feat: add 'Open in StackBlitz' button to header (#10)

packages/bolt/app/components/header/Header.tsx

@@ -0,0 +1,15 @@
+import { ClientOnly } from 'remix-utils/client-only';
+import { OpenStackBlitz } from './OpenStackBlitz.client';
+
+export function Header() {
+  return (
+    <header className="flex items-center bg-white p-4 border-b border-gray-200 h-[var(--header-height)]">
+      <div className="flex items-center gap-2">
+        <div className="text-2xl font-semibold text-accent">Bolt</div>
+      </div>
+      <div className="ml-auto">
+        <ClientOnly>{() => <OpenStackBlitz />}</ClientOnly>
+      </div>
+    </header>
+  );
+}

packages/bolt/app/components/header/OpenStackBlitz.client.tsx

@@ -0,0 +1,82 @@
+import path from 'path';
+import { useStore } from '@nanostores/react';
+import sdk from '@stackblitz/sdk';
+import type { FileMap } from '~/lib/stores/files';
+import { workbenchStore, type ArtifactState } from '~/lib/stores/workbench';
+import { WORK_DIR } from '~/utils/constants';
+import { memo, useCallback, useEffect, useState } from 'react';
+import type { ActionState } from '~/lib/runtime/action-runner';
+
+// return false if some file-writing actions haven't completed
+const fileActionsComplete = (actions: Record<string, ActionState>) => {
+  return !Object.values(actions).some((action) => action.type === 'file' && action.status !== 'complete');
+};
+
+// extract relative path and content from file, wrapped in array for flatMap use
+const extractContent = ([file, value]: [string, FileMap[string]]) => {
+  // ignore directory entries
+  if (!value || value.type !== 'file') {
+    return [];
+  }
+
+  const relative = path.relative(WORK_DIR, file);
+  const parts = relative.split(path.sep);
+
+  // ignore hidden files
+  if (parts.some((part) => part.startsWith('.'))) {
+    return [];
+  }
+
+  return [[relative, value.content]];
+};
+
+// subscribe to changes in first artifact's runner actions
+const useFirstArtifact = (): [boolean, ArtifactState] => {
+  const [hasLoaded, setHasLoaded] = useState(false);
+  const artifacts = useStore(workbenchStore.artifacts);
+  const firstArtifact = artifacts[workbenchStore.artifactList[0]];
+
+  const handleActionChange = useCallback(
+    (actions: Record<string, ActionState>) => setHasLoaded(fileActionsComplete(actions)),
+    [firstArtifact],
+  );
+
+  useEffect(() => {
+    if (firstArtifact) {
+      return firstArtifact.runner.actions.subscribe(handleActionChange);
+    }
+
+    return undefined;
+  }, [firstArtifact]);
+
+  return [hasLoaded, firstArtifact];
+};
+
+export const OpenStackBlitz = memo(() => {
+  const [artifactLoaded, artifact] = useFirstArtifact();
+
+  const handleClick = useCallback(() => {
+    // extract relative path and content from files map
+    const workbenchFiles = workbenchStore.files.get();
+    const files = Object.fromEntries(Object.entries(workbenchFiles).flatMap(extractContent));
+
+    // we use the first artifact's title for the StackBlitz project
+    const { title } = artifact;
+
+    sdk.openProject({
+      title,
+      template: 'node',
+      files,
+    });
+  }, [artifact]);
+
+  if (!artifactLoaded) {
+    return null;
+  }
+
+  return (
+    <a onClick={handleClick} className="cursor-pointer">
+      <img alt="Open in StackBlitz" src="https://developer.stackblitz.com/img/open_in_stackblitz.svg" />
+    </a>
+  );
+});