#!/bin/bash -x
set -o errexit
set -o nounset

# where is the source? (todo: we could checkout from svn)

LIBT2NSRC="$PWD"
LIBT2N_EXAMPLES="$PWD/examples-codegen"
EXAMPLES=2

# general settings

# todo: safe temp dir creation
INSTDIR="/tmp/jens-delme"
BUILDDIR="$INSTDIR/build"
mkdir "$INSTDIR"
mkdir "$BUILDDIR"
INSTPREFIX="$INSTDIR/usr"
MAKE="dmake"
DOCLEAN="true"

function prepend() {
	if [ "x$1" = "x" ]; then
		echo "$2"
	else
		echo "$2:$1"
	fi
}

function build() {
    # newer autoreconf (autoconf) versions don't have the -M option and no real replacement :-(
    # (you can only set ACLOCAL_AMFLAGS in the Makefile.am)
    # todo: this IMHO should be filed as bug against autoconf
    # ugly workaround
    autoreconf -f -i $@ || { aclocal --force $(echo "$@"|sed 's,-M,-I,') && libtoolize --copy --force && autoconf --force  && automake --add-missing --copy --force-missing; }
    ./configure --prefix="$INSTPREFIX"
    if $DOCLEAN; then
	$MAKE distclean
	./configure --prefix="$INSTPREFIX"
	$MAKE clean
	# ensure make clean works twice (did not work at some point)
	$MAKE clean

	# todo: at the moment distcheck does not work on a distclean source
	$MAKE
	$MAKE clean
	$MAKE distcheck
    fi

    $MAKE install
}

# 1. build and install lib and codegen
cd "$LIBT2NSRC"
build
echo "OK: library and code generator compiled and installed"

# prepare environment to use installed libt2n and code generator in non-standard directory
# temporarily disable nounset

set +o nounset
export PATH=$(prepend "$PATH" "$INSTPREFIX/bin")
export LD_LIBRARY_PATH=$(prepend "$LD_LIBRARY_PATH" "$INSTPREFIX/lib")
export PKG_CONFIG_PATH=$(prepend "$PKG_CONFIG_PATH" "$INSTPREFIX/lib/pkgconfig")
set -o nounset

for EXAMPLE in $(seq 1 $EXAMPLES); do

    # 2. build example

    cp -af "$LIBT2N_EXAMPLES/example$EXAMPLE" "$BUILDDIR"
    cd "$BUILDDIR/example$EXAMPLE"
    build -M "$INSTPREFIX/share/aclocal"
    echo "OK: example $EXAMPLE using installed libt2n works"

    # 3. compile client using the now installed default lib
    cp -af "$LIBT2N_EXAMPLES/example$EXAMPLE-client" "$BUILDDIR"
    cd "$BUILDDIR/example$EXAMPLE-client"
    build -M "$INSTPREFIX/share/aclocal"
    echo "OK: example $EXAMPLE using installed example lib works"

    # 4. test installed server and client
    libt2n-example$EXAMPLE-server &
    SPID="$!"
    # ugly
    sleep 1
    if libt2n-example$EXAMPLE-client; then
	echo "installed client and server work"
	RET="0"
    else
	echo "installed client and server don't work"
	RET="1"
    fi
    kill "$SPID"
    if [ "$RET" = "1" ]; then
	exit 1
    fi
done

echo Everything is fine