.DEFAULT_GOAL:=help

COMPOSE_ALL_FILES := -f docker-compose.yml -f docker-compose.monitor.yml -f docker-compose.nodes.yml -f docker-compose.logs.yml
COMPOSE_MONITORING := -f docker-compose.yml -f docker-compose.monitor.yml
COMPOSE_LOGGING := -f docker-compose.yml -f docker-compose.logs.yml
COMPOSE_NODES := -f docker-compose.yml -f docker-compose.nodes.yml
ELK_SERVICES   := elasticsearch logstash kibana apm-server
ELK_LOG_COLLECTION := filebeat
ELK_MONITORING := elasticsearch-exporter logstash-exporter filebeat-cluster-logs
ELK_NODES := elasticsearch-1 elasticsearch-2
ELK_MAIN_SERVICES := ${ELK_SERVICES} ${ELK_MONITORING}
ELK_ALL_SERVICES := ${ELK_MAIN_SERVICES} ${ELK_NODES} ${ELK_LOG_COLLECTION}

compose_v2_not_supported = $(shell command docker compose 2> /dev/null)
ifeq (,$(compose_v2_not_supported))
  DOCKER_COMPOSE_COMMAND = docker-compose
else
  DOCKER_COMPOSE_COMMAND = docker compose
endif

# --------------------------
.PHONY: setup keystore certs all elk monitoring build down stop restart rm logs

keystore:		## Setup Elasticsearch Keystore, by initializing passwords, and add credentials defined in `keystore.sh`.
	$(DOCKER_COMPOSE_COMMAND) -f docker-compose.setup.yml run --rm keystore

certs:		    ## Generate Elasticsearch SSL Certs.
	$(DOCKER_COMPOSE_COMMAND) -f docker-compose.setup.yml run --rm certs

setup:		    ## Generate Elasticsearch SSL Certs and Keystore.
	@make certs
	@make keystore

all:		    ## Start Elk and all its component (ELK, Monitoring, and Tools).
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} up -d --build ${ELK_MAIN_SERVICES}

elk:		    ## Start ELK.
	$(DOCKER_COMPOSE_COMMAND) up -d --build

up:
	@make elk
	@echo "Visit Kibana: https://localhost:5601 (user: elastic, password: changeme) [Unless you changed values in .env]"

monitoring:		## Start ELK Monitoring.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_MONITORING} up -d --build ${ELK_MONITORING}

collect-docker-logs: 		## Start Filebeat that collects all Host Docker Logs and ship it to ELK
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_LOGGING} up -d --build ${ELK_LOG_COLLECTION}

nodes:		    ## Start Two Extra Elasticsearch Nodes
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_NODES} up -d --build ${ELK_NODES}

build:			## Build ELK and all its extra components.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} build ${ELK_ALL_SERVICES}
ps:				## Show all running containers.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} ps

down:			## Down ELK and all its extra components.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} down

stop:			## Stop ELK and all its extra components.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} stop ${ELK_ALL_SERVICES}
	
restart:		## Restart ELK and all its extra components.
	$(DOCKER_COMPOSE_COMMAND) ${COMPOSE_ALL_FILES} restart ${ELK_ALL_SERVICES}

rm:				## Remove ELK and all its extra components containers.
	$(DOCKER_COMPOSE_COMMAND) $(COMPOSE_ALL_FILES) rm -f ${ELK_ALL_SERVICES}

logs:			## Tail all logs with -n 1000.
	$(DOCKER_COMPOSE_COMMAND) $(COMPOSE_ALL_FILES) logs --follow --tail=1000 ${ELK_ALL_SERVICES}

images:			## Show all Images of ELK and all its extra components.
	$(DOCKER_COMPOSE_COMMAND) $(COMPOSE_ALL_FILES) images ${ELK_ALL_SERVICES}

prune:			## Remove ELK Containers and Delete ELK-related Volume Data (the elastic_elasticsearch-data volume)
	@make stop && make rm
	@docker volume prune -f --filter label=com.docker.compose.project=elastic

help:       	## Show this help.
	@echo "Make Application Docker Images and Containers using Docker-Compose files in 'docker' Dir."
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m (default: help)\n\nTargets:\n"} /^[a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-12s\033[0m %s\n", $$1, $$2 }' $(MAKEFILE_LIST)