name: Build

on:
  push:
    branches:
      - "**"
    tags:
      - "v*"
  pull_request:
  workflow_dispatch:
    inputs:
      publish_version:
        description: Version to publish to the Gitea package registry
        required: false
        type: string

permissions:
  contents: read
  packages: write

jobs:
  build:
    name: Test and build
    runs-on: ubuntu-latest
    steps:
      - name: Check out source
        uses: actions/checkout@v4

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

      - name: Test
        run: go test -race ./...

      - name: Vet
        run: go vet ./...

      - name: Build release archives
        shell: bash
        env:
          BUILD_REF: ${{ github.ref }}
          BUILD_REF_NAME: ${{ github.ref_name }}
          BUILD_SHA: ${{ github.sha }}
          PUBLISH_VERSION: ${{ inputs.publish_version }}
        run: |
          set -euo pipefail

          package_version="snapshot-${BUILD_SHA:0:8}"
          version_flags=""
          if [[ "$BUILD_REF" == refs/tags/v* ]]; then
            package_version="$BUILD_REF_NAME"
          elif [[ -n "$PUBLISH_VERSION" ]]; then
            package_version="$PUBLISH_VERSION"
          fi
          if [[ "$package_version" != snapshot-* ]]; then
            if [[ ! "$package_version" =~ ^v[0-9]+\.[0-9]+\.[0-9]+([.-][0-9A-Za-z.-]+)?$ ]]; then
              echo "Invalid release version: $package_version" >&2
              exit 1
            fi
            version_flags="-X main.version=$package_version"
          fi

          mkdir -p dist
          for target in \
            linux/amd64 linux/arm64 \
            darwin/amd64 darwin/arm64 \
            windows/amd64 windows/arm64
          do
            target_os="${target%/*}"
            target_arch="${target#*/}"
            archive="bdrclone-${package_version}-${target_os}-${target_arch}"
            executable="bdrclone"
            if [[ "$target_os" == "windows" ]]; then
              executable="bdrclone.exe"
            fi

            package_dir="dist/$archive"
            mkdir -p "$package_dir"
            CGO_ENABLED=0 GOOS="$target_os" GOARCH="$target_arch" \
              go build -trimpath -ldflags "-s -w $version_flags" \
              -o "$package_dir/$executable" ./cmd/bdrclone
            cp README.md "$package_dir/"
            tar -C dist -czf "dist/$archive.tar.gz" "$archive"
            rm -rf "$package_dir"
          done

          cd dist
          sha256sum ./*.tar.gz > SHA256SUMS

      - name: Upload build artifacts
        uses: actions/upload-artifact@v3
        with:
          name: bdrclone-build-${{ github.run_number }}
          path: |
            dist/*.tar.gz
            dist/SHA256SUMS
          if-no-files-found: error
          retention-days: 30

      - name: Publish Gitea package
        if: startsWith(github.ref, 'refs/tags/v') || inputs.publish_version != ''
        shell: bash
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          GITEA_SERVER_URL: ${{ github.server_url }}
          GITEA_OWNER: ${{ github.repository_owner }}
          GITEA_REPOSITORY: ${{ github.repository }}
          BUILD_REF_NAME: ${{ github.ref_name }}
          PUBLISH_VERSION: ${{ inputs.publish_version }}
        run: |
          set -euo pipefail

          package_version="${PUBLISH_VERSION:-$BUILD_REF_NAME}"
          repository_name="${GITEA_REPOSITORY#*/}"
          package_url="$GITEA_SERVER_URL/api/packages/$GITEA_OWNER/generic/bdrclone/$package_version"

          for package_file in dist/*.tar.gz dist/SHA256SUMS; do
            curl --fail-with-body --silent --show-error \
              --request PUT \
              --header "Authorization: token $GITEA_TOKEN" \
              --upload-file "$package_file" \
              "$package_url/$(basename "$package_file")"
          done

          curl --fail-with-body --silent --show-error \
            --request POST \
            --header "Authorization: token $GITEA_TOKEN" \
            "$GITEA_SERVER_URL/api/v1/packages/$GITEA_OWNER/generic/bdrclone/-/link/$repository_name"