#!/usr/bin/env bash
#
# A script to create Telegram palettes that use colors generated by pywal/wal
# or from a different file containing the hex colors (see the README.md for the
# format of the file).

# Help function called by the --help|-h parameter.

set -E
trap '[ "$?" -ne 77 ] || exit 77' ERR

help() {
  cat <<EOF
A script to create Telegram palettes that use colors generated by pywal/wal
or from a different file containing the hex colors (see the README.md for the
format of the file).

Usage: 
  $0 -w | --wal [-t|--tiled] [-b|--background=<path_to_background_image>] [-d|--destination=<destination_path>] [-g|--gaussian-blur=<blur_argument>] [-r|--restart]
  $0 -p | --palette=</path/to/palette> [-t|--tiled] [-b|--background=<path_to_background_image>] [-d|--destination=<destination_path>] [-g|--gaussian-blur=<blur_argument>] [-r|--restart]
  $0 -h | --help

Options:
  -h                  Show command usage.
  --help              Show this help screen.
  -w --wal            Generate the color palette using the colors generated
                      by pywal/wal (Default).
  -p --palette        Use colors from an sh file to generate the color palette.
  -t --tiled          Use a unified color background instead of an image.
  -b --background     Use a specific image as background.
  -d --destination    Specify a destination folder for the generated palette.
                      (Default: ~/.cache/wal-telegram)
  -g --gaussian-blur  Blur the background image, takes a blur argument.
                      see https://legacy.imagemagick.org/Usage/blur/#blur_args.
                      -g takes no argument and uses the default value.
                      (Default: 0x16)
  -r --restart        Restart the telegram app after generation.
EOF
}
usage() {
  cat <<EOF
Usage:
  $0 --wal [--tiled] [--background=<path_to_background_image>] [--destination=<destination_path>] [-g|--gaussian-blur=<blur_argument (default: 0x16)>] [-r|--restart]
  $0 --palette=<path_to_sh_file> [--tiled] [--background=<path_to_background_image>] [--destination=<destination_path>] [-g|--gaussian-blur=<blur_argument (default: 0x16)>] [-r|--restart]
EOF
}
exit_abnormal(){
  usage
  exit 1
}

script_dir=$(readlink -f ${0} | sed "s#/$(basename ${0})##")

# shellcheck source=/dev/null
command -v zip > /dev/null || (printf '%b\n' "\\e[1;31m::\\e[0m \\e[1;37mA zipping utility is needed for this script, consider installing zip or gzip\\e[0m" && exit 77)

options=$(getopt -o hwtp:b:d:gr --long help,wal,tiled,palette:,background:,destination:,gaussian-blur:,restart -- "$@")
if [ $? != 0 ] ; then exit_abnormal; fi
eval set -- "$options"

while true; do
  case "$1" in
    -h) usage; exit 0 ;;
    --help) help; exit 0 ;;
    -w | --wal )
      if [[ "$mode" == 'palette' ]]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mCannot use wal and palette together.\\e[0m"
        exit_abnormal
      fi
      if [[ ! -d "${XDG_CACHE_HOME:-${HOME}/.cache}/wal" ]]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mWal must be run before running wal-telegram.\\e[0m"
        exit_abnormal
      fi
      mode='wal'
      shift ;;
    -t | --tiled )
      bg_mode="tiled"
      shift ;;
    -p | --palette )
      if [[ "$mode" == 'wal' ]]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mCannot use wal and palette together.\\e[0m"
        exit_abnormal
      fi
      if [[ ! -f "$2" ]]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mPalette file '$2' could not be found.\\e[0m"
        exit_abnormal
      fi
      mode='palette'
      palette_file=$2
      shift 2 ;;
    -b | --background )
      if [[ ! -f "$2" ]]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mBackground file '$2' could not be found.\\e[0m"
        exit_abnormal
      fi
      bg="$2"
      shift 2 ;;
    -d | --destination )
      if (mkdir -p "$2" 2> /dev/null); then
        dest="$2"
      else
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mCould not create '$2' verify the permissions in it's parent directory and retry.\\e[0m"
        exit_abnormal
      fi
      shift 2 ;;
    -g)
      if [ -n "$blur" ]; then 
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mDo not set -g and --gaussian-blur together.\\e[0m"
        exit_abnormal
      fi
      blur="0x16" 
      shift ;;
    --gaussian-blur )
      if [ -n "$blur" ]; then 
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mDo not set -g and --gaussian-blur together.\\e[0m"
        exit_abnormal
      fi
      if [ -z "$2" ] || [ "$(expr "$2" : '^[[:digit:]]\+x[[:digit:]]\+$')" -eq 0 ]; then
        printf '%b\n\n' "\\e[1;31m::\\e[0m \\e[1;37mBlur option not recognized, see https://legacy.imagemagick.org/Usage/blur/#blur_args for reference.\\e[0m"
        exit_abnormal
      fi
      blur="$2"
      shift 2 ;;
    -r | --restart )
      restart_on_gen=true
      shift ;;
    -- ) shift; break ;;
    * ) break ;;
  esac
done
# default values
[ -z "$mode" ] && mode='wal'
[ -z "$bg_mode" ] && bg_mode='background'
[ -z "$bg" ] && bg='wal'

