#!/usr/bin/env sh
# XDG Base Directory Specification
#
# Sets up necessary environment variables for XDG convention,
# and those that applications obey for their environments.
#
# Thank you remeberYou for the idea
# see: https://github.com/rememberYou/dotfiles/blob/master/sh/.config/sh/xdg
#
# Additionally, home directories are set using the XDG specification,
# if the xdg-user-dirs module is enabled.
#
# Shellcheck will complain about setting permissions for the directories
# unless it is ignored https://github.com/koalaman/shellcheck/wiki/SC2174
# shellcheck disable=SC2174

# http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
test "$XDG_CACHE_HOME" || export XDG_CACHE_HOME="$HOME/.cache"
test "$XDG_CONFIG_HOME" || export XDG_CONFIG_HOME="$HOME/.config"
test "$XDG_DATA_HOME" || export XDG_DATA_HOME="$HOME/.local/share"
test "$XDG_STATE_HOME" || export XDG_STATE_HOME="$HOME/.local/state"

# Desktop environment XDG variables - mimics `xdg-user-dirs` settings, only lowercased and not localized
test "$XDG_DESKTOP_DIR" || export XDG_DESKTOP_DIR="$HOME/desktop"
test "$XDG_DOCUMENTS_DIR" || export XDG_DOCUMENTS_DIR="$HOME/documents"
test "$XDG_DOWNLOAD_DIR" || export XDG_DOWNLOAD_DIR="$HOME/downloads"

export XDG_MEDIA_DIR="$HOME/media"
export XDG_MUSIC_DIR="$XDG_MEDIA_DIR/audio/music"
export XDG_PICTURES_DIR="$HOME/pictures"
export XDG_VIDEOS_DIR="$HOME/videos"

## Non-Standard additions
# non-standard, is added to path to enable execution of any files herein
test "$XDG_PROJECTS_DIR" || export XDG_PROJECTS_DIR="$HOME/projects"
test "$XDG_BIN_HOME" || export XDG_BIN_HOME="$HOME/.local/bin"
# anything on BIN_HOME should be executable form anywhere
export PATH="$PATH:$XDG_BIN_HOME"

xdg_isThere() {
    if [ -e "$1" ] || [ -h "$1" ]; then
        true
    else
        false
    fi
}

xdg_makeForUser() {
    mkdir -p "$1"
    chmod 0700 "$1"
}

if [ -h "$XDG_MEDIA_DIR" ] && [ ! -e "$XDG_MEDIA_DIR" ]; then
    rm "$XDG_MEDIA_DIR"
    xdg_makeForUser "$XDG_MEDIA_DIR"
fi

## ensure directories exist
xdg_isThere "$XDG_BIN_HOME" || xdg_makeForUser "$XDG_BIN_HOME"
xdg_isThere "$XDG_CACHE_HOME" || xdg_makeForUser "$XDG_CACHE_HOME"
xdg_isThere "$XDG_CONFIG_HOME" || xdg_makeForUser "$XDG_CONFIG_HOME"
xdg_isThere "$XDG_DATA_HOME" || xdg_makeForUser "$XDG_DATA_HOME"

# create xdg-user-dirs if necessary
xdg_isThere "$XDG_DESKTOP_DIR" || xdg_makeForUser "$XDG_DESKTOP_DIR"
xdg_isThere "$XDG_DOCUMENTS_DIR" || xdg_makeForUser "$XDG_DOCUMENTS_DIR"
xdg_isThere "$XDG_DOWNLOAD_DIR" || xdg_makeForUser "$XDG_DOWNLOAD_DIR"
xdg_isThere "$XDG_MUSIC_DIR" || xdg_makeForUser "$XDG_MUSIC_DIR"
xdg_isThere "$XDG_PICTURES_DIR" || xdg_makeForUser "$XDG_PICTURES_DIR"
xdg_isThere "$XDG_VIDEOS_DIR" || xdg_makeForUser "$XDG_VIDEOS_DIR"
xdg_isThere "$XDG_PROJECTS_DIR" || xdg_makeForUser "$XDG_PROJECTS_DIR"

unset -f xdg_isThere xdg_makeForUser

## Applications that can be set through environment variables
export ANDROID_HOME="$XDG_DATA_HOME/android"
export ATOM_HOME="$XDG_DATA_HOME/atom"
export CARGO_HOME="$XDG_DATA_HOME/cargo"
export GEM_HOME="$XDG_DATA_HOME/gem"
export GEM_SPEC_CACHE="$XDG_CACHE_HOME/gem"
export GNUPGHOME="$XDG_DATA_HOME/gnupg"
export GRADLE_USER_HOME="$XDG_DATA_HOME/gradle"
export GRIPHOME="$XDG_CONFIG_HOME/grip"
export IMAPFILTER_HOME="$XDG_CONFIG_HOME/imapfilter"
export IPYTHONDIR="$XDG_CONFIG_HOME/ipython"
export KDEHOME="$XDG_CONFIG_HOME/kde"
export KODI_DATA="$XDG_DATA_HOME/kodi"
export LESSHISTFILE="XDG_STATE_HOME/lesshst"
export MPLAYER_HOME="$XDG_CONFIG_HOME/mplayer"
export NODE_REPL_HISTORY="$XDG_STATE_HOME/node_repl_history"
export NVM_DIR="$XDG_DATA_HOME/nvm"
if [ ! -e "$PYTHONSTARTUP" ]; then
    mkdir -p "$XDG_CONFIG_HOME/python"
    touch "$PYTHONSTARTUP"
fi
export PYTHONSTARTUP="$XDG_CONFIG_HOME/python/pythonrc"
export SQLITE_HISTORY="$XDG_STATE_HOME/sqlite_history"
export TEXMFVAR="$XDG_CACHE_HOME/texlive/texmf-var"
export TMUX_PLUGIN_MANAGER_PATH="$XDG_DATA_HOME/tmux"
export VAGRANT_HOME="$XDG_DATA_HOME/vagrant"
export WINEPREFIX="$XDG_DATA_HOME/wine"
export ZDOTDIR="$XDG_CONFIG_HOME/zsh"
export _JAVA_OPTIONS=-Djava.util.prefs.userRoot="$XDG_CONFIG_HOME"/java

alias yarn='yarn --use-yarnrc "$XDG_CONFIG_HOME/yarn/config"'
alias wget='wget --hsts-file="$XDG_STATE_HOME/wget-hsts"'