Load jbrowse config passed as CLI arg to desktop and create file association for .jbrowse files on desktop (#5142)

Author: amorison

products/jbrowse-desktop/electron/electron.ts

@@ -208,11 +208,15 @@ async function createWindow() {
     })
   })
 
-  await mainWindow.loadURL(
-    app.isPackaged
-      ? `file://${path.join(app.getAppPath(), 'build', 'index.html')}`
-      : url.format(devServerUrl),
-  )
+  const appUrl = app.isPackaged
+    ? new URL(`file://${path.join(app.getAppPath(), 'build', 'index.html')}`)
+    : devServerUrl
+  const lastArg = process.argv.at(-1)
+  if (lastArg?.endsWith(".jbrowse")) {
+    appUrl.searchParams.append('config', lastArg)
+  }
+
+  await mainWindow.loadURL(url.format(appUrl))
 
   mainWindow.webContents.setWindowOpenHandler(details => {
     // unsure how to handle

products/jbrowse-desktop/package.json

@@ -114,6 +114,16 @@
     "appId": "org.jbrowse2.app",
     "productName": "JBrowse 2",
     "copyright": "Copyright © 2019",
+    "fileAssociations": [
+      {
+        "ext": "jbrowse",
+        "name": "JBrowse",
+        "role": "Editor"
+      }
+    ],
+    "nsis": {
+      "perMachine": true
+    },
     "win": {
       "sign": "./sign.js",
       "signingHashAlgorithms": [