#!/bin/sh -x

# variables
VERSION=${VERSION:-$(date +%F | tr - .)}
BUILD=1

TAG=cyco
OUTPUT=/tmp
TMP=/tmp/$TAG
CWD=$(pwd)

PRGNAM=$(basename $CWD)
PKG=$TMP/pkg-$PRGNAM

ARCH=$(uname -m)

PREFIX=/usr

REPOSITORY=/home/installs/SlackBuilds/repositories/$PRGNAM

# nettoyage préalable
rm -fr $PKG $TMP/$PRGNAM-$VERSION

mkdir -p $PKG

GOARCH=amd64
case $ARCH in
    x86_64)
        GOARCH=amd64
        ;;
    "i?86")
        GOARCH=386
        ;;
    *)
        GOARCH=arm
esac

# mise en place
cd $TMP
[ ! -e $REPOSITORY ] \
	&& hg clone -u release https://code.google.com/p/go $REPOSITORY \
	|| (cd $REPOSITORY && hg pull -u)

mkdir -p $PKG$PREFIX/lib$(echo $ARCH | grep -o "64")
cp -R $REPOSITORY $PKG$PREFIX/lib$(echo $ARCH | grep -o "64")/
rm -fr $PKG$PREFIX/lib$(echo $ARCH | grep -o "64")/$PRGNAM/.hg*
cd $PKG$PREFIX/lib$(echo $ARCH | grep -o "64")/$PRGNAM/src
./all.bash

chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -exec chmod 755 {} \; -o \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 640 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;

cd $PRGNAM/misc/emacs
find . -type f -name \*.el -exec emacs -batch -f batch-byte-compile {} \;


mkdir -p $PKG$PREFIX/share/emacs/site-lisp/
cd $PKG$PREFIX/share/emacs/site-lisp/
ln -s ../../../$PRGNAM/misc/emacs golang

mkdir -p $PKG/etc/profile.d
cat <<EOF > $PKG/etc/profile.d/$PRGNAM.sh
#!/bin/sh

export GOROOT=$PREFIX/$PRGNAM
export GOBIN=\$GOROOT/bin
export GOOS=linux
export GOARCH=$GOARCH
export PATH=\$PATH:\$GOBIN
EOF
chmod +x $PKG/etc/profile.d/$PRGNAM.sh
cat <<EOF > $PKG/etc/profile.d/$PRGNAM.csh
#!/bin/csh

setenv GOROOT $PREFIX/$PRGNAM
setenv GOBIN \$GOROOT/bin
setenv GOOS linux
setenv GOARCH $GOARCH
setenv PATH \$PATH:\$GOBIN
EOF
chmod +x $PKG/etc/profile.d/$PRGNAM.csh

mkdir -p $PKG$PREFIX/doc
cd $PKG$PREFIX/doc
ln -s ../$PRGNAM/doc $PRGNAM-$VERSION

# correction
cd $PKG
chown -R root:root *

[ -d $PKG/usr/man ] && find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

# embaumement
mkdir -p $PKG/install
cat <<EOF > $PKG/install/slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

     |-----handy-ruler------------------------------------------------------|
$PRGNAM: $PRGNAM (a systems programming language)
$PRGNAM:
$PRGNAM: Go is…
$PRGNAM: …simple
$PRGNAM: …fast
$PRGNAM: …safe
$PRGNAM: …concurrent
$PRGNAM: …fun
$PRGNAM: …open source
$PRGNAM:
$PRGNAM: http://weekly.golang.org/
EOF

# empaquetage
makepkg -l y -c n $OUTPUT/$PRGNAM-$(echo $VERSION | tr - .)-$ARCH-$BUILD$TAG.txz