#!/bin/bash

# defaults
QMAKE_BIN=qmake
WHICH=which
NO_DB=0
NO_ZEROCONF=0
NO_XRANDR=0
QXT_MODULES="docs berkeley core designer gui network sql web zeroconf"

# get env compiler flags
CFLAGS=`echo $CFLAGS`
CXXFLAGS=`echo $CXXFLAGS`
LDFLAGS=`echo $LDFLAGS`
CPPFLAGS=`echo $CPPFLAGS`

# detect platform
if uname -a | grep -iq Darwin; then
    QXT_MAC=1
    DEFAULT_LIBS="/Library/Frameworks"
    QMAKE_PARAMS="-spec macx-g++"
    NO_XRANDR=1
else
    QXT_MAC=0
    DEFAULT_LIBS="PREFIX/lib"
    QMAKE_PARAMS=""
fi

# working directories
QXT_SOURCE_TREE=`dirname $0`
QXT_SOURCE_TREE=`(cd "$QXT_SOURCE_TREE"; /bin/pwd)`
QXT_BUILD_TREE=`/bin/pwd`
[ ! -d $QXT_BUILD_TREE/features ] && mkdir $QXT_BUILD_TREE/features
[ ! -d $QXT_BUILD_TREE/examples ] && mkdir $QXT_BUILD_TREE/examples
[ ! -d $QXT_BUILD_TREE/tests ] && mkdir $QXT_BUILD_TREE/tests

# output files
CONFIG_LOG=$QXT_BUILD_TREE/config.log
QMAKE_CACHE=$QXT_BUILD_TREE/.qmake.cache
QXT_VARS=$QXT_BUILD_TREE/features/qxtvars.prf
[ -f $CONFIG_LOG ] && mv $CONFIG_LOG $CONFIG_LOG.bak
[ -f $QMAKE_CACHE ] && mv $QMAKE_CACHE $QMAKE_CACHE.bak
[ -f $QXT_VARS ] && mv $QXT_VARS $QXT_VARS.bak

# colors
C_RED='\e[1;31m'
C_BLUE='\e[1;34m'
C_GREEN='\e[1;32m'
C_CYAN='\e[1;36m'
C_NONE='\e[0m'

# defaults
echo "CONFIG += silent" > $QMAKE_CACHE
echo "QXT_MODULES = $QXT_MODULES" >> $QMAKE_CACHE
echo "QXT_MODULES = $QXT_MODULES" > $QXT_VARS

