split out some more rpc functionality and fix broken module paths

lib/commands/upload.js

@@ -0,0 +1,37 @@
+/*jshint esversion: 6 */
+const Upload = module.exports;
+const Util = require("../common-util");
+const Pinning = require("./pin-rpc");
+const nThen = require("nthen");
+
+// upload_status
+Upload.upload_status = function (Env, safeKey, filesize, _cb) { // FIXME FILES
+    var cb = Util.once(Util.mkAsync(_cb));
+
+    // validate that the provided size is actually a positive number
+    if (typeof(filesize) !== 'number' &&
+        filesize >= 0) { return void cb('E_INVALID_SIZE'); }
+
+    if (filesize >= Env.maxUploadSize) { return cb('TOO_LARGE'); }
+
+    nThen(function (w) {
+        var abortAndCB = Util.both(w.abort, cb);
+        Env.blobStore.status(safeKey, w(function (err, inProgress) {
+            // if there's an error something is weird
+            if (err) { return void abortAndCB(err); }
+
+            // we cannot upload two things at once
+            if (inProgress) { return void abortAndCB(void 0, true); }
+        }));
+    }).nThen(function () {
+        // if yuo're here then there are no pending uploads
+        // check if you have space in your quota to upload something of this size
+        Pinning.getFreeSpace(Env, safeKey, function (e, free) {
+            if (e) { return void cb(e); }
+            if (filesize >= free) { return cb('NOT_ENOUGH_SPACE'); }
+            cb(void 0, false);
+        });
+    });
+};
+
+