const nft = props.nft ?? { contractId: props.contractId, tokenId: props.tokenId, }; const contractId = nft.contractId; const tokenId = nft.tokenId; const className = props.className ?? "img-fluid"; const style = props.style; const alt = props.alt; const thumbnail = props.thumbnail; const fallbackUrl = props.fallbackUrl; const loadingUrl = props.loadingUrl ?? "https://ipfs.near.social/ipfs/bafkreidoxgv2w7kmzurdnmflegkthgzaclgwpiccgztpkfdkfzb4265zuu"; State.init({ contractId, tokenId, imageUrl: null, }); if (contractId !== state.contractId || tokenId !== tokenId) { State.update({ contractId, tokenId, imageUrl: null, }); } const nftMetadata = Near.view(contractId, "nft_metadata"); const nftToken = Near.view(contractId, "nft_token", { token_id: tokenId, }); let imageUrl = null; if (nftMetadata && nftToken) { let tokenMetadata = nftToken.metadata; let tokenMedia = tokenMetadata.media || ""; imageUrl = tokenMedia.startsWith("https://") || tokenMedia.startsWith("http://") || tokenMedia.startsWith("data:image") ? tokenMedia : nftMetadata.base_uri ? `${nftMetadata.base_uri}/${tokenMedia}` : tokenMedia.startsWith("Qm") || tokenMedia.startsWith("ba") ? `https://ipfs.near.social/ipfs/${tokenMedia}` : tokenMedia; if ( !tokenMedia && tokenMetadata.reference && nftMetadata.base_uri === "https://arweave.net" ) { const res = fetch(`${nftMetadata.base_uri}/${tokenMetadata.reference}`); imageUrl = res.body.media; } if (!imageUrl) { imageUrl = false; } } const rex = /^(?:https?:\/\/[^\/]+\/ipfs\/)?(Qm[1-9A-HJ-NP-Za-km-z]{44,}|b[A-Za-z2-7]{58,}|B[A-Z2-7]{58,}|z[1-9A-HJ-NP-Za-km-z]{48,}|F[0-9A-F]{50,})(\/.*)?$/g; rex.lastIndex = 0; const replaceIpfs = (imageUrl) => { if (state.oldUrl !== imageUrl && imageUrl) { const match = rex.exec(imageUrl); if (match) { const newImageUrl = `https://ipfs.near.social/ipfs/${match[1]}${ match[2] || "" }`; if (newImageUrl !== imageUrl) { State.update({ oldUrl: imageUrl, imageUrl: newImageUrl, }); return; } } } if (state.imageUrl !== false) { State.update({ imageUrl: false, }); } }; const thumb = (imageUrl) => thumbnail ? `https://i.near.social/${thumbnail}/${imageUrl}` : imageUrl; const img = state.imageUrl !== null ? state.imageUrl : imageUrl; const src = img !== false ? img : fallbackUrl; return ( <img className={className} style={style} src={src !== null ? thumb(src) : loadingUrl} alt={alt} onError={() => replaceIpfs(img)} /> );