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executable file
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index.js
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executable file
Β·223 lines (187 loc) Β· 3.82 KB
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'use strict';
const fs = require('fs');
const nodePath = require('path');
const lazyReq = require('lazy-req')(require);
const del = lazyReq('del');
const download = lazyReq('download');
const osFilterObj = lazyReq('os-filter-obj');
const execa = lazyReq('execa');
/**
* Initialize the manager
*
* @param {String} destFolder
* @param {String} slugName
* @api public
*/
function binManager(destFolder, slugName) {
const _src = [];
const _dest = destFolder || '';
const _slug = slugName || '';
let _bin = '';
/**
* Get or set files to download
*
* @param {String} [src]
* @param {String} [os]
* @param {String} [arch]
* @api public
*/
function src(uri, os, arch) {
if (arguments.length === 0) {
return _src;
}
_src.push({
uri,
os,
arch
});
return this;
}
/**
* Get or set the binary
*
* @param {String} [bin]
* @api public
*/
function use(bin) {
if (arguments.length === 0) {
return _bin;
}
_bin = bin;
return this;
}
/**
* Get path to the binary folder
*
* @api public
*/
function path() {
return nodePath.join(_dest, _slug);
}
/**
* Get path to the binary
*
* @api public
*/
function bin() {
return nodePath.join(_dest, _slug, _bin);
}
/**
* Get paths to the remote binaries
*
* @api public
*/
function remote() {
return osFilterObj()(src());
}
/**
* Load existing files or download them
*
* @param {Object} [opts]
* @param {Function} callback
* @api public
*/
function load(opts, callback) {
const args = [].slice.call(arguments);
callback = args.pop();
opts = args.shift() || {extract: true};
if (!_bin) {
callback(new Error('No binary path setted. Call use(path).'));
return;
}
fs.stat(bin(), err => {
if (err && err.code === 'ENOENT') {
fetch(opts, callback);
return;
}
if (err) {
callback(err);
return;
}
callback();
});
}
/**
* Delete existing files
*
* @param {Object} [opts]
* @param {Function} callback
* @api public
*/
function unload(opts, callback) {
const args = [].slice.call(arguments);
callback = args.pop();
opts = args.shift() || {};
del()(path(), opts).then(() => {
callback();
}).catch(err => {
callback(err);
});
}
/**
* Run the binray
*
* @param {Array} [argv]
* @param {Object} [opts]
* @param {Function} callback
* @api public
*/
function run(argv, opts, callback) {
const args = [].slice.call(arguments);
callback = args.pop();
if (args.length === 2) {
opts = args.pop() || {};
argv = args.pop() || [];
} else if (typeof args[0] === 'object' && !Array.isArray(args[0])) {
opts = args.pop() || {};
} else if (Array.isArray(args[0])) {
argv = args.pop() || [];
} else {
argv = [argv] || [];
}
load(err => {
if (err) {
callback(err);
return;
}
execa()(bin(), argv, opts).then(result => {
callback(null, result);
}).catch(err => {
callback(err);
});
});
}
/**
* Download files
*
* @param {Object} [opts]
* @param {Function} callback
* @api pivate
*/
function fetch(opts, callback) {
const files = remote();
if (files.length === 0) {
callback(new Error('No binary found matching your system. It\'s probably not supported.'));
return;
}
const bfpath = path();
Promise.all(
files.map(f => download()(f.uri, bfpath, opts))
).then(data => {
callback(null, data);
}).catch(err => {
callback(err);
});
}
return {
src,
use,
path,
bin,
remote,
load,
unload,
run
};
}
module.exports = binManager;