466 lines
17 KiB
JavaScript
466 lines
17 KiB
JavaScript
import ethers from 'ethers';
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import Kredits from 'kredits-contracts';
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import Service from '@ember/service';
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import EmberObject from '@ember/object';
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import { computed } from '@ember/object';
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import { alias, notEmpty } from '@ember/object/computed';
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import { isEmpty, isPresent } from '@ember/utils';
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import { inject as service } from '@ember/service';
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import { task } from 'ember-concurrency';
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import groupBy from 'kredits-web/utils/group-by';
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import processContributorData from 'kredits-web/utils/process-contributor-data';
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import processContributionData from 'kredits-web/utils/process-contribution-data';
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import formatKredits from 'kredits-web/utils/format-kredits';
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import config from 'kredits-web/config/environment';
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import Contributor from 'kredits-web/models/contributor'
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import Contribution from 'kredits-web/models/contribution'
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export default Service.extend({
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browserCache: service(),
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currentBlock: null,
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currentUserAccounts: null, // default to not having an account. this is the wen web3 is loaded.
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currentUser: null,
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contributors: null,
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contributions: null,
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githubAccessToken: null,
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currentUserIsContributor: notEmpty('currentUser'),
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currentUserIsCore: alias('currentUser.isCore'),
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hasAccounts: notEmpty('currentUserAccounts'),
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// When data was loaded from cache, we need to fetch updates from the network
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contributorsNeedSync: false,
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contributionsNeedSync: false,
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contributionsUnconfirmed: computed('contributions.[]', 'currentBlock', function() {
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return this.contributions.filter(contribution => {
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return contribution.confirmedAt > this.currentBlock;
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});
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}),
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contributionsConfirmed: computed('contributions.[]', 'currentBlock', function() {
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return this.contributions
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.filterBy('vetoed', false)
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.filter(contribution => {
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return contribution.confirmedAt <= this.currentBlock;
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});
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}),
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kreditsByContributor: computed('contributionsUnconfirmed.@each.vetoed', 'contributors.[]', function() {
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const contributionsUnconfirmed = this.contributionsUnconfirmed.filterBy('vetoed', false);
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const contributionsGrouped = groupBy(contributionsUnconfirmed, 'contributorId');
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const contributorsWithUnconfirmed = contributionsGrouped.map(c => c.value.toString());
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const contributorsWithOnlyConfirmed = this.contributors.reject(c => contributorsWithUnconfirmed.includes(c.id))
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const kreditsByContributor = contributionsGrouped.map(c => {
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const amountUnconfirmed = c.items.mapBy('amount').reduce((a, b) => a + b);
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const contributor = this.contributors.findBy('id', c.value.toString());
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return EmberObject.create({
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contributor: contributor,
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amountUnconfirmed: amountUnconfirmed,
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amountConfirmed: contributor.totalKreditsEarned,
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amountTotal: contributor.totalKreditsEarned + amountUnconfirmed
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})
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});
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contributorsWithOnlyConfirmed.forEach(c => {
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kreditsByContributor.push(EmberObject.create({
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contributor: c,
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amountUnconfirmed: 0,
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amountConfirmed: c.totalKreditsEarned,
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amountTotal: c.totalKreditsEarned
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}));
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})
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return kreditsByContributor;
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}),
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init () {
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this._super(...arguments);
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this.set('contributors', []);
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this.set('contributions', []);
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},
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// This is called in the application route's beforeModel(). So it is
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// initialized before everything else, and we can rely on the ethProvider and
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// the potential currentUserAccounts to be available
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getEthProvider () {
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let ethProvider;
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return new Promise(async (resolve) => {
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function instantiateWithoutAccount () {
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console.debug('[kredits] Creating new instance from npm module class');
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console.debug(`[kredits] providerURL: ${config.web3ProviderUrl}`);
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ethProvider = new ethers.providers.JsonRpcProvider(config.web3ProviderUrl);
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resolve({
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ethProvider: ethProvider,
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ethSigner: null
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});
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}
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async function instantiateWithAccount (web3Provider, context) {
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console.debug('[kredits] Using user-provided instance, e.g. from Mist browser or Metamask');
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ethProvider = new ethers.providers.Web3Provider(web3Provider);
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const network = await ethProvider.getNetwork();
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if (isPresent(config.web3RequiredNetwork) &&
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network.name !== config.web3RequiredNetwork) {
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window.alert(`Please switch your Ethereum wallet to the "${config.web3RequiredNetwork}" network before connecting your account.`);
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return instantiateWithoutAccount();
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}
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ethProvider.listAccounts().then(accounts => {
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context.set('currentUserAccounts', accounts);
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const ethSigner = accounts.length === 0 ? null : ethProvider.getSigner();
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resolve({
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ethProvider,
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ethSigner
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});
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});
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}
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if (window.ethereum) {
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if (window.ethereum.isConnected()) {
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instantiateWithAccount(window.ethereum, this);
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} else {
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instantiateWithoutAccount();
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}
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}
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// Legacy dapp browsers...
