publish.yml

name: Publish to LuaRocks

on:
  push:
    branches: [main]
    paths:
      - 'src/**'
      - 'types/**/*.d.lua'
      - '*.rockspec'
    tags:
      - 'v*'
  workflow_dispatch:

jobs:
  publish:
    name: Publish
    runs-on: ubuntu-latest
    steps:
      - name: Wait for Test workflow to pass
        uses: lewagon/wait-on-check-action@v1
        with:
          ref: ${{ github.sha }}
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          check-regexp: '^Run Tests .*'

      - name: Checkout code
        uses: actions/checkout@v7

      - name: Install Lua
        uses: luarocks/gh-actions-lua@master
        with:
          luaVersion: "5.5"

      - name: Install LuaRocks
        uses: luarocks/gh-actions-luarocks@master

      - name: Resolve Rockspec
        shell: bash
        run: |
          PACKAGE_NAME=$(jq -r '.package' .github/config.json)
          ROCKSPEC="${PACKAGE_NAME}-scm-1.rockspec"
          if [ ! -f "$ROCKSPEC" ]; then
            echo "No rockspec file found: $ROCKSPEC" >&2
            exit 1
          fi
          echo "rockspec=$ROCKSPEC" >> "$GITHUB_ENV"
          echo "package_name=$PACKAGE_NAME" >> "$GITHUB_ENV"

      - name: Build and Upload to LuaRocks
        shell: bash
        env:
          LUAROCKS_API_KEY: ${{ secrets.LUAROCKS_API_KEY }}
        run: |
          set -euo pipefail

          # Detect if this is a tag push
          if [[ "${{ github.ref }}" == refs/tags/* ]]; then
            TAG_NAME="${{ github.ref_name }}"
            VERSION="${TAG_NAME#v}"
            BASE_VERSION="$VERSION"

            # Query LuaRocks once to find the latest revision for this version
            LATEST_REV=$(luarocks search --porcelain "$package_name" --only-server=https://luarocks.org/manifests/bluelua 2>/dev/null |
              awk -v pkg="$package_name" -v ver="${BASE_VERSION}" '
                $1 == pkg && $2 ~ "^"ver"-" {
                  split($2, a, "-")
                  print a[2]
                  exit
                }
              ')
            REVISION=$((LATEST_REV + 1))
            VERSION="${BASE_VERSION}-${REVISION}"

            ROCKSPEC_FILENAME="${package_name}-${VERSION}.rockspec"
            sed -e "s/version = .*/version = \"${VERSION}\"/" \
                -e "s/source = {/source = {\n  tag = \"${TAG_NAME}\",/" \
                "$rockspec" > "$ROCKSPEC_FILENAME"
          else
            # Dev publish: upload the existing SCM rockspec as-is (LuaRocks updates/overwrites it in place)
            ROCKSPEC_FILENAME="$rockspec"
          fi

          echo "Generated/loaded rockspec content:"
          cat "$ROCKSPEC_FILENAME"

          echo "Uploading $ROCKSPEC_FILENAME to LuaRocks..."
          luarocks upload "$ROCKSPEC_FILENAME" --api-key="${LUAROCKS_API_KEY}" --force