Add slackbot Action

.github/requirements.txt

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+transformers
+protobuf
+sentencepiece
+torch

.github/slack-bot.py

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+import os
+import json
+from transformers import pipeline
+
+# Get the PR body and labels from environment variables
+pr_body = os.environ.get('PR_BODY', '')
+pr_labels_json = os.environ.get('PR_LABELS_JSON', '[]')
+pr_labels = json.loads(pr_labels_json)
+
+# Summarization (example model, could be adjusted)
+summarizer = pipeline('summarization', model='tuner007/pegasus_summarizer')
+neutral_summary = summarizer(pr_body, max_length=200, min_length=25, do_sample=False)[0]['summary_text']
+
+# PR label types with associated metadata
+pr_label_types = {
+    'PR: Active': ['Active', 'https://github.com/search?q=org%3Aramp4-pcar4+state%3A%22open%22+type%3A%22pr%22+label%3A%22PR%3A+Active%22&type=pullrequests'],
+    'PR: Build': ['Build', 'https://github.com/search?q=org%3Aramp4-pcar4+state%3A%22open%22+type%3A%22pr%22+label%3A%22PR%3A+Active%22%2C%22PR%3A+Build%22+&type=pullrequests'],
+    'PR: Frontend': ['Frontend', 'https://github.com/search?q=org%3Aramp4-pcar4+state%3A%22open%22+type%3A%22pr%22+label%3A%22PR%3A+Active%22%2C%22PR%3A+Frontend%22+&type=pullrequests'],
+    'PR: Geo': ['Geo', 'https://github.com/search?q=org%3Aramp4-pcar4+state%3A%22open%22+type%3A%22pr%22+label%3A%22PR%3A+Active%22%2C%22PR%3A+Geo%22+&type=pullrequests']
+}
+
+# Format PR label links as Slack mrkdwn links
+pr_label_str = ", ".join(
+    f"<{pr_label_types[label['name']][1]}|{pr_label_types[label['name']][0]}>"
+    for label in pr_labels if pr_label_types.get(label['name'])
+)
+if (len(pr_label_str) == 0):
+    pr_label_str = "None"
+
+# Handle regular labels (not in pr_label_types)
+reg_label_str = ", ".join(
+    label['name'] for label in pr_labels if pr_label_types.get(label['name']) is None
+)
+if (len(reg_label_str) == 0):
+    reg_label_str = "None"
+
+# Write all results to environment 
+with open(os.environ['GITHUB_ENV'], 'a') as env_file:
+    env_file.write(f'NEUTRAL_SUMMARY={neutral_summary}\n')
+    env_file.write(f'PR_LABEL_STR={pr_label_str}\n')
+    env_file.write(f'REG_LABEL_STR={reg_label_str}\n')

.github/workflows/slack-bot.yml

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+name: slack-PR-message
+on:
+  pull_request_target:
+    types:
+      - opened
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  post-to-slack:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check user permissions (allow only those w/ write access)
+        id: permission_check
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          user_permission=$(curl -s -H "Authorization: Bearer $GITHUB_TOKEN" \
+            "https://api.github.com/repos/${{ github.repository }}/collaborators/${{ github.event.pull_request.user.login }}/permission" | jq -r .permission)
+          if [[ "$user_permission" != "write" && "$user_permission" != "admin" ]]; then
+            echo "User does not have write access. Exiting."
+            exit 1
+          fi
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install Python dependency
+        run: pip install -r .github/requirements.txt
+
+      - name: Summarize PR body and process labels
+        id: summarize
+        env:
+          PR_LABELS_JSON: ${{ toJSON(github.event.pull_request.labels) }}
+          PR_BODY: ${{ github.event.pull_request.body }}
+        run: python .github/slack-bot.py
+
+      - name: Post to a Slack channel
+        id: slack
+        uses: slackapi/[email protected]
+        with:
+          channel-id: 'C08080W3W0Y'
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "New *storylines-editor* PR by *${{ github.event.pull_request.user.login }}*"
+                  }
+                },
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "*Title*: ${{ github.event.pull_request.title }}\n*PR Type*: ${{ env.PR_LABEL_STR }}\n*Other labels*: ${{ env.REG_LABEL_STR }}\n*Link*: ${{ github.event.pull_request.html_url }}"
+                  }
+                },
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "*PR Summary*:\n${{ env.NEUTRAL_SUMMARY }}"
+                  }
+                }
+              ]
+            }
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}