name: ci

# One pipeline, eight jobs:
#
#   gitleaks        secret scan over the full history
#   lint            ruff check, ruff format --check, mypy
#   test-unit       pytest (coverage gate from pyproject.toml: 90 percent)
#   test-integration  pytest against a throwaway Gitea in Docker
#   test-mcp        MCP smoke tests, including against the freshly built image
#   build-and-push  build and scan the image; push it on push events (needs lint, test-unit,
#                   test-integration, test-mcp and security, so :dev and :latest are never
#                   pushed while any of them is red)
#   docs-check      docs drift check
#   security        security test suite, pip-audit, ruff bandit rules
#
# Jobs that use the shared Docker daemon or secrets (test-integration, test-mcp,
# build-and-push) do not run for pull requests from forks: a fork controls the
# workflow and test code, and access to the daemon is root-equivalent on the
# host. Also enable "require approval for workflows from forks" in Gitea.
#
# Every third-party action is pinned to a full commit SHA (the version is in the
# trailing comment); bump deliberately.
#
# Docker hygiene on the shared runner: every resource this workflow creates has
# a per-run name (aegis-ci-<run id>-...) and is removed by an `if: always()`
# step that deletes exactly those names. Registry tags (:sha-<12>, :dev, :latest, :main)
# are shared with other users of the daemon: they are applied only immediately before the
# push and only untagged afterwards, never used to remove containers. Nothing here ever
# prunes.

on:
  push:
    branches:
      - '**'
  pull_request:
    branches:
      - dev
      - main

env:
  UV_PYTHON_DOWNLOADS: never
  UV_NO_PROGRESS: "1"

jobs:
  # ---------------------------------------------------------------------------
  # 1. Secret scan: pinned gitleaks binary (sha256 verified), full history.
  # ---------------------------------------------------------------------------
  gitleaks:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Install gitleaks
        shell: bash
        run: |
          bin_dir="${RUNNER_TEMP:-/tmp}/gitleaks-bin"
          bash scripts/ci/install_gitleaks.sh "${bin_dir}"
          echo "${bin_dir}" >> "$GITHUB_PATH"

      - name: Scan history
        shell: bash
        run: gitleaks git --config .gitleaks.toml --redact --no-banner --verbose --exit-code 1 .

  # ---------------------------------------------------------------------------
  # 2. Lint
  # ---------------------------------------------------------------------------
  lint:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Ruff check
        run: uv run ruff check .
      - name: Ruff format
        run: uv run ruff format --check .
      - name: Mypy
        run: uv run mypy src

  # ---------------------------------------------------------------------------
  # 3. Unit tests (integration tests are skipped without AEGIS_INTEGRATION=1).
  # ---------------------------------------------------------------------------
  test-unit:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Run unit tests
        run: uv run pytest --cov-report=term-missing --cov-report=xml:coverage.xml
      - name: Upload coverage report
        # Best effort: some act_runner versions do not support the v4 artifact
        # backend, and the coverage gate itself already ran above.
        continue-on-error: true
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: coverage-${{ github.run_id }}
          path: coverage.xml

  # ---------------------------------------------------------------------------
  # 4. Integration tests against a throwaway Gitea 28.1.0 in Docker. The job
  #    container is joined to a per-run network (container mode), see
  #    tests/integration/README.md. The harness removes what it creates; the
  #    cleanup step is the safety net for cancelled runs.
  # ---------------------------------------------------------------------------
  test-integration:
    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
    runs-on: ubuntu-latest
    timeout-minutes: 40
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Run integration tests
        env:
          AEGIS_INTEGRATION: "1"
          AEGIS_IT_NETWORK_MODE: container
          # A runner that cannot start must fail the job, not xfail the Actions scenario.
          AEGIS_IT_REQUIRE_RUNNER: "1"
        run: uv run pytest tests/integration -m integration --no-cov
      - name: Cleanup
        if: always()
        shell: bash
        run: bash scripts/ci/cleanup_job_resources.sh

