#
# Licensed to Cloudera, Inc. under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  Cloudera, Inc. licenses this file
# to you 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
#
#     http://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.
#

#
# A Makefile to be (optionally) included by any SDK applications.
#
# This Makefile assumes the following environment variables:
#   ROOT
#   	Points to the root of the Hue installation. From here, we
#   	can include $(ROOT)/Makefile.vars to access various variables.
#
# This Makefile (or any custom application Makefile) MUST provide the following
# targets:
#   egg-info
#   	Responsible for creating the egg-info directory for the application.
#
#   ext-eggs
#   	Responsible for creating a Python egg for each external Python
#   	dependency. These eggs should be placed in the
#   	$(APP_ROOT)/ext-py/<package>/dist directory.
#
#   clean
#   	Remove build products.
#
#   sdist
#   	Responsible for making a source distribution directory at
#   	$(APP_ROOT)/build/sdist/$(APP_NAME).
#
#   install-bdist
#   	Responsible for installing a built distribution to a target directory,
#   	as specified by $(INSTALL_DIR).
#

include $(ROOT)/Makefile.vars

SETUPTOOLS_NAME = $(shell $(ENV_PYTHON) setup.py --name)

APP_ROOT := $(realpath .)
APP_NAME ?= $(SETUPTOOLS_NAME)
APP_VERSION ?= $(shell $(ENV_PYTHON) setup.py --version)
APP_FULL_NAME ?= $(APP_NAME)-$(APP_VERSION)
RSYNC_OPT ?= --copy-unsafe-links -a
PYBABEL := $(ROOT)/build/env/bin/pybabel
LOCALE_ROOT := $(APP_ROOT)/src/$(APP_NAME)/locale

BUILD_DIR := $(APP_ROOT)/build
EGG_INFO_DIR := $(APP_ROOT)/src/$(SETUPTOOLS_NAME).egg-info

.PHONY: default
default::
	@echo 'The build targets for $(APP_NAME) are: (*) is required'
	@echo '  compile        : Compile $(APP_NAME)'
	@echo '  egg-info *     : Create a python egg for $(APP_NAME)'
	@echo '  ext-eggs *     : Create python eggs for external dependencies'
	@echo '  sdist *        : Create a source distribution tree and tarball'
	@echo '  bdist          : Create a built distribution tree'
	@echo '  install-bdist *: Install a built distribution to a target location'
	@echo '  ext-env-install: Install external dependencies into virtual-env'
	@echo '  ext-clean      : Clean external dependencies'
	@echo '  clean *        : Clean $(APP_NAME). Requires ext-clean'
	@echo '  distclean      : Dist clean $(APP_NAME). Requires clean'

.PHONY: egg
egg-info: compile $(EGG_INFO_DIR)

$(EGG_INFO_DIR): $(APP_ROOT)/setup.py
	@echo '--- Making egg-info for $(APP_NAME)'
	@$(ENV_PYTHON) setup.py -q egg_info


# Hook to allow extra build steps (eg java builds)
.PHONY: compile
compile:


##############################
# The following installs the external Python dependencies under the ext-py/
# directory.

EXT_PY_DIRS := $(wildcard ext-py/*)
EXT_PYS := $(notdir $(EXT_PY_DIRS))

ext_py_stamp = $(BUILD_DIR)/$(1)/$(2).stamp


##############################
# Macros
##############################
EXT_PY_EGG_TARGETS := $(EXT_PYS:%=$(call ext_py_stamp,%,egg))
EXT_PY_CLEAN_TARGETS := $(EXT_PYS:%=$(call ext_py_stamp,%,clean))
EXT_PY_ENV_INSTALL_TARGETS := $(EXT_PYS:%=$(call ext_py_stamp,%,env-install))

$(EXT_PY_EGG_TARGETS): CUR_EXT_PY=$(notdir $(@D))
$(EXT_PY_CLEAN_TARGETS): CUR_EXT_PY=$(notdir $(@D))
$(EXT_PY_ENV_INSTALL_TARGETS): CUR_EXT_PY=$(notdir $(@D))

#
# ext-eggs
#   	Builds a binary egg for any 3rd party package that are based on the
#   	earlier distutils (rather than setuptools).
#
.PHONY: ext-eggs
ext-eggs: $(EXT_PY_EGG_TARGETS)
$(EXT_PY_EGG_TARGETS):
	@echo '--- Building egg for $(CUR_EXT_PY)'
	@cd ext-py/$(CUR_EXT_PY) && $(ENV_PYTHON) \
	  -c '__import__("setuptools.sandbox").sandbox.run_setup("setup.py", __import__("sys").argv[1:])' \
	  bdist_egg
	@mkdir -p $(@D) && touch $@

#
# ext-clean
# 	Clean the 3rd party package. This will NOT uninstall it from Desktop.
#
.PHONY: ext-clean
ext-clean: $(EXT_PY_CLEAN_TARGETS)
$(EXT_PY_CLEAN_TARGETS):
	@echo '--- Cleaning $(CUR_EXT_PY)'
	@rm -Rf $(BUILD_DIR)/$(CUR_EXT_PY)
	@cd ext-py/$(CUR_EXT_PY) && rm -Rf dist build temp *.egg-info
	@find ext-py/$(CUR_EXT_PY) -name \*.egg-info -o -name \*.py[co] -prune -exec rm -Rf {} \;

