#!/bin/bash
# Script: release    This SpaceFM developer's script performs a release
# License: GNU GENERAL PUBLIC LICENSE Version 3 http://www.gnu.org/licenses/gpl-3.0.txt

keyid='igsw@fastmail.com'  # default key used for signing tag
debian_id='IgnorantGuru <igsw@fastmail.com>' # written to debian changelog
make_opt='-sj2'

prog="spacefm"
configure="configure.ac"
me_name='release'  # name of this script
# define branches to use (usually only change these for testing):
next='next'
master='master'

curdir="$(pwd)"

# deny root user
if [ "$(whoami)" = "root" ]; then
	echo "$me_name: no root use" 1>&2
	exit 1
fi

cat << EOF
SpaceFM Release

This script is for use by developers.  It interactively performs a release of 
SpaceFM by increasing the version number, preparing the source dir for 
distribution, commiting the $next branch, merging to $master, signing the 
release tag, pushing $master, starting the next version, and pushing $next.

This script must be run from the git $next branch.

Manual workflow BEFORE continuing:

    backup issues   (optional)
    pull translations from Transifex (tx pull OR tx pull -fl LANG)
    update pot if needed (cd po && ./update-pot && cd .. && tx push -s)
    finalize Changelog
    build and install without warnings (GTK2 and GTK3)

EOF

# verify on next branch
git_status=`git status`
if [ "${git_status#On branch $next}" = "$git_status" ]; then
	echo "$me_name: not on branch $next" 1>&2
	exit 1
fi

if [ ! -e "$configure" ]; then
	echo "$me_name: $configure not found" 1>&2
	exit 1
fi

# get configure version
ver=`grep -m 1 "^AC_INIT(\[$prog\], \[" "$configure" \
			| sed "s/AC_INIT(\[$prog\], \[\(.*\)\])/\1/"`
if [ "$ver" = "" ]; then
	echo "$me_name: cannot get version" 1>&2
	exit 1
fi

# get new version
echo -n "Enter new release version (current is $ver): "
read newver
if [ -z "$newver" ] || [ "${newver/ /}" != "$newver" ]; then
    echo "Invalid version.  Aborted." 1>&2
    exit 1
fi

# set configure version
echo
echo "Changing $configure version $ver to $newver..."
#AC_INIT([spacefm], [1.0.0+next])
sed -i "s/^AC_INIT(\[$prog\], \[[0-9]\..*\])/AC_INIT(\[$prog\], \[$newver\])/" $configure

# test configure version changed
testver=`grep -m 1 "^AC_INIT(\[$prog\], \[" "$configure" \
			| sed "s/AC_INIT(\[$prog\], \[\(.*\)\])/\1/"`
if [ "$testver" != "$newver" ]; then
	echo "$me_name: change of version in $configure failed" 1>&2
	exit 1
fi

# set distros/debian/changelog version
echo "Setting version in distros/debian/changelog..."
cat << EOF > "distros/debian/changelog"	
$prog ($newver-1) unstable; urgency=low

  * release

 -- $debian_id  $(date -uR)
EOF
if [ $? -ne 0 ]; then
	echo "$me_name: error writing distros/debian/changelog" 1>&2
	exit 1
fi

# Rebuild manual
echo "Rebuilding manual with new version..."
echo ">>> cd data"
cd data || exit 1
rm -f spacefm-manual-en.html
echo ">>> time ./build-manual > spacefm-manual-en.html"
time ./build-manual > spacefm-manual-en.html || exit 1
if ( ! grep -q "SpaceFM version $newver" spacefm-manual-en.html ) || \
            [ ! "$(stat -c %s spacefm-manual-en.html)" -gt 400000 ]; then
    echo "$me_name: manual missing new version or too small" 1>&2
    exit 1
fi
if [ -d ../../spacefm-gh-pages ]; then
    echo
    echo "Copying manual to spacefm-gh-pages..."
    cp spacefm-manual-en.html ../../spacefm-gh-pages || exit 1
    cp spacefm-manual-en.html \
		../../spacefm-gh-pages/spacefm-manual-next-en.html || exit 1
fi
echo ">>> cd .."
cd .. || exit 1

