#!/bin/bash
BuildDir=$HOME/Src/Cinnamon
 
CleanForBuild () {
for debpkg in cinnamon cinnamon-bluetooth cinnamon-common cinnamon-control-center cinnamon-control-center-data cinnamon-dbg cinnamon-desktop-data cinnamon-screensaver cinnamon-session cinnamon-session-common cinnamon-settings-daemon cinnamon-settings-daemon-dev cinnamon-translations cjs gir1.2-cinnamondesktop-3.0 gir1.2-muffin-3.0 gir1.2-nemo-3.0 libcinnamon-control-center1 libcinnamon-control-center-dev libcinnamon-desktop0 libcinnamon-desktop-dev libcjs0c libcjs-dev libmuffin0 libmuffin-dev libnemo-extension1 libnemo-extension-dev muffin muffin-common muffin-dbg nemo nemo-compare nemo-data nemo-dbg nemo-dropbox nemo-fileroller nemo-media-columns nemo-pastebin nemo-preview nemo-rabbitvcs nemo-seahorse nemo-share python-nemo cinnamon-bluetooth cinnamon-control-center cinnamon-screensaver cinnamon-session cinnamon-settings-daemon libcinnamon-control-center1 libcjs0c libmuffin0 nemo-data;do sudo apt-get remove -y $debpkg;done
}
# ^^ not proud of that... I put no effort into it
# I just stuffed it in one day
# 

DEBS=${BuildDir}/DEBS-$(date +%F)
[[ -e "$DEBS" ]] || CleanForBuild
mkdir -p ${DEBS} 2>/dev/null
BuildStatus=${DEBS}/.BuildStatus

GPGKey="your key here" # or just don't bother
# change the -k${GPGKey} below ( see compile() ) to -uc
# -uc will prevent 'error' as dpkg-buildpackage won't attempt to sign change files


CinnamonRepo=git://github.com/linuxmint/

BuildTools(){
sudo /usr/bin/apt-get update
sudo /usr/bin/apt-get install -y build-essential devscripts git dpkg-dev && \
touch .build-essentialDone || exit 1
}

gitclean(){
# had some issues where deb scripts messed with stuff 
git checkout -- $(git status | awk '$2 == "modified:"{printf $3" "}')
}
 
GitCO(){
[[ -d $GitRepo ]] || git clone ${CinnamonRepo}${GitRepo}.git \
                  && ( pushd ${GitRepo} && gitclean && git pull origin )
return $?
}
CheckBuildDeps(){
echo "Checking BuildDeps"
BuildDeps="$(dpkg-checkbuilddeps 2>&1 | awk 'BEGIN{RS=")"};{sub(/dpkg.*Unmet build dependencies:/,"",$0);gsub(/ \(>=.*$/,"",$0);print
f $0}')"
[[ "${BuildDeps}" == "" ]] || sudo /usr/bin/apt-get install -y --force-yes ${BuildDeps}
return $?
}
Compile(){
dpkg-buildpackage -tc -b -k${GPGKey} -j$(grep ^processor /proc/cpuinfo | wc -l)
return $?
}
Install(){
debsign ../*.deb
mv ../*.{deb,changes} ${DEBS}/
pushd "${DEBS}"
    dpkg-scanpackages . /dev/null | gzip -9c > Packages.gz
popd
sudo apt-get update -o Dir::Etc::sourcelist="sources.list.d/Cinnamon.list" -o Dir::Etc::sourceparts="-" -o APT::Get::List-Cleanup="0"
return $?
}

# 

mkdir -p ${BuildDir}
cd ${BuildDir}
[[ ! -e .build-essentialDone ]] && BuildTools
sudo sh -c "echo deb file:${DEBS}/ ./ > /etc/apt/sources.list.d/Cinnamon.list"

# Note, you may need to add/remove stuff from this list
# or possibly reorder things 

for GitRepo in \
               cinnamon-desktop \
               muffin \
               cjs \
               cinnamon-translations \
               cinnamon-session \
               nemo \
               cinnamon-settings-daemon \
               cinnamon-control-center \
               Cinnamon \
               cinnamon-screensaver \
               cinnamon-bluetooth \
               nemo-extensions \
            ;do
    grep -q "^${GitRepo}$" "${BuildStatus}" && continue
    GitCO || exit 1
    case $GitRepo in
      nemo-extensions)
        pushd $GitRepo || exit 1
        for extension in $(find ./ -maxdepth 1 -mindepth 1 -type d ! -name .git );do
            grep -q "^${extension//\.\/}$" "${BuildStatus}" && continue
            #[[ $extension =~ nemo-preview ]] && continue
            pushd ${extension}
               CheckBuildDeps || exit 1
               Compile && Install || ( [[ $extension =~ nemo-preview ]] && continue || exit 1 )
            # nemo-preview kept breaking 
            popd
            echo ${extension//\.\/} >> "${BuildStatus}"
        done
      ;;
      cinnamon-translations)
        pushd $GitRepo || exit 1
        CheckBuildDeps || exit 1
        Compile && Install || exit 1
      ;;
      *)
        pushd $GitRepo || exit 1
        CheckBuildDeps || exit 1
        Compile && Install || exit 1
      ;;
    esac
    popd
    echo $GitRepo >> $BuildStatus
done
sudo /usr/bin/apt-get install -y --force-yes cinnamon muffin nemo cinnamon-bluetooth cinnamon-control-center cinnamon-screensaver cinnamon-session cinnamon-settings-daemon libcinnamon-control-center1 libcjs0c libmuffin0 nemo-data
 
exit 0