# source this here in case wal is not an option
if [[ "$mode" == 'wal' ]]; then
  . "${XDG_CACHE_HOME:-${HOME}/.cache}/wal/colors.sh"
else
  . "$palette_file"
fi

if [[ "$bg_mode" == 'tiled' ]] && [[ "$bg" != 'wal' ]]; then
  printf '%b\n' "\\e[1;31m::\\e[0m \\e[1;37mBackground option while using tiled mode is useless.\\e[0m"
fi

# Prepare the conditions for the other functions.
prepare() {
  pre="/tmp/wal-telegram/$(date +%s)"
  [ -z "$dest" ] && dest="${XDG_CACHE_HOME:-${HOME}/.cache}/wal-telegram"
  mkdir -p "$pre"
  mkdir -p "$dest"
  rm -f "${dest}/${mode}.tdesktop-theme"

  if [[ "$bg" == "wal" ]]; then # if no background is specified
    if [[ "$mode" == wal ]] && [[ "$bg_mode" == "background" ]]; then
      # wal mode without tiled
      bg_path="$(<"${XDG_CACHE_HOME:-${HOME}/.cache}/wal/wal")"
      bg_ext="${bg_path##*.}"
      cp "$bg_path" "${pre}/background.${bg_ext}"
    elif [[ "$mode" == "palette" ]] && [[ "$bg_mode" == "background" ]]; then
      if [[ -f "${HOME}/.fehbg" ]]; then
        bg_path="$(tail -n1 "${HOME}/.fehbg" \
                   | sed "s/[^']*//" \
                   | awk '{print $1}' \
                   | sed "s/'//g")"
        bg_ext="${bg_path##*.}"
        if [[ -f "$bg_path" ]]; then
          cp "$bg_path" "${pre}/background.${bg_ext}"
        fi
      else # if .fehbg exists
        printf '%b\n' "\\e[1;31m::\\e[0m \\e[1;37m~/.fehbg not found, falling back to tiled background.\\e[0m"
        bg="tiled"
      fi # if .fehbg exists
    fi # elif mode == palette
  else # if bg == wal
    bg_ext="${bg##*.}"
    cp "$bg" "${pre}/background.${bg_ext}"
  fi # if bg == wal
}

