name: Release Documentation

permissions:
  contents: read

on:
  workflow_dispatch:
    inputs:
      release-version:
        description: 'Release Version'
        required: true
        type: string
      upload:
        description: 'Upload documentation'
        required: false
        type: boolean

  workflow_call:
    inputs:
      release-version:
        description: 'Release Version'
        required: true
        type: string
      upload:
        description: 'Upload documentation'
        required: false
        type: boolean
    secrets:
      LLVMBOT_WWW_RELEASES_PUSH:
        description: "Secret used to push changes to llvmbot www-releases fork."
        required: false
      WWW_RELEASES_TOKEN:
        description: "Secret used to create a PR with the documentation changes."
        required: false

jobs:
  release-documentation:
    name: Build and Upload Release Documentation
    runs-on: ubuntu-24.04
    env:
      upload: ${{ inputs.upload && !contains(inputs.release-version, 'rc') }}
    steps:
      - name: Checkout LLVM
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1

      - name: Setup Python env
        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6.1.0
        with:
          cache: 'pip'
          cache-dependency-path: './llvm/docs/requirements.txt'

      - name: Install Dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
              graphviz \
              python3-github \
              ninja-build \
              texlive-font-utils
          pip3 install --user -r ./llvm/docs/requirements.txt

      - name: Build Documentation
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: |
          ./llvm/utils/release/build-docs.sh -release "${{ inputs.release-version }}" -no-doxygen

      - name: Create Release Notes Artifact
        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # 6.0.0
        with:
          name: release-notes
          path: docs-build/html-export/

      - name: Clone www-releases
        if: env.upload
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        with:
          repository: ${{ github.repository_owner }}/www-releases
          ref: main
          fetch-depth: 0
          path: www-releases
          persist-credentials: false

      - name: Upload Release Notes
        if: env.upload
        env:
          PUSH_TOKEN: ${{ secrets.LLVMBOT_WWW_RELEASES_PUSH }}
          GH_TOKEN: ${{ secrets.WWW_RELEASES_TOKEN }}
        run: |
          mkdir -p www-releases/${{ inputs.release-version }}
          mv ./docs-build/html-export/* www-releases/${{ inputs.release-version }}
          cd www-releases
          git checkout -b ${{ inputs.release-version }}
          git add ${{ inputs.release-version }}
          git config user.email "llvmbot@llvm.org"
          git config user.name "llvmbot"
          git commit -a -m "Add ${{ inputs.release-version }} documentation"
          git push --force  "https://$PUSH_TOKEN@github.com/llvmbot/www-releases.git" HEAD:refs/heads/${{ inputs.release-version }}
          gh pr create -f -B main -H llvmbot:${{ inputs.release-version }}