# Copyright 2019 AT&T Intellectual Property.  All other rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# It's necessary to set this because some environments don't link sh -> bash.
SHELL := /bin/bash

# APP INFO
DOCKER_REGISTRY   ?= quay.io
IMAGE_PREFIX      ?= airshipit
IMAGE_NAME        ?= $@
IMAGE_TAG         ?= latest
BUILD_DIR         := $(shell mktemp -d)
HELM              ?= $(BUILD_DIR)/helm
CHARTS            := $(filter-out deps, $(patsubst charts/%/.,%,$(wildcard charts/*/.)))
IMAGES            := $(addprefix porthole-,$(patsubst images/%/.,%,$(wildcard images/*/.)))
PROXY             ?= http://proxy.foo.com:8000
NO_PROXY          ?= localhost,127.0.0.1,.svc.cluster.local
USE_PROXY         ?= false
PUSH_IMAGE        ?= false
# use this variable for image labels added in internal build process
LABEL             ?= org.airshipit.build=community
COMMIT            ?= $(shell git rev-parse HEAD)
DISTRO_SUFFIX     ?= $(DISTRO)
IMAGE              = $(DOCKER_REGISTRY)/$(IMAGE_PREFIX)/$(IMAGE_NAME):$(IMAGE_TAG)$(IMAGE_TAG_SUFFIX)
BASE_IMAGE        ?=
DISTRO            ?= ubuntu_focal

# TODO(roman_g): DISTRO_SUFFIX should be autogenerated
# from Dockerfile extensions, see $(suffix ) Makefile function
ifeq "$(DISTRO_SUFFIX)" ""
	# We expect that container is named 'porthole-xxxxx', and
	# subdirectory is named 'xxxxx'; so we cut 'porthole-' from
	# directory names here below and in next statement
	DOCKERFILE = images/$(subst porthole-,,$(IMAGE_NAME))/Dockerfile
else
	DOCKERFILE = images/$(subst porthole-,,$(IMAGE_NAME))/Dockerfile.$(DISTRO_SUFFIX)
	IMAGE_TAG_SUFFIX = -$(DISTRO_SUFFIX)
endif

# VERSION INFO
GIT_COMMIT = $(COMMIT)
GIT_SHA    = $(shell git rev-parse --short HEAD)
GIT_TAG    = $(shell git describe --tags --abbrev=0 --exact-match 2>/dev/null)
GIT_DIRTY  = $(shell test -n "$$(git status --porcelain)" && echo "dirty" || echo "clean")

HELM_PIDFILE ?= $(abspath ./.helm-pid)

ifdef VERSION
	DOCKER_VERSION = $(VERSION)
endif

info:
	@echo "Version:           $(VERSION)"
	@echo "Git Tag:           $(GIT_TAG)"
	@echo "Git Commit:        $(GIT_COMMIT)"
	@echo "Git Tree State:    $(GIT_DIRTY)"
	@echo "Docker Version:    $(DOCKER_VERSION)"
	@echo "Registry:          $(DOCKER_REGISTRY)"

# TODO(roman_g): currently does not include images, but eventually it should
all: lint charts
	@echo -e "\n---\nAnd what is there's nothing in there? You die, and " \
             "there's nothing beyond that. Nothing. Nothing remains. Someone " \
             "might remember you for a little while after but not for long.\n"

check-docker:
	@if [ -z $$(which docker) ]; then \
		echo "Missing \`docker\` client which is required for development"; \
		exit 2; \
	fi

dry-run: clean $(addprefix dry-run-,$(CHARTS))

dry-run-%: helm-lint-%
	echo Running Dry-Run on chart $*
	cd charts; $(HELM) template --set pod.resources.enabled=true $*

charts: $(CHARTS)
	@echo "Done building charts."

$(CHARTS): $(addprefix dry-run-,$(CHARTS)) chartbanner
	$(HELM) package -d charts charts/$@

chartbanner:
	@echo "Building charts: $(CHARTS)"

lint: helm-lint

helm-lint: $(addprefix helm-lint-,$(CHARTS))

helm-lint-%: helm-toolkit
	set -x
	@echo "Initializing chart $*"
	$(HELM) dep up charts/$*
	@echo "Linting chart $*"
	$(HELM) lint charts/$*



helm-toolkit: helm-install
	./tools/helm_tk.sh $(HELM)

# Install helm binary
helm-install:
	tools/helm_install.sh $(HELM)

dry-run:

docs:
	@echo "Not implemented." >&2; exit 2

clean:
	rm -rf build
	rm -f charts/*.tgz
	rm -f charts/*/requirements.lock
	rm -rf charts/*/charts
	rm -rf charts/deps/*
	rm -rf .tox
	rm -rf cover

run_images:
	@echo "Not implemented." >&2; exit 2

run_$(IMAGE_NAME):
	@echo "Not implemented." >&2; exit 2

unit_tests:
	@echo "Run Unit Validation Testing"
	./tools/run_avt.sh unit_tests

feature_tests:
	@echo "Run Feature Validation Testing"
	./tools/run_avt.sh feature_tests


format:
	@echo "Not implemented." >&2; exit 2

images: $(IMAGES)
	@echo "Done building images."

$(IMAGES):
	@echo
	@echo "===== Processing [$@] image  ====="
	@make build IMAGE_NAME=$(IMAGE_NAME) DOCKERFILE=$(DOCKERFILE)

_BASE_IMAGE_ARG := $(if $(BASE_IMAGE),--build-arg FROM="${BASE_IMAGE}" ,)

build:
	@echo "Building $(IMAGE_NAME)..."
ifeq ($(USE_PROXY), true)
	docker build --network host -t $(IMAGE) --label $(LABEL) \
		--no-cache \
		--label "org.opencontainers.image.revision=$(COMMIT)" \
		--label "org.opencontainers.image.created=$(shell date --rfc-3339=seconds --utc)" \
		--label "org.opencontainers.image.title=$(IMAGE_NAME)" \
		-f $(DOCKERFILE) \
		$(EXTRA_BUILD_ARGS) \
		$(_BASE_IMAGE_ARG) \
		--build-arg http_proxy=$(PROXY) \
		--build-arg https_proxy=$(PROXY) \
		--build-arg HTTP_PROXY=$(PROXY) \
		--build-arg HTTPS_PROXY=$(PROXY) \
		--build-arg no_proxy=$(NO_PROXY) \
		--build-arg NO_PROXY=$(NO_PROXY) images/$(subst porthole-,,$(IMAGE_NAME))/
else
	docker build --network host -t $(IMAGE) --label $(LABEL) \
		--no-cache \
		--label "org.opencontainers.image.revision=$(COMMIT)" \
		--label "org.opencontainers.image.created=$(shell date --rfc-3339=seconds --utc)" \
		--label "org.opencontainers.image.title=$(IMAGE_NAME)" \
		-f $(DOCKERFILE) \
		$(EXTRA_BUILD_ARGS) \
		$(_BASE_IMAGE_ARG) images/$(subst porthole-,,$(IMAGE_NAME))/
endif
ifeq ($(PUSH_IMAGE), true)
	docker push $(IMAGE)
endif

.PHONY: $(CHARTS) $(IMAGES) all build chartbanner charts check-docker clean \
        docs dry-run-% dry-run format helm-init-% helm-install helm-lint-% \
        helm-lint helm-serve images info lint run_$(IMAGE_NAME) run_images