#!/bin/sh

# wget -O new_home_directory 'http://git.donarmstrong.com/?p=bin.git;a=blob_plain;f=new_home_directory;hb=HEAD'
# sh new_home_directory;


# makes a new home directory; defaults to one that does not use ssh
GIT_BASE=https://git.donarmstrong.com/

if [ "$1" = "ssh" ]; then
    GIT_BASE=git+ssh://git.donarmstrong.com/srv/git/
fi;

cd ~;

for pkg in mr vcsh; do
    if ! which $pkg >/dev/null 2>&1; then
        echo "Package $pkg doesn't exist; getting it"
        mkdir -p local_packages/$pkg;
        (cd local_packages/$pkg;
         deb_name=$pkg
         if [ $pkg == "mr"; ]; then
             deb_name=myrepos
         fi;
         if which apt-get >/dev/null 2>&1; then
             apt-get download $deb_name;
             dpkg-deb -x ${deb_name}*.deb .
         else
             # ok, this host isn't Debian.
             if [ "$pkg" == "mr" ]; then
                 wget http://http.debian.net/debian/pool/main/m/myrepos/myrepos_1.20160123_all.deb
                 ar p myrepos*.deb data.tar.xz|xz --decompress|tar -x
             elif [ "$pkg" == "vcsh" ]; then
                 wget http://http.debian.net/debian/pool/main/v/vcsh/vcsh_1.20151229-1_all.deb
                 ar p vcsh*.deb data.tar.xz|xz --decompress|tar -x
             fi;
             
         fi;
        );
        mkdir -p bin
        ln ~/local_packages/$pkg/usr/bin/$pkg bin/$pkg -s
        if [ "$pkg" == "mr" ]; then
            echo -e "[DEFAULT]\ninclude = cat ~/local_packages/$pkg/usr/share/mr/*" >> ~/.mrconfig
        fi;
        PATH="$HOME/local_packages/$pkg/usr/bin/:$PATH"
        export PATH
    fi;
done;

# .config is currently a link; this indicates that we are dealing with my old configuration system
for a in .config; do
    if [ -L ${a} ]; then
        mv ${a} ${a}_bak;
        mkdir -p ${a};
        cp -r ${a}_bak/* ${a}/;
    fi;
done;

for a in lib bin; do 
    if [ -d ${a}/.svn ]; then
        mv ${a} ${a}.bak
    fi;
done;

if [ "$1" = "ssh" ]; then
    mkdir -p .config/;
    (cd .config/;
        git checkout git+ssh://git.donarmstrong.com/srv/git_private/mr.git
    );
    mr --config ~/.config/mr/config.d/base.git checkout
else 
    vcsh clone $GIT_BASE/mr.git mr;
fi;

mr checkout;

for a in .zsh .ssh; do
    if [ -L ${a} ]; then
        mv ${a} ${a}_bak;
        mr up;
        mkdir -p ${a};
        cp -r ${a}_bak/* ${a}/;
    fi;
done;

if [ ! -e .ssh/authorized_keys ]; then
    (cd .ssh/; ln authorized_keys_default authorized_keys -s; )
fi;

if [ ! -e ~/bin/.git ]; then
    # OK, bin must have already existed; check it out directly
    mv bin bin.tmp;
    PATH=~/bin.tmp:$PATH mr checkout bin;
    mv bin.tmp/* bin;
    rmdir bin.tmp;
fi;

# do some cleanup; you might want to run git reset --hard in some
# cases; we don't do so automatically in case there are local changes
# that should be kept
mr run git reset --soft origin/master
mr up

# move mr and vcsh to ~/bin if they are in ~/bin.bak
for pkg in mr vcsh; do
    if [ -e ~/bin.bak/$pkg ]; then
        mv ~/bin.bak/$pkg ~/bin/;
    fi;
done;