# Lighten/darken by 20%, 30%, 40%, 50%, 60% some colors using only pure bash.
create_colors() {
  colors=(0 1 2 7)
  for i in "${colors[@]}"; do
    color="color${i}"
    c_rgb_12d="$(( 0x"${!color:1:2}" ))"
    c_rgb_34d="$(( 0x"${!color:3:2}" ))"
    c_rgb_56d="$(( 0x"${!color:5:2}" ))"
    c_rgb_12d_20l="$(( c_rgb_12d + "$((c_rgb_12d / 5))" ))"
    c_rgb_34d_20l="$(( c_rgb_34d + "$((c_rgb_34d / 5))" ))"
    c_rgb_56d_20l="$(( c_rgb_56d + "$((c_rgb_56d / 5))" ))"
    [[ "${c_rgb_12d_20l}" -ge 255 ]] && c_rgb_12d_20l=255
    [[ "${c_rgb_34d_20l}" -ge 255 ]] && c_rgb_34d_20l=255
    [[ "${c_rgb_56d_20l}" -ge 255 ]] && c_rgb_56d_20l=255
    printf -v c_hex_12d_20l '%x' "$c_rgb_12d_20l"
    printf -v c_hex_34d_20l '%x' "$c_rgb_34d_20l"
    printf -v c_hex_56d_20l '%x' "$c_rgb_56d_20l"
    [[ "${#c_hex_12d_20l}" -eq 1 ]] && c_hex_12d_20l="0${c_hex_12d_20l}"
    [[ "${#c_hex_34d_20l}" -eq 1 ]] && c_hex_34d_20l="0${c_hex_34d_20l}"
    [[ "${#c_hex_56d_20l}" -eq 1 ]] && c_hex_56d_20l="0${c_hex_56d_20l}"
    c_hex_20l="#${c_hex_12d_20l}${c_hex_34d_20l}${c_hex_56d_20l}"
    declare -g color"${i}"_lighter_20="$c_hex_20l"
    c_rgb_12d_30l="$(( c_rgb_12d + "$((c_rgb_12d * 3 / 10))" ))"
    c_rgb_34d_30l="$(( c_rgb_34d + "$((c_rgb_34d * 3 / 10))" ))"
    c_rgb_56d_30l="$(( c_rgb_56d + "$((c_rgb_56d * 3 / 10))" ))"
    [[ "${c_rgb_12d_30l}" -ge 255 ]] && c_rgb_12d_30l=255
    [[ "${c_rgb_34d_30l}" -ge 255 ]] && c_rgb_34d_30l=255
    [[ "${c_rgb_56d_30l}" -ge 255 ]] && c_rgb_56d_30l=255
    printf -v c_hex_12d_30l '%x' "$c_rgb_12d_30l"
    printf -v c_hex_34d_30l '%x' "$c_rgb_34d_30l"
    printf -v c_hex_56d_30l '%x' "$c_rgb_56d_30l"
    [[ "${#c_hex_12d_30l}" -eq 1 ]] && c_hex_12d_30l="0${c_hex_12d_30l}"
    [[ "${#c_hex_34d_30l}" -eq 1 ]] && c_hex_34d_30l="0${c_hex_34d_30l}"
    [[ "${#c_hex_56d_30l}" -eq 1 ]] && c_hex_56d_30l="0${c_hex_56d_30l}"
    c_hex_30l="#${c_hex_12d_30l}${c_hex_34d_30l}${c_hex_56d_30l}"
    declare -g color"${i}"_lighter_30="$c_hex_30l"
    c_rgb_12d_40l="$(( c_rgb_12d + "$((c_rgb_12d * 2 / 5))" ))"
    c_rgb_34d_40l="$(( c_rgb_34d + "$((c_rgb_34d * 2 / 5))" ))"
    c_rgb_56d_40l="$(( c_rgb_56d + "$((c_rgb_56d * 2 / 5))" ))"
    [[ "${c_rgb_12d_40l}" -ge 255 ]] && c_rgb_12d_40l=255
    [[ "${c_rgb_34d_40l}" -ge 255 ]] && c_rgb_34d_40l=255
    [[ "${c_rgb_56d_40l}" -ge 255 ]] && c_rgb_56d_40l=255
    printf -v c_hex_12d_40l '%x' "$c_rgb_12d_40l"
    printf -v c_hex_34d_40l '%x' "$c_rgb_34d_40l"
    printf -v c_hex_56d_40l '%x' "$c_rgb_56d_40l"
    [[ "${#c_hex_12d_40l}" -eq 1 ]] && c_hex_12d_40l="0${c_hex_12d_40l}"
    [[ "${#c_hex_34d_40l}" -eq 1 ]] && c_hex_34d_40l="0${c_hex_34d_40l}"
    [[ "${#c_hex_56d_40l}" -eq 1 ]] && c_hex_56d_40l="0${c_hex_56d_40l}"
    c_hex_40l="#${c_hex_12d_40l}${c_hex_34d_40l}${c_hex_56d_40l}"
    declare -g color"${i}"_lighter_40="$c_hex_40l"
    c_rgb_12d_50l="$(( c_rgb_12d + "$((c_rgb_12d / 2))" ))"
    c_rgb_34d_50l="$(( c_rgb_34d + "$((c_rgb_34d / 2))" ))"
    c_rgb_56d_50l="$(( c_rgb_56d + "$((c_rgb_56d / 2))" ))"
    [[ "${c_rgb_12d_50l}" -ge 255 ]] && c_rgb_12d_50l=255
    [[ "${c_rgb_34d_50l}" -ge 255 ]] && c_rgb_34d_50l=255
    [[ "${c_rgb_56d_50l}" -ge 255 ]] && c_rgb_56d_50l=255
    printf -v c_hex_12d_50l '%x' "$c_rgb_12d_50l"
    printf -v c_hex_34d_50l '%x' "$c_rgb_34d_50l"
    printf -v c_hex_56d_50l '%x' "$c_rgb_56d_50l"
    [[ "${#c_hex_12d_50l}" -eq 1 ]] && c_hex_12d_50l="0${c_hex_12d_50l}"
    [[ "${#c_hex_34d_50l}" -eq 1 ]] && c_hex_34d_50l="0${c_hex_34d_50l}"
    [[ "${#c_hex_56d_50l}" -eq 1 ]] && c_hex_56d_50l="0${c_hex_56d_50l}"
    c_hex_50l="#${c_hex_12d_50l}${c_hex_34d_50l}${c_hex_56d_50l}"
    declare -g color"${i}"_lighter_50="$c_hex_50l"
    c_rgb_12d_60l="$(( c_rgb_12d + "$((c_rgb_12d * 3 / 5))" ))"
    c_rgb_34d_60l="$(( c_rgb_34d + "$((c_rgb_34d * 3 / 5))" ))"
    c_rgb_56d_60l="$(( c_rgb_56d + "$((c_rgb_56d * 3 / 5))" ))"
    [[ "${c_rgb_12d_60l}" -ge 255 ]] && c_rgb_12d_60l=255
