#!/bin/sh
test -n "$5" || { echo "usage: ./mastodon-post.sh <text> <title> <link> <handle> </abs/path/to/out.glb>"; exit 0; } 

out="$5"
tmpdir=/tmp/.mastodon-post
mydir="$(dirname $(readlink -f $0))"
cd $mydir

# create tmp workspace
test -d $tmpdir && rm -rf $tmpdir
mkdir $tmpdir
cp * $tmpdir/.
rm $tmpdir/mastodon-post.png # IMPORTANT: prevent newer/older imagemagick -clobber (non)existence

set -x
magick $tmpdir/mastodon-post-bg.png \
  \( -size 580x -background none -pointsize 32 -interline-spacing 10 -fill \#FFF -font Montserrat-SemiBold.ttf "caption:$1" \) \
  -gravity center -composite \
  -pointsize 20 \
  -fill \#FFFFFF -gravity NorthWest -annotate +152+130 "$4" \
  -fill \#9c9cc9 -gravity NorthWest -annotate +152+160 "$2" \
  -fill \#9c9cc9 -gravity NorthWest -annotate +52+460 "$3" \
  -define png:compression-level=9 \
  -define png:compression-filter=5 \
  -define png:compression-strategy=1 \
  $tmpdir/mastodon-post.png

cd $tmpdir
assimp export mastodon-post.gltf $out --embed-textures