#!/bin/sh

#
# Builds or updates a pidgin client with np1sec plugin, then runs it.
#

set -e

FORCE=false

# This code currently depends on API renaming changes
# in the np1sec/api-docs branch. Once this PR
# https://github.com/equalitie/np1sec/pull/40
# is merged into np1sec/master, we should start
# using that again.
NP1SEC_TEST_CLIENT_BRANCH=master
NP1SEC_BRANCH=master
PIDGIN_HOME=pidgin-home

USE_THIS_SCRIPT=false

print_help() {
	echo "Usage: $0 [options]"
	echo "Options:"
	echo "  --help                         # Show this help"
	echo "  --client-branch=<branch-name>  # Select a specific np1sec-test-client branch"
	echo "  --np1sec-branch=<branch-name>  # Select a specific np1sec branch"
	echo "  --use-this-script              # Don't download the newest version of this script, but use this one"
	echo "  --config=<dir>                 # Set path to pidgin's config directory"
	echo "  --force                        # Ignore missing dependencies"
}

for i in "$@"; do
	case $i in
		-b=*|--client-branch=*)
			NP1SEC_TEST_CLIENT_BRANCH="${i#*=}"
			;;
		-n=*|--np1sec-branch=*)
			NP1SEC_BRANCH="${i#*=}"
			;;
		-c=*|--config=*)
			PIDGIN_HOME="${i#*=}"
			;;
		-u|--use-this-script)
			USE_THIS_SCRIPT=true
			;;
		--force)
			FORCE=true
			;;
		-h|--help)
			print_help
			exit
			;;
		*)
			echo "Error: unknown option \"${i}\""
			print_help
			exit
			;;
	esac
done

NPROC=1

if [ "${USE_THIS_SCRIPT}" = false ]; then
	wget https://raw.githubusercontent.com/equalitie/np1sec-test-client/${NP1SEC_TEST_CLIENT_BRANCH}/run-np1sec.sh -O tmp.sh
	chmod u+x tmp.sh
	./tmp.sh --use-this-script \
		       --client-branch=${NP1SEC_TEST_CLIENT_BRANCH} \
					 --np1sec-branch=${NP1SEC_BRANCH} \
					 --config=${PIDGIN_HOME} \
					 $([ "$FORCE" = true ] && echo "--force")
	exit
fi

if [ "$(expr substr $(uname -s) 1 5)" = "Linux" ]; then
	NPROC=`nproc`
fi

testheader() {
	RETURN=0
	echo "#include <$1>\nmain(){}" > conftest.c
	${CXX-c++} conftest.c -o conftest.a.out >/dev/null 2>/dev/null || RETURN=1
	rm -f conftest.c conftest.a.out
	return $RETURN
}

testasan() {
	RETURN=0
	echo "main(){}" > conftest.c
	${CXX-c++} conftest.c -fsanitize=address -o conftest.a.out >/dev/null 2>/dev/null || RETURN=1
	rm -f conftest.c conftest.a.out
	return $RETURN
}

libname() {
	# TODO: support os x
	echo "lib$1.so"
}

libdir() {
	# TODO: support os x
	echo lib
}

WORKDIR="`pwd`"


DEPS=""

type ${CC-cc} >/dev/null || DEPS="${DEPS} c-compiler"
type ${CXX-c++} >/dev/null || DEPS="${DEPS} cxx-compiler"
type pkg-config >/dev/null || DEPS="${DEPS} pkg-config"

if [ -n "${DEPS}" ]; then
	echo "Missing dependencies: ${DEPS}"
	${FORCE} || echo "Ignore this warning with --force."
	${FORCE} || exit 1
	echo "Ignoring missing dependencies."
fi

type git >/dev/null || DEPS="${DEPS} git"
type wget >/dev/null || DEPS="${DEPS} wget"
type intltool-update >/dev/null || DEPS="${DEPS} intltool"
type cmake >/dev/null || DEPS="${DEPS} cmake"
pkg-config --exists glib-2.0 || DEPS="${DEPS} libglib2.0-dev"
pkg-config --exists gtk+-2.0 || pkg-config --exists gtk+-3.0 || DEPS="${DEPS} libgtk2.0-dev"
pkg-config --exists libxml-2.0 || DEPS="${DEPS} libxml2-dev"
pkg-config --exists gnutls || DEPS="${DEPS} libgnutls-dev"
testheader gcrypt.h || DEPS="${DEPS} libgcrypt-dev"
testheader boost/optional.hpp || DEPS="${DEPS} libboost1.55-dev (or higher)"

if [ -n "${DEPS}" ]; then
	echo "Missing dependencies: ${DEPS}"
	${FORCE} || echo "Ignore this warning with --force."
	${FORCE} || exit 1
	echo "Ignoring missing dependencies."
fi

if testasan; then
	export CFLAGS="-fsanitize=address -ggdb"
	export CXXFLAGS="-fsanitize=address -ggdb"
fi

