name: Update certs

on:
  workflow_dispatch:
  schedule:
  - cron: '0 6 * * *' # Nightly 6AM UTC

# This allows a subsequently queued workflow run to interrupt previous runs
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id}}
  cancel-in-progress: true

defaults:
  run:
    # fail-fast using bash -eo pipefail. See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
    shell: bash

permissions:
  contents: read

jobs:
  update-certs:
    permissions:
      contents: write  # for peter-evans/create-pull-request to create branch
      pull-requests: write  # for peter-evans/create-pull-request to create a PR
    runs-on: ubuntu-latest
    steps:
    - name: Harden Runner
      uses: step-security/harden-runner@63c24ba6bd7ba022e95695ff85de572c04a18142 # v2.7.0
      with:
        egress-policy: audit

    - name: Checkout code
      uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # v.24.0

    # We trust own version of mk-ca-bundle.pl and its output, but as an extra check
    # we compare with the cacert.pem served by https://curl.se/ca/cacert.pem (this
    # allows detecting updates in the mk-ca-bundle.pl or any issues with the output
    # of mk-ca-bundle.pl).
    - name: Update certs
      run: |
        cd orbit/pkg/packaging && ./mk-ca-bundle.pl -u certs.pem
        curl https://curl.se/ca/cacert.pem --output cacert.pem
        diff --ignore-matching-lines "Certificate data from Mozilla as of*" certs.pem cacert.pem
        rm cacert.pem

    - name: PR changes
      uses: peter-evans/create-pull-request@f22a7da129c901513876a2380e2dae9f8e145330 # v3.12.1
      with:
        base: main
        branch: update-ca-certs
        delete-branch: true
        title: Update Orbit CA certs [automated]
        commit-message: |
          Update Orbit CA certs [automated]

          Generated automatically with curl mk-ca-bundle.pl script.
        body: Automated change from [GitHub action](https://github.com/fleetdm/fleet/actions/workflows/update-certs.yml).