Step file export to .jcad (#238)

* .jcad file export

* Put another timeout

* Nevermind

packages/base/src/commands.ts

@@ -22,11 +22,14 @@ import {
   explodedViewIcon,
   extrusionIcon,
   intersectionIcon,
+  requestAPI,
   sphereIcon,
   torusIcon,
   unionIcon
 } from './tools';
 import { JupyterCadPanel, JupyterCadWidget } from './widget';
+import { DocumentRegistry } from '@jupyterlab/docregistry';
+import { PathExt } from '@jupyterlab/coreutils';
 
 export function newName(type: string, model: IJupyterCadModel): string {
   const sharedModel = model.sharedModel;
@@ -404,6 +407,43 @@ const CAMERA_FORM = {
   }
 };
 
+const EXPORT_FORM = {
+  title: 'Export to .jcad',
+  schema: {
+    type: 'object',
+    required: ['Name'],
+    additionalProperties: false,
+    properties: {
+      Name: {
+        title: 'File name',
+        description: 'The exported file name',
+        type: 'string'
+      }
+    }
+  },
+  default: (context: DocumentRegistry.IContext<IJupyterCadModel>) => {
+    return {
+      Name: PathExt.basename(context.path).replace(
+        PathExt.extname(context.path),
+        '.jcad'
+      )
+    };
+  },
+  syncData: (context: DocumentRegistry.IContext<IJupyterCadModel>) => {
+    return (props: IDict) => {
+      const { Name } = props;
+      console.log(`export to ${Name}`);
+      requestAPI<{ done: boolean }>('jupytercad/export', {
+        method: 'POST',
+        body: JSON.stringify({
+          path: context.path,
+          newName: Name
+        })
+      });
+    };
+  }
+};
+
 /**
  * Add the FreeCAD commands to the application's command registry.
  */
@@ -645,6 +685,33 @@ export function addCommands(
       await dialog.launch();
     }
   });
+
+  commands.addCommand(CommandIDs.exportJcad, {
+    label: trans.__('Export to .jcad'),
+    isEnabled: () => {
+      return tracker.currentWidget
+        ? tracker.currentWidget.context.model.sharedModel.exportable
+        : false;
+    },
+    iconClass: 'fa fa-file-export',
+    execute: async () => {
+      const current = tracker.currentWidget;
+
+      if (!current) {
+        return;
+      }
+
+      const dialog = new FormDialog({
+        context: current.context,
+        title: EXPORT_FORM.title,
+        schema: EXPORT_FORM.schema,
+        sourceData: EXPORT_FORM.default(tracker.currentWidget?.context),
+        syncData: EXPORT_FORM.syncData(tracker.currentWidget?.context),
+        cancelButton: true
+      });
+      await dialog.launch();
+    }
+  });
 }
 
 /**
@@ -670,6 +737,8 @@ export namespace CommandIDs {
   export const updateAxes = 'jupytercad:updateAxes';
   export const updateExplodedView = 'jupytercad:updateExplodedView';
   export const updateCameraSettings = 'jupytercad:updateCameraSettings';
+
+  export const exportJcad = 'jupytercad:exportJcad';
 }
 
 namespace Private {

packages/schema/src/interfaces.ts

@@ -80,6 +80,7 @@ export interface IJupyterCadDoc extends YDocument<IJupyterCadDocChange> {
   metadata: JSONObject;
   outputs: JSONObject;
   readonly editable: boolean;
+  readonly exportable: boolean;
 
   objectExists(name: string): boolean;
   getObjectByName(name: string): IJCadObject | undefined;

packages/schema/src/model.ts

@@ -446,6 +446,7 @@ export class JupyterCadDoc
   }
 
   editable = true;
+  exportable = false;
 
   private _getObjectAsYMapByName(name: string): Y.Map<any> | undefined {
     for (const obj of this._objects) {
@@ -547,6 +548,7 @@ export class JupyterCadStepDoc extends JupyterCadDoc {
   }
 
   editable = false;
+  exportable = true;
 
   private _sourceObserver = (events: Y.YEvent<any>[]): void => {
     const changes: Array<{

python/jupytercad_core/jupyter-config/server-config/jupytercad_core.json

@@ -0,0 +1,7 @@
+{
+  "ServerApp": {
+    "jpserver_extensions": {
+      "jupytercad_core": true
+    }
+  }
+}

python/jupytercad_core/jupytercad_core/__init__.py

@@ -9,6 +9,20 @@
     warnings.warn("Importing 'jupytercad_core' outside a proper installation.")
     __version__ = "dev"
 
