##
# Makefile to help manage docker-compose services
#

 # Include environment files
 include .env
 export

# Variables
THIS_FILE := $(lastword $(MAKEFILE_LIST))
DOCKER         := $(shell which docker)
DOCKER_COMPOSE := $(shell which docker-compose)

IMAGE_DEFAULT := web
CONTAINER_DEFAULT := web

SHELL_CMD := /bin/bash

# Docker compose files
DOCKER_COMPOSE_FILES := -f docker-compose.yml
ifeq ($(DOCKER_ENV),local)
	DOCKER_COMPOSE_FILES := -f docker-compose.yml
endif
ifeq ($(DOCKER_ENV),production)
	DOCKER_COMPOSE_FILES := -f docker-compose.yml
endif

# Services
SERVICES_DEFAULT := bot web
ifeq ($(DOCKER_ENV),local)
	SERVICES_DEFAULT := bot web
endif
ifeq ($(DOCKER_ENV),production)
	SERVICES_DEFAULT := bot web
endif
SERVICE_DEFAULT := bot

container ?= $(CONTAINER_DEFAULT)
image ?= $(IMAGE_DEFAULT)
service   ?=
services  ?= $(SERVICES_DEFAULT)

.DEFAULT_GOAL := help


##
# help
#
help:
ifeq ($(CONTAINER_DEFAULT),)
	$(warning WARNING: CONTAINER_DEFAULT is not set. Please edit makefile)
endif
	@echo
	@echo "Make targets:"
	@echo
	@cat $(THIS_FILE) | \
	sed -n -E 's/^([^.][^: ]+)\s*:(([^=#]*##\s*(.*[^[:space:]])\s*)|[^=].*)$$/   \1	\4/p' | \
	sort -u | \
	expand -t15
	@echo
	@echo
	@echo "Target arguments:"
	@echo
	@echo "  " "service"  "\t" "Target service for docker-compose actions (default=all-services)"
	@echo "  " "       "  "\t" "  - make start"
	@echo "  " "       "  "\t" "  - make start service=app"
	@echo "  " "services" "\t" "Target services for docker-compose actions (default=all-services, space separated)"
	@echo "  " "       "  "\t" "  - make stop services='app db'"
	@echo "  " "container""\t" "Target container for docker actions (default='$(CONTAINER_DEFAULT)')"
	@echo "  " "       "  "\t" "  - make bash container=$(container)"
	@echo "  " "image" "\t" "Target image for interactive shell (default='$(IMAGE_DEFAULT)')"
	@echo "  " "       "  "\t" "  - make it image=$(image)"


##
# services
#
services: ## Lists services
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) ps --services


##
# start
#
all: dev  ## See 'dev'
start: dev  ## See 'dev'
dev:  ## Start containers for development [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) up -d $(services)
	$(MAKE) logs


##
# stop
#
stop:  ## Stop containers [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) stop $(services)


##
# restart
#
restart:  ## Restart containers [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) restart $(services)


##
# down
#
down:  ## Removes containers (preserves images and volumes)
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) down


##
# build
#
build:  ## Builds service images [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) build --build-arg DOCKER_ENV=${DOCKER_ENV} $(services)


##
# rebuild
#
rebuild:  ## Build containers without cache [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) build --build-arg DOCKER_ENV=${DOCKER_ENV} --no-cache $(services)


##
# ps
#
status: ps  ## See 'ps'
ps:  ## Show status of containers [service|services]
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) ps $(services)


##
# interact
#
interact: it  ## See `it'
it:  ## Run a new container in interactive mode. Needs image name [image]
ifeq ($(image),)
	$(error ERROR: 'image' is not set. Please provide 'image=' argument or edit makefile and set CONTAINER_DEFAULT)
endif
	@echo
	@echo "Starting interactive shell ($(SHELL_CMD)) in image container '$(image)'"
	@$(DOCKER) run -it  --entrypoint "$(SHELL_CMD)" $(image)


##
# bash
#
sh: bash  ## See 'bash'
shell: bash  ## See 'bash'
bash:  ## Brings up a shell in default (or specified) container [container]
ifeq ($(container),)
	$(error ERROR: 'container' is not set. Please provide 'container=' argument or edit makefile and set CONTAINER_DEFAULT)
endif
	@echo
	@echo "Starting shell ($(SHELL_CMD)) in container '$(container)'"
	@$(DOCKER) exec -it "$(container)" "$(SHELL_CMD)"


##
# attach
#
at: attach  ## See 'attach'
attach:  ## Attach to a running container [container]
ifeq ($(container),)
	$(error ERROR: 'container' is not set. Please provide 'container=' argument or edit makefile and set CONTAINER_DEFAULT)
endif
	@echo
	@echo "Attaching to '$(container)'"
	@$(DOCKER) attach $(container)


##
# log
#
log:  ## Shows log from a specific container (in 'follow' mode) [container]
ifeq ($(container),)
	$(error ERROR: 'container' is not set. Please provide 'container=' argument or edit makefile and set CONTAINER_DEFAULT)
endif
	@echo
	@echo "Log in $(container)"
	 @$(DOCKER) logs -f $(container)


##
# logs
#
logs:  ## Shows output of running containers (in 'follow' mode) [service|services]
	@echo
	@echo "Logs in $(services)"
	 @$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) logs -f $(services)


##
# rmimages
#
rmimages:  ## Remove images
	@echo
	@echo "Remove local images"
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) down --rmi local


##
# clean
#
clean:  ## Remove containers, images and volumes
	@echo
	@echo "Remove containers, images and volumes"
	@$(DOCKER_COMPOSE) $(DOCKER_COMPOSE_FILES) down --volumes --rmi all



%:
	@:


.PHONY: %