'use strict'
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module.exports = move
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var nodeFs = require('fs')
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var rimraf = require('rimraf')
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var validate = require('aproba')
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var copy = require('copy-concurrently')
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var RunQueue = require('run-queue')
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var extend = Object.assign || require('util')._extend
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function promisify (Promise, fn) {
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return function () {
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var args = [].slice.call(arguments)
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return new Promise(function (resolve, reject) {
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return fn.apply(null, args.concat(function (err, value) {
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if (err) {
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reject(err)
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} else {
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resolve(value)
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}
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}))
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})
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}
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}
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function move (from, to, opts) {
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validate('SSO|SS', arguments)
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opts = extend({}, opts || {})
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var Promise = opts.Promise || global.Promise
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var fs = opts.fs || nodeFs
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var rimrafAsync = promisify(Promise, rimraf)
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var renameAsync = promisify(Promise, fs.rename)
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opts.top = from
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var queue = new RunQueue({
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maxConcurrency: opts.maxConcurrency,
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Promise: Promise
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})
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opts.queue = queue
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opts.recurseWith = rename
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queue.add(0, rename, [from, to, opts])
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return queue.run().then(function () {
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return remove(from)
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}, function (err) {
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// if the target already exists don't clobber it
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if (err.code === 'EEXIST' || err.code === 'EPERM') {
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return passThroughError()
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} else {
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return remove(to).then(passThroughError, passThroughError)
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}
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function passThroughError () {
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return Promise.reject(err)
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}
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})
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function remove (target) {
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var opts = {
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unlink: fs.unlink,
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chmod: fs.chmod,
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stat: fs.stat,
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lstat: fs.lstat,
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rmdir: fs.rmdir,
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readdir: fs.readdir,
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glob: false
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}
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return rimrafAsync(target, opts)
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}
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function rename (from, to, opts, done) {
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return renameAsync(from, to).catch(function (err) {
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if (err.code !== 'EXDEV') {
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return Promise.reject(err)
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} else {
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return remove(to).then(function () {
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return copy.item(from, to, opts)
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})
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}
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})
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}
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}
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