craft-nft

A standalone NFT implementation for real-world arts and crafts assets
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common.js (2250B)

      1 // This file contains browser interface code that is not explicitly linked to a specific implementation.
      2 
      3 
      4 /**
      5  * The session object keeps the current known state of backends and settings during user interface execution.
      6  *
      7  * These are the only global properties.
      8  */
      9 var session = {
     10 	account: undefined,
     11 	contractAddress: undefined,
     12 	contract: undefined,
     13 	name: undefined,
     14 	symbol: undefined,
     15 	//declarationHash: undefined,
     16 	contentGatewayUrl: undefined,
     17 	contentGateway: undefined,
     18 	supply: 0,
     19 };
     20 
     21 
     22 /**
     23  * Entry point.
     24  *
     25  * Passes UI entry point function to be executed after successful initialization.
     26  */
     27 window.addEventListener('load', async () => {
     28 	const provider = window.craftnft.loadProvider();
     29 	const conn = window.craftnft.loadConn(provider);
     30 
     31 	provider.on('accountsChanged', function(e) {
     32 		console.debug('accountschanged', e);
     33 	});
     34 
     35 
     36 	let config = undefined;
     37 	let rs = await fetch('settings.json');
     38 	if (rs.ok) {
     39 		config = await rs.json();
     40 	}
     41 
     42 	let abi = undefined;
     43 	let bin = undefined;
     44 	rs = await fetch('contract/CraftNFT.json');
     45 	if (rs.ok) {
     46 		abi = await rs.json();
     47 	}
     48 	rs = await fetch('contract/CraftNFT.bin');
     49 	if (rs.ok) {
     50 		bin = await rs.text();
     51 	}
     52 	config.abi = abi
     53 	config.bin = bin
     54 
     55 	// This is handler code for the Allocate event
     56 	// Unfortunately, at least with openethereum 3.3.3, it does not post the log object, but the block header instead.
     57 	let ev = conn.eth.subscribe('logs', {
     58 		address: config.contract,
     59 		topics: ['0xb85ba54b9f6f8241b7e1499e3cfc186ac0b1c8b7100f599bf6ca6844f896c342'], 
     60 	}, (e, r) => {
     61 		console.debug('results of subscribe', e, r);
     62 	});
     63 
     64 	provider.on('message', (m) => {
     65 		console.debug('metamask log message for Allocate', m);
     66 	});
     67 
     68 
     69 	// run() is defined in the implementation file.
     70 	window.craftnft.startSession(conn, config, session, run);
     71 });
     72 
     73 
     74 /**
     75  * Emitted when the user requests a token allocation with the UI.
     76  */
     77 window.addEventListener('tokenRequest', (e) => {
     78 	window.craftnft.allocateToken(session, e.detail.digest, e.detail.tokenData.amount);
     79 });
     80 
     81 
     82 /**
     83  * Emitted when the user requests a token minting with the UI.
     84  */
     85 window.addEventListener('tokenMint', (e) => {
     86 	window.craftnft.mintToken(session, e.detail.digest, e.detail.batch, e.detail.recipient, e.detail.index);
     87 });