name: Sync OpenAPI schema

# Updates REST, Webhooks, and GitHub Apps docs from github/rest-api-description.
# Opens a PR when generated OpenAPI data files change.

on:
  workflow_dispatch:
    inputs:
      SOURCE_BRANCH:
        description: 'Branch to pull the dereferenced OpenAPI source files from in the github/rest-api-descriptions repo.'
        type: string
        required: true
        default: 'main'
  repository_dispatch:
    types: [sync-openapi]
  schedule:
    - cron: '20 16 * * 1-5' # Run Mon-Fri at 16:20 UTC / 8:20 PST

permissions:
  contents: write
  pull-requests: write

# Cancel older syncs so stale OpenAPI data does not open older PRs.
concurrency:
  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
  cancel-in-progress: true

jobs:
  generate-decorated-files:
    if: github.repository == 'github/docs-internal'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository code
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0

      - name: Checkout rest-api-description repo
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          repository: github/rest-api-description
          path: rest-api-description
          ref: ${{ inputs.SOURCE_BRANCH || github.event.client_payload.ref || 'main' }}

      - uses: ./.github/actions/node-npm-setup

      - name: Sync the REST, Webhooks, and GitHub Apps schemas
        env:
          GITHUB_TOKEN: ${{ secrets.DOCS_BOT_PAT_BASE }}
          NODE_OPTIONS: '--max-old-space-size=8192'
        run: |
          npm run sync-rest -- \
            --source-repos rest-api-description \
            --output rest github-apps webhooks rest-redirects
          git status
          echo "Deleting the cloned github/rest-api-description repo..."
          rm -rf rest-api-description

      - name: Get the rest-api-description SHA being synced
        id: rest-api-description
        run: |
          OPENAPI_COMMIT_SHA=$(cat src/rest/lib/config.json | jq -r '.sha')
          echo "OPENAPI_COMMIT_SHA=$OPENAPI_COMMIT_SHA" >> $GITHUB_OUTPUT
          echo "Copied files from github/rest-api-description repo. Commit SHA: $OPENAPI_COMMIT_SHA"
          if [ -z $OPENAPI_COMMIT_SHA ]; then
            echo "OpenAPI commit SHA is empty!"
            exit 1
          fi

      - name: Create pull request
        env:
          GITHUB_TOKEN: ${{ secrets.DOCS_BOT_PAT_BASE }}
        run: |
          # Exit before branch creation so a no-op sync does not leave an orphan branch.
          changes=$(git diff --name-only | wc -l)
          if [[ $changes -eq 0 ]]; then
            echo "There are no changes to commit after running 'npm run sync-rest'. Exiting..."
            exit 0
          fi

          git config --global user.name "docs-bot"
          git config --global user.email "77750099+docs-bot@users.noreply.github.com"

          branchname=openapi-update-${{ steps.rest-api-description.outputs.OPENAPI_COMMIT_SHA }}

          remotesha=$(git ls-remote --heads origin $branchname)
          if [ -n "$remotesha" ]; then
            echo "Branch $branchname already exists in 'github/docs-internal'. Exiting..."
            exit 0
          fi

          git checkout -b $branchname
          git add .
          git commit -m "Add decorated OpenAPI schema files"
          git push origin $branchname

          echo "Creating pull request..."
          gh pr create \
            --title "Update OpenAPI Description" \
            --body '👋 humans. This PR updates the OpenAPI description with the latest changes. (Synced from github/rest-api-description@${{ steps.rest-api-description.outputs.OPENAPI_COMMIT_SHA }})

            Docs First Responders should follow [the acting-as-the-first-responder instructions](https://github.com/github/technical-content/blob/main/contributing-to-docs/first-responder/acting-as-the-first-responder.md?plain=1#L156).

            If CI does not pass or other problems arise, contact #technical-content on slack.

            _Generated by the [Sync OpenAPI schema](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) workflow run._' \
            --repo github/docs-internal \
            --label github-openapi-bot,workflow-generated \
            --head=$branchname \

      - uses: ./.github/actions/create-workflow-failure-issue
        id: create-failure-issue
        if: ${{ failure() && github.event_name != 'workflow_dispatch' }}
        with:
          token: ${{ secrets.DOCS_BOT_PAT_BASE }}

      - uses: ./.github/actions/slack-alert
        if: ${{ failure() && github.event_name != 'workflow_dispatch' }}
        with:
          slack_token: ${{ secrets.SLACK_DOCS_BOT_TOKEN }}
          issue_url: ${{ steps.create-failure-issue.outputs.issue_url }}