import path from 'path';

import fsp from 'fs-promise';

import fse from 'fs-extra';

export function copy(src, dest, options) {

options = options || {};

return Promise.all([

fsp.stat(src),

fsp.exists(dest)

.then(exists => {

if (!exists) {

return false;

}

return fsp.stat(dest);

})

])

.then(([srcStat, destStat]) => {

if (srcStat.isFile() && destStat && destStat.isDirectory()) {

let filename = path.basename(src);

dest = path.join(dest, filename);

}

return new Promise((resolve, reject) => {

fse.copy(src, dest, options, err => {

if (err) {

reject(err);

}

resolve();

});

});

});

}