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else if (window.web3) {
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instantiateWithAccount(window.web3.currentProvider, this);
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}
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// Non-dapp browsers...
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else {
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instantiateWithoutAccount();
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}
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});
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},
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setup () {
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return this.getEthProvider().then((providerAndSigner) => {
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let kredits = new Kredits(providerAndSigner.ethProvider, providerAndSigner.ethSigner, {
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addresses: { Kernel: config.kreditsKernelAddress },
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apm: config.kreditsApmDomain,
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ipfsConfig: config.ipfs
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});
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return kredits
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.init()
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.then(async (kredits) => {
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this.set('kredits', kredits);
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this.set('currentBlock', await kredits.provider.getBlockNumber());
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if (this.currentUserAccounts && this.currentUserAccounts.length > 0) {
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this.getCurrentUser.then((contributorData) => {
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this.set('currentUser', contributorData);
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});
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}
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return kredits;
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});
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});
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},
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totalSupply: computed(function() {
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return this.kredits.Token.functions.totalSupply().then(total => {
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return formatKredits(total);
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})
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}),
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totalKreditsEarned: computed(function() {
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return this.kredits.Contribution.functions.totalKreditsEarned(true)
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.then(total => total.toNumber());
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}),
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async loadInitialData () {
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const numCachedContributors = await this.browserCache.contributors.length();
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if (numCachedContributors > 0) {
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await this.loadContributorsFromCache();
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this.set('contributorsNeedSync', true);
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} else {
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await this.fetchContributors();
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}
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const numCachedContributions = await this.browserCache.contributions.length();
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if (numCachedContributions > 0) {
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await this.loadContributionsFromCache();
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this.set('contributionsNeedSync', true);
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} else {
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await this.fetchContributions({ page: { size: 30 } });
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}
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return Promise.resolve();
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},
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addContributor (attributes) {
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if (attributes.github_uid) {
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const uidInt = parseInt(attributes.github_uid);
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attributes.github_uid = uidInt;
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}
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console.debug('[kredits] add contributor', attributes);
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return this.kredits.Contributor.add(attributes, { gasLimit: 350000 })
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.then(data => {
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console.debug('[kredits] add contributor response', data);
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});
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},
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updateContributor (id, attributes) {
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if (attributes.github_uid) {
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const uidInt = parseInt(attributes.github_uid);
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attributes.github_uid = uidInt;
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}
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console.debug('[kredits] update contributor', attributes);
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return this.kredits.Contributor.updateProfile(id, attributes, { gasLimit: 350000 })
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.then(data => {
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console.debug('[kredits] updateProfile response', data);
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});
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},
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fetchContributors () {
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console.debug(`[kredits] Fetching all contributors from the network`);
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return this.kredits.Contributor.all()
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.then(contributors => {
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return contributors.forEach(data => {
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this.loadContributorFromData(data);
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return;
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});
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})
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.then(() => {
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return this.cacheLoadedContributors();
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});
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},
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loadContributorFromData(data) {
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const contributor = Contributor.create(processContributorData(data));
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const loadedContributor = this.contributors.findBy('id', contributor.id);
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if (loadedContributor) { this.contributors.removeObject(loadedContributor); }
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this.contributors.pushObject(contributor);
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return contributor;
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},
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async cacheLoadedContributors () {
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for (const c of this.contributors) {
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await this.browserCache.contributors.setItem(c.id, c.serialize());
