"""mint_nft — Mintra Polygon NFT minting.
Mints an artwork as an NFT on Polygon with on-chain provenance link.
"""
import base64
import httpx
import structlog
from ..mcp_server.config import config
logger = structlog.get_logger()
def mint_nft(
image_b64: str,
metadata: dict,
collection: str | None = None,
) -> dict:
"""Mint an NFT on Polygon.
Args:
image_b64: Base64-encoded image (PNG or JPEG).
metadata: Golden Codex metadata for on-chain storage.
collection: Optional collection name/ID.
Returns:
dict with token_id, contract_address, tx_hash, explorer_url.
"""
logger.info("mint_nft", collection=collection)
response = httpx.post(
f"{config.mintra_url}/mint",
json={
"image": image_b64,
"metadata": metadata,
"collection": collection,
},
timeout=120.0,
)
response.raise_for_status()
data = response.json()
return {
"token_id": data.get("token_id"),
"contract_address": data.get("contract_address"),
"tx_hash": data.get("tx_hash"),
"chain": "polygon",
"explorer_url": f"https://polygonscan.com/tx/{data.get('tx_hash')}",
}
