ci: include PyCafe playground link

Author: maartenbreddels

.bumpversion.cfg

@@ -15,6 +15,8 @@ values =
 	b
 	g
 
+[bumpversion:file:.github/pycafe-create-status.py]
+
 [bumpversion:file:solara/__init__.py]
 
 [bumpversion:file:packages/solara-assets/solara_assets/__init__.py]

.github/pycafe-create-status.py

@@ -0,0 +1,73 @@
+import os
+import sys
+from urllib.parse import quote
+
+from github import Github
+
+# Authenticate with GitHub
+access_token = os.getenv("GITHUB_TOKEN")
+g = Github(access_token)
+
+
+repo_name = "widgetti/solara"
+commit_sha = sys.argv[1]  # e.g d39677a321bca34df41ecc87ff7e539b450207f2
+run_id = sys.argv[2]  # e.g 1324, usually obtained via ${{ github.run_id }} or ${{ github.event.workflow_run.id }} in GitHub Actions workflow files
+type = "solara"  # streamlit/dash/vizro/solara/panel
+
+# your default code
+code = """# this is a playground snippet using solara build on GitHub Actions
+# if this link is old, the build artifact might be old, which causes the installation
+# to fail
+import solara
+
+# reactive variables will trigger a component rerender
+# when changed.
+# When you change the default (now 0), hit the embedded browser
+# refresh button to reset the state
+clicks = solara.reactive(0)
+
+
+@solara.component
+def Page():
+    print("The component render function gets called")
+    # change this code, and see the output refresh
+    color = "green"
+    if clicks.value >= 5:
+        color = "red"
+
+    def increment():
+        clicks.value += 1
+        print("clicks", clicks)  # noqa
+
+    solara.Button(label=f"Clicked: {clicks}", on_click=increment, color=color)
+
+
+# Solara also supports ipywidgets
+# remove the Page component and assign an ipywidget to
+# the page variable, e.g.
+# page = mywidget
+"""
+
+artifact_name = "solara-builds"  # name given in the GitHub Actions workflow file for the artifact
+
+# your default requirements, the wheel version number (1.43.0) is bumped up for each new release using bump2version
+requirements = f"""solara
+https://py.cafe/gh/artifact/{repo_name}/actions/runs/{run_id}/{artifact_name}/solara-1.43.0-py2.py3-none-any.whl
+https://py.cafe/gh/artifact/{repo_name}/actions/runs/{run_id}/{artifact_name}/solara_ui-1.43.0-py2.py3-none-any.whl
+"""
+
+# GitHub Python API
+repo = g.get_repo(repo_name)
+
+base_url = f"https://py.cafe/snippet/{type}/v1"
+url = f"{base_url}#code={quote(code)}&requirements={quote(requirements)}"
+
+# Define the deployment status
+state = "success"  # Options: 'error', 'failure', 'pending', 'success'
+description = "Test out this PR on a PyCafe playground environment"
+context = "PyCafe"
+
+# Create the status on the commit
+commit = repo.get_commit(commit_sha)
+commit.create_status(state="success", target_url=url, description=description, context="PyCafe")
+print(f"Deployment status added to commit {commit_sha}")

.github/workflows/pycafe.yml

@@ -0,0 +1,20 @@
+---
+name: PyCafe Playground Link
+on:
+  workflow_run:
+    workflows: [Test]
+    types:
+      - completed
+
+jobs:
+  create-status:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Create PyCafe status link
+        run: |
+          pip install PyGithub
+          python .github/pycafe-create-status.py ${{ github.event.workflow_run.head_sha }} ${{ github.event.workflow_run.id }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}