# make spacefm.pot
#echo
#echo -n "Update spacefm.pot? [y/N] "
#read potmsg
#if [ "$potmsg" = "y" ] || [ "$potmsg" = "Y" ]; then
#	echo
#	cd po || exit 1
#    rm -f spacefm.pot
#	./update-pot
#	if [ $? -ne 0 ] || [ ! -s spacefm.pot ]; then
#		echo "$me_name: error creating po/spacefm.pot" 1>&2
#		exit 1
#	fi
#    cd .. || exit 1    
#fi

# check po files
echo
echo "Checking po files..."
poerr=0
for f in po/*.po; do
    msgfmt -o /dev/null -c "$f"
    if [ $? -ne 0 ]; then
        poerr=1
    fi
done
if [ $poerr -ne 0 ]; then
    exit 1
fi

# Pull wiki
if [ -d ../spacefm-wiki ]; then
    echo
    echo -n "Pull ../spacefm-wiki? [Y/n] "
    read pullwiki
    if [ -z "$pullwiki" ] || [ "$pullwiki" = "y" ] || [ "$pullwiki" = "Y" ]; then
        echo "Pulling ../spacefm-wiki"
        echo ">>> cd ../spacefm-wiki"
        cd ../spacefm-wiki || exit 1
        git status
        echo ">>> git pull origin master"
        git pull origin master
        echo ">>> cd '$curdir'"
        cd "$curdir" || exit 1
    fi
fi

# autoreconf
echo
echo "Running autoreconf..."
rm -f configure aclocal.m4 config.log config.status Makefile Makefile.in
#echo ">>> NOCONFIGURE=x ./autogen.sh"
#NOCONFIGURE=x ./autogen.sh
echo ">>> autoreconf"
autoreconf || exit 1

# configure
echo
echo "Running configure..."
echo ">>> env CFLAGS=-O3 ./configure --prefix=/usr"
env CFLAGS=-O3 ./configure --prefix=/usr
err=$?
rm -rf autom4te.cache
if [ $err -ne 0 ]; then
	echo "$me_name: configure returned error $err" 1>&2
	exit 1
fi

# make clean and test
echo
echo "Testing make..."
echo ">>> make clean"
make clean || exit 1
echo ">>> make $make_opt"
make $make_opt || exit 1
echo ">>> make clean"
make clean || exit 1
echo

# commit
echo "Release is ready to be commited and merged to $master."
echo
echo ">>> git status"
git status
echo "(all unstaged changes will be added - new files are not added)"
echo
msg_def="release $newver"
echo -n "Enter commit message (blank='$msg_def' or custom or q=quit): "
read msg
if [ "$msg" != "q" ]; then
	if [ "$msg" = "" ]; then
		msg="$msg_def"
	fi
	echo
	echo ">>> git commit -am '$msg'"
	git commit -am "$msg" || exit 1
else
	echo
    echo "Run this script again to complete."
	exit 1
fi

# merge to master
echo
echo "Merging to $master..."
echo ">>> git checkout $master"
git checkout $master || exit 1
echo ">>> git merge $next"
git merge $next || exit 1

# signed tag
echo
echo "Adding signed tag..."
while true; do
    echo
    echo -n "Enter signing keyid, or 'skip' [$keyid]: "
    read usekeyid
    if [ "$usekeyid" = "q" ]; then
        echo "Aborted." 1>&2
        exit 1
    elif [ "$usekeyid" = "skip" ]; then
        echo "No release tag was added."
        break
    elif [ -z "$usekeyid" ]; then
        usekeyid="$keyid"
    fi
    keyid="$usekeyid"
    echo ">>> git tag -u '$keyid' -s '$newver' -m 'release $newver'"
    git tag -u "$keyid" -s "$newver" -m "release $newver"
    if [ $? -eq 0 ]; then
        break
    fi
    echo "Retry... (enter q to quit)"
done

