name: OpenWiki Update and Auto-merge

on:
  workflow_dispatch:
  schedule:
    - cron: "0 8 * * *"

permissions:
  contents: write
  pull-requests: write

concurrency:
  group: openwiki-update
  cancel-in-progress: false

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
        with:
          persist-credentials: true
          fetch-depth: 0

      - name: Set up Node.js
        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
        with:
          node-version: "22"

      - name: Install OpenWiki
        run: npm install --global openwiki@0.5.0 mermaid@11.16.0 jsdom@29.1.1

      - name: Run OpenWiki
        id: openwiki
        continue-on-error: true
        run: openwiki code --update --print
        env:
          OPENWIKI_PROVIDER: openrouter
          OPENROUTER_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}
          OPENWIKI_MODEL_ID: z-ai/glm-5.2
          LANGSMITH_API_KEY: ${{ secrets.LANGSMITH_API_KEY }}
          LANGCHAIN_PROJECT: openwiki
          LANGCHAIN_TRACING_V2: "true"

      - name: Exclude workflow changes
        if: ${{ !cancelled() }}
        run: git checkout -- .github/workflows/openwiki-update.yml

      - name: Remove transient OpenWiki run state
        if: ${{ !cancelled() }}
        run: rm -f -- openwiki/.run.json

      - name: Create OpenWiki update pull request
        id: create-pr
        if: ${{ !cancelled() }}
        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
        with:
          token: ${{ secrets.OPENWIKI_PR_TOKEN }}
          add-paths: |
            openwiki
            AGENTS.md
            CLAUDE.md
          branch: openwiki/update
          commit-message: "docs: update OpenWiki"
          title: "docs: update OpenWiki"
          body: |
            Automated OpenWiki documentation update.

            OpenWiki result: ${{ steps.openwiki.outcome }}

            When the result is `failure`, this PR intentionally preserves only the
            pages completed before the failure. A later successful run can update it.

      - name: Enable auto-merge after a successful update
        if: ${{ steps.openwiki.outcome == 'success' && steps.create-pr.outputs.pull-request-number != '' }}
        run: |
          [[ "$PR_NUMBER" =~ ^[0-9]+$ ]]
          gh pr merge --auto --squash "$PR_NUMBER"
        env:
          GH_TOKEN: ${{ secrets.OPENWIKI_PR_TOKEN }}
          PR_NUMBER: ${{ steps.create-pr.outputs.pull-request-number }}

      - name: Disable auto-merge after a failed update
        if: ${{ steps.openwiki.outcome == 'failure' && steps.create-pr.outputs.pull-request-number != '' }}
        run: |
          [[ "$PR_NUMBER" =~ ^[0-9]+$ ]]
          gh pr merge --disable-auto "$PR_NUMBER"
        env:
          GH_TOKEN: ${{ secrets.OPENWIKI_PR_TOKEN }}
          PR_NUMBER: ${{ steps.create-pr.outputs.pull-request-number }}

      - name: Propagate OpenWiki failure
        if: ${{ steps.openwiki.outcome == 'failure' }}
        run: exit 1