#!/usr/bin/env sh
set -ex

help_text() {
  printf "
-t path to pango formated text file
   how to format: https://usage.imagemagick.org/text/#pango
   as an environment variable IMAGE_TEXT not with path but the text itself
   if -t is set the environment variable will be ignored

-p is a path to write the jpg to
   as an environment variable PICTURE_PATH
   if -p is set the environment variable will be ignored
  "
  exit 1
}

export LC_ALL='C.UTF8'
export SCRIPT_DIR="$(cd -P -- "$(dirname -- "$(command -v -- "$0")")" && pwd -P)"

P_PATH="$SCRIPT_DIR/label.jpg"
I_TEXT="$(cat "$SCRIPT_DIR"/text.pango 2>/dev/null || echo 'example text')"

P_PATH="${PICTURE_PATH:-$P_PATH}"
I_TEXT="${IMAGE_TEXT:-$I_TEXT}"

while getopts "p:t:" opt
do
   case "$opt" in
       p) P_PATH="$OPTARG";;
       t) I_TEXT=$(cat "$OPTARG");;
       *) help_text
   esac
done

magick \
  -background '#FFFFFF' \
  -fill '#000000' \
  -font 'FiraCode Nerd Font' \
  -pointsize 72 pango:"$I_TEXT" \
  "$P_PATH"