# 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 $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "bytedance/seedream/5.0/flash/edit",
  "images": [
    "https://p9-arcosite.byteimg.com/tos-cn-i-goo7wpa0wc/77024d8e03f24862b066bfc385301120~tplv-goo7wpa0wc-image.image",
    "https://p9-arcosite.byteimg.com/tos-cn-i-goo7wpa0wc/2cbc5cf5a68d44899fc52f177fb9cf51~tplv-goo7wpa0wc-image.image"
  ],
  "prompt": "Generate 3 images of a girl and a cow plushie happily riding a roller coaster in an amusement park, depicting morning, noon, and night.",
  "output_format": "png"
}
SANDBASE_JSON
)
run_id=$(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"