# parse configure options
while (( $# > 0 )); do
    if [ $1 == "-qmake-bin" ]; then
        QMAKE_BIN=$2; shift
    elif [ $1 == "-L" ]; then
        echo "LIBS += -L$2" >> $QMAKE_CACHE;shift
    elif [ $1 == "-l" ]; then
        echo "LIBS += -l$2" >> $QMAKE_CACHE;shift
    elif [ $1 == "-I" ]; then
        echo "INCLUDEPATH += $2" >> $QMAKE_CACHE;shift
    elif [ $1 == "-bootstrap" ]; then
        echo "CONFIG += bootstrap" >> $QMAKE_CACHE; shift
    elif [ $1 == "-nomake" ]; then
        echo "QXT_MODULES -= $2" >> $QMAKE_CACHE
        echo "QXT_MODULES -= $2" >> $QXT_VARS; shift
    elif [ $1 == "-prefix" ]; then
        QXT_INSTALL_PREFIX=$2; shift
    elif [ $1 == "-libdir" ]; then
        QXT_INSTALL_LIBS=$2; shift
    elif [ $1 == "-docdir" ]; then
        QXT_INSTALL_DOCS=$2; shift
    elif [ $1 == "-headerdir" ]; then
        QXT_INSTALL_HEADERS=$2; shift
    elif [ $1 == "-bindir" ]; then
        QXT_INSTALL_BINS=$2; shift
    elif [ $1 == "-featuredir" ]; then
        QXT_INSTALL_FEATURES=$2; shift
    elif [ $1 == "-static" ]; then
        echo "CONFIG += static staticlib" >> $QMAKE_CACHE
        echo "DEFINES += QXT_STATIC" >> $QXT_VARS
    elif [ $1 == "-debug" ]; then
        echo "CONFIG += debug" >> $QMAKE_CACHE
        echo "QXT_INSTALL_TYPE = debug" >> $QXT_VARS
    elif [ $1 == "-release" ]; then
        echo "CONFIG += release" >> $QMAKE_CACHE
        echo "QXT_INSTALL_TYPE = release" >> $QXT_VARS
    elif [ $1 == "-no-db" ]; then
        NO_DB=1
    elif [ $1 == "-no-xrandr" ]; then
        NO_XRANDR=1
    elif [ $1 == "-no-zeroconf" ]; then
        NO_ZEROCONF=1
    elif [ $1 == "-no-avahi" ]; then
        echo "CONFIG += NO_AVAHI" >> $QMAKE_CACHE
    elif [ $1 == "-verbose" ]; then
        echo "CONFIG -= silent" >> $QMAKE_CACHE
    elif [ $1 == "-qws" ]; then
        echo "CONFIG += qws" >> $QMAKE_CACHE
    elif [ $1 == "-coverage" ]; then
        echo "CONFIG += coverage" >> $QMAKE_CACHE
    elif [ $1 == "-universal" ]; then
        echo "CONFIG += x86 ppc" >> $QMAKE_CACHE
    elif [ $1 == "-arch" ]; then
        echo "CONFIG += $2" >> $QMAKE_CACHE
        shift
    elif [ $1 == "-sdk" ]; then
        echo "QMAKE_MAC_SDK=$2" >> $QMAKE_CACHE; shift
    elif [ $1 == "-h" ] || [ $1 == "-help" ] || [ $1 == "--help" ]; then
        echo "Usage: configure [-prefix <dir>] [-libdir <dir>] [-docdir <dir>]"
        echo "       [-bindir <dir>] [-headerdir <dir>] [-featuredir <dir> ]"
        echo "       [-qmake-bin <path>] [-static] [-debug] [-release]"
        echo "       [-no-db] [-no-zeroconf] [-nomake <module>]"
        if [[ "$QXT_MAC" == "0" ]]; then
            echo -n "       [-no-xrandr] [-qws]"
        else
            echo -n "       [-universal] [-arch <arch>] [-sdk <path>]"
        fi
        echo " [-verbose] [-coverage]"
        echo
        echo "Installation options:"
        echo
        echo "-prefix <dir> ....... This will install everything relative to <dir>"
        echo "                      default: /usr/local/Qxt"
        echo "-libdir <dir> ....... Libraries will be installed to <dir>"
        echo "                      default: $DEFAULT_LIBS"
        echo "-docdir <dir> ....... Documentation will be installed to <dir>"
        echo "                      default: PREFIX/doc"
        echo "-bindir <dir> ....... Executables will be installed to <dir>"
        echo "                      default: PREFIX/bin"
        echo "-headerdir <dir> .... Include files will be installed to <dir>"
        echo "                      default: PREFIX/include"
        echo "-featuredir <dir> ... Feature files will be installed to <dir>"
        echo "                      default: QMAKE_MKSPECS/features"
        echo "-qmake-bin <path> ... Specifies the path to the qmake executable"
        echo "                      default: search the system path"
        echo "-L <path> ........... Specifies the a additional library search path"
        echo "-I <path> ........... Specifies the a additional include search path"
        echo "-l <path> ........... Add a custom library"
        echo "-static ............. Build Qxt as a static library"
        echo "-debug .............. Build Qxt with debugging symbols"
        echo "-release ............ Build Qxt without debugging support"
        if [[ "$QXT_MAC" != "1" ]]; then
            echo "-qws ................ Build for Qt/Embedded"
            echo "-no-xrandr  ......... Do not link to Xrandr"
        fi
        echo "-no-db .............. Do not link to Berkeley DB"
        echo "-no-zeroconf ........ Do not link to Zeroconf"
        echo "-no-openssl ......... Do not link to Openssl"
        echo "-no-avahi ........... Apple mdns-sd instead of avahi even on linux"
        echo "-nomake <module> .... Do not compile the specified module"
        echo "                      options: $QXT_MODULES"
        echo "-verbose ............ Show full compiler output"
        echo "-coverage ........... Collect coverage information"
        if [[ "$QXT_MAC" == "1" ]]; then
            echo "-universal .......... Equivalent to -arch ppc -arch x86"
            echo "-arch <arch> ........ Include <arch> in universal binary"
            echo "-sdk <path> ......... Use a different Mac SDK"
        fi

