change_theme.sh

#!/bin/sh

I3_THEME_DIR="$HOME/myConfigs/i3/colors"
I3_THEME_FILE="$HOME/.i3/config.colors"

VIM_THEME_DIR="$HOME/myConfigs/vim/themes"
VIM_THEME_FILE="$HOME/.vim/vimrc.colortheme"

X11_THEME_DIR="$HOME/myConfigs/X11/themes/color-schemes"
X11_THEME_FILE="$HOME/.Xresources.theme"
BASE16_THEME_SHELL="$HOME/.base16rc"

MUTT_THEME_DIR="$HOME/myConfigs/mail/mutt/themes"
MUTT_THEME_FILE="$HOME/.mutt/theme.muttrc"

GREP="grep -q"

change_theme()
{
  if [ "$(uname)" = 'Linux' ]; then
    if [ ! -e "$HOME"/.Xresources.font ]; then
      "$HOME"/myConfigs/change_font.sh
    fi

    echo "Setting theme to '$1'..."

    if [ -e "$VIM_THEME_DIR"/vimrc.theme."$1" ]; then
      ln -sfnv "$VIM_THEME_DIR"/vimrc.theme."$1" "$VIM_THEME_FILE"
    fi

    if [ -e "$I3_THEME_DIR"/_config."$1" ]; then
      ln -sfnv "$I3_THEME_DIR"/_config."$1" "$I3_THEME_FILE"
      i3bang
    fi

    BASE16=
    if echo "$1" | $GREP "^base16"; then
      ln -sfnv "$X11_THEME_DIR"/"$1".dark.256.xresources "$X11_THEME_FILE"
      ln -sfnv "$X11_THEME_DIR"/"$1".dark.sh "$BASE16_THEME_SHELL"
      BASE16=".dark.256"
    else
      ln -sfnv "$X11_THEME_DIR"/"$1".xresources "$X11_THEME_FILE"
      rm -f "$BASE16_THEME_SHELL"
    fi

    if [ "$DISTRO" = 'Ubuntu' ]; then
      # Check if mutt is installed or not
      PACKAGE=$(dpkg -l | grep mutt)
      if [ -n "$PACKAGE" ]; then
        ln -sfnv "$MUTT_THEME_DIR"/"$1"$BASE16.muttrc "$MUTT_THEME_FILE"
      fi
    fi

    echo "Reloading xresources..."
    xrdb -load ~/.Xresources
  else
    echo 'Only Linux is supported.'
  fi
}

echo "[1] Gruvbox"
echo "[2] Jellybeans"
echo "[3] Sourcerer"
echo "[4] Base16-Default"
echo "[5] Base16-Atelier Seaside"
echo "[6] Base16-Atelier Sulphurpool"
echo "[7] Base16-Bespin"
echo "[8] Base16-Solarized Dark"
echo "[9] Base16-Tomorrow"
echo "[0] Base16-Twilight"
echo "[a] Dracula"
echo "[b] Manjaro-i3"
echo "[c] Solarized-Dark"
printf "Choose theme[3]: "
read -r number

if [ -z "$number" ]; then
  number='3'
fi

if echo "$number" | grep -iq "^1"; then
  change_theme gruvbox
elif echo "$number" | grep -iq "^2"; then
  change_theme jellybeans
elif echo "$number" | grep -iq "^3"; then
  change_theme sourcerer
elif echo "$number" | grep -iq "^4"; then
  change_theme base16-default
elif echo "$number" | grep -iq "^5"; then
  change_theme base16-atelierseaside
elif echo "$number" | grep -iq "^6"; then
  change_theme base16-ateliersulphurpool
elif echo "$number" | grep -iq "^7"; then
  change_theme base16-bespin
elif echo "$number" | grep -iq "^8"; then
  change_theme base16-solarized
elif echo "$number" | grep -iq "^9"; then
  change_theme base16-tomorrow
elif echo "$number" | grep -iq "^0"; then
  change_theme base16-twilight
elif echo "$number" | grep -iq "^[a|A]$"; then
  change_theme dracula
elif echo "$number" | grep -iq "^[b|B]$"; then
  change_theme manjaro-i3
elif echo "$number" | grep -iq "^[c|C]$"; then
  change_theme solarized
else
  echo "Nahh!"
  exit
fi

echo "Done."