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helpers.js
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helpers.js
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const log = require('debug')('synpress:helpers');
const axios = require('axios');
const fs = require('fs').promises;
const path = require('path');
const { ethers } = require('ethers');
const download = require('download');
const packageJson = require('./package.json');
const PRESET_NETWORKS = Object.freeze({
mainnet: {
networkName: 'mainnet',
networkId: 1,
isTestnet: false,
},
goerli: {
networkName: 'goerli',
networkId: 5,
isTestnet: true,
},
sepolia: {
networkName: 'sepolia',
networkId: 11155111,
isTestnet: true,
},
});
let selectedNetwork = PRESET_NETWORKS.mainnet;
module.exports = {
async setNetwork(network) {
log(`Setting network to ${JSON.stringify(network)}`);
if (Object.keys(PRESET_NETWORKS).includes(network)) {
selectedNetwork = PRESET_NETWORKS[network];
}
if (network === 'localhost') {
const provider = new ethers.JsonRpcProvider('http://127.0.0.1:8545');
const { chainId, name } = await provider.getNetwork();
selectedNetwork = {
networkName: name,
networkId: chainId,
isTestnet: true,
};
} else if (typeof network === 'object') {
selectedNetwork = {
networkName: network.networkName,
networkId: Number(network.chainId),
isTestnet: network.isTestnet,
};
}
// todo: handle a case when setNetwork() is triggered by changeNetwork() with a string of already added custom networks
},
getNetwork: () => {
log(`Current network data: ${selectedNetwork}`);
return selectedNetwork;
},
getSynpressPath() {
if (process.env.SYNPRESS_LOCAL_TEST) {
return '.';
} else {
return path.dirname(require.resolve(packageJson.name));
}
},
async createDirIfNotExist(path) {
try {
log(`Checking if directory exists on path: ${path}`);
await fs.access(path);
return true;
} catch (e) {
if (e.code === 'ENOENT') {
log(`Creating directory as it doesn't exist..`);
await fs.mkdir(path);
return true;
}
throw new Error(
`[createDirIfNotExist] Unhandled error from fs.access() with following error:\n${e}`,
);
}
},
async checkDirOrFileExist(path) {
try {
log(`Checking if directory exists on path: ${path}`);
await fs.access(path);
return true;
} catch (e) {
if (e.code === 'ENOENT') {
log(`Directory or file doesn't exist`);
return false;
}
throw new Error(
`[checkDirOrFileExist] Unhandled error from fs.access() with following error:\n${e}`,
);
}
},
async getMetamaskReleases(version) {
log(`Trying to find metamask version ${version} in GitHub releases..`);
let filename;
let downloadUrl;
let tagName;
let response;
try {
if (version === 'latest' || !version) {
if (process.env.GH_USERNAME && process.env.GH_PAT) {
response = await axios.get(
'https://api.github.com/repos/metamask/metamask-extension/releases',
{
auth: {
username: process.env.GH_USERNAME,
password: process.env.GH_PAT,
},
},
);
} else {
response = await axios.get(
'https://api.github.com/repos/metamask/metamask-extension/releases',
);
}
filename = response.data[0].assets[0].name;
downloadUrl = response.data[0].assets[0].browser_download_url;
tagName = response.data[0].tag_name;
log(
`Metamask version found! Filename: ${filename}; Download url: ${downloadUrl}; Tag name: ${tagName}`,
);
} else if (version) {
filename = `metamask-chrome-${version}.zip`;
downloadUrl = `https://github.com/MetaMask/metamask-extension/releases/download/v${version}/metamask-chrome-${version}.zip`;
tagName = `metamask-chrome-${version}`;
log(
`Metamask version found! Filename: ${filename}; Download url: ${downloadUrl}; Tag name: ${tagName}`,
);
}
return {
filename,
downloadUrl,
tagName,
};
} catch (e) {
if (e.response && e.response.status === 403) {
throw new Error(
`[getMetamaskReleases] Unable to fetch metamask releases from GitHub because you've been rate limited! Please set GH_USERNAME and GH_PAT environment variables to avoid this issue or retry again.`,
);
}
throw new Error(
`[getMetamaskReleases] Unable to fetch metamask releases from GitHub with following error:\n${e}`,
);
}
},
async download(url, destination) {
try {
log(
`Trying to download and extract file from: ${url} to following path: ${destination}`,
);
if (process.env.GH_USERNAME && process.env.GH_PAT) {
await download(url, destination, {
extract: true,
auth: `${process.env.GH_USERNAME}:${process.env.GH_PAT}`,
});
} else {
await download(url, destination, {
extract: true,
});
}
} catch (e) {
throw new Error(
`[download] Unable to download metamask release from: ${url} to: ${destination} with following error:\n${e}`,
);
}
},
async prepareMetamask(version) {
const release = await this.getMetamaskReleases(version);
const downloadsDirectory = path.resolve(__dirname, 'downloads');
await this.createDirIfNotExist(downloadsDirectory);
const metamaskDirectory = path.join(downloadsDirectory, release.tagName);
const metamaskDirectoryExists = await this.checkDirOrFileExist(
metamaskDirectory,
);
const metamaskManifestFilePath = path.join(
downloadsDirectory,
release.tagName,
'manifest.json',
);
const metamaskManifestFileExists = await this.checkDirOrFileExist(
metamaskManifestFilePath,
);
if (!metamaskDirectoryExists && !metamaskManifestFileExists) {
await this.download(release.downloadUrl, metamaskDirectory);
} else {
log('Metamask is already downloaded');
}
return metamaskDirectory;
},
};