name: CD
concurrency: cd

on:
  push:
    tags:
      - v*

permissions: {}

jobs:
  test:
    uses: ./.github/workflows/_test.yml

  build:
    name: Build
    runs-on: ubuntu-latest
    needs: test
    steps:
      - name: Checkout release tag
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
          ref: ${{ github.event.workflow_run.head_branch }}

      - name: Set up Python
        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: '3.x'

      - name: Install build dependency
        run: python3 -m pip install --constraint requirements/build.txt build

      - name: Build binary wheel, source tarball and changelog
        run: |
          python3 -m build --sdist --wheel --outdir dist/ .
          awk "/## $GITHUB_REF_NAME/{flag=1; next} /## v/{flag=0} flag" docs/CHANGELOG.md > changelog

      - name: Store build artifacts
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: build-artifacts
          path: |
            dist
            changelog

  candidate_release:
    name: Release candidate on Github for review
    runs-on: ubuntu-latest
    needs: build
    permissions:
      contents: write # to modify GitHub releases
    outputs:
      release_id: ${{ steps.gh-release.outputs.result }}
    steps:
      - name: Fetch build artifacts
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: build-artifacts

      - id: gh-release
        name: Publish GitHub release draft
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          script: |
            fs = require('fs')
            res = await github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              name: process.env.REF_NAME + '-rc',
              tag_name: process.env.REF,
              body: fs.readFileSync('changelog', 'utf8'),
            });

            fs.readdirSync('dist/').forEach(file => {
              github.rest.repos.uploadReleaseAsset({
                owner: context.repo.owner,
                repo: context.repo.repo,
                release_id: res.data.id,
                name: file,
                data: fs.readFileSync('dist/' + file),
              });
            });
            return res.data.id
        env:
          REF_NAME: ${{ github.ref_name }}
          REF: ${{ github.ref }}

  release:
    name: Release
    runs-on: ubuntu-latest
    needs: candidate_release
    environment: release
    permissions:
      contents: write # to modify GitHub releases
      id-token: write # to authenticate as Trusted Publisher to pypi.org
    steps:
      - name: Fetch build artifacts
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: build-artifacts

      - name: Publish binary wheel and source tarball on PyPI
        # Only attempt pypi upload in upstream repository
        if: github.repository == 'theupdateframework/python-tuf'
        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0

      - name: Finalize GitHub release
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          script: |
            github.rest.repos.updateRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              release_id: process.env.RELEASE_ID,
              name: process.env.REF_NAME,
            })
        
        env:
          REF_NAME: ${{ github.ref_name }}
          RELEASE_ID: ${{ needs.candidate_release.outputs.release_id }}