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}
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console.debug(`[kredits] Cached ${this.contributors.length} contributors in browser storage`);
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return Promise.resolve();
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},
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async loadContributorsFromCache () {
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return this.browserCache.contributors.iterate((value/*, key , iterationNumber */) => {
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this.contributors.pushObject(Contributor.create(JSON.parse(value)));
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}).then((/* result */) => {
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console.debug(`[kredits] Loaded ${this.contributors.length} contributors from cache`);
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});
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},
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syncContributors: task(function * () {
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yield this.fetchContributors();
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}),
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addContribution (attributes) {
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console.debug('[kredits] add contribution', attributes);
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return this.kredits.Contribution.addContribution(attributes, { gasLimit: 300000 })
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.then(data => {
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console.debug('[kredits] add contribution response', data);
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attributes.contributor = this.contributors.findBy('id', attributes.contributorId);
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const contribution = Contribution.create(attributes);
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contribution.set('pendingTx', data);
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contribution.set('confirmedAtBlock', data.blockNumber + 40320);
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this.contributions.pushObject(contribution);
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return contribution;
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});
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},
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fetchContributions (options = { page: { size: 200 } }) {
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console.debug(`[kredits] Fetching contributions from the network`);
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return this.kredits.Contribution.all(options)
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.then(contributions => {
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return contributions.map(data => {
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const contribution = this.loadContributionFromData(data);
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return contribution;
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});
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})
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.then(contributions => {
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const cacheWrites = contributions.map(c => {
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return this.browserCache.contributions.setItem(c.id.toString(), c.serialize());
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});
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return Promise.all(cacheWrites).then(() => {
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console.debug(`[kredits] Cached ${contributions.length} contributions in browser storage`);
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});
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});
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},
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loadContributionFromData(data) {
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const contribution = Contribution.create(processContributionData(data));
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contribution.set('contributor', this.contributors.findBy('id', data.contributorId.toString()));
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const loadedContribution = this.contributions.findBy('id', contribution.id);
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if (loadedContribution) { this.contributions.removeObject(loadedContribution); }
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this.contributions.pushObject(contribution);
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return contribution;
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},
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async cacheLoadedContributions () {
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for (const c of this.contributions) {
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await this.browserCache.contributions.setItem(c.id, c.serialize());
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}
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console.debug(`[kredits] Cached ${this.contributions.length} contributions in browser storage`);
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return Promise.resolve();
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},
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async loadContributionsFromCache () {
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return this.browserCache.contributions.iterate((value/*, key , iterationNumber */) => {
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this.contributions.pushObject(Contribution.create(JSON.parse(value)));
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}).then((/* result */) => {
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console.debug(`[kredits] Loaded ${this.contributions.length} contributions from cache`);
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});
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},
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syncContributions: task(function * () {
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yield this.fetchNewContributions.perform();
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yield this.syncUnconfirmedContributions.perform();
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}),
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fetchNewContributions: task(function * () {
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const count = yield this.kredits.Contribution.functions.contributionsCount();
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const lastKnownContributionId = Math.max.apply(null, this.contributions.mapBy('id'));
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const toFetch = count - lastKnownContributionId;
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if (toFetch > 0) {
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console.debug(`[kredits] Fetching ${toFetch} new contributions`);
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for (let id = lastKnownContributionId; id <= count; id++) {
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const data = yield this.kredits.Contribution.getById(id);
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const c = this.loadContributionFromData(data);
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yield this.browserCache.contributions.setItem(c.id.toString(), c.serialize());
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}
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} else {
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console.debug(`[kredits] No new contributions to fetch`);
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}
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}),
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syncUnconfirmedContributions: task(function * () {
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if (this.contributionsUnconfirmed.length > 0) {
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console.debug(`[kredits] Syncing unconfirmed contributions`);
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for (const c of this.contributionsUnconfirmed) {
