name: Create release

on:
  workflow_dispatch:
    inputs:
      bump:
        description: "Version bump type"
        required: true
        type: choice
        options:
          - patch
          - minor
          - major

permissions:
  contents: write

jobs:
  release:
    name: Create tag and release
    runs-on: ubuntu-latest
    steps:
      - uses: actions/create-github-app-token@v1
        id: app-token
        with:
          app-id: ${{ vars.RIOTBYTE_BOT_APP_ID }}
          private-key: ${{ secrets.RIOTBYTE_BOT_PRIVATE_KEY }}

      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Determine next version
        id: version
        run: |
          LATEST=$(git tag --list --sort=-v:refname '[0-9]*.[0-9]*.[0-9]*' --merged HEAD | head -n1)

          if [ -z "$LATEST" ]; then
            LATEST="0.0.0"
          fi

          IFS='.' read -r MAJOR MINOR PATCH <<< "$LATEST"

          case "${{ inputs.bump }}" in
            major) MAJOR=$((MAJOR + 1)); MINOR=0; PATCH=0 ;;
            minor) MINOR=$((MINOR + 1)); PATCH=0 ;;
            patch) PATCH=$((PATCH + 1)) ;;
          esac

          NEXT="${MAJOR}.${MINOR}.${PATCH}"
          echo "previous=${LATEST}" >> "$GITHUB_OUTPUT"
          echo "next=${NEXT}" >> "$GITHUB_OUTPUT"
          echo "Bumping ${LATEST} → ${NEXT} (${{ inputs.bump }})"

      - name: Create tag and GitHub release
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}
        run: |
          gh release create "${{ steps.version.outputs.next }}" \
            --target "${{ github.sha }}" \
            --title "${{ steps.version.outputs.next }}" \
            --generate-notes \
            --notes-start-tag "${{ steps.version.outputs.previous }}"