#!/usr/bin/env bash

usage () {
cat <<EOI
Usage: $0 [ options... ]
Options:
    -a : autoconf+cscope
    -c : CMake debug build
    -d : dependencies check
    -g : prefer GdkPixbuf rendering
    -i : prefer Imlib2 rendering
    -n : prefer SVG by nanosvg
    -r : CMake release build
    -s : prefer SVG by librsvg
    -t : test configure options
    -j# : number of gmake procs
    --prefix=... : install prefix
    --with-xterm=... : set terminal
EOI
exit 0
}

unset ACONF DBGCM DEPEN RELCM TESTC GDK IM2 jobs prefix xterm
prefix=/usr
xterm=urxvt
GDK=ON
IM2=OFF
RSV=ON
NSV=OFF

if ! command -v gmake >/dev/null ; then
    function gmake () {
        make "$@"
    }
fi

# parse argv
for x
do
    case $x in
        (-a) ACONF=1 ;;  # enable autoconf+cscope
        (-c) DBGCM=1 ;;  # enable CMake debug build
        (-d) DEPEN=1 ;;  # check the dependencies
        (-r) RELCM=1 ;;  # enable CMake release build
        (-t) TESTC=1 ;;  # test all combinations of configure options
        (-j*) jobs=$x ;; # number of gmake procs
        (-i) IM2=ON ; GDK=OFF ;; # enable Imlib2
        (-g) GDK=ON ; IM2=OFF ;; # enable gdkpixbuf
        (-n) NSV=ON ; RSV=OFF ;; # enable nanosvg
        (-s) RSV=ON ; NSV=OFF ;; # enable librsvg
        (--prefix=*) prefix=${x#*=} ;; # install prefix
        (--with-xterm=*) xterm=${x#*=} ;; # set terminal
        (-h|--help|-?) usage ;;
        (*) echo "$0: Unknown option '$x'." >&2 ; exit 1 ;;
    esac
done

# set default
[[ -v ACONF || -v DBGCM || -v DEPEN || -v RELCM || -v TESTC ]] || ACONF=1

# gmake jobs
[[ -v jobs ]] || jobs=-j$(($(nproc 2>/dev/null||echo 4)<<1))

# check all POTFILES exist
if [[ -f po/POTFILES.in ]]; then
    fail=
    for file in $(< po/POTFILES.in ); do
        if [[ ! -f $file ]]; then
            echo "Missing $file is still in po/POTFILES.in!" >&2
            fail+="$file "
        fi
    done
    if [[ -n $fail ]]; then
        echo "Please update po/POTFILES.in for $fail!" >&2
        set -x
        exit 99
    fi
fi

if [[ -v ACONF ]]; then

    rm -f cscope.*
    ./autogen.sh
    ./configure.sh
    gmake clean
    gmake cscope
    cscope -b
    gmake "$jobs" clean all README

fi

if [[ -v DBGCM ]]; then

    # cmake cheat sheet... with Debian-style configuration
    mkdir -p builddir-debug || rm -rf builddir-debug/CMake*
    cd builddir-debug &&
    cmake .. \
        -DCONFIG_GDK_PIXBUF_XLIB=$GDK \
        -DCONFIG_IMLIB2=$IM2 \
        -DCONFIG_LIBRSVG=$RSV \
        -DCONFIG_NANOSVG=$NSV \
        -DCONFIG_XRANDR=ON \
        -DCONFIG_XPM=ON \
        -DCMAKE_INSTALL_PREFIX="$prefix" \
        -DCMAKE_BUILD_TYPE=RelWithDebInfo \
        -DICEHELPIDX="$prefix/share/doc/icewm-common/html/icewm.html" \
        -DCFGDIR=/etc/X11/icewm \
        -DVERSION=10.9.8-debug \
        -DDOCDIR="$prefix/share/doc/icewm-common" \
        -DCMAKE_VERBOSE_MAKEFILE=ON \
        -DXTERMCMD="$xterm" &&
    gmake "$jobs"
fi

if [[ -v RELCM ]]; then

    # cmake release configuration
    [[ -d build ]] && rm -rf build
    mkdir -m 0700 build &&
    cd build &&
    cmake .. \
        -DCMAKE_BUILD_TYPE=MinSizeRel \
        -DCMAKE_INSTALL_PREFIX="$prefix" \
        -DCONFIG_GDK_PIXBUF_XLIB=$GDK \
        -DCONFIG_IMLIB2=$IM2 \
        -DCONFIG_LIBRSVG=$RSV \
        -DCONFIG_NANOSVG=$NSV \
        -DCONFIG_XPM=ON \
        -DCMAKE_VERBOSE_MAKEFILE=ON \
        -DCONFIG_XRANDR=ON \
        -DENABLE_LTO=ON \
        -DXTERMCMD=$xterm &&
    gmake "$jobs"
fi

# check the dependencies
if [[ -v DEPEN ]]; then
    for p in \
        x11 xext xcomposite xdamage xfixes \
        xrender xrandr xinerama xft \
        fontconfig sm ice \
        sndfile alsa ao \
        gio-2.0 gio-unix-2.0 \
        gdk-pixbuf-xlib-2.0 librsvg-2.0 \
        imlib2 xpm libpng libjpeg
    do
        printf "%-20s: " "$p"
        pkg-config --modversion --print-errors --errors-to-stdout $p
    done
fi

# test combinations of configure options
if [[ -v TESTC ]]; then
    rm -f -- rebuild.log rebuild.err
    for i in {001..050} :; do
        rm -f -- rebuild.tmp
        gmake "$jobs" clean &>>rebuild.log
        # pick five configure options randomly:
        able=$(./configure --help=short |
              sed -e 's|\[.*||' |
              awk '{print $1}' |
              grep -e --enable- -e --disable- |
              grep -v -e -FEATURE -e -checking -e -tracking -e -maintainer |
              grep -v -e -rules -e -install -e -libtool -e -static -e -shared |
              shuf -n 5)
        echo "# $i: $(date +%T): ./configure $able" | tee rebuild.tmp
        ./configure $able &>>rebuild.tmp &&
        gmake "$jobs" &>>rebuild.tmp ||
        { echo "FAILED for $able !" |
            tee -a rebuild.err;
            mv -fv rebuild.tmp rebuild-$i.err
        }
    done |& tee -a rebuild.log
fi