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const data = yield this.kredits.Contribution.getById(c.id);
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const contribution = this.loadContributionFromData(data);
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yield this.browserCache.contributions.setItem(c.id.toString(), contribution.serialize());
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}
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} else {
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console.debug(`[kredits] No unconfirmed contributions to sync`);
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}
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}),
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veto (contributionId) {
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console.debug('[kredits] veto against', contributionId);
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const contribution = this.contributions.findBy('id', contributionId);
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return this.kredits.Contribution.functions.veto(contributionId, { gasLimit: 300000 })
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.then(data => {
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console.debug('[kredits] veto response', data);
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contribution.set('pendingTx', data);
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return data;
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});
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},
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getCurrentUser: computed('kredits.provider', 'currentUserAccounts.[]', function() {
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if (isEmpty(this.currentUserAccounts)) {
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return Promise.resolve();
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}
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return this.kredits.Contributor
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.functions.getContributorIdByAddress(this.currentUserAccounts.firstObject)
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.then((id) => {
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// check if the user is a contributor or not
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if (id === 0) {
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return Promise.resolve();
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} else {
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return this.kredits.Contributor.getById(id);
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}
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});
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}),
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// Contract events
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addContractEventHandlers () {
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this.kredits.Contributor
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.on('ContributorProfileUpdated', this.handleContributorChange.bind(this))
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.on('ContributorAccountUpdated', this.handleContributorChange.bind(this))
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.on('ContributorAdded', this.handleContributorChange.bind(this))
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this.kredits.Contribution
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.on('ContributionAdded', this.handleContributionAdded.bind(this))
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.on('ContributionVetoed', this.handleContributionVetoed.bind(this))
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this.kredits.Token
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.on('Transfer', this.handleTransfer.bind(this));
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},
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async handleContributorChange (contributorId, ...args) {
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console.debug('[kredits] Contributor add/update event received for ID', contributorId);
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console.debug('[kredits] Event data:', args);
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const contributorData = await this.kredits.Contributor.getById(contributorId);
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const newContributor = Contributor.create(contributorData);
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const oldContributor = this.contributors.findBy('id', contributorId.toString());
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if (oldContributor) {
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console.debug('[kredits] old contributor', oldContributor);
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this.contributors.removeObject(oldContributor);
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}
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console.debug('[kredits] new contributor', newContributor);
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this.contributors.pushObject(newContributor);
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},
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async handleContributionAdded (id, contributorId, amount) {
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console.debug('[kredits] ContributionAdded event received', { id, contributorId, amount });
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const pendingContribution = this.contributions.find(c => {
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return (c.id === null) &&
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(c.contributorId.toString() === contributorId.toString()) &&
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(c.amount.toString() === amount.toString());
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});
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if (pendingContribution) {
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const attributes = await this.kredits.Contribution.getById(id);
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attributes.contributor = this.contributors.findBy('id', attributes.contributorId.toString());
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const newContribution = Contribution.create(attributes);
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this.contributions.addObject(newContribution);
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this.contributions.removeObject(pendingContribution);
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}
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},
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handleContributionVetoed (contributionId) {
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console.debug('[kredits] ContributionVetoed event received for ', contributionId);
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const contribution = this.contributions.findBy('id', contributionId);
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console.debug('[kredits] contribution', contribution);
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if (contribution) {
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contribution.set('vetoed', true);
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contribution.set('pendingTx', null);
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}
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},
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handleTransfer (from, to, value) {
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value = value.toNumber();
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this.contributors
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.findBy('address', from)
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.decrementProperty('balance', value);
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this.contributors
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.findBy('address', to)
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.incrementProperty('balance', value);
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},
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});
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