    [[ "${c_rgb_34d_60l}" -ge 255 ]] && c_rgb_34d_60l=255
    [[ "${c_rgb_56d_60l}" -ge 255 ]] && c_rgb_56d_60l=255
    printf -v c_hex_12d_60l '%x' "$c_rgb_12d_60l"
    printf -v c_hex_34d_60l '%x' "$c_rgb_34d_60l"
    printf -v c_hex_56d_60l '%x' "$c_rgb_56d_60l"
    [[ "${#c_hex_12d_60l}" -eq 1 ]] && c_hex_12d_60l="0${c_hex_12d_60l}"
    [[ "${#c_hex_34d_60l}" -eq 1 ]] && c_hex_34d_60l="0${c_hex_34d_60l}"
    [[ "${#c_hex_56d_60l}" -eq 1 ]] && c_hex_56d_60l="0${c_hex_56d_60l}"
    c_hex_60l="#${c_hex_12d_60l}${c_hex_34d_60l}${c_hex_56d_60l}"
    declare -g color"${i}"_lighter_60="$c_hex_60l"
    c_rgb_12d_20d="$(( c_rgb_12d - "$((c_rgb_12d / 5))" ))"
    c_rgb_34d_20d="$(( c_rgb_34d - "$((c_rgb_34d / 5))" ))"
    c_rgb_56d_20d="$(( c_rgb_56d - "$((c_rgb_56d / 5))" ))"
    printf -v c_hex_12d_20d '%x' "$c_rgb_12d_20d"
    printf -v c_hex_34d_20d '%x' "$c_rgb_34d_20d"
    printf -v c_hex_56d_20d '%x' "$c_rgb_56d_20d"
    [[ "${#c_hex_12d_20d}" -eq 1 ]] && c_hex_12d_20d="0${c_hex_12d_20d}"
    [[ "${#c_hex_34d_20d}" -eq 1 ]] && c_hex_34d_20d="0${c_hex_34d_20d}"
    [[ "${#c_hex_56d_20d}" -eq 1 ]] && c_hex_56d_20d="0${c_hex_56d_20d}"
    c_hex_20d="#${c_hex_12d_20d}${c_hex_34d_20d}${c_hex_56d_20d}"
    declare -g color"${i}"_darker_20="$c_hex_20d"
    c_rgb_12d_30d="$(( c_rgb_12d - "$((c_rgb_12d * 3 / 10))" ))"
    c_rgb_34d_30d="$(( c_rgb_34d - "$((c_rgb_34d * 3 / 10))" ))"
    c_rgb_56d_30d="$(( c_rgb_56d - "$((c_rgb_56d * 3 / 10))" ))"
    printf -v c_hex_12d_30d '%x' "$c_rgb_12d_30d"
    printf -v c_hex_34d_30d '%x' "$c_rgb_34d_30d"
    printf -v c_hex_56d_30d '%x' "$c_rgb_56d_30d"
    [[ "${#c_hex_12d_30d}" -eq 1 ]] && c_hex_12d_30d="0${c_hex_12d_30d}"
    [[ "${#c_hex_34d_30d}" -eq 1 ]] && c_hex_34d_30d="0${c_hex_34d_30d}"
    [[ "${#c_hex_56d_30d}" -eq 1 ]] && c_hex_56d_30d="0${c_hex_56d_30d}"
    c_hex_30d="#${c_hex_12d_30d}${c_hex_34d_30d}${c_hex_56d_30d}"
    declare -g color"${i}"_darker_30="$c_hex_30d"
    c_rgb_12d_40d="$(( c_rgb_12d - "$((c_rgb_12d * 2 / 5))" ))"
    c_rgb_34d_40d="$(( c_rgb_34d - "$((c_rgb_34d * 2 / 5))" ))"
    c_rgb_56d_40d="$(( c_rgb_56d - "$((c_rgb_56d * 2 / 5))" ))"
    printf -v c_hex_12d_40d '%x' "$c_rgb_12d_40d"
    printf -v c_hex_34d_40d '%x' "$c_rgb_34d_40d"
    printf -v c_hex_56d_40d '%x' "$c_rgb_56d_40d"
    [[ "${#c_hex_12d_40d}" -eq 1 ]] && c_hex_12d_40d="0${c_hex_12d_40d}"
    [[ "${#c_hex_34d_40d}" -eq 1 ]] && c_hex_34d_40d="0${c_hex_34d_40d}"
    [[ "${#c_hex_56d_40d}" -eq 1 ]] && c_hex_56d_40d="0${c_hex_56d_40d}"
    c_hex_40d="#${c_hex_12d_40d}${c_hex_34d_40d}${c_hex_56d_40d}"
    declare -g color"${i}"_darker_40="$c_hex_40d"
    c_rgb_12d_50d="$(( c_rgb_12d - "$((c_rgb_12d / 2))" ))"
    c_rgb_34d_50d="$(( c_rgb_34d - "$((c_rgb_34d / 2))" ))"
    c_rgb_56d_50d="$(( c_rgb_56d - "$((c_rgb_56d / 2))" ))"
    printf -v c_hex_12d_50d '%x' "$c_rgb_12d_50d"
    printf -v c_hex_34d_50d '%x' "$c_rgb_34d_50d"
    printf -v c_hex_56d_50d '%x' "$c_rgb_56d_50d"
    [[ "${#c_hex_12d_50d}" -eq 1 ]] && c_hex_12d_50d="0${c_hex_12d_50d}"
    [[ "${#c_hex_34d_50d}" -eq 1 ]] && c_hex_34d_50d="0${c_hex_34d_50d}"
    [[ "${#c_hex_56d_50d}" -eq 1 ]] && c_hex_56d_50d="0${c_hex_56d_50d}"
    c_hex_50d="#${c_hex_12d_50d}${c_hex_34d_50d}${c_hex_56d_50d}"
    declare -g color"${i}"_darker_50="$c_hex_50d"
    c_rgb_12d_60d="$(( c_rgb_12d - "$((c_rgb_12d * 3 / 5))" ))"
    c_rgb_34d_60d="$(( c_rgb_34d - "$((c_rgb_34d * 3 / 5))" ))"
    c_rgb_56d_60d="$(( c_rgb_56d - "$((c_rgb_56d * 3 / 5))" ))"
    printf -v c_hex_12d_60d '%x' "$c_rgb_12d_60d"
    printf -v c_hex_34d_60d '%x' "$c_rgb_34d_60d"
    printf -v c_hex_56d_60d '%x' "$c_rgb_56d_60d"
    [[ "${#c_hex_12d_60d}" -eq 1 ]] && c_hex_12d_60d="0${c_hex_12d_60d}"
    [[ "${#c_hex_34d_60d}" -eq 1 ]] && c_hex_34d_60d="0${c_hex_34d_60d}"
    [[ "${#c_hex_56d_60d}" -eq 1 ]] && c_hex_56d_60d="0${c_hex_56d_60d}"
    c_hex_60d="#${c_hex_12d_60d}${c_hex_34d_60d}${c_hex_56d_60d}"
    declare -g color"${i}"_darker_60="$c_hex_60d"
  done
}

