name: CI master

on:
  push:
    branches: [master]
  workflow_dispatch:
    inputs:
      suite:
        description: Manual CI suite to run
        required: true
        default: larger-runner-benchmark
        type: choice
        options:
          - larger-runner-benchmark
          - consolidated-runner-benchmark

# A master push may carry only the two self-hosted standby drills and the Wine
# apt cache seeder; those drills outlast the interval between master merges, so
# push is exempt from cancellation (see ci-failover-runbook). workflow_dispatch
# keeps cancelling: a re-dispatched runner benchmark holds up to 12 larger
# runners for 15 minutes in this same group.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name != 'push' }}

permissions:
  contents: read

env:
  PRIMARY_NODE_VERSION: '24'
  # CI runs must never report to the production telemetry endpoint baked
  # into apps/cli/cordis.yml (AppCLIEntry disables the row when set).
  DSH_TELEMETRY_DISABLED: '1'

jobs:
  # Master seeds the Wine apt-archive cache in the default-branch scope,
  # which every pull request's windows job can restore; saves from
  # pull-request runs are scoped to their own merge ref and help nobody
  # else. Runs in seconds when the image version already has a cache.
  wine-apt-cache:
    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
    name: wine apt cache
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Compose Wine apt cache key
        id: wine-cache-key
        run: echo "key=wine-debs-${ImageOS:-linux}-${ImageVersion:-v0}" >> "$GITHUB_OUTPUT"

      - uses: actions/cache@v4
        id: wine-cache
        with:
          path: ~/wine-debs
          key: ${{ steps.wine-cache-key.outputs.key }}

      - name: Download the Wine dependency closure
        if: steps.wine-cache.outputs.cache-hit != 'true'
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends --download-only wine
          mkdir -p "$HOME/wine-debs"
          cp /var/cache/apt/archives/*.deb "$HOME/wine-debs/"
          du -sh "$HOME/wine-debs"

  # Hot-standby drill for the in-house self-hosted pool: every master move
  # re-runs the complete unsharded aggregate on the persistent 64-core VM,
  # continuously proving that environment can take over a required lane if
  # the hosted pools degrade (the switch is then setting the writer-manageable
  # DSH_CI_FAILOVER_LINUX variable — see the failover runbook, no merge required).
  # Push-triggered, so this lane always executes the base branch's own
  # workflow definition. This workflow never listens to pull_request, so the
  # drill does not appear in PR checks. No cache steps because the VM's
  # persistent pnpm store and tool caches make them redundant (and saving here
  # would poison the hosted cache namespace with self-hosted paths).
  serial-linux-selfhosted:
    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
    name: serial / linux (self-hosted standby)
    runs-on: [self-hosted, linux, x64, vm-backup]
    steps:
      # DSH_ARCHIVE_BASE_REF below compares the frozen-archive gate against
      # github.event.before, so full history is required: depth 2 would miss it
      # on multi-commit or force pushes; full fetch is cheap here because
      # checkout resolves against the VM's local mirror.
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - uses: pnpm/action-setup@v4
        with:
          dest: ${{ runner.temp }}/setup-pnpm-${{ github.run_id }}-${{ github.run_attempt }}

      - uses: actions/setup-node@v6
        with:
          node-version: ${{ env.PRIMARY_NODE_VERSION }}

      - name: Configure persistent pnpm store
        run: echo "PNPM_CONFIG_STORE_DIR=$HOME/.local/share/pnpm/store" >> "$GITHUB_ENV"

      - name: Install (immutable)
        run: pnpm install --frozen-lockfile

      # The persistent VM image owns Playwright's Linux system packages; this
      # step also proves that browser provisioning remains usable for failover.
      - name: Install Playwright Chromium
        run: pnpm --filter @deepseek-ai/dsh-web-frontend exec playwright install chromium

      - name: Prepare bubblewrap (unrestrict userns)
        run: bash scripts/prepare-ci-bubblewrap.sh

      - name: Run complete unsharded primary Node CI serially
        env:
          DSH_ARCHIVE_BASE_REF: ${{ github.event.before }}
          DSH_COVERAGE_MAX_WORKERS: '1'
          DSH_E2E_MAX_WORKERS: '1'
          DSH_GATE_CONCURRENCY: '1'
          DSH_OXLINT_THREADS: '1'
          DSH_PUBLINT_CONCURRENCY: '1'
          DSH_SNAPSHOT_MAX_CONCURRENCY: '1'
        run: pnpm run check:ci:linux-primary

