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