#!/usr/bin/env bash

# docker-finance | modern accounting for the power-user
#
# Copyright (C) 2025 Aaron Fiore (Founder, Evergreen Crypto LLC)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.

make_gif_examples()
{
  local -r _path="$(dirname "$(realpath -s $0)")/../assets/examples"
  if [ ! -d "${_path}"/png ]; then
    echo "FATAL: example path not found" >&2
    return 1
  fi

  hash gawk || return $?
  hash magick || return $?

  ls "${_path}"/png \
    | gawk '{print $(NF-1)}' FS='_' \
    | sort -u \
    | while read _file; do
      magick "${_path}"/png/*"${_file}"* \
        -gravity center \
        -crop 2:1 \
        +repage \
        -resize 400x400 \
        -set delay $((RANDOM % (350 - 250 + 1) + 250)) \
        "${_path}"/gif/"${_file}".gif
    done
}

make_gif_examples