file_manager: refactor upload logic

Break gcode and config file uploads into their own functions.  Add a 'primary_config' argument to config file uploads.  If set to true, the upload will overwrite printer.cfg.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

moonraker/plugins/file_manager.py

@@ -294,23 +294,71 @@ class FileManager:
         return dict(new_list)
 
     async def process_file_upload(self, request):
-        start_print = print_ongoing = False
-        dir_path = ""
         # lookup root file path
-        root_args = request.arguments.get('root', ['gcodes'])
-        root = root_args[0].strip()
-        base_path = self.file_paths.get(root, None)
-        if base_path is None:
-            raise self.server.error(400, "Unknown root path")
-        # check relative path
-        path_args = request.arguments.get('path', [])
-        if path_args:
-            dir_path = path_args[0].decode().lstrip("/")
-        # check if print should be started after a "gcodes" upload
+        root = self._get_argument(request, 'root', "gcodes")
         if root == "gcodes":
-            print_args = request.arguments.get('print', [])
-            if print_args:
-                start_print = print_args[0].decode().lower() == "true"
+            result = await self._do_gcode_upload(request)
+        elif root == "config":
+            result = self._do_config_upload(request)
+        else:
+            raise self.server.error(400, "Unknown root path")
+        return result
+
+    async def _do_gcode_upload(self, request):
+        start_print = print_ongoing = False
+        base_path = self.file_paths.get("gcodes", "")
+        if not base_path:
+            raise self.server.error(400, "Gcodes root not available")
+        start_print = self._get_argument(request, 'print', "false") == "true"
+        upload = self._get_upload_info(request, base_path)
+        # Verify that the operation can be done if attempting to upload a gcode
+        try:
+            print_ongoing = await self._handle_operation_check(
+                upload['full_path'])
+        except self.server.error as e:
+            if e.status_code == 403:
+                raise self.server.error(
+                    403, "File is loaded, upload not permitted")
+            else:
+                # Couldn't reach Klippy, so it should be safe
+                # to permit the upload but not start
+                start_print = False
+        # Don't start if another print is currently in progress
+        start_print = start_print and not print_ongoing
+        self._write_file(upload)
+        if start_print:
+            # Make a Klippy Request to "Start Print"
+            gcode_apis = self.server.lookup_plugin('gcode_apis')
+            try:
+                await gcode_apis.gcode_start_print(
+                    request.path, 'POST', {'filename': upload['filename']})
+            except self.server.error:
+                # Attempt to start print failed
+                start_print = False
+        self.server.notify_filelist_changed(upload['filename'], 'added')
+        return {'result': upload['filename'], 'print_started': start_print}
+
+    def _do_config_upload(self, request):
+        req_arg = self._get_argument(request, 'primary_config', "false")
+        is_main_config = req_arg.lower() == "true"
+        cfg_base = "printer.cfg" if is_main_config else "config"
+        cfg_path = self.file_paths.get(cfg_base, None)
+        if cfg_path is None:
+            raise self.server.error(
+                "Printer configuration location on disk not set")
+        upload = self._get_upload_info(request, cfg_path)
+        self._write_file(upload)
+        return {'result': upload['filename']}
+
+    def _get_argument(self, request, name, default=None):
+        args = request.arguments.get(name, None)
+        if args is not None:
+            return args[0].decode().strip()
+        return default
+
+    def _get_upload_info(self, request, base_path):
+        # check relative path
+        dir_path = self._get_argument(request, 'path', "")
         # fetch the upload from the request
         if len(request.files) != 1:
             raise self.server.error(
@@ -321,9 +369,7 @@ class FileManager:
                 400, "Bad Request, can only process a single file upload")
         upload = f_list[0]
         if os.path.isfile(base_path):
-            # If the root path points to a file, write directly to it.  This
-            # is the case for printer.cfg
-            filename = root
+            filename = os.path.basename(base_path)
             full_path = base_path
             dir_path = ""
         else:
@@ -335,42 +381,20 @@ class FileManager:
         if not full_path.startswith(base_path):
             raise self.server.error(
                 "Cannot write to path: %s" % (full_path))
-        # Verify that the operation can be done if attempting to upload a gcode
-        if root == 'gcodes':
-            try:
-                print_ongoing = await self._handle_operation_check(full_path)
-            except self.server.error as e:
-                if e.status_code == 403:
-                    raise self.server.error(
-                        403, "File is loaded, upload not permitted")
-                else:
-                    # Couldn't reach Klippy, so it should be safe
-                    # to permit the upload but not start
-                    start_print = False
+        return {
+            'filename': filename,
+            'body': upload['body'],
+            'dir_path': dir_path,
+            'full_path': full_path}
 
-        # Don't start if another print is currently in progress
-        start_print = start_print and not print_ongoing
+    def _write_file(self, upload):
         try:
-            if dir_path:
-                os.makedirs(os.path.dirname(full_path), exist_ok=True)
-            with open(full_path, 'wb') as fh:
+            if upload['dir_path']:
+                os.makedirs(os.path.dirname(upload['full_path']), exist_ok=True)
+            with open(upload['full_path'], 'wb') as fh:
                 fh.write(upload['body'])
         except Exception:
             raise self.server.error(500, "Unable to save file")
-        if start_print:
-            # Make a Klippy Request to "Start Print"
-            gcode_apis = self.server.lookup_plugin('gcode_apis')
-            try:
-                await gcode_apis.gcode_start_print(
-                    request.path, 'POST', {'filename': filename})
-            except self.server.error:
-                # Attempt to start print failed
-                start_print = False
-        if root == 'gcodes':
-            self.server.notify_filelist_changed(filename, 'added')
-            return {'result': filename, 'print_started': start_print}
-        else:
-            return {'result': filename}
 
     def get_file_list(self, format_list=False, base='gcodes'):
         try: