#! /usr/bin/env bash

REPO_DIR="$(dirname "$(readlink -m "${0}")")"
source "${REPO_DIR}/core.sh"

usage() {
cat << EOF
Usage: $0 [OPTION]...

OPTIONS:
  -d, --dest DIR          Specify destination directory (Default: $DEST_DIR)
  -n, --name NAME         Specify theme name (Default: $THEME_NAME)
  -t, --theme VARIANT     Specify theme color variant(s) [default|purple|pink|red|orange|yellow|green|grey|all] (Default: blue)
  -c, --color VARIANT...  Specify color variant(s) [standard|light|dark] (Default: All variants)s)
  -s, --size VARIANT      Specify size variant [standard|compact] (Default: All variants)
  --tweaks                Specify versions for tweaks [solid|compact|black|primary] (Options can mix)
                          1. solid:    no transparency panel variant
                          2. compact:  no floating panel variant
                          3. black:    full black variant
                          4. primary:  Change radio icon checked color to primary theme color (Default is Green)
  --shell                 install gnome-shell version [38|40|42]
                          1. 38:       gnome-shell version < 40.0
                          2. 40:       gnome-shell version = 40.0
                          3. 42:       gnome-shell version = 42.0
  -h, --help              Show help
EOF
}

themes=()
colors=()
sizes=()

while [[ "$#" -gt 0 ]]; do
  case "${1:-}" in
    -d|--dest)
      dest="$2"
      mkdir -p "$dest"
      shift 2
      ;;
    -n|--name)
      _name="$2"
      shift 2
      ;;
    --shell)
      shift
      for variant in $@; do
        case "$variant" in
          38)
            shell="32-8"
            shift
            ;;
          40)
            shell="40-0"
            shift
            ;;
          42)
            shell="42-0"
            shift
            ;;
          -*)
            break
            ;;
          *)
            echo "ERROR: Unrecognized shell variant '$1'."
            echo "Try '$0 --help' for more information."
            exit 1
            ;;
        esac
      done
      ;;
    --tweaks)
      shift
      for variant in $@; do
        case "$variant" in
          solid)
            opacity="solid"
            shift
            ;;
          compact)
            panel="compact"
            shift
            ;;
          black)
            blackness="true"
            shift
            ;;
          primary)
            primary="true"
            shift
            ;;
          -*)
            break
            ;;
          *)
            echo "ERROR: Unrecognized tweaks variant '$1'."
            echo "Try '$0 --help' for more information."
            exit 1
            ;;
        esac
      done
      ;;
    -t|--theme)
      accent='true'
      shift
      for variant in "$@"; do
        case "$variant" in
          default)
            themes+=("${THEME_VARIANTS[0]}")
            shift
            ;;
          purple)
            themes+=("${THEME_VARIANTS[1]}")
            shift
            ;;
          pink)
            themes+=("${THEME_VARIANTS[2]}")
            shift
            ;;
          red)
            themes+=("${THEME_VARIANTS[3]}")
            shift
            ;;
          orange)
            themes+=("${THEME_VARIANTS[4]}")
            shift
            ;;
          yellow)
            themes+=("${THEME_VARIANTS[5]}")
            shift
            ;;
          green)
            themes+=("${THEME_VARIANTS[6]}")
            shift
            ;;
          grey)
            themes+=("${THEME_VARIANTS[7]}")
            shift
            ;;
          all)
            themes+=("${THEME_VARIANTS[@]}")
            shift
            ;;
          -*)
            break
            ;;
          *)
            echo "ERROR: Unrecognized theme variant '$1'."
            echo "Try '$0 --help' for more information."
            exit 1
            ;;
        esac
      done
      ;;
    -c|--color)
      shift
      for variant in "$@"; do
        case "$variant" in
          standard)
            colors+=("${COLOR_VARIANTS[0]}")
            shift
            ;;
          light)
            colors+=("${COLOR_VARIANTS[1]}")
            shift
            ;;
          dark)
            colors+=("${COLOR_VARIANTS[2]}")
            shift
            ;;
          -*)
            break
            ;;
          *)
            echo "ERROR: Unrecognized color variant '$1'."
            echo "Try '$0 --help' for more information."
            exit 1
            ;;
        esac
      done
      ;;
    -s|--size)
      shift
      for variant in "$@"; do
        case "$variant" in
          standard)
            sizes+=("${SIZE_VARIANTS[0]}")
            shift
            ;;
          compact)
            sizes+=("${SIZE_VARIANTS[1]}")
            shift
            ;;
          -*)
            break
            ;;
          *)
            echo "ERROR: Unrecognized size variant '$1'."
            echo "Try '$0 --help' for more information."
            exit 1
            ;;
        esac
      done
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "ERROR: Unrecognized installation option '$1'."
      echo "Try '$0 --help' for more information."
      exit 1
      ;;
  esac
done

if [[ "${#themes[@]}" -eq 0 ]] ; then
  themes=("${THEME_VARIANTS[0]}")
fi

if [[ "${#colors[@]}" -eq 0 ]] ; then
  colors=("${COLOR_VARIANTS[@]}")
fi

if [[ "${#sizes[@]}" -eq 0 ]] ; then
  sizes=("${SIZE_VARIANTS[@]}")
fi

install_theme && link_theme

echo
echo "Done."