# Create colors.tdesktop-palette using the colors generated by create_colors()
# and the colors.wt-constants file.
create_palette() {
  cat <<EOF > "${pre}/colors.tdesktop-theme"
// Colors imported by wal-telegram.
color0: $color0;
color1: $color1;
color2: $color2;
color3: $color3;
color4: $color4;
color5: $color5;
color6: $color6;
color7: $color7;
color8: $color8;

// Lighter and darker variants of the colors.
colorLighter0_20: $color0_lighter_20;
colorLighter0_30: $color0_lighter_30;
colorLighter0_40: $color0_lighter_40;
colorLighter0_50: $color0_lighter_50;
colorLighter0_60: $color0_lighter_60;
colorDarker0_20: $color0_darker_20;
colorDarker0_30: $color0_darker_30;
colorDarker0_40: $color0_darker_40;
colorDarker0_50: $color0_darker_50;
colorDarker0_60: $color0_darker_60;
colorLighter1_20: $color1_lighter_20;
colorLighter1_30: $color1_lighter_30;
colorLighter1_40: $color1_lighter_40;
colorLighter1_50: $color1_lighter_50;
colorLighter1_60: $color1_lighter_60;
colorDarker1_20: $color1_darker_20;
colorDarker1_30: $color1_darker_30;
colorDarker1_40: $color1_darker_40;
colorDarker1_50: $color1_darker_50;
colorDarker1_60: $color1_darker_60;
colorLighter2_20: $color2_lighter_20;
colorLighter2_30: $color2_lighter_30;
colorLighter2_40: $color2_lighter_40;
colorLighter2_50: $color2_lighter_50;
colorLighter2_60: $color2_lighter_60;
colorDarker2_20: $color2_darker_20;
colorDarker2_30: $color2_darker_30;
colorDarker2_40: $color2_darker_40;
colorDarker2_50: $color2_darker_50;
colorDarker2_60: $color2_darker_60;
colorLighter7_20: $color7_lighter_20;
colorLighter7_30: $color7_lighter_30;
colorLighter7_40: $color7_lighter_40;
colorLighter7_50: $color7_lighter_50;
colorLighter7_60: $color7_lighter_60;
colorDarker7_20: $color7_darker_20;
colorDarker7_30: $color7_darker_30;
colorDarker7_40: $color7_darker_40;
colorDarker7_50: $color7_darker_50;
colorDarker7_60: $color7_darker_60;