        [ -f $CONFIG_LOG.bak ] && mv $CONFIG_LOG.bak $CONFIG_LOG
        [ -f $QMAKE_CACHE.bak ] && mv $QMAKE_CACHE.bak $QMAKE_CACHE
        [ -f $QXT_VARS.bak ] && mv $QXT_VARS.bak $QXT_VARS
        exit
    else
        echo "Unrecognized configure option: $1"
        [ -f $CONFIG_LOG.bak ] && mv $CONFIG_LOG.bak $CONFIG_LOG
        [ -f $QMAKE_CACHE.bak ] && mv $QMAKE_CACHE.bak $QMAKE_CACHE
        [ -f $QXT_VARS.bak ] && mv $QXT_VARS.bak $QXT_VARS
        exit
    fi
    shift
done

# detect qmake
if ! $WHICH $QMAKE_BIN >>$CONFIG_LOG 2>&1; then
    echo >&2 "You don't seem to have 'qmake' in your PATH."
    echo >&2 "Cannot proceed."
    exit 1
fi

# default directories
if [[ "$QXT_INSTALL_PREFIX" == "" ]]; then
    QXT_INSTALL_PREFIX="/usr/local/Qxt"
fi
if [[ "$QXT_INSTALL_LIBS" == "" ]]; then
    if [[ "$QXT_MAC" == "1" ]]; then
        QXT_INSTALL_LIBS="/Library/Frameworks"
    else
        QXT_INSTALL_LIBS="$QXT_INSTALL_PREFIX/lib"
    fi
fi
if [[ "$QXT_INSTALL_DOCS" == "" ]]; then
    QXT_INSTALL_DOCS="$QXT_INSTALL_PREFIX/doc"
fi
if [[ "$QXT_INSTALL_HEADERS" == "" ]]; then
    QXT_INSTALL_HEADERS="$QXT_INSTALL_PREFIX/include"
fi
if [[ "$QXT_INSTALL_BINS" == "" ]]; then
    QXT_INSTALL_BINS="$QXT_INSTALL_PREFIX/bin"
fi
if [[ "$QXT_INSTALL_FEATURES" == "" ]]; then
    QXT_INSTALL_FEATURES=`$QMAKE_BIN -query QMAKE_MKSPECS`
    QXT_INSTALL_FEATURES="$QXT_INSTALL_FEATURES/features"
fi

