# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/run" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "bfl/flux-2/max",
  "prompt": "A lavish, baroque-style image of a powerful sorceress in her arcane study. She is dressed in robes of deep emerald velvet embroidered with gold thread and shimmering beetle wings, holding a staff topped with a glowing, swirling galaxy trapped in a crystal orb.She stands before a massive oak desk covered in open grimoires with illuminated pages showing alchemical diagrams, bubbling potions in glass alembics, and a sleeping pseudodragon curled around a stack of scrolls. The room is filled with curiosities: shelves of leather-bound books, celestial globes, and dried magical herbs hanging from the ceiling. The lighting is chiaroscuro, from a large fireplace with green flames and a magical candelabra floating in mid-air. The brushwork is visible and textured, with rich, deep colors. The style is reminiscent of Rembrandt meets classic fantasy art. The words 'Flux 2 Max is available on fal' are written in elegant cursive font on the top of the image.",
  "aspect_ratio": "16:9",
  "output_format": "jpeg"
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
  status=$(printf '%s' "$result" | jq -r .status)
  case "$status" in completed|failed|timeout) break ;; esac
  sleep 2
  result=$(curl --fail-with-body --silent \
    -H "Authorization: Bearer $SANDBASE_API_KEY" \
    "https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"