) -i

deploy: manifests       ## Rebuilds manifests and deploy to configured cluster
	kubectl apply -f ./manifests/
	echo "Will wait 40 seconds to reapply manifests"
	sleep 40
	kubectl apply -f ./manifests/

teardown:       ## Delete all monitoring stack resources from configured cluster
	kubectl delete -f ./manifests/

tar: manifests       ## Generates a .tar.gz from manifests dir
	rm -rf manifests.tar.gz
	tar -cfz manifests.tar.gz manifests

$(JB_BINARY):       ## Installs jsonnet-bundler utility
	@echo "Installing jsonnet-bundler"
	@go get -u github.com/jsonnet-bundler/jsonnet-bundler/cmd/jb

$(JSONNET_BIN):       ## Installs jsonnet and jsonnetfmt utility
	@echo "Installing jsonnet"
	@go get -u github.com/google/go-jsonnet/cmd/jsonnet
	@go get -u github.com/google/go-jsonnet/cmd/jsonnetfmt
	@go get -u github.com/brancz/gojsontoyaml

update_tools:       ## Updates jsonnet, jsonnetfmt and jb utilities
	@echo "Updating jsonnet"
	@go get -u github.com/google/go-jsonnet/cmd/jsonnet
	@go get -u github.com/google/go-jsonnet/cmd/jsonnetfmt
	@go get -u github.com/brancz/gojsontoyaml
	@go get -u github.com/jsonnet-bundler/jsonnet-bundler/cmd/jb

change_suffix:       ## Changes suffix for the ingress
	@perl -p -i -e 's/^(\s*)\-\ host:.*/\1- host: alertmanager.${IP}.nip.io/g' manifests/ingress-alertmanager.yaml manifests/ingress-prometheus.yaml manifests/ingress-grafana.yaml
	@echo "Ingress IPs changed to [service].${IP}.nip.io"
	${K3S} kubectl apply -f manifests/ingress-alertmanager.yaml
	${K3S} kubectl apply -f manifests/ingress-grafana.yaml
	${K3S} kubectl apply -f manifests/ingress-prometheus.yaml