name: CodeQL

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  schedule:
    # Weekly on Monday 03:27 UTC — off-peak and offset from the other
    # scheduled jobs (scorecard 06:00 Mon, labels 04:17 Mon, stale 04:37
    # daily).
    - cron: '27 3 * * 1'

# Default to read-only; the analyze job opts into security-events: write.
permissions:
  contents: read

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

jobs:
  analyze:
    name: Analyze (${{ matrix.language }})
    runs-on: ubuntu-latest
    timeout-minutes: 120
    permissions:
      # Upload CodeQL results to the code-scanning dashboard.
      security-events: write
      # Check out the repository.
      contents: read
      # Read workflow run metadata (required by codeql-action on private
      # repos; harmless on a public repo).
      actions: read

    strategy:
      fail-fast: false
      matrix:
        include:
          # Go only supports "autobuild" or "manual" (not "none"). autobuild
          # discovers every go.mod in the tree and extracts each module
          # separately (the root module, api/apps/v1alpha1, and the three
          # nested image modules that `go build ./...` from the root never
          # reaches), so coverage is broader than a single root build. It first
          # attempts `make` from the repo root — which runs the default Makefile
          # goal, including a network `git fetch upstream --tags` — before
          # falling back to the Go build. setup-go below pins the toolchain to
          # the go.mod version so autobuild does not use whatever Go the runner
          # ships.
          - language: go
            build-mode: autobuild

    steps:
      - name: Checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Set up Go
        uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5
        with:
          go-version-file: go.mod
          cache: false

      - name: Initialize CodeQL
        uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
        with:
          languages: ${{ matrix.language }}
          build-mode: ${{ matrix.build-mode }}

      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
        with:
          category: "/language:${{ matrix.language }}"