# THIS IS CURRENTLY EXPERIMENTAL.  REVIEW AND TEST FIRST.  NEVER RUN ON MAIN
# MACHINE WITHOUT A BACKUP OF VIMFILES AND DOTFILES


# Links configuration files to the ones listed here.  Backup and remove your's
# and then run this script while inside repo directory.
# 
# In Windows it has to be run with git-bash.
#  
# Note: This solution is lazy and causes some problems.  Like not being able to
#       track vim pluggins.
#
# As always, ArchLinux's Wiki has a great article explaining dotfiles and how
# people usually manage them.
# https://wiki.archlinux.org/title/Dotfiles


# FIXME: This is broken since I moved the directories.  Change all $PWD with 
#        $PWD/config and it should work.  But make this simpler.  The "copy"
#        mode is useless.  Each user should have a copy of this and then use the
#        "slink" mode.  That way you can keep track of changes made, and then
#        even add a branch (e.g., pulse15, x220) to the repo.
exit


# Config
# ======

mode=$1             # copy,slink


# Prepare
# =======

# HOME variable must be available

if [[ -z $XDG_CONFIG_HOME ]]; then
    XDG_CONFIG_HOME="$HOME/.config"
    mkdir -p $XDG_CONFIG_HOME
fi

if [[ $mode = "--help" ]]; then 
    echo "You might want to first run: $0 echo"
    echo "Revise the output"
    echo "And only then run: $0 slink"
    exit
elif [[ $mode = "copy" ]]; then 
    cp_or_ln="cp"
    echo Why?  Custom modifications will be difficult to track.
    echo Maybe not a good idea.  Good bye.
    exit
elif [[ $mode = "slink" ]]; then 
    cp_or_ln="ln -siv"              # if you are fearless add the `-f` option
elif [[ $mode = "echo" ]]; then
    cp_or_ln="echo ln -siv"
else
    echo "Usage: $0 copy|slink|echo"
    exit
fi

prompt() {
    read -p "Install $1 configuration files? [Y/n/e(exit)] " yesno
    yesno=$(echo $yesno | tr '[:upper:]' '[:lower:]')
    case $yesno in
        y | yes | "" ) 
            return 0;;
        e | exit )
            exit;;
        * ) 
            return 1;;
    esac
}


# Install
# =======

# FIXME: If $PWD has spaces in it, this might fail.

# Filewise
# --------

if prompt "bash"; then
    eval $cp_or_ln " ${PWD}/bash/bash_profile     $HOME/.bash_profile"
    eval $cp_or_ln " ${PWD}/bash/bashrc           $HOME/.bashrc"
    eval $cp_or_ln " ${PWD}/bash/bash_aliases     $HOME/.bash_aliases"
    eval $cp_or_ln " ${PWD}/bash/inputrc          $HOME/.inputrc"
fi

if prompt "vim"; then
    # `~/.vimrc` takes priority over `~/.vim/vimrc`.  Remove the former if it
    # exists.
    #
    # In windows it's `%userprofile%/vimfiles/`
    
    VIMFILES="$HOME/.vim"
    mkdir -p $VIMFILES/{undo,swap,backup,plugins}
    chmod 0700 $VIMFILES/swap

    eval $cp_or_ln " ${PWD}/vim/vimrc           $VIMFILES/vimrc"
    eval $cp_or_ln " ${PWD}/vim/fun.vim         $VIMFILES/fun.vim"
fi

if prompt "Xorg"; then
    eval $cp_or_ln " ${PWD}/xorg/xinitrc        $HOME/.xinitrc"
    eval $cp_or_ln " ${PWD}/xorg/xbindkeysrc    $HOME/.xbindkeysrc"
fi

# Directorywise
# -------------

if prompt "nvim"; then
    eval $cp_or_ln " ${PWD}/nvim                $XDG_CONFIG_HOME"
fi

if prompt "tmux"; then
    eval $cp_or_ln " ${PWD}/tmux                $XDG_CONFIG_HOME"
fi

if prompt "git"; then
    eval $cp_or_ln " ${PWD}/git                 $XDG_CONFIG_HOME"
    eval $cp_or_ln " ${PWD}/git/git-prompt.sh   $HOME/.git-prompt.sh"
fi


if prompt "zathura"; then
    eval $cp_or_ln " ${PWD}/zathura             $XDG_CONFIG_HOME"
fi

if prompt "mpv"; then
    eval $cp_or_ln " ${PWD}/mpv                 $XDG_CONFIG_HOME"
fi

echo "all done :)"