release-prep.yml

name: release-prep

on:
  workflow_dispatch:
    inputs:
      crate:
        description: "Target crate to bump (exclude fuzz)"
        required: true
        type: choice
        options:
          - all
          - portable-network-archive
          - pna
          - libpna
        default: portable-network-archive
      level:
        description: "Version level"
        required: true
        type: choice
        options: [major, minor, patch]
        default: patch
      dependent_version:
        description: "Update dependent versions?"
        required: true
        type: choice
        options:
          - fix       # Upgrade only when previous requirement no longer matches
          - upgrade   # Always upgrade dependents
        default: fix

jobs:
  prepare:
    name: Prepare release
    runs-on: ubuntu-latest
    permissions:
      contents: write # push version bump commit
      pull-requests: write # create draft PR
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Install Rust toolchain
        uses: actions-rust-lang/setup-rust-toolchain@46268bd060767258de96ed93c1251119784f2ab6 # v1.16.1
        with:
          toolchain: stable
          cache-save-if: ${{ github.ref_name == github.event.repository.default_branch }}

      - name: Install cargo-release
        run: cargo install -f --git https://github.com/ChanTsune/cargo-release --branch workspace-enable-template-render-when-single-crate --locked cargo-release

      - name: Compute next version and build temp release config
        id: prep
        shell: bash
        env:
          INPUT_CRATE: ${{ inputs.crate }}
        run: |
          set -euo pipefail
          CONFIG=/tmp/release-config.toml

          if [ "$INPUT_CRATE" != "all" ]; then
            COMMIT_MSG=':bookmark: Bump {{crate_name}} version to {{version}}'
          else
            COMMIT_MSG=':bookmark: Bump version to {{version}}'
          fi

          printf 'pre-release-commit-message = "%s"\n' "$COMMIT_MSG" > "$CONFIG"
          echo "config=$CONFIG" >> "$GITHUB_OUTPUT"

      - name: Run cargo release (no tag/push)
        env:
          CARGO_TERM_COLOR: always
          INPUT_CRATE: ${{ inputs.crate }}
          INPUT_LEVEL: ${{ inputs.level }}
          INPUT_DEPENDENT_VERSION: ${{ inputs.dependent_version }}
          RELEASE_CONFIG: ${{ steps.prep.outputs.config }}
        run: |
          set -euo pipefail
          git config --global user.name "github-actions[bot]"
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
          if [ "$INPUT_CRATE" = "all" ]; then
            PKG_ARGS=(--workspace)
          else
            PKG_ARGS=(-p "$INPUT_CRATE")
          fi

          cargo release \
            "$INPUT_LEVEL" \
            "${PKG_ARGS[@]}" \
            --no-publish \
            --no-push \
            --no-tag \
            --execute \
            --no-confirm \
            --exclude portable-network-archive-fuzz \
            --exclude xtask \
            --dependent-version "$INPUT_DEPENDENT_VERSION" \
            --config "$RELEASE_CONFIG"

      - name: Get new version
        id: version
        shell: bash
        env:
          INPUT_CRATE: ${{ inputs.crate }}
        run: |
          set -euo pipefail
          if [ "$INPUT_CRATE" = "all" ]; then
            TARGET_CRATE="portable-network-archive"
          else
            TARGET_CRATE="$INPUT_CRATE"
          fi

          NEW_VERSION=$(cargo metadata --format-version 1 --no-deps | jq -r --arg name "$TARGET_CRATE" '.packages[] | select(.name == $name) | .version')
          echo "value=$NEW_VERSION" >> "$GITHUB_OUTPUT"

      - name: Set PR branch name
        id: branch
        env:
          INPUT_CRATE: ${{ inputs.crate }}
          INPUT_LEVEL: ${{ inputs.level }}
          NEW_VERSION: ${{ steps.version.outputs.value }}
        run: |
          BRANCH="release/${INPUT_CRATE}/${INPUT_LEVEL}-${NEW_VERSION}"
          echo "name=$BRANCH" >> "$GITHUB_OUTPUT"

      - name: Create draft PR
        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ steps.branch.outputs.name }}
          title: "chore: prepare release ${{ inputs.crate }} ${{ steps.version.outputs.value }}"
          body: |
            Draft: release prep for `${{ inputs.crate }}` (${{ inputs.level }}).
            - Version set to ${{ steps.version.outputs.value }}
            - Dependent versions: ${{ inputs.dependent_version }}
            - No tags or publishes; cargo-release performed pre-replacements.
          draft: true
          commit-message: "chore: prepare release ${{ inputs.crate }} ${{ steps.version.outputs.value }}"