#!/bin/bash

# Auxiliary script for semi-automated building of OCCT for iOS platform.
# Script should be placed into root of OCCT repository, edited with paths
# to CMake and 3rd-parties.
# https://dev.opencascade.org/

# FreeType should be specified as mandatory dependency
# (should be manually build or taken from earlier builds).
# https://www.opencascade.com/content/3rd-party-components

# CMake toolchain definition should be cloned from the following git repository: 
# https://github.com/leetal/ios-cmake 

# CMake can be downloaded from official site:
# https://cmake.org/download/

# go to the script directory
aScriptPath=${BASH_SOURCE%/*}
if [ -d "$aScriptPath" ]; then cd "$aScriptPath"; fi
aScriptPath="$PWD"

aCasSrc=$aScriptPath
aNbJobs="$(getconf _NPROCESSORS_ONLN)"

PATH=/Applications/CMake.app/Contents/bin:$PATH

aToolchain=$HOME/Develop/3rdparty-ios/ios-cmake.git/ios.toolchain.cmake

# paths to pre-built 3rd-parties
aFreeType=$HOME/Develop/3rdparty-ios/freetype-2.7.1-ios

# build stages to perform
toSimulator=0
toCMake=1
toClean=1
toMake=1
toInstall=1
toPack=1

export MACOSX_DEPLOYMENT_TARGET=
export IPHONEOS_DEPLOYMENT_TARGET=8.0

anAbi=arm64
aPlatform=OS
aPlatformAndCompiler=ios-$anAbi-clang
if [[ $toSimulator == 1 ]]; then
  anAbi=x86_64
  aPlatform=SIMULATOR64 
  aPlatformAndCompiler=ios-simulator64-clang
fi
aWorkDir=work/${aPlatformAndCompiler}-make
aDestDir=$aCasSrc/work/$aPlatformAndCompiler
aLogFile=$aCasSrc/build-${aPlatformAndCompiler}.log

# include some information about OCCT into archive
echo \<pre\>> VERSION.html
git status >> VERSION.html
git log -n 100 >> VERSION.html
echo \</pre\>>> VERSION.html

mkdir -p $aWorkDir
rm    -f $aLogFile

pushd $aWorkDir

aTimeZERO=$SECONDS
set -o pipefail

function logDuration {
  if [[ $1 == 1 ]]; then
    aDur=$(($4 - $3))
    echo $2 time: $aDur sec>> $aLogFile
  fi
}

# (re)generate Make files
if [[ $toCMake == 1 ]]; then
  echo Configuring OCCT for iOS...
  cmake -G "Unix Makefiles" \
  -D CMAKE_TOOLCHAIN_FILE:FILEPATH="$aToolchain" \
  -D IOS_PLATFORM :STRING="$aPlatform" \
  -D IOS_ARCH:STRING ="$anAbi" \
  -D  IOS_DEPLOYMENT_TARGET :STRING ="$IPHONEOS_DEPLOYMENT_TARGET" \
  -D  CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS :BOOL="OFF" \
  -D  CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS :BOOL="OFF" \
  -D CMAKE_BUILD_TYPE:STRING="Release" \
  -D BUILD_LIBRARY_TYPE:STRING="Static" \
  -D INSTALL_DIR:PATH="$aDestDir" \
  -D INSTALL_DIR_INCLUDE:STRING="inc" \
  -D INSTALL_DIR_LIB:STRING="lib" \
  -D INSTALL_DIR_RESOURCE:STRING="src" \
  -D INSTALL_NAME_DIR:STRING="@executable_path/../Frameworks" \
  -D 3RDPARTY_FREETYPE_DIR:PATH="$aFreeType" \
  -D 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="$aFreeType/include" \
  -D 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="$aFreeType/include" \
  -D 3RDPARTY_FREETYPE_LIBRARY_DIR:PATH="$aFreeType/lib" \
  -D USE_FREEIMAGE:BOOL="OFF" \
  -D BUILD_MODULE_Draw:BOOL="OFF" \
  "$aCasSrc" 2>&1 | tee -a $aLogFile
  aResult=$?; if [[ $aResult != 0 ]]; then exit $aResult; fi
fi
aTimeGEN=$SECONDS
logDuration $toCMake "Generation" $aTimeZERO $aTimeGEN

# clean up from previous build
if [[ $toClean == 1 ]]; then
  make clean
fi

# build the project
if [[ $toMake == 1 ]]; then
  echo Building...
  make -j $aNbJobs 2>&1 | tee -a $aLogFile
  aResult=$?; if [[ $aResult != 0 ]]; then exit $aResult; fi
fi
aTimeBUILD=$SECONDS
logDuration $toMake "Building"       $aTimeGEN  $aTimeBUILD
logDuration $toMake "Total building" $aTimeZERO $aTimeBUILD

# install the project
if [[ $toInstall == 1 ]]; then
  echo Installing into $aCasSrc/work/$aPlatformAndCompiler...
  make install 2>&1 | tee -a $aLogFile
  cp -f $aCasSrc/VERSION.html $aDestDir/VERSION.html
fi
aTimeINSTALL=$SECONDS
logDuration $toInstall "Install" $aTimeBUILD $aTimeINSTALL

# create an archive
if [[ $toPack == 1 ]]; then
  anArchName=occt-$aPlatformAndCompiler.tar.bz2
  echo Creating an archive $aCasSrc/work/$anArchName...
  rm $aCasSrc/work/$aPlatformAndCompiler/../$anArchName &>/dev/null
  pushd $aCasSrc/work/$aPlatformAndCompiler
  tar -jcf $aCasSrc/work/$aPlatformAndCompiler/../$anArchName *
  popd
fi
aTimePACK=$SECONDS
logDuration $toPack "Packing archive" $aTimeINSTALL $aTimePACK

# finished
DURATION=$(($aTimePACK - $aTimeZERO))
echo Total time: $DURATION sec
logDuration 1 "Total" $aTimeZERO $aTimePACK

popd