# push master
echo
echo "Pushing $master..."
echo
echo ">>> git gc"
git gc || exit 1
echo ">>> git push --tags origin $master"
git push --tags origin $master || exit 1

# push gh-pages
if [ -d ../spacefm-gh-pages ]; then
    echo
    echo "Commiting and pushing ../spacefm-gh-pages..."
    echo
    cd ../spacefm-gh-pages || exit 1
    echo ">>> git status"
    git status
    echo
    msg_def="release $newver"
    echo -n "Enter commit message (blank='$msg_def' or custom or skip=skip): "
    read msg
    if [ "$msg" != "skip" ]; then
        if [ "$msg" = "" ]; then
            msg="$msg_def"
        fi
        echo
        echo ">>> git add -A"
        git add -A
        echo ">>> git commit -am '$msg'"
        git commit -am "$msg" || exit 1
        echo ">>> git push origin gh-pages"
        git push origin gh-pages || exit 1
    fi
    cd "$curdir" || exit 1
fi

# get next version
echo
echo "Starting next version..."
echo
echo -n "Enter next version [${newver}+next]: "
read nextver
if [ -z "$nextver" ]; then
    nextver="${newver}+next"
elif [ "$nextver" = "q" ]; then
    echo "Aborted." 1>&2
    exit 1
fi

# start next version
echo ">>> git checkout $next"
git checkout $next || exit 1
echo ">>> git merge $master"
git merge $master || exit 1

# set configure version
echo "Changing $configure version $newver to $nextver..."
#AC_INIT([spacefm], [1.0.0+next])
sed -i "s/^AC_INIT(\[$prog\], \[[0-9]\..*\])/AC_INIT(\[$prog\], \[$nextver\])/" $configure

# test configure version changed
testver=`grep -m 1 "^AC_INIT(\[$prog\], \[" "$configure" \
			| sed "s/AC_INIT(\[$prog\], \[\(.*\)\])/\1/"`
if [ "$testver" != "$nextver" ]; then
	echo "$me_name: change of version in $configure failed" 1>&2
	exit 1
fi

# set distros/debian/changelog version
echo "Setting next version in distros/debian/changelog..."
cat << EOF > "distros/debian/changelog"	
$prog ($nextver-1) unstable; urgency=low

  * release

 -- $debian_id  $(date -uR)
EOF
if [ $? -ne 0 ]; then
	echo "$me_name: error writing distros/debian/changelog" 1>&2
	exit 1
fi

# autoreconf
echo
echo "Running autoreconf..."
rm -f configure aclocal.m4 config.log config.status Makefile Makefile.in
#echo ">>> NOCONFIGURE=x ./autogen.sh"
#NOCONFIGURE=x ./autogen.sh
echo ">>> autoreconf"
autoreconf || exit 1

# configure
echo
echo "Running configure..."
echo ">>> env CFLAGS=-O3 ./configure --prefix=/usr"
env CFLAGS=-O3 ./configure --prefix=/usr
err=$?
rm -rf autom4te.cache
if [ $err -ne 0 ]; then
	echo "$me_name: configure returned error $err" 1>&2
	exit 1
fi

# make clean
echo
echo ">>> make clean"
make clean || exit 1

# commit
echo "Next version is ready to be commited."
msg_def="start $nextver"
echo
echo ">>> git status"
git status
echo "(all unstaged changes will be added)"
echo
echo -n "Enter commit message (blank='$msg_def' or custom or q=quit): "
read msg
if [ "$msg" != "q" ]; then
	if [ "$msg" = "" ]; then
		msg="$msg_def"
	fi
	echo
	echo ">>> git commit -am '$msg'"
	git commit -am "$msg" || exit 1
    echo ">>> git push origin $next"
    git push origin $next || exit 1
else
	echo
	echo "SKIPPING $next commit and push" 1>&2
	exit 1
fi

echo
echo "$me_name: Done."