#!/bin/bash

########################################################################

# Run this script in an ITK external module directory to generate

# build artifacts for prerequisite ITK MacOS modules.

#

# Module dependencies are built in a flat directory structure regardless

# of recursive dependencies. Prerequisite sources are required to be passed

# in the order in which they should be built.

# For example, if ITKTargetModule depends on ITKTargetModuleDep2 which

# depends on ITKTargetModuleDep1, the output directory structure

# will look like this:

#

# / ITKTargetModule

# -- / ITKTargetModuleDep1

# -- / ITKTargetModuleDep2

# ..

#

# ===========================================

# ENVIRONMENT VARIABLES

#

# - `ITK_MODULE_PREQ`: Prerequisite ITK modules that must be built before the requested module.

# Format is `<org_name>/<module_name>@<module_tag>:<org_name>/<module_name>@<module_tag>:...`.

# For instance, `export ITK_MODULE_PREQ=InsightSoftwareConsortium/ITKMeshToPolyData@v0.10.0`

#

########################################################################

script_dir=$(cd $(dirname $0) || exit 1; pwd)

if [[ ! -f "${script_dir}/macpython-download-cache-and-build-module-wheels.sh" ]]; then

echo "Could not find download script to use for building module dependencies!"

exit 1

fi

# Temporarily update prerequisite environment variable to prevent infinite recursion.

ITK_MODULE_PREQ_TOPLEVEL=${ITK_MODULE_PREQ}

ITK_USE_LOCAL_PYTHON_TOPLEVEL=${ITK_USE_LOCAL_PYTHON}

export ITK_MODULE_PREQ=""

export ITK_USE_LOCAL_PYTHON="ON"

########################################################################

echo "Building ITK module dependencies: ${ITK_MODULE_PREQ_TOPLEVEL}"

for MODULE_INFO in ${ITK_MODULE_PREQ_TOPLEVEL//:/ }; do

MODULE_ORG=`(echo ${MODULE_INFO} | cut -d'/' -f 1)`

MODULE_NAME=`(echo ${MODULE_INFO} | cut -d'@' -f 1 | cut -d'/' -f 2)`

MODULE_TAG=`(echo ${MODULE_INFO} | cut -d'@' -f 2)`

MODULE_UPSTREAM=https://github.com/${MODULE_ORG}/${MODULE_NAME}.git

echo "Cloning from ${MODULE_UPSTREAM}"

git clone ${MODULE_UPSTREAM}

pushd ${MODULE_NAME}

git checkout ${MODULE_TAG}

cp ${script_dir}/macpython-download-cache-and-build-module-wheels.sh .

echo "Building dependency ${MODULE_NAME}"

./macpython-download-cache-and-build-module-wheels.sh $@

popd

cp ./${MODULE_NAME}/include/* include/

find ${MODULE_NAME}/wrapping -name '*.in' -print -exec cp {} wrapping \;

find ${MODULE_NAME}/wrapping -name '*.init' -print -exec cp {} wrapping \;

find ${MODULE_NAME}/*build/*/include -type f -print -exec cp {} include \;

rm -f ./${MODULE_NAME}/ITKPythonBuilds-macosx.tar.zst

done

# Restore environment variable

export ITK_MODULE_PREQ=${ITK_MODULE_PREQ_TOPLEVEL}

export ITK_USE_LOCAL_PYTHON=${ITK_USE_LOCAL_PYTHON_TOPLEVEL}

ITK_MODULE_PREQ_TOPLEVEL=""

ITK_USE_LOCAL_PYTHON_TOPLEVEL=""

# Summarize disk usage for debugging

du -sh ./* | sort -hr | head -n 20

echo "Done building ITK external module dependencies"