release.yml

name: Release

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Release version, for example 0.1.0 or v0.1.0"
        required: true
  push:
    branches:
      - "main"
    paths:
      - "rockspec/**"

permissions:
  contents: write

jobs:
  release:
    name: Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Install Lua
        uses: leafo/gh-actions-lua@v10
        with:
          luaVersion: "5.1.5"

      - name: Install LuaRocks
        uses: leafo/gh-actions-luarocks@v4
        with:
          luarocksVersion: "3.11.1"

      - name: Install upload dependency
        run: luarocks install dkjson

      - name: Extract release name
        id: release_env
        shell: bash
        env:
          HEAD_COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
          RELEASE_VERSION: ${{ inputs.version }}
        run: |
          semver_re="^v?([0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z.-]+)?)$"
          if [ -n "$RELEASE_VERSION" ]; then
              if [[ $RELEASE_VERSION =~ $semver_re ]]; then
                  version="${BASH_REMATCH[1]}"
              else
                  echo "version input is not correct (expected: X.Y.Z[-prerelease])"
                  exit 1
              fi
          else
              title="${HEAD_COMMIT_MESSAGE%%$'\n'*}"
              if [[ $title =~ ^(.*)\ \(#[0-9]+\)$ ]]; then
                  title="${BASH_REMATCH[1]}"
              fi
              title_re="^feat: release v?([0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z.-]+)?)$"
              if [[ $title =~ $title_re ]]; then
                  version="${BASH_REMATCH[1]}"
              else
                  echo "commit format is not correct (expected: feat: release vX.Y.Z[-prerelease])"
                  exit 1
              fi
          fi

          echo "version=v${version}" >> $GITHUB_OUTPUT
          echo "version_without_v=${version}" >> $GITHUB_OUTPUT
          if [[ $version == *-* ]]; then
              echo "is_prerelease=true" >> $GITHUB_OUTPUT
          else
              echo "is_prerelease=false" >> $GITHUB_OUTPUT
          fi

      - name: Verify rockspec exists
        id: verify_rockspec
        shell: bash
        env:
          VERSION_WITHOUT_V: ${{ steps.release_env.outputs.version_without_v }}
        run: |
          rockspec_file="$(python3 - <<'PY'
          import os
          import re
          from pathlib import Path

          version = os.environ["VERSION_WITHOUT_V"]
          pattern = re.compile(r"^lua-qjson-" + re.escape(version) + r"-(\d+)\.rockspec$")
          matches = []
          for path in Path("rockspec").glob("lua-qjson-" + version + "-*.rockspec"):
              match = pattern.match(path.name)
              if match:
                  matches.append((int(match.group(1)), str(path)))
          if not matches:
              raise SystemExit("rockspec file not found for version " + version)
          print(max(matches)[1])
          PY
          )"
          echo "rockspec_file=${rockspec_file}" >> $GITHUB_OUTPUT

      - name: Validate LuaRocks token
        shell: bash
        env:
          LUAROCKS_TOKEN: ${{ secrets.LUAROCKS_TOKEN }}
        run: |
          if [ -z "$LUAROCKS_TOKEN" ]; then
              echo "LUAROCKS_TOKEN secret is not configured"
              exit 1
          fi

      - name: Create Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.release_env.outputs.version }}
          name: ${{ steps.release_env.outputs.version }}
          draft: false
          prerelease: ${{ steps.release_env.outputs.is_prerelease }}

      - name: Upload to LuaRocks
        env:
          LUAROCKS_TOKEN: ${{ secrets.LUAROCKS_TOKEN }}
          ROCKSPEC_FILE: ${{ steps.verify_rockspec.outputs.rockspec_file }}
        shell: bash
        run: |
          mkdir -p "$HOME/.luarocks"
          chmod 700 "$HOME/.luarocks"
          lua -e 'local token = os.getenv("LUAROCKS_TOKEN"); assert(token and token ~= "", "missing LUAROCKS_TOKEN"); local f = assert(io.open(os.getenv("HOME") .. "/.luarocks/upload_config.lua", "w")); f:write(("key = %q\n"):format(token)); f:write("server = \"https://luarocks.org\"\nversion = \"1.0\"\n"); f:close()'
          chmod 600 "$HOME/.luarocks/upload_config.lua"
          luarocks upload "$ROCKSPEC_FILE"