Wan 3.0 Reference-to-Video API

set -euo pipefail
: "${VIDGO_API_KEY:?Set VIDGO_API_KEY in your environment}"

REQUEST_BODY=$(cat <<'JSON'
{
  "model": "alibaba/wan-3.0/reference-to-video",
  "input": {
    "prompt": "Use Reference Image 1 only for the proud pigeon with the aviator scarf. Use Reference Image 2 only for the oversized croissant. Use Reference Image 3 only for the subway grab handle. In one continuous five-second shot, the Image 1 pigeon holds the Image 2 croissant in its beak and stands on the Image 3 subway handle, swaying with the train. Camera: waist-height handheld sway matching the subway motion. No cuts. Synchronized audio: subway rumble, a proud coo, a faint pastry flake crunch. No readable text, letters, numbers, captions, labels, logos, brands, watermarks, advertisements, posters, UI screens, or product packaging.",
    "duration": 5,
    "resolution": "720p",
    "aspect_ratio": "adaptive",
    "audio": true,
    "enable_safety_checker": true,
    "reference_image_urls": [
      "https://cdn.vidgo.ai/apis/models/alibaba/wan-3.0/reference-to-video/v1/01/input-01.jpg",
      "https://cdn.vidgo.ai/apis/models/alibaba/wan-3.0/reference-to-video/v1/01/input-02.jpg",
      "https://cdn.vidgo.ai/apis/models/alibaba/wan-3.0/reference-to-video/v1/01/input-03.jpg"
    ]
  }
}
JSON
)

SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  --request POST \
  --url "https://api.vidgo.ai/api/generate/submit" \
  --header "Authorization: Bearer $VIDGO_API_KEY" \
  --header "Content-Type: application/json" \
  --data "$REQUEST_BODY")

TASK_ID=$(printf '%s' "$SUBMIT_RESPONSE" | jq -r '.data.task_id // .task_id // empty')
BUSINESS_CODE=$(printf '%s' "$SUBMIT_RESPONSE" | jq -r '.code // empty')
if [ "$BUSINESS_CODE" != "0" ] && [ "$BUSINESS_CODE" != "200" ]; then
  printf 'Submit failed:
%s
' "$SUBMIT_RESPONSE" >&2
  exit 1
fi
if [ -z "$TASK_ID" ]; then
  printf 'Submit response did not include task_id:
%s
' "$SUBMIT_RESPONSE" >&2
  exit 1
fi

START_TIME=$(date +%s)
POLL_DELAY=2
while true; do
  if [ $(( $(date +%s) - START_TIME )) -ge 600 ]; then
    printf 'Timed out after 600 seconds
' >&2
    exit 1
  fi
  STATUS_RESPONSE=$(curl --silent --show-error --fail-with-body \
    --url "https://api.vidgo.ai/api/generate/status/$TASK_ID" \
    --header "Authorization: Bearer $VIDGO_API_KEY")
  STATUS=$(printf '%s' "$STATUS_RESPONSE" | jq -r '.data.status // .status // empty')
  BUSINESS_CODE=$(printf '%s' "$STATUS_RESPONSE" | jq -r '.code // empty')
  if [ "$BUSINESS_CODE" != "0" ] && [ "$BUSINESS_CODE" != "200" ]; then
    printf 'Status request failed:
%s
' "$STATUS_RESPONSE" >&2
    exit 1
  fi

  case "$STATUS" in
    finished)
      printf '%s' "$STATUS_RESPONSE" | jq -r '(.data.files // .files // [])[]?.file_url'
      break
      ;;
    failed)
      printf '%s' "$STATUS_RESPONSE" | jq -r '.data.error_message // .error_message // "Generation failed"' >&2
      exit 1
      ;;
    not_started|running)
      sleep "$POLL_DELAY"
      if [ "$POLL_DELAY" -lt 10 ]; then POLL_DELAY=$((POLL_DELAY + 1)); fi
      ;;
    *)
      printf 'Unexpected task status: %s
' "$STATUS" >&2
      exit 1
      ;;
  esac
done