+from .handlers import setup_handlers
+
 
 def _jupyter_labextension_paths():
     return [{"src": "labextension", "dest": "@jupytercad/jupytercad-core"}]
+
+
+def _load_jupyter_server_extension(server_app):
+    """Registers the API handler to receive HTTP requests from the frontend extension.
+
+    Parameters
+    ----------
+    server_app: jupyterlab.labapp.LabApp
+        JupyterLab application instance
+    """
+    setup_handlers(server_app.web_app)
+    server_app.log.info("Registered jupytercad server extension")

python/jupytercad_core/jupytercad_core/handlers.py

@@ -0,0 +1,52 @@
+import json
+from pathlib import Path
+
+from jupyter_server.base.handlers import APIHandler
+from jupyter_server.utils import url_path_join, ApiPath, to_os_path
+import tornado
+
+
+class JCadExportHandler(APIHandler):
+    @tornado.web.authenticated
+    def post(self):
+        body = self.get_json_body()
+
+        # Get filename removing the drive prefix
+        file_name = body["path"].split(":")[1]
+        export_name = body["newName"]
+
+        root_dir = Path(self.contents_manager.root_dir).resolve()
+        file_name = Path(to_os_path(ApiPath(file_name), str(root_dir)))
+
+        with open(file_name, "r") as fobj:
+            file_content = fobj.read()
+
+        jcad = dict(
+            objects=[
+                dict(
+                    name=Path(export_name).stem,
+                    visible=True,
+                    shape="Part::Any",
+                    parameters=dict(
+                        Content=file_content, Type=str(Path(Path(file_name).suffix[1:]))
+                    ),
+                )
+            ],
+            metadata={},
+            options={},
+            outputs={},
+        )
+
+        with open(Path(file_name).parents[0] / export_name, "w") as fobj:
+            fobj.write(json.dumps(jcad, indent=2))
+
+        self.finish(json.dumps({"done": True}))
+
+
+def setup_handlers(web_app):
+    host_pattern = ".*$"
+
+    base_url = web_app.settings["base_url"]
+    route_pattern = url_path_join(base_url, "jupytercad", "export")
+    handlers = [(route_pattern, JCadExportHandler)]
+    web_app.add_handlers(host_pattern, handlers)

python/jupytercad_core/pyproject.toml

@@ -47,6 +47,7 @@ exclude = [".github", "binder"]
 [tool.hatch.build.targets.wheel.shared-data]
 "install.json" = "share/jupyter/labextensions/@jupytercad/jupytercad-core/install.json"
 "jupytercad_core/labextension" = "share/jupyter/labextensions/@jupytercad/jupytercad-core"
+"jupyter-config/server-config" = "etc/jupyter/jupyter_server_config.d"
 
 [tool.hatch.build.hooks.version]
 path = "jupytercad_core/_version.py"

python/jupytercad_lab/src/index.ts

@@ -104,6 +104,9 @@ const controlPanel: JupyterFrontEndPlugin<void> = {
  * Populates the application menus for the notebook.
  */
 function populateMenus(mainMenu: IMainMenu, isEnabled: () => boolean): void {
+  mainMenu.fileMenu.addItem({
+    command: CommandIDs.exportJcad
+  });
   // Add undo/redo hooks to the edit menu.
   mainMenu.editMenu.undoers.redo.add({
     id: CommandIDs.redo,

scripts/dev-install.py

@@ -23,6 +23,10 @@ def install_dev():
         execute(f"pip uninstall {py_package} -y")
         execute("jlpm clean:all", cwd=root_path / "python" / py_package)
         execute(f"pip install -e {python_package_prefix}/{py_package}")
+
+        if py_package == "jupytercad_core":
+            execute("jupyter server extension enable jupytercad_core")
+
         if py_package != "jupytercad_app":
             execute(
                 f"jupyter labextension develop {python_package_prefix}/{py_package} --overwrite"

ui-tests/tests/ui.spec.ts

@@ -24,7 +24,7 @@ test.describe('UI Test', () => {
     });
   });
 
-  test.describe('File rendering test', () => {
+  test.describe('File operations', () => {
     test.beforeAll(async ({ request }) => {
       const content = galata.newContentsHelper(request);
       await content.deleteDirectory('/examples');