# output variables
echo "QXT_INSTALL_PREFIX = $QXT_INSTALL_PREFIX" >> $QMAKE_CACHE
echo "QXT_INSTALL_PREFIX = $QXT_INSTALL_PREFIX" >> $QXT_VARS
echo "QXT_INSTALL_LIBS = $QXT_INSTALL_LIBS" >> $QMAKE_CACHE
echo "QXT_INSTALL_LIBS = $QXT_INSTALL_LIBS" >> $QXT_VARS
echo "QXT_INSTALL_BINS = $QXT_INSTALL_BINS" >> $QMAKE_CACHE
echo "QXT_INSTALL_BINS = $QXT_INSTALL_BINS" >> $QXT_VARS
echo "QXT_INSTALL_HEADERS = $QXT_INSTALL_HEADERS" >> $QMAKE_CACHE
echo "QXT_INSTALL_HEADERS = $QXT_INSTALL_HEADERS" >> $QXT_VARS
echo "QXT_INSTALL_FEATURES = $QXT_INSTALL_FEATURES" >> $QMAKE_CACHE
echo "QXT_INSTALL_FEATURES = $QXT_INSTALL_FEATURES" >> $QXT_VARS
echo "QXT_INSTALL_DOCS = $QXT_INSTALL_DOCS" >> $QMAKE_CACHE
echo "QXT_INSTALL_DOCS = $QXT_INSTALL_DOCS" >> $QXT_VARS
echo "QXT_SOURCE_TREE = $QXT_SOURCE_TREE" >> $QMAKE_CACHE
echo "QXT_BUILD_TREE = $QXT_BUILD_TREE" >> $QMAKE_CACHE

# detect make
echo>$CONFIG_LOG
if [ -z "$MAKE" ]; then
    MAKE=
    for mk in gmake make; do
        if "$WHICH" $mk 2>&1| grep -qv "no "; then
            MAKE=`$WHICH $mk`
            break
        fi
    done
    if [ -z "$MAKE" ]; then
        echo >&2 "You don't seem to have 'make' or 'gmake' in your PATH."
        echo >&2 "Cannot proceed."
        exit 1
    fi
fi

# detect dependencies
configtest()
{
    echo -en "Checking for $1 "
    echo -e  " \n\n $1\n" >>$CONFIG_LOG
    mkdir -p "$QXT_BUILD_TREE/config.tests/$1"
    cd "$QXT_BUILD_TREE/config.tests/$1"
    $QMAKE_BIN $QMAKE_PARAMS QMAKE_CFLAGS_RELEASE="$CFLAGS $CPPFLAGS" QMAKE_CXXFLAGS_RELEASE="$CXXFLAGS $CPPFLAGS" QMAKE_LFLAGS_RELEASE="$LDFLAGS" "$QXT_SOURCE_TREE/config.tests/$1/$1.pro" >>$CONFIG_LOG
    echo -n "."
    $MAKE clean >>$CONFIG_LOG 2>&1
    [ -f ./$1 ] && rm ./$1
    echo -n "."
    $MAKE >>$CONFIG_LOG 2>&1 >>$CONFIG_LOG 2>&1
    if [ -x $1 ] ; then
        echo -e >&2 "  [${C_GREEN}success${C_NONE}] "
        echo "DEFINES+=HAVE_$2">>$QMAKE_CACHE
    else
        echo -e >&2 "  [${C_RED}failure${C_NONE}] "
    fi
}

echo >&2 "Testing for optional external libraries."
echo >&2 "If tests fail, some features will not be available."

configtest qt4 QT
if [[ "$NO_DB" == "0" ]]; then
    configtest db DB
fi

if [[ "$QXT_MAC" == "0" ]]; then
    if [[ "$NO_XRANDR" == "0" ]]; then
        configtest xrandr XRANDR
    fi

    if [[ "$NO_ZEROCONF" == "0" ]]; then
        configtest zeroconf ZEROCONF
    fi
else
    echo "DEFINES+=HAVE_ZEROCONF">>$QMAKE_CACHE
fi

# run qmake
echo "Autodetection finished. Running qmake."
cd  $QXT_BUILD_TREE
$QMAKE_BIN $QMAKE_PARAMS QMAKE_CFLAGS_RELEASE="$CFLAGS $CPPFLAGS" QMAKE_CXXFLAGS_RELEASE="$CXXFLAGS $CPPFLAGS" QMAKE_LFLAGS_RELEASE="$LDFLAGS" "$QXT_SOURCE_TREE/libqxt.pro" -recursive >>$CONFIG_LOG
echo -e >&2 "${C_CYAN}Configure finished. Run $MAKE now.${C_NONE}\n"