name: make-release

on:
  workflow_dispatch:
    inputs:
      target_branch:
        description: >-
          JSON array of branches to target. The first branch in the array will
          be marked as the latest release.
        required: false
        type: string
        default: '["main","release/0.15","release/0.12"]'

jobs:
  bump-version:
    strategy:
      matrix:
        target_branch: ${{ fromJSON(inputs.target_branch) }}
    runs-on: ubuntu-latest
    env:
      CARGO_EDIT_VERSION: 0.12.2
    steps:
      - uses: actions/checkout@v4
        with:
          ref: '${{ matrix.target_branch }}'
          token: '${{ secrets.DIVVIUP_GITHUB_AUTOMATION_RELEASE_PAT }}'

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Cache cargo edit
        uses: actions/cache@v4
        with:
          path: ${{ runner.tool_cache }}/cargo-edit
          key: cargo-edit-${{ env.CARGO_EDIT_VERSION }}
      - name: Add the tool cache directory to the search path
        run: echo "${{ runner.tool_cache }}/cargo-edit/bin/" >>$GITHUB_PATH
      - name: Ensure cargo-edit is installed
        run: |
          cargo install \
            --root ${{ runner.tool_cache }}/cargo-edit \
            --version ${{ env.CARGO_EDIT_VERSION }} \
            cargo-edit
      
      - run: cargo set-version --package prio --bump patch
      - run: git diff
      - name: Push changes
        env:
          ACTOR: '${{ github.actor }}'
        run: |
          git config user.email "divviup-github-automation@divviup.org"
          git config user.name "divviup-github-automation"
          git commit -am "Bump libprio-rs patch version, triggered by @$ACTOR"
          git push

  # This job is kept separate from the previous one to enable retrying it without
  # bumping the version number again.
  make-release:
    strategy:
      matrix:
        target_branch: ${{ fromJSON(inputs.target_branch) }}
    runs-on: ubuntu-latest
    needs: [bump-version]
    steps:
      - uses: actions/checkout@v4
        with:
          ref: '${{ matrix.target_branch }}'
          token: '${{ secrets.DIVVIUP_GITHUB_AUTOMATION_RELEASE_PAT }}'

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable

      - name: Create release
        env:
          GH_TOKEN: '${{ secrets.DIVVIUP_GITHUB_AUTOMATION_RELEASE_PAT }}'
          TARGET_BRANCH: '${{ matrix.target_branch }}'
          FIRST_BRANCH: '${{ fromJSON(inputs.target_branch)[0] }}'
        run: |
          # Determine the workspace version.
          VERSION=$(cargo metadata --no-deps | jq -er '.packages[0].version')

          LATEST=
          if [ "$TARGET_BRANCH" == "$FIRST_BRANCH" ]; then
              LATEST="--latest=true"
          else
              LATEST="--latest=false"
          fi

          gh release create "$VERSION" \
              --generate-notes \
              --target "$TARGET_BRANCH" \
              $LATEST