# CI on the self-hosted Gitea, ported from .gitlab-ci.yml during the move off
# GitLab (2026-09-22). Gitea reads .gitea/workflows and ignores .github/ once
# this directory exists; .github/workflows stays as it was for GitHub.
#
# This one mattered more than most. ghcr.io/coffey-labs/ihasvpn went dark with
# the account while the deployment was still pulling from it, and the only
# surviving copy was the image already on the host -- amd64 only, because that
# is the platform it runs. The multi-arch tag is rebuilt here.
#
# Every job runs in an image pinned by digest (tag in the trailing comment),
# and the only action used is coffey-labs/actions/checkout pinned by SHA. The
# instance resolves short `uses:` against itself, never GitHub, so nothing
# unreviewed can be pulled in.
#
# Jobs run on the runner's `ci-net` network and clone from Gitea's internal
# address, never through the Cloudflare-proxied public name. Images go to the
# registry's own DNS-only name (vars.REGISTRY, an org variable).
name: ci

on:
  push:
    branches: [main]
    tags: ['**']
  pull_request:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  # The Go binary embeds the built web assets (internal/server/static/dist,
  # `//go:embed all:dist`), so the frontend build comes first. Its output is
  # not handed to the Go job: there is no artifact store here, and the Go
  # checks do not need it -- the committed dist/.gitkeep is enough for the
  # embed to compile. (The GitLab port passed web/dist as an artifact, but the
  # build writes to internal/server/static/dist, so its Go job compiled
  # against the placeholder too.) The image build does its own frontend build
  # in the Dockerfile.
  web:
    runs-on: light
    container:
      image: node:26-bookworm-slim@sha256:582460f614631b59b824ac6020533b9bf339c7fdf3a6d7db31abb6b4065f0212 # 26-bookworm-slim
    env:
      NPM_CONFIG_CACHE: ${{ github.workspace }}/.npm
    steps:
      - uses: coffey-labs/actions/checkout@fab0c4d45e0162963965f1555df27b7bed5e20ec
      - working-directory: web
        run: |
          npm ci --ignore-scripts --no-audit --no-fund
          npm run build

  go:
    needs: [web]
    runs-on: light
    container:
      image: golang:1.27-bookworm@sha256:69a7b9788769bec032d238959b61854e9ae87f57be9029ec04e9885fabf99195 # 1.27-bookworm
    steps:
      - uses: coffey-labs/actions/checkout@fab0c4d45e0162963965f1555df27b7bed5e20ec
      - run: go vet ./...
      - run: go test -count=1 ./...
      # Left as `go run ...@latest`, as the workflow had it: a vulnerability
      # check wants today's database, not a pinned copy of last month's.
      - run: go run golang.org/x/vuln/cmd/govulncheck@latest ./...

  docker-build:
    if: ${{ !startsWith(github.ref, 'refs/tags/') }}
    needs: [web]
    runs-on: docker
    container:
      image: docker:28-cli@sha256:625d9431a9f54c5a2bc90f24f0e1c3d55b1349fd857dd85035f98c2c9acbdd4d # 28-cli
      volumes:
        - /var/run/docker.sock:/var/run/docker.sock
    steps:
      - uses: coffey-labs/actions/checkout@fab0c4d45e0162963965f1555df27b7bed5e20ec
      - run: |
          tag="ihasvpn:ci-$(echo "$GITHUB_SHA" | cut -c1-8)"
          docker build -t "$tag" .
          docker image rm "$tag"

  # The workflow built each platform on its own native runner and joined the
  # two digests into one tag. There is a single amd64 runner here, so arm64
  # goes through QEMU instead -- slower, but this is tag-driven and the
  # alternative is shipping amd64 only, which is what the account suspension
  # already cost us once. TrueNAS and Unraid users pull arm64.
  #
  # The version is the tag without its leading "v". publish.yml used
  # `git describe --tags --always`, which on a tag build is exactly the tag;
  # passing the tag with the "v" still on would make /api/health report a
  # different string from every earlier build.
  #
  # web and go run on tags too, so publish waits for both. (In the GitLab port
  # they were limited to merge requests and main, while publish still needed
  # them, so a tag pipeline could not be created at all.)
  #
  # The push logs in with PACKAGE_TOKEN (jcoffey-dev, write:package): Gitea's
  # per-job token is refused by the container registry.
  publish:
    if: ${{ startsWith(github.ref, 'refs/tags/') }}
    needs: [web, go]
    runs-on: docker
    container:
      image: docker:28-cli@sha256:625d9431a9f54c5a2bc90f24f0e1c3d55b1349fd857dd85035f98c2c9acbdd4d # 28-cli
      volumes:
        - /var/run/docker.sock:/var/run/docker.sock
    env:
      REGISTRY: ${{ vars.REGISTRY }}
      IMAGE: ${{ vars.REGISTRY }}/${{ github.repository }}
      PACKAGE_TOKEN: ${{ secrets.PACKAGE_TOKEN }}
    steps:
      - uses: coffey-labs/actions/checkout@fab0c4d45e0162963965f1555df27b7bed5e20ec
      - run: |
          test -n "$REGISTRY"
          echo "VERSION=${GITHUB_REF_NAME#v}" >> "$GITHUB_ENV"
          test -n "$PACKAGE_TOKEN" || { echo "PACKAGE_TOKEN secret is not set on this repository" >&2; exit 1; }
          echo "$PACKAGE_TOKEN" | docker login -u jcoffey-dev --password-stdin "$REGISTRY"
          docker run --privileged --rm tonistiigi/binfmt --install arm64
          docker buildx create --use --name gitea-builder --driver docker-container || docker buildx use gitea-builder
      - run: |
          docker buildx build \
            --platform linux/amd64,linux/arm64 \
            --build-arg IHASVPN_VERSION="$VERSION" \
            --provenance=false --sbom=false \
            --tag "$IMAGE:$VERSION" \
            --tag "$IMAGE:latest" \
            --push .
          docker buildx imagetools inspect "$IMAGE:$VERSION"
      # Gitea keeps a container package on its owner; linking it shows it on
      # the repository's Packages tab. Idempotent.
      - run: |
          apk add --no-cache -q curl
          curl -fsS -o /dev/null -X POST -H "Authorization: token $PACKAGE_TOKEN" \
            "$CI_SERVER_INTERNAL/api/v1/packages/${GITHUB_REPOSITORY%%/*}/container/${GITHUB_REPOSITORY#*/}/-/link/${GITHUB_REPOSITORY#*/}" \
            || echo "package already linked (or link refused); not fatal"
      - if: always()
        run: docker logout "$REGISTRY" || true