#!/bin/bash -xe

here=/home/nasmbuild/work
patchdir=/home/nasmbuild/patches
snapdir=/pub/nasm/snapshots
reldir=/pub/nasm/releasebuilds
repo=/pub/git/nasm/nasm.git
web=/home/www/nasm

DOS4GW=/usr/share/openwatcom/binw/dos4gw.exe
CWSDPMI=/home/nasmbuild/cwsdpmi
READMES=/home/nasmbuild/readmes

export PATH=/home/nasmbuild/bin:/bin:/usr/bin:/usr/local/bin:/opt/watcom/bin

cd $here

if [ `whoami` != nasmbuild ]; then
    echo "$0: run me as nasmbuild, please" 1>&2
    exit 1
fi

build () {
    version="$1"
    outdir="$2"
    gitdir="$3"
    rev="$4"

    cpus=$(grep '^processor' < /proc/cpuinfo | wc -l)
    jobs=$((cpus+2))
    makej="make -j$jobs"

    rm -rf nasm-* win32 dos os2 rpmbuild html
    mkdir -p rpmbuild/{BUILD,RPMS,SRPMS,SPECS,SOURCES}

    ( 
      cd "$gitdir"
      if [ -d "$patchdir"/"$version" ]; then
	  for p in "$patchdir"/"$version"/*; do
	      git am "$p"
	  done
      fi
      ./misc/release $version $here
    )
    do32 rpmbuild --target i386 -ta nasm-$version.tar.bz2
    rpmbuild --target x86_64 -ta nasm-$version.tar.bz2
    
    tar xfj nasm-$version.tar.bz2
    tar xfj nasm-$version-xdoc.tar.bz2

    cp -a nasm-$version/doc/html .

    mkdir -p win32
    cp -a nasm-$version win32
    cd win32/nasm-$version
    LDFLAGS='-s' ./configure --host=i386-mingw32
    $makej
    cd ..
    zip -9Dl  ../nasm-$version-win32.zip nasm-$version/COPYING
    zip -9Drg ../nasm-$version-win32.zip nasm-$version -i \*.exe
    cd ..
    
    mkdir -p dos
    cp -a nasm-$version dos
    cd dos/nasm-$version
    LDFLAGS='-s' ./configure --host=i586-pc-msdosdjgpp
    $makej
    mv doc/nasmdoc.txt .
    cp $READMES/dos README
    cp $CWSDPMI/bin/cwsdpmi.{exe,doc} .
    cd ..
    zip -9Dl  ../nasm-$version-dos.zip nasm-$version/{COPYING,README,nasmdoc.txt,cwsdpmi.doc}
    zip -9Drg ../nasm-$version-dos.zip nasm-$version -i \*.exe
    find nasm-$version -name \*.exe -a -not -name cwsdpmi.exe -type f -print0 | \
	xargs -0r time upx -q --lzma --best --all-filters
    zip -9Dl  ../nasm-$version-dos-upx.zip nasm-$version/{COPYING,README,nasmdoc.txt,cwsdpmi.doc}
    zip -9Drg ../nasm-$version-dos-upx.zip nasm-$version -i \*.exe
    cd ..
    
    mkdir -p os2
    cp -a nasm-$version os2
    cd os2/nasm-$version
    make -f Mkfiles/owlinux.mak os2
    cd ..
    zip -9Dl  ../nasm-$version-os2.zip nasm-$version/COPYING
    zip -9Drg ../nasm-$version-os2.zip nasm-$version -i \*.exe
    cd ..

    rm -rf "$gitdir" nasm-$version
    
    mkdir -p "$outdir"
    echo "$rev" > "$outdir"/git.id
    mv -f nasm-${version}*.tar.* nasm-${version}*.zip "$outdir"
    find rpmbuild -name \*.rpm -exec mv -f '{}' "$outdir" \;

    echo "$version" "$rev" >> build-ids
}

# This gets run for real (tagged) releases
process_release () {
    rm -rf $web/docs/"$1"
    cp -a html $web/docs/"$1"
    case "$1" in
	*rc*)
	    # -rc release
	    update_version "$1" $web/version.inc
	    ;;
	*)
	    if update_version "$1" $web/version.inc; then
		( cd $web && ln -sf docs/"$1" doc )
	    fi
	    ;;
    esac
}

rm -rf git git-rel

today=$(date +%Y%m%d)

git clone -s -l $repo git
HEAD=$(cd git && git rev-parse HEAD)

#
# Test run?
#
if [ x"$1" = xtest ]; then
    rm -rf /var/tmp/nasmtest
    build $(cat git/version)-test /var/tmp/nasmtest git "$HEAD"
    exit 0
fi

#
# Tagged releases...
#
(cd git && git tag) | while read tag; do
    : $tag
    case "$tag" in
	nasm-0.99.0[5-9]|nasm-0.99.[1-9]*|nasm-[1-9]*)
	    rel_version=$(echo "$tag" | sed -e 's/^nasm-//')
	    if [ ! -d "$reldir"/"$rel_version" ]; then
		git clone -s -l -n git git-rel
		( cd git-rel && git checkout "$tag" )
		tagref=$(cd git-rel && git rev-parse "$tag")
		build "$rel_version" "$reldir"/"$rel_version" git-rel "$tagref"
		process_release "$rel_version"
	    fi
	    ;;
    esac
done

#
# Daily snapshot...
#
if [ x$HEAD = x$(cat LAST_HEAD) ]; then
    exit 0
fi
if [ -d "$snapdir"/$today ]; then
    # We already did a build today...
    exit 0
fi

snap_version=$(cat git/version)-$today
build "$snap_version" "$snapdir"/$today git "$HEAD"

echo "$HEAD" > LAST_HEAD

( cd $snapdir && rm -f latest && ln -s $today latest )