name: CI

on:
  push:
    branches:
      - main
  pull_request: {}

env:
  # Common versions
  GOLANGCI_VERSION: 'v2.4.0'
  KUBERNETES_VERSION: '1.33.x'

  # Sonar
  SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

permissions:
  contents: read

jobs:
  detect-noop:
    permissions:
      actions: write  # for fkirc/skip-duplicate-actions to skip or stop workflow runs
      contents: read  # for fkirc/skip-duplicate-actions to read and compare commits
    runs-on: ubuntu-latest
    outputs:
      noop: ${{ steps.noop.outputs.should_skip }}
    steps:
      - uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
        with:
          egress-policy: audit
      - name: Detect No-op Changes
        id: noop
        uses: fkirc/skip-duplicate-actions@f75f66ce1886f00957d99748a42c724f4330bdcf # v5.3.1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          paths_ignore: '["**.md", "**.png", "**.jpg"]'
          do_not_skip: '["workflow_dispatch", "schedule", "push"]'
          concurrent_skipping: false

  lint:
    permissions:
      contents: read  # for actions/checkout to fetch code
      pull-requests: read  # for golangci/golangci-lint-action to fetch pull requests
    runs-on: ubuntu-latest
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true' && github.ref != 'refs/heads/main'

    steps:
      - uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
        with:
          egress-policy: audit
      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1

      - name: Setup Go
        uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
        id: setup-go
        with:
          go-version-file: "go.mod"

      - name: Download Go modules
        if: ${{ steps.setup-go.outputs.cache-hit != 'true' }}
        run: go mod download

      - name: Run lint
        run: make lint

  license-check:
    permissions:
      contents: read  # for actions/checkout to fetch code
      pull-requests: read  # for golangci/golangci-lint-action to fetch pull requests
    runs-on: ubuntu-latest
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true' && github.ref != 'refs/heads/main'

    steps:
      - uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
        with:
          egress-policy: audit
      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
      - name: Check License Headers
        uses: apache/skywalking-eyes/header@61275cc80d0798a405cb070f7d3a8aaf7cf2c2c1 # v0.8.0

  check-diff:
    runs-on: ubuntu-latest
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true' && github.ref != 'refs/heads/main'

    steps:
      - uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
        with:
          egress-policy: audit
      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
      - uses: hashicorp/setup-terraform@712b43959e9be7e82c34d18450fa5ec3237af3f1 # v3
      - name: Setup Go
        uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
        id: setup-go
        with:
          go-version-file: "go.mod"

      - name: Download Go modules
        if: ${{ steps.setup-go.outputs.cache-hit != 'true' }}
        run: go mod download

      - name: Configure Git
        run: |
          git config user.name "$GITHUB_ACTOR"
          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"

      - name: Check Diff
        run: |
          make check-diff

  unit-tests:
    runs-on: ubuntu-latest
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'

    steps:
      - uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
        with:
          egress-policy: audit
      - name: Checkout
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1

      - name: Fetch History
        run: git fetch --prune --unshallow

      - name: Setup Go
        uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
        id: setup-go
        with:
          go-version-file: "go.mod"

      - name: Download Go modules
        if: ${{ steps.setup-go.outputs.cache-hit != 'true' }}
        run: go mod download

      - name: Cache envtest binaries
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
        with:
          path: bin/k8s
          key: ${{ runner.os }}-envtest-${{env.KUBERNETES_VERSION}}

      - name: Run Unit Tests
        run: |
          make test

      - name: Publish Unit Test Coverage
        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.5.2
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
        with:
          flags: unittests
          file: ./cover.out

  publish-artifacts:
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'
    uses: ./.github/workflows/publish.yml
    permissions:
      contents: read  #actions/checkout
      packages: write #for publishing artifacts
      id-token: write #for keyless sign
    strategy:
      matrix:
        include:
        - dockerfile: "Dockerfile"
          build-args: "CGO_ENABLED=0"
          build-arch: "amd64 arm64 s390x ppc64le"
          build-platform: "linux/amd64,linux/arm64,linux/s390x,linux/ppc64le"
          tag-suffix: "" # distroless
        - dockerfile: "Dockerfile.ubi"
          build-args: "CGO_ENABLED=0"
          build-arch: "amd64 arm64 ppc64le"
          build-platform: "linux/amd64,linux/arm64,linux/ppc64le"
          tag-suffix: "-ubi"
        - dockerfile: "Dockerfile.ubi"
          build-args: "CGO_ENABLED=0 GOEXPERIMENT=boringcrypto"
          build-arch: "amd64 ppc64le"
          build-platform: "linux/amd64,linux/ppc64le"
          tag-suffix: "-ubi-boringssl"
    with:
      dockerfile: ${{ matrix.dockerfile }}
      tag-suffix: ${{ matrix.tag-suffix }}
      image-name: ghcr.io/${{ github.repository }}
      build-platform: ${{ matrix.build-platform }}
      build-args: ${{ matrix.build-args }}
      build-arch: ${{ matrix.build-arch }}
      ref: ${{ github.ref }}
    secrets:
      IS_FORK: ${{ secrets.GHCR_USERNAME }} # this is just a secret to verify it is a fork or not, no other utility