  # ---------------------------------------------------------------------------
  # 5. MCP smoke tests. Builds its own copy of the image (same Dockerfile, same
  #    commit) so the tests can also exercise the container, and passes the
  #    reference through AEGIS_MCP_IMAGE. The image cannot be shared with
  #    build-and-push: pull requests never push, and jobs may land on different
  #    runners.
  # ---------------------------------------------------------------------------
  test-mcp:
    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
    runs-on: ubuntu-latest
    timeout-minutes: 40
    env:
      MCP_IMAGE: aegis-ci-${{ github.run_id }}-mcp:test
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Build image
        run: docker build -f docker/Dockerfile -t "${MCP_IMAGE}" .
      - name: Run MCP smoke tests
        env:
          AEGIS_MCP_IMAGE: ${{ env.MCP_IMAGE }}
          # Smoke tests that start a throwaway Gitea use the same harness as the
          # integration tests.
          AEGIS_INTEGRATION: "1"
          AEGIS_IT_NETWORK_MODE: container
        run: uv run pytest tests/mcp -m mcp_smoke --no-cov
      - name: Cleanup
        if: always()
        shell: bash
        run: bash scripts/ci/cleanup_job_resources.sh "${MCP_IMAGE}"

  # ---------------------------------------------------------------------------
  # 6. Build the image from the checked-out commit under a per-run local tag
  #    (aegis-ci-<run id>-build:<sha>). On push events it is also tagged and pushed:
  #      :sha-<12>   every branch (immutable, traceable to the commit; lets any
  #                  feature branch image be pulled and tested)
  #      :dev        additionally on dev
  #      :latest and :main  additionally on main
  #    Pull requests only build. The pushed digest is recorded in the job
  #    outputs and the job summary.
  # ---------------------------------------------------------------------------
  build-and-push:
    needs: [lint, test-unit, test-integration, test-mcp, security]
    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
    runs-on: ubuntu-latest
    timeout-minutes: 30
    outputs:
      image: ${{ steps.meta.outputs.sha_tag }}
      digest: ${{ steps.digest.outputs.digest }}
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false

      - name: Compute image name and tags
        id: meta
        shell: bash
        run: |
          IMAGE="git.hiddenden.cafe/${GITHUB_REPOSITORY,,}"
          SHA_TAG="${IMAGE}:sha-${GITHUB_SHA::12}"
          # Local build tag: unique per run, never a registry tag.
          BUILD_TAG="aegis-ci-${GITHUB_RUN_ID}-build:${GITHUB_SHA}"
          EXTRA_TAGS=""
          if [ "${GITHUB_EVENT_NAME}" = "push" ]; then
            if [ "${GITHUB_REF_NAME}" = "main" ]; then
              EXTRA_TAGS="${IMAGE}:latest ${IMAGE}:main"
            elif [ "${GITHUB_REF_NAME}" = "dev" ]; then
              EXTRA_TAGS="${IMAGE}:dev"
            fi
          fi
          {
            echo "image=${IMAGE}"
            echo "sha_tag=${SHA_TAG}"
            echo "build_tag=${BUILD_TAG}"
            echo "extra_tags=${EXTRA_TAGS}"
          } >> "$GITHUB_OUTPUT"

      - name: Build image
        shell: bash
        run: |
          docker build -f docker/Dockerfile \
            --label "org.opencontainers.image.revision=${GITHUB_SHA}" \
            --label "org.opencontainers.image.source=https://git.hiddenden.cafe/${GITHUB_REPOSITORY}" \
            -t "${{ steps.meta.outputs.build_tag }}" .

