upstream-mattermost/.github/workflows/e2e-ci-cache-warm.yml

# Warms the ~/.npm registry cache used by the e2e suites (cypress, playwright,
# api). Runs once per day on master; all e2e/api CI jobs restore this cache
# read-only via .github/actions/restore-e2e-npm-cache and never write back, so
# this job is its sole writer.
#
# The cache is keyed on the OS/arch and a hash of all e2e lockfiles. Keep the key
# below in sync with .github/actions/restore-e2e-npm-cache, which is the canonical
# definition of the bucket's lockfile set. PRs that change a lockfile miss the
# exact key and fall back to the most recent warm entry via restore-keys.
#
# The webapp node_modules cache is warmed separately by webapp-ci-cache-warm.yml.
name: E2E CI Cache Warm

on:
  schedule:
    - cron: "0 1 * * *" # Daily 1am UTC — 1 h before e2e CI typically runs
  workflow_dispatch:

# Prevent an overlapping manual dispatch and scheduled run from both missing the
# lookup and then racing to reserve the same cache key.
concurrency:
  group: e2e-ci-cache-warm
  cancel-in-progress: false

permissions:
  contents: read
  actions: write # required to save the Actions cache

jobs:
  warm:
    name: Warm E2E npm Registry Cache
    runs-on: ubuntu-24.04
    # Bound a hung run so it can't hold the concurrency group for the default
    # 6-hour timeout and block subsequent warm runs.
    timeout-minutes: 60
    steps:
      - name: Checkout mattermost project
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Check if npm registry cache already warm
        id: e2e-npm-check
        uses: actions/cache/restore@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5.0.3
        with:
          path: ~/.npm
          key: e2e-npm-registry-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('e2e-tests/cypress/package-lock.json', 'e2e-tests/playwright/package-lock.json', 'api/package-lock.json') }}
          lookup-only: true

      - name: ci/setup-node
        if: steps.e2e-npm-check.outputs.cache-hit != 'true'
        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
        with:
          node-version-file: ".nvmrc"

      # ~/.npm is content-addressable and grows additively across installs, so we
      # populate it by running each suite's install, then save the single bucket.
      - name: Install playwright npm packages
        if: steps.e2e-npm-check.outputs.cache-hit != 'true'
        working-directory: e2e-tests/playwright
        run: npm ci

      - name: Install cypress npm packages
        if: steps.e2e-npm-check.outputs.cache-hit != 'true'
        working-directory: e2e-tests/cypress
        run: npm ci

      - name: Install api npm packages
        if: steps.e2e-npm-check.outputs.cache-hit != 'true'
        working-directory: api
        run: npm ci

      - name: Save npm registry cache
        if: steps.e2e-npm-check.outputs.cache-hit != 'true'
        uses: actions/cache/save@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5.0.3
        with:
          path: ~/.npm
          key: e2e-npm-registry-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('e2e-tests/cypress/package-lock.json', 'e2e-tests/playwright/package-lock.json', 'api/package-lock.json') }}