PIDGIN_TAR_FILE=pidgin-2.11.0.tar.bz2
PIDGIN_SHA256=f72613440586da3bdba6d58e718dce1b2c310adf8946de66d8077823e57b3333

if [ ! -x bin/bin/pidgin ]; then
	rm -rf pidgin-build pidgin-2.11.0
	if [ ! -f ${PIDGIN_TAR_FILE} ]; then
		wget http://sourceforge.net/projects/pidgin/files/Pidgin/2.11.0/${PIDGIN_TAR_FILE}
	fi
	CHECKSUM=`sha256sum "${PIDGIN_TAR_FILE}" | awk '{ print $1; }'`
	if [ "${PIDGIN_SHA256}" != "${CHECKSUM}" ]; then
		echo "Pidgin: invalid checksum"
		exit 1
	fi
	tar xfj ${PIDGIN_TAR_FILE}
	mkdir pidgin-build
	cd pidgin-build
	../pidgin-2.11.0/configure --disable-missing-dependencies \
	                           --disable-consoleui \
	                           --with-dynamic-prpls=jabber \
	                           --prefix="${WORKDIR}"/bin
	make -j ${NPROC} ${MAKEOPTS}
	make install
	cd ..
fi

FORCE_REBUILD_CLIENT=false

if [ ! -d np1sec ]; then
	FORCE_REBUILD_CLIENT=true
	rm -rf np1sec np1sec-build bin/"`libdir`"/"`libname np1sec`"
	git clone https://github.com/equalitie/np1sec.git np1sec
	cd np1sec
	git checkout "${NP1SEC_BRANCH}"
	cd ..
	mkdir np1sec-build
	cd np1sec-build
	cmake ../np1sec -DCMAKE_INSTALL_PREFIX="${WORKDIR}"/bin -DBUILD_TESTS=Off -DCMAKE_BUILD_TYPE=Debug
	make -j ${NPROC} ${MAKEOPTS}
	cp "`libname np1sec`" ../bin/"`libdir`"/
	cd ..
else
	cd np1sec
	git remote update
	if [ `git rev-parse @` != `git rev-parse origin/"${NP1SEC_BRANCH}"` -o ! -e ../bin/"`libdir`"/"`libname np1sec`" ]; then
		FORCE_REBUILD_CLIENT=true
		git checkout "${NP1SEC_BRANCH}"
		git pull origin "${NP1SEC_BRANCH}"
		cd ..
		cd np1sec-build
		make -j ${NPROC} ${MAKEOPTS}
		cp "`libname np1sec`" ../bin/"`libdir`"/
	fi
	cd ..
fi

if [ ! -d np1sec-test-client ]; then
	rm -rf np1sec-test-client np1sec-test-client-build
	git clone https://github.com/equalitie/np1sec-test-client.git np1sec-test-client
	cd np1sec-test-client
	git checkout "${NP1SEC_TEST_CLIENT_BRANCH}"
	cd ..
	mkdir np1sec-test-client-build
	cd np1sec-test-client-build
	cmake ../np1sec-test-client \
		-DPIDGIN_INC_DIR="${WORKDIR}"/bin/include \
		-DNP1SEC_LIB_DIR="${WORKDIR}"/bin/lib \
		-DNP1SEC_INC_DIR="${WORKDIR}"/np1sec \
		-DCMAKE_BUILD_TYPE=Debug
	make ${MAKEOPTS}
	cp "`libname np1sec-plugin`" ../bin/
	cd ..
else
	cd np1sec-test-client
	git remote update
	if [ "${FORCE_REBUILD_CLIENT}" = true -o `git rev-parse @` != `git rev-parse origin/"${NP1SEC_TEST_CLIENT_BRANCH}"` -o ! -e ../bin/"`libname np1sec-plugin`" ]; then
		git checkout "${NP1SEC_TEST_CLIENT_BRANCH}"
		git pull origin "${NP1SEC_TEST_CLIENT_BRANCH}"
		cd ..
		cd np1sec-test-client-build
		if [ "${FORCE_REBUILD_CLIENT}" = true ]; then
			make -B ${MAKEOPTS}
		else
			make ${MAKEOPTS}
		fi
		cp "`libname np1sec-plugin`" ../bin/
	fi
	cd ..
fi

unlink ${PIDGIN_HOME}/plugins/"`libname np1sec-plugin`" 2>/dev/null || true
mkdir -p ${PIDGIN_HOME}/plugins
ln -s ../../bin/"`libname np1sec-plugin`" ${PIDGIN_HOME}/plugins/"`libname np1sec-plugin`"

(cd np1sec && echo "Revision of np1sec: $(git rev-parse --short HEAD)")
(cd np1sec-test-client && echo "Revision of np1sec-test-client: $(git rev-parse --short HEAD)")

# Tell the np1sec test client to output debug log.
export NP1SEC_TEST_CLIENT_PRINT_LOG=true

bin/bin/pidgin --config=${PIDGIN_HOME}