Use ResourceMapper in copy handler

Author: rubensworks

lib/handlers/copy.js

@@ -14,7 +14,7 @@ const url = require('url')
  * "Save an external resource to Solid" type apps.
  * @method handler
  */
-function handler (req, res, next) {
+async function handler (req, res, next) {
   const copyFrom = req.header('Source')
   if (!copyFrom) {
     return next(error(400, 'Source header required'))
@@ -23,7 +23,7 @@ function handler (req, res, next) {
   const serverRoot = utils.getBaseUri(req)
   const copyFromUrl = fromExternal ? copyFrom : serverRoot + copyFrom
   const copyTo = res.locals.path || req.path
-  const copyToPath = utils.reqToPath(req)
+  const { path: copyToPath } = await req.app.locals.ldp.resourceMapper.mapUrlToFile({ url: req })
   ldpCopy(copyToPath, copyFromUrl, function (err) {
     if (err) {
       let statusCode = err.statusCode || 500