name: Release

# A pushed v* tag makes this workflow build every desktop target, run the
# end-to-end suites and attach the binaries to the matching GitHub release.
# workflow_dispatch lets an existing tag be rebuilt without moving it.

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag to build and publish; leave empty to use the latest tag"
        required: false
        default: ""
        type: string

permissions:
  contents: write

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

jobs:
  test:
    name: End-to-end tests
    # Gitea also discovers .github/workflows; this keeps the run on GitHub only.
    if: github.server_url == 'https://github.com'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: golink suite
        run: ./smoketest/run.sh

      - name: goscp suite
        run: ./smoketest/run-goscp.sh

  release:
    name: Build and publish
    needs: test
    if: github.server_url == 'https://github.com'
    runs-on: ubuntu-latest
    steps:
      # Full history and tags: a manual run resolves the tag with git describe.
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: Resolve tag
        id: tag
        env:
          INPUT_TAG: ${{ inputs.tag }}
          REF_NAME: ${{ github.ref_name }}
          EVENT_NAME: ${{ github.event_name }}
        run: |
          set -euo pipefail
          tag="${INPUT_TAG:-}"
          if [ -z "$tag" ]; then
            if [ "$EVENT_NAME" = "push" ]; then
              tag="$REF_NAME"
            else
              tag="$(git describe --tags --abbrev=0)"
            fi
          fi
          [ -n "$tag" ] || { echo "no tag found, pass one explicitly" >&2; exit 1; }
          echo "value=$tag" >> "$GITHUB_OUTPUT"
          echo "building $tag"

      - name: Build every target
        env:
          TAG: ${{ steps.tag.outputs.value }}
        run: |
          set -euo pipefail
          VERSION="${TAG#v}" ./build.sh

      - name: Verify the binaries
        env:
          TAG: ${{ steps.tag.outputs.value }}
        run: |
          set -euo pipefail
          want="${TAG#v}"
          for program in golink goscp; do
            got="$(./dist/$program -version | awk '{print $2}')"
            echo "$program: $got"
            [ "$got" = "$want" ] || { echo "version mismatch: want $want, got $got" >&2; exit 1; }
          done
          # SHA256SUMS lists bare file names, so verify from inside dist/.
          ( cd dist && sha256sum -c SHA256SUMS )

      - name: Publish to the release
        env:
          GH_TOKEN: ${{ github.token }}
          TAG: ${{ steps.tag.outputs.value }}
        run: |
          set -euo pipefail
          if gh release view "$TAG" >/dev/null 2>&1; then
            echo "release $TAG already exists, replacing assets"
          else
            gh release create "$TAG" \
              --title "sshtools $TAG" \
              --generate-notes \
              --verify-tag
          fi
          gh release upload "$TAG" dist/golink_* dist/goscp_* dist/SHA256SUMS --clobber
          gh release view "$TAG"