#!/bin/sh

#SCRIPT=$(readlink -f "$0")
#RC_PATH=$(dirname "$SCRIPT")
RC_PATH=$(cd "$(dirname "$0")"; pwd)
HOST=$(hostname)
XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-$HOME/.config}
XDG_DATA_HOME=${XDG_DATA_HOME:-$HOME/.local/share}

# List of the config files to install
FILES="vimrc zshrc gitconfig vim gitignore_global git_user ctags.d mailcap xinitrc"
CONF_DIR="config"
DATA_DIR="data"

if [ ! -e "$HOME/.git_user" ]; then
    cp "$RC_PATH/git_user.def" "$RC_PATH/git_user"
    sed -i -e "s/{username}/$USER/" "$RC_PATH/git_user"
    sed -i -e "s/{email}/$USER@$HOST/" "$RC_PATH/git_user"
fi

# Init or update submodules
cd "$RC_PATH" || exit
git submodule update --init --recursive
cd - > /dev/null || exit

# Create symbolic links in the user's home dir
for file in $FILES
do
    if [ ! -e "$HOME/.${file}" ]; then
        ln -s "${RC_PATH}/${file}" "$HOME/.${file}"
    # Only warn if an actual file exist, else we suppose it is from a previous install
    elif [ ! -L "$HOME/.$file" ]; then
        >&2 echo "File $HOME/.$file exists. Keeping old version."
    fi
done

mkdir -p "$XDG_CONFIG_HOME"
mkdir -p "$XDG_DATA_HOME"
# https://github.com/koalaman/shellcheck/wiki/SC2156
find "$RC_PATH/$CONF_DIR" -mindepth 1 -maxdepth 1 -type d \
	-exec sh -c 'ln -s "$2" "$1" 2> /dev/null || ( link="$1/$(basename "$2")"; test -L "$link" || >&2 echo "Folder $link exists. Keeping old version.")' _ "$XDG_CONFIG_HOME" '{}' \;
find "$RC_PATH/$DATA_DIR" -mindepth 1 -maxdepth 1 -type d \
	-exec sh -c 'ln -s "$2" "$1" 2> /dev/null || ( link="$1/$(basename "$2")"; test -L "$link" || >&2 echo "Folder $link exists. Keeping old version.")' _ "$XDG_DATA_HOME" '{}' \;