release.yml

name: Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  windows_release:
    name: Windows Release (NSIS)
    runs-on: windows-latest

    steps:
      - name: Checkout (full history)
        uses: actions/checkout@v4
        with:
          submodules: recursive
          fetch-depth: 0

      - name: Ensure tag commit is on develop
        shell: bash
        run: |
          set -euo pipefail
          git fetch origin develop:refs/remotes/origin/develop

          TAG_SHA="$(git rev-list -n 1 "$GITHUB_REF")"
          echo "Tag ref: $GITHUB_REF"
          echo "Tag SHA: $TAG_SHA"

          if git merge-base --is-ancestor "$TAG_SHA" "origin/develop"; then
            echo "OK: Tag commit is reachable from origin/develop"
          else
            echo "::error::Tag commit is NOT on develop. Refusing to release."
            exit 1
          fi

      - name: Decide prerelease flag
        shell: bash
        # Pattern must match vMAJOR.MINOR.PATCH-beta.N; keep in sync with the
        # regex used in CMakeLists.txt for git-tag-based version extraction.
        run: |
          set -euo pipefail
          TAG="${GITHUB_REF_NAME}"
          if [[ "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+-beta\.[0-9]+$ ]]; then
            IS_PRERELEASE=true
          else
            IS_PRERELEASE=false
          fi
          echo "PRERELEASE=${IS_PRERELEASE}" >> "$GITHUB_ENV"
          echo "Tag: ${TAG}, Prerelease: ${IS_PRERELEASE}"

      - name: Install NSIS
        run: choco install nsis -y

      - name: Configure (CMake)
        run: cmake -S . -B build -DBUILD_EXAMPLES=OFF -DBUILD_TESTING=OFF -Wno-dev

      - name: Build + Package (CPack/NSIS)
        run: cmake --build build --config Release --target package

      - name: Find installer
        # CPack places the generated installer under this fixed directory when
        # targeting the NSIS generator on Windows (win64).  The same path is
        # used in build.yml's upload-artifact step.
        shell: pwsh
        run: |
          $installer = Get-ChildItem -Path "build/_CPack_Packages/win64/NSIS" -Filter *.exe -Recurse | Select-Object -First 1
          if (-not $installer) { throw "Installer .exe not found" }
          "INSTALLER_PATH=$($installer.FullName)" | Out-File -FilePath $env:GITHUB_ENV -Append
          Write-Host "Found installer: $($installer.FullName)"

      - name: Create GitHub Release and upload NSIS installer
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          generate_release_notes: true
          prerelease: ${{ env.PRERELEASE }}
          files: ${{ env.INSTALLER_PATH }}