name: custom release

permissions:
  contents: write

on:
  push:
    branches:
      - main
    paths:
      - ".github/workflows/custom-release.yml"
      - "patches/**"
      - "scripts/update-custom-release.sh"
      - "scripts/sync-upstream.sh"
  workflow_dispatch:
    inputs:
      upstream_tag:
        description: "Optional upstream Syncthing tag, for example v2.1.3"
        required: false
      suffix:
        description: "Optional custom release suffix, for example stignore.7"
        required: false
  schedule:
    - cron: "17 04 * * *"

jobs:
  build-custom-release:
    runs-on: macos-14
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: false

      - name: Configure Git author
        run: |
          git config user.name "GitHub Actions"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Mirror upstream and rebuild patched main
        run: ./scripts/sync-upstream.sh
        env:
          SYNC_REMOTE: origin

      - name: Build patched Syncthing release
        run: |
          case "$(uname -m)" in
            arm64) darwin_arch=arm64 ;;
            x86_64) darwin_arch=amd64 ;;
            *) echo "Unsupported macOS runner architecture: $(uname -m)" >&2; exit 1 ;;
          esac
          export CUSTOM_RELEASE_BUILDS="darwin/$darwin_arch/zip/1 linux/amd64/tar/0 linux/arm64/tar/0"
          ./scripts/update-custom-release.sh
        env:
          CUSTOM_RELEASE_UPSTREAM_TAG: ${{ github.event.inputs.upstream_tag }}
          CUSTOM_RELEASE_SUFFIX: ${{ github.event.inputs.suffix }}
          CUSTOM_RELEASE_PUSH: "1"
          CUSTOM_RELEASE_PUSH_BRANCH: "0"
          CUSTOM_RELEASE_REMOTE: origin
          CUSTOM_RELEASE_SIGN_DARWIN: "0"
          CUSTOM_RELEASE_CREATE_GITEA_RELEASE: "0"
          GH_TOKEN: ${{ github.token }}

      - name: Publish GitHub release
        run: |
          tag="${CUSTOM_RELEASE_UPSTREAM_TAG:-$(git ls-remote --refs --tags --sort='version:refname' https://github.com/syncthing/syncthing.git 'v[0-9]*' | awk '{ tag = $2; sub("refs/tags/", "", tag); if (tag ~ /^v[0-9]+\.[0-9]+\.[0-9]+$/) latest = tag } END { print latest }')}-$CUSTOM_RELEASE_SUFFIX"
          if gh release view "$tag" >/dev/null 2>&1; then
            echo "GitHub release $tag already exists; nothing to do."
            exit 0
          fi
          assets=()
          for asset in dist/*; do
            [ -f "$asset" ] || continue
            [ "$(basename "$asset")" = release-notes.md ] && continue
            assets+=("$asset")
          done
          gh release create "$tag" "${assets[@]}" --title "$tag" --notes-file dist/release-notes.md --verify-tag
        env:
          CUSTOM_RELEASE_UPSTREAM_TAG: ${{ github.event.inputs.upstream_tag }}
          CUSTOM_RELEASE_SUFFIX: ${{ github.event.inputs.suffix || 'stignore.7' }}
          GH_TOKEN: ${{ github.token }}