release.yml

name: Release and publish

on:
    workflow_dispatch:
    pull_request_target:
        types:
            - closed

permissions:
    contents: write
    pull-requests: write

jobs:
    prepare:
        if: ${{ github.event_name == 'workflow_dispatch' }}
        runs-on: ubuntu-latest
        env:
            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

        outputs:
            version: ${{ steps.version-label.outputs.version }}

        steps:
            - uses: actions/checkout@v4
              with:
                  submodules: true

            - name: Configure Git
              run: |
                  git config --local user.email "actions@github.com"
                  git config --local user.name "Actions Auto Build"

            - name: Get current version
              id: version-label
              run: |
                  VERSION=$(grep version Cargo.toml | head -n 1 | cut -d'"' -f2)
                  echo "version=${VERSION}" >> $GITHUB_OUTPUT

            - name: Get previous version
              id: previous-version-label
              run: |
                  PREVIOUS_VERSION=$(gh api "/repos/${{ github.repository }}/tags?per_page=1" | jq -r '.[] | .name?')
                  echo "previous_version=${PREVIOUS_VERSION}" >> $GITHUB_OUTPUT

            - name: Generate Release Notes
              id: generate-release-notes
              run: |
                  generate() {
                    gh api \
                    --method POST \
                    -H "Accept: application/vnd.github+json" \
                    -H "X-GitHub-Api-Version: 2022-11-28" \
                    /repos/${{ github.repository }}/releases/generate-notes \
                    -f tag_name='v${{ steps.version-label.outputs.version }}' \
                    -f previous_tag='v${{ steps.previous-version-label.outputs.previous_version }}' \
                    | jq -r ".body"
                  }
                  echo "changelog<<EOF"$'\n'"$(generate)"$'\n'EOF >> $GITHUB_OUTPUT

            - name: Update changelog.txt
              run: |
                  echo "# [v${{ steps.version-label.outputs.version }}] - `date +%d-%m-%Y`" >> changelog.txt.tmp
                  echo "${{steps.generate-release-notes.outputs.changelog}}" >> changelog.txt.tmp
                  echo '-n' >> changelog.txt
                  cat changelog.txt >> changelog.txt.tmp
                  mv changelog.txt.tmp changelog.txt

            - name: Update README
              run: |
                  cargo run --example update-readme

            - name: Commit Changelog and README
              run: git add -f changelog.txt README.md

            - name: Create Pull Request
              id: cpr
              uses: peter-evans/create-pull-request@v6
              with:
                  commit-message: "[skip test] update changelog"
                  title: "[skip test] Release v${{ steps.version-label.outputs.version }}"
                  body: >
                      This is an automated PR to build the latest changelog. Upon merging,
                      a new release will be created and published to crates.io.<br/>
                      Due to security considerations, PRs created by GitHub Actions cannot
                      be merged automatically. Please review the changes and merge the PR.<br/>
                      If you require the test suites to run, you can close the PR and reopen it to trigger
                      those workflows.
                  delete-branch: true
                  labels: release
                  branch: "release/v${{ steps.version-label.outputs.version }}"

            - name: Enable Pull Request Automerge
              uses: peter-evans/enable-pull-request-automerge@v3
              with:
                  token: ${{ secrets.GITHUB_TOKEN }}
                  pull-request-number: ${{ steps.cpr.outputs.pull-request-number }}

    release:
        if: ${{ (github.event.pull_request.merged == true) && (contains(github.event.pull_request.labels.*.name, 'release')) }}
        runs-on: ubuntu-latest
        env:
            CRATES_IO_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}
            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

        steps:
            - uses: actions/checkout@v4
              with:
                  submodules: recursive

            - name: Configure Git
              run: |
                  git config --local user.email "actions@github.com"
                  git config --local user.name "Actions Auto Build"

            - name: Get current version
              id: version-label
              run: |
                  VERSION=$(grep version Cargo.toml | head -n 1 | cut -d'"' -f2)
                  echo "version=${VERSION}" >> $GITHUB_OUTPUT

            - name: Create tag
              run: |
                  git tag -a v${{ steps.version-label.outputs.version }} -m "Release v${{ steps.version-label.outputs.version }}"
                  git push origin --tags

            - name: Login to Crates.io
              run: cargo login ${CRATES_IO_TOKEN}

            - name: Publish GitHub release
              run: |
                  gh release create v${{ steps.version-label.outputs.version }} --generate-notes

            - name: Publish crate
              run: cargo publish