// Alpha colors.
colorAlpha0_18: ${color0}18;
colorAlpha0_3c: ${color0}3c;
colorAlpha0_03: ${color0}03;
colorAlpha0_7f: ${color0}7f;
colorAlpha0_b0: ${color0}b0;
colorAlpha0_cc: ${color0}cc;
colorAlpha0_00: ${color0}00;
colorAlpha0_54: ${color0}54;
colorAlpha0_56: ${color0}56;
colorAlpha0_74: ${color0}74;
colorAlpha0_40: ${color0}40;
colorAlpha0_4c: ${color0}4c;
colorAlpha0_b2: ${color0}b2;
colorAlpha0_f2: ${color0}f2;
colorAlpha0_66: ${color0}66;
colorAlpha1_10: ${color1}10;
colorAlpha1_33: ${color1}33;
colorAlpha2_c8: ${color2}c8;
colorAlpha2_4c: ${color2}4c;
colorAlpha2_7f: ${color2}7f;
colorAlpha2_00: ${color2}00;
colorAlpha2_87: ${color2}87;
colorAlpha3_64: ${color3}64;
colorAlpha7_53: ${color7}53;
colorAlpha7_7a: ${color7}7a;
colorAlpha7_1a: ${color7}1a;
colorAlpha7_2c: ${color7}2c;
colorAlpha7_7f: ${color7}7f;
colorAlpha7_bc: ${color7}bc;
colorAlpha7_4c: ${color7}4c;
colorAlpha7_6b: ${color7}6b;
colorAlpha7_14: ${color7}14;
EOF
  const="$(<"$script_dir/colors.wt-constants")"
  printf '%s' "$const" >> "${pre}/colors.tdesktop-theme"
  cd "${pre}" || exit 1;
  if [[ -z $bg_ext ]]; then bg_ext="png"; fi
  if [[ -n $blur ]]; then blur="-blur $blur"; fi
  if [[ "$bg_mode" = "tiled" ]]; then convert -size 256x256 "xc:$color0" tiled.png;
  elif [[ "$bg_mode" = "background" ]]; then
    size=$(magick identify -format "%w" ${bg_mode}.${bg_ext})
    # shellcheck disable=SC2086
    convert ${bg_mode}.${bg_ext} $blur -resize $(( size > 1920 ? size : 1920 )) ${bg_mode}.png
  fi
  zip -q ${mode}.tdesktop-theme colors.tdesktop-theme ${bg_mode}.png
  cp ${mode}.tdesktop-theme "$dest"
  [ -n "$restart_on_gen" ] && pkill -f telegram-desktop && telegram-desktop & 
}

main() {
  prepare && create_colors && create_palette && printf '%b\n' "\\e[1;31m::\\e[0m \\e[1;37mPalette generated succesfully.\\e[0m"
}

main