      - name: Smoke-test image
        shell: bash
        run: docker run --rm "${{ steps.meta.outputs.build_tag }}" version

      # Vulnerability scan of the image that is about to be pushed: pinned Trivy
      # (sha256 verified), fails on fixable HIGH and CRITICAL findings. Waivers live
      # in security/trivyignore.txt and docs/security.md.
      - name: Install Trivy
        shell: bash
        run: |
          bin_dir="${RUNNER_TEMP:-/tmp}/trivy-bin"
          bash scripts/ci/install_trivy.sh "${bin_dir}"
          echo "${bin_dir}" >> "$GITHUB_PATH"

      - name: Scan image
        shell: bash
        run: bash scripts/ci/scan_image.sh "${{ steps.meta.outputs.build_tag }}"

      # No third-party action sees the registry token: the CLI reads it from stdin. The
      # credentials go to a per-job config directory (DOCKER_CONFIG), never into the shared
      # credential store of the runner's Docker client.
      - name: Log in to the registry
        if: github.event_name == 'push'
        shell: bash
        env:
          # PAT with write:package scope. The built-in token lacks package-write
          # on this instance.
          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
          REGISTRY_USER: ${{ github.actor }}
        run: |
          config_dir="$(mktemp -d)"
          echo "DOCKER_CONFIG=${config_dir}" >> "$GITHUB_ENV"
          printf '%s' "${REGISTRY_TOKEN}" | DOCKER_CONFIG="${config_dir}" \
            docker login git.hiddenden.cafe --username "${REGISTRY_USER}" --password-stdin

      # The registry tags are applied here, right before the push, and removed again by the
      # cleanup step (untag only).
      - name: Tag and push
        if: github.event_name == 'push'
        shell: bash
        run: |
          for tag in ${{ steps.meta.outputs.sha_tag }} ${{ steps.meta.outputs.extra_tags }}; do
            docker tag "${{ steps.meta.outputs.build_tag }}" "${tag}"
          done
          for tag in ${{ steps.meta.outputs.sha_tag }} ${{ steps.meta.outputs.extra_tags }}; do
            docker push "${tag}"
          done

      - name: Record digest
        id: digest
        shell: bash
        run: |
          if [ "${GITHUB_EVENT_NAME}" = "push" ]; then
            DIGEST="$(docker inspect --format '{{index .RepoDigests 0}}' "${{ steps.meta.outputs.sha_tag }}")"
          else
            DIGEST="not pushed (pull request build)"
          fi
          echo "digest=${DIGEST}" >> "$GITHUB_OUTPUT"
          {
            echo "### Image"
            echo
            echo "- tag: \`${{ steps.meta.outputs.sha_tag }}\`"
            echo "- digest: \`${DIGEST}\`"
            if [ -n "${{ steps.meta.outputs.extra_tags }}" ]; then
              echo "- also tagged: \`${{ steps.meta.outputs.extra_tags }}\`"
            fi
          } >> "${GITHUB_STEP_SUMMARY:-/dev/null}"
          echo "image digest: ${DIGEST}"

      # Removes exactly what this run created, even on failure. No prune.
      - name: Cleanup
        if: always()
        shell: bash
        run: |
          # Only the per-job credential directory created above is removed.
          if [ -n "${DOCKER_CONFIG:-}" ]; then
            rm -rf "${DOCKER_CONFIG}"
          fi
          # Registry tags first (untag only), then the per-run build tag.
          bash scripts/ci/cleanup_job_resources.sh \
            "${{ steps.meta.outputs.sha_tag }}" ${{ steps.meta.outputs.extra_tags }} \
            "${{ steps.meta.outputs.build_tag }}"

  # ---------------------------------------------------------------------------
  # 7. Docs drift check
  # ---------------------------------------------------------------------------
  docs-check:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Check docs against code and spec
        run: uv run python scripts/check_docs.py

  # ---------------------------------------------------------------------------
  # 8. Security: test suite, dependency audit, bandit rules via ruff.
  #    Waivers live in docs/security.md; advisory ignores in
  #    security/pip-audit-ignore.txt.
  # ---------------------------------------------------------------------------
  security:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
        with:
          persist-credentials: false
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"
      - name: Set up uv
        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5.4.2
        with:
          version: "0.12.5"
          enable-cache: false
      - name: Install dependencies
        run: uv sync --locked
      - name: Security tests
        run: uv run pytest tests/security --no-cov
      - name: Dependency audit
        run: bash scripts/ci/pip_audit.sh
      - name: Ruff security rules
        run: uv run ruff check --select S .