ElevenLabs Music Text to Audio API

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

REQUEST_BODY=$(cat <<'JSON'
{
  "model": "elevenlabs/music",
  "input": {
    "composition_plan": {
      "positive_global_styles": [
        "indie folk with subtle organic electronica",
        "96 BPM, 4/4",
        "warm clear female lead vocal",
        "acoustic guitar, rounded bass, delicate electronic percussion",
        "hopeful intimate song about planting a rooftop garden",
        "clean spacious studio mix, clear Mandarin and English diction"
      ],
      "negative_global_styles": [
        "harsh distortion",
        "crowded arrangement",
        "spoken narration",
        "abrupt cut off"
      ],
      "sections": [
        {
          "section_name": "Acoustic introduction",
          "duration": 8,
          "positive_local_styles": [
            "instrumental only",
            "fingerpicked acoustic guitar introduces a memorable gentle motif",
            "soft airy pad, no drums"
          ],
          "negative_local_styles": [],
          "lines": []
        },
        {
          "section_name": "Mandarin verse",
          "duration": 16,
          "positive_local_styles": [
            "sing the supplied Mandarin lyrics clearly",
            "intimate gentle lead vocal",
            "fingerpicked guitar and soft bass, restrained percussion"
          ],
          "negative_local_styles": [],
          "lines": [
            "把春天种在屋顶上",
            "等风翻过旧砖墙"
          ]
        },
        {
          "section_name": "English chorus",
          "duration": 16,
          "positive_local_styles": [
            "sing the supplied English lyrics clearly",
            "open uplifting melody",
            "full warm drums and bass enter",
            "layered backing vocal harmonies, retain the acoustic motif"
          ],
          "negative_local_styles": [],
          "lines": [
            "Little seeds above the street",
            "Find the sunlight, find the beat"
          ]
        },
        {
          "section_name": "Instrumental resolution",
          "duration": 8,
          "positive_local_styles": [
            "instrumental only, no vocals",
            "return to fingerpicked guitar motif",
            "drums fall away, warm sustained final chord with natural decay"
          ],
          "negative_local_styles": [],
          "lines": []
        }
      ]
    },
    "respect_sections_durations": true,
    "output_format": "mp3_44100_128"
  }
}
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