Update builder.release.upload for robustness; make upload location configurable

extra/builder/release/upload/upload.factor

@@ -1,5 +1,5 @@
 
-USING: kernel namespaces io io.files
+USING: kernel namespaces sequences arrays io io.files
        builder.util
        builder.common
        builder.release.archive ;
@@ -8,17 +8,47 @@ IN: builder.release.upload
 
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
-: remote-location ( -- dest )
-  "factorcode.org:/var/www/factorcode.org/newsite/downloads"
-  platform
-  append-path ;
+SYMBOL: upload-host
 
-: (upload) ( -- )
-  { "scp" archive-name remote-location } to-strings
-  [ "Error uploading binary to factorcode" print ]
-  run-or-bail ;
+SYMBOL: upload-username
+
+SYMBOL: upload-directory
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: remote-location ( -- dest )
+  upload-directory get platform append ;
+
+: remote-archive-name ( -- dest )
+  remote-location "/" archive-name 3append ;
+
+: temp-archive-name ( -- dest )
+  remote-archive-name ".incomplete" append ;
+
+: upload-command ( -- args )
+  "scp"
+  archive-name
+  [ upload-username get % "@" % upload-host get % ":" % temp-archive-name % ] "" make
+  3array ;
+
+: rename-command ( -- args )
+  [
+    "ssh" ,
+    upload-host get ,
+    "-l" ,
+    upload-username get ,
+    "mv" ,
+    temp-archive-name ,
+    remote-archive-name ,
+  ] { } make ;
+
+: upload-temp-file ( -- )
+  upload-command [ "Error uploading binary to factorcode" print ] run-or-bail ;
+
+: rename-temp-file ( -- )
+  rename-command [ "Error renaming binary on factorcode" print ] run-or-bail ;
 
 : upload ( -- )
   upload-to-factorcode get
-    [ (upload) ]
+    [ upload-temp-file rename-temp-file ]
   when ;