fullstack/fullstack-gatsby-theme-bch-wallet
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This commit is contained in:
Chris Troutner
2020-12-17 12:19:17 -08:00
parent d5245a6c7a
commit a3146f0a48
3 changed files with 76 additions and 0 deletions
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src/components/footer/index.js
+7
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@@ -8,6 +8,9 @@ import { getWalletInfo } from '../localWallet'
// Get the IPFS hash from the BCH Blockchain.
import MemoGet from 'memo-get-gatsby'
// Get the IPFS hash from the BCH Blockchain.
import Memo from '../../services/memo-hash'
let _this
class Footer extends React.Component {
@@ -19,6 +22,10 @@ class Footer extends React.Component {
ipfsHash: 'No Result',
ipfsHashLink: ''
}
this.memoAddr = 'bitcoincash:qr7u857krgsvq0dwe8rzlt5rcx35r6hnmu6glavtx0'
this.memo = new Memo({ bchAddr: this.memoAddr })
// memo-get-gatsby Instance
this.memoGet = _this.instantiateMemoLib()
}
src/html.js
+3
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@@ -41,6 +41,9 @@ export default function HTML (props) {
{/* minimal-slp-wallet */}
<script src='https://unpkg.com/minimal-slp-wallet' />
{/* bch-message-lib */}
<script src='https://unpkg.com/bch-message-lib' />
{props.headComponents}
</head>
<body {...props.bodyAttributes}>
src/services/memo-hash.js
+66
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@@ -0,0 +1,66 @@
/*
This service file contains functions for retrieving an IPFS hash from the
BCH blockchain, in a fasion similar to PS001:
https://github.com/Permissionless-Software-Foundation/specifications/blob/master/ps001-media-sharing.md
*/
// These libraries are retrieved in /src/html.js
// minimal-slp-wallet-web
const BchWallet = typeof window !== 'undefined' ? window.SlpWallet : null
// bch-message-lib
// const BchMessage = typeof window !== 'undefined' ? window.BchMessage : null
class Memo {
constructor (config) {
// Throw an error if this class is instantiated without passing a BCH address.
if (!config || !config.bchAddr) {
throw new Error('Must pass a BCH address to Memo constructor.')
} else this.bchAddr = config.bchAddr
if (BchWallet) {
// Note: Uncommenting the line below will throw an error. I think it's
// a collision in the name space?
// this.wallet = new BchWallet()
// this.bchjs = this.wallet.bchjs
} else {
console.error('Could not access minimal-slp-wallet library.')
}
// if (BchMessage) {
// this.bchMessage = new BchMessage({ bchjs: this.bchjs })
// } else {
// console.error('Could not access bch-message-lib library.')
// }
}
// Walk the transactions associated with an address until a proper IPFS hash is
// found. If one is not found, will return false.
async findHash () {
try {
console.log(`finding latest IPFS hash for address: ${this.bchAddr}...`)
const txs = await this.bchMessage.memo.memoRead(
this.bchAddr,
'IPFS UPDATE'
)
// console.log(`txs: ${JSON.stringify(txs, null, 2)}`)
// If the array is empty, then return false.
if (txs.length === 0) return false
const hash = txs[0].subject
console.log(`...found this IPFS hash: ${hash}`)
// The transactions should automatically be sorted by the bchMessage
// library. So Just return the subject.
return hash
} catch (err) {
console.warn('Could not find IPFS hash in transaction history.')
return false
}
}
}
export default Memo