#
# ext-env-install
# 	Install all 3rd party packages into the Desktop environment. Used by
# 	desktop core. We look for egg files in two locations:
# 	(1) ext-py/<pkg>/dist/*.egg
# 	(2) ext-eggs/*.egg
#
.PHONY: ext-env-install
ext-env-install: ext-eggs $(EXT_PY_ENV_INSTALL_TARGETS)
	@for i in $(wildcard ext-eggs/*.egg) ; do \
	  echo "--- Installing $$i into virtual environment" ; \
	  $(ENV_EASY_INSTALL) -Z -N $$i 2> /dev/null ; \
	done

$(EXT_PY_ENV_INSTALL_TARGETS):
	@echo '--- Installing $(CUR_EXT_PY) into virtual environment'
	@# If there are no binary eggs, maybe this package decided
	@# it wasn't necessary.  If the build had failed, the command that produced
	@# the egg should have thrown an error.
	@cd ext-py/$(CUR_EXT_PY) && [ ! -e dist ] || $(ENV_EASY_INSTALL) -Z -N dist/*egg 2>/dev/null
	@mkdir -p $(@D) && touch $@

.PHONY: clean
clean:: ext-clean
	@echo --- Cleaning $(APP_NAME)
	@# Use SYS_PYTHON because ENV_PYTHON may not be available.
	@$(SYS_PYTHON) setup.py clean || :
	@rm -Rf $(BUILD_DIR) dist
	@find . -name \*.egg-info -prune -exec rm -Rf {} \;
	@find . -name \*.py[co] -exec rm -f {} \;

.PHONY: distclean
distclean:: clean

.PHONY: compile-locale
compile-locale:
	$(PYBABEL) extract . -F babel.cfg -k _ -k _t -o $(LOCALE_ROOT)/en_US.pot --copyright-holder="Cloudera, Inc" --project="Hue" --version=""
	$(PYBABEL) update -D django -i $(LOCALE_ROOT)/en_US.pot -d $(LOCALE_ROOT)
	$(PYBABEL) compile -D django -d $(LOCALE_ROOT)


#####################################
# Distribution builds
#####################################

# Items that should not be included in the source/built distribution.
# Apps can list this in their own Makefile before including this file
# in order to exclude their own sources, non-distributables, etc.
# This list is rsync friendly.
COMMON_EXCLUDES := \
	  --exclude=build \
	  --exclude=\*.py[co] \
	  --exclude=.\*.sw[op] \
	  --exclude=~\* \
	  --exclude=.gitignore \
	  --exclude=tag \
	  --exclude=target


SDIST_EXCLUDES += $(COMMON_EXCLUDES) --exclude=java-lib
BDIST_EXCLUDES += $(COMMON_EXCLUDES) --exclude=ext-py

SDIST_DIR := $(BUILD_DIR)/sdist/$(APP_FULL_NAME)
BDIST_DIR := $(BUILD_DIR)/bdist/$(APP_FULL_NAME)
SDIST_TGZ := $(BUILD_DIR)/sdist/$(APP_FULL_NAME).tgz

#
# sdist
# 	Simply copy the essential sources to the target directory.
#
.PHONY: sdist
sdist:
	@echo '--- Making source distribution at $(SDIST_DIR)'
	@rm -rf $(SDIST_DIR)
	@mkdir -p $(SDIST_DIR)
	@# Copy sources of our app
	@rsync $(RSYNC_OPT) ./ $(SDIST_DIR)/ $(SDIST_EXCLUDES)
	@$(MAKE) -C $(SDIST_DIR) clean
	@# Also make a tarball
	@tar -C $(SDIST_DIR)/.. -czf $(SDIST_TGZ) $(APP_FULL_NAME)
	@echo "--- Created $(SDIST_TGZ)"

#
# bdist
# 	Like sdist. For ext-py, we copy the eggs only (into a separate ext-eggs
# 	directory). Apps with non-python source (e.g. Java, C) should also
# 	exclude the source files.
#
.PHONY: bdist
bdist: ext-eggs compile
	@echo '--- Making built distribution at $(BDIST_DIR)'
	@rm -rf $(BDIST_DIR)
	@mkdir -p $(BDIST_DIR)
	@# Copy built sources of our app
	@rsync $(RSYNC_OPT) ./ $(BDIST_DIR)/ $(BDIST_EXCLUDES)
	@# Copy thirdparty eggs into the ext-eggs dir
	@mkdir -p $(BDIST_DIR)/ext-eggs
	@if test -n '$(wildcard ext-py/*/dist)' ; then \
	  find ext-py/*/dist -type f -name '*.egg' -exec cp {} $(BDIST_DIR)/ext-eggs \; ; \
	fi

#
# install-bdist
# 	Install the built distribution in $(INSTALL_DIR).
# 	NOTE that this does NOT install the app into the virtual environment.
#
.PHONY: install-bdist
install-bdist: bdist
	@echo "--- Install built distribution for $(APP_NAME) at $(INSTALL_DIR)"
	@# Check that INSTALL_DIR is empty
	@if [ -n '$(wildcard $(INSTALL_DIR)/*)' ] ; then \
	  echo 'ERROR: $(INSTALL_DIR) not empty. Cowardly refusing to continue.' ; \
	  false ; \
	fi
	@mkdir -p $(INSTALL_DIR)
	@rsync -a $(BDIST_DIR)/ $(INSTALL_DIR)