version.yml

name: version management

on:
  workflow_dispatch:
    inputs:
      action:
        type: choice
        description: What do you want to do?
        required: true
        options:
          - bump-version          # 1.2.3 -> 1.2.4
          - start-prerelease      # 1.2.3 -> 1.3.0-beta.1
          - bump-prerelease       # beta.5 -> beta.6
          - transition-prerelease # beta.5 -> rc.1
          - finalize              # 1.3.0-rc.2 -> 1.3.0

      level:
        type: choice
        description: Version bump level (required for bump-version / start-prerelease)
        required: false
        options: [patch, minor, major]

      stage:
        type: choice
        description: Prerelease stage (required for start-prerelease / transition-prerelease)
        required: false
        options: [alpha, beta, rc]

permissions:
  contents: write
  pull-requests: write

jobs:
  bump-version:
    runs-on: ubuntu-latest

    steps:
      - name: Validate inputs
        run: |
          ACTION="${{ github.event.inputs.action }}"
          LEVEL="${{ github.event.inputs.level }}"
          STAGE="${{ github.event.inputs.stage }}"

          case "$ACTION" in
            bump-version)
              [ -n "$LEVEL" ] || { echo "level is required"; exit 1; }
              ;;
            start-prerelease)
              [ -n "$LEVEL" ] && [ -n "$STAGE" ] || {
                echo "level and stage are required"
                exit 1
              }
              ;;
            bump-prerelease)
              ;;
            transition-prerelease)
              [ -n "$STAGE" ] || { echo "stage is required"; exit 1; }
              ;;
            finalize)
              ;;
            *)
              echo "Invalid action"
              exit 1
              ;;
          esac

      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      
      - name: Get current version
        id: current_version
        uses: mozilla-ai/cargo-goosectl/actions/current-version@v1
        with:
          force-single-version: true
      
      - name: Compute cargo-goosectl args
        id: goose_args
        run: |
          ACTION="${{ github.event.inputs.action }}"
          LEVEL="${{ github.event.inputs.level }}"
          STAGE="${{ github.event.inputs.stage }}"

          case "$ACTION" in
            bump-version)
              ARGS="bump version $LEVEL"
              ;;
            start-prerelease)
              ARGS="bump version $LEVEL $STAGE"
              ;;
            bump-prerelease)
              ARGS="bump prerelease"
              ;;
            transition-prerelease)
              ARGS="bump prerelease $STAGE"
              ;;
            finalize)
              ARGS="bump release"
              ;;
            *)
              echo "Invalid action"
              exit 1
              ;;
          esac

          echo "args=$ARGS" >> "$GITHUB_OUTPUT"

      - name: Bump version
        uses: mozilla-ai/cargo-goosectl/actions/cargo-goosectl@v1
        with:
          args: ${{ steps.goose_args.outputs.args }}

      - name: Get new version
        id: new_version
        uses: mozilla-ai/cargo-goosectl/actions/current-version@v1
        with:
          force-single-version: true

      - name: Abort if version did not change
        run: |
          if [ "${{ steps.current_version.outputs.version }}" = \
               "${{ steps.new_version.outputs.version }}" ]; then
            echo "Version did not change; aborting"
            exit 1
          fi

      - name: Update Cargo.lock
        run: cargo generate-lockfile

      - name: Generate labels
        id: labels
        run: |
          ACTION="${{ github.event.inputs.action }}"
          LEVEL="${{ github.event.inputs.level }}"
          IS_PRE="${{ steps.new_version.outputs.is_prerelease }}"
          PRE="${{ steps.new_version.outputs.pre }}"

          LABELS="version-bump\nauto-generated\n$ACTION"

          if [ "$IS_PRE" = "true" ]; then
            LABELS="$LABELS\nprerelease\n$PRE"
          else
            [ -n "$LEVEL" ] && LABELS="$LABELS\n$LEVEL"
          fi

          echo "labels<<EOF" >> "$GITHUB_OUTPUT"
          echo -e "$LABELS" >> "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"

      - name: Create Pull Request
        id: create_pr
        uses: peter-evans/create-pull-request@v5
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "version: bump version 🚀 ${{ steps.new_version.outputs.version }}"
          title: "version: Version Bump 🚀 ${{ steps.new_version.outputs.version }}"
          body: |
            Version bumped from ${{ steps.current_version.outputs.version }}
            to ${{ steps.new_version.outputs.version }}.

            ### 🔄 Changes
            - 📝 Updated version in Cargo.toml
            - 🔒 Updated Cargo.lock

            ✨ This PR was automatically generated by the Version Management workflow ✨

            ![version bump](https://media0.giphy.com/media/v1.Y2lkPTc5MGI3NjExNjJmOXBxbGh2Z3BiYXM1NnJhMHdtbmNoaTFxN2xjOGZjZnd1ZGhuMiZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/3oEjI53nBYOOEQgDcY/giphy.gif)
          branch: version/bump-${{ github.run_id }}
          base: main
          delete-branch: true
          add-paths: |
            Cargo.lock
            **/Cargo.toml
          labels: ${{ steps.labels.outputs.labels }}