  # TODO(hosted-serial-ci): Re-enable the one remaining disabled hosted serial
  # reference job (serial-macos) before release. Re-enabling serial-macos does
  # not restore a Linux hosted-cache producer: decide whether to add a master
  # seeder or remove the restore-only steps if cold starts become a concern.
  serial-macos:
    if: false
    name: serial / macos
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v6

      - uses: pnpm/action-setup@v4
        with:
          dest: ${{ runner.temp }}/setup-pnpm-${{ github.run_id }}-${{ github.run_attempt }}

      - uses: actions/setup-node@v6
        with:
          node-version: ${{ env.PRIMARY_NODE_VERSION }}

      - name: Install (immutable)
        run: pnpm install --frozen-lockfile

      - name: Run complete unsharded primary Node CI serially
        env:
          DSH_COVERAGE_MAX_WORKERS: '1'
          DSH_E2E_MAX_WORKERS: '1'
          DSH_GATE_CONCURRENCY: '1'
          DSH_PUBLINT_CONCURRENCY: '1'
          DSH_SNAPSHOT_MAX_CONCURRENCY: '1'
        run: pnpm run check:ci

  # Hot-standby drill for the in-house self-hosted Windows pool: every master
  # move re-runs the complete unsharded Windows gate inventory on the persistent
  # VM, continuously proving that environment can take over the required
  # `windows` lane if the hosted pool degrades (the switch is setting the
  # writer-manageable DSH_CI_FAILOVER_WINDOWS variable — see the failover
  # runbook, no merge required). Push-triggered, so this lane always executes
  # the base branch's own workflow definition. This workflow never listens to
  # pull_request, so the drill does not appear in PR checks. No cache steps
  # because the VM's persistent pnpm store and tool caches make them redundant
  # (and saving here would poison the hosted cache namespace with self-hosted
  # paths).
  serial-windows:
    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
    name: serial / windows (self-hosted standby)
    runs-on: [self-hosted, dsh-win-ci, windows]
    timeout-minutes: 120
    steps:
      - uses: actions/checkout@v6

      - name: Enable Developer Mode (symlink support)
        shell: pwsh
        run: >-
          reg add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock"
          /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"

      - uses: pnpm/action-setup@v4
        with:
          dest: ${{ runner.temp }}/setup-pnpm-${{ github.run_id }}-${{ github.run_attempt }}

      - uses: actions/setup-node@v6
        with:
          node-version: ${{ env.PRIMARY_NODE_VERSION }}

      - name: Configure persistent pnpm store
        shell: pwsh
        # The store must share the ReFS workspace volume for the clone
        # import method below; LOCALAPPDATA (C:) would cross volumes and
        # break block clone. See 2026-08-30-windows-refs-store-block-clone-install.
        run: |
          $storeRoot = "F:\.pnpm-store"
          echo "PNPM_CONFIG_STORE_DIR=$storeRoot" >> $env:GITHUB_ENV

      - name: Install (immutable)
        shell: pwsh
        # See 2026-08-30-windows-refs-store-block-clone-install for the
        # ReFS block-clone rationale; use clone only on ReFS.
        run: >-
          $drive = (Split-Path -Qualifier $env:GITHUB_WORKSPACE).TrimEnd(':');
          $fs = (Get-Volume -DriveLetter $drive).FileSystem;
          if ($fs -eq 'ReFS') {
            corepack pnpm install --frozen-lockfile --package-import-method=clone
          } else {
            pnpm install --frozen-lockfile
          }

      - name: Run complete unsharded Windows gate inventory serially
        shell: pwsh
        env:
          DSH_COVERAGE_MAX_WORKERS: '1'
          DSH_COVERAGE_TEST_TIMEOUT_MS: '90000'
          DSH_GATE_CONCURRENCY: '1'
          DSH_PUBLINT_CONCURRENCY: '1'
        run: pnpm run check:ci:windows-complete

  # Manual, bounded comparison of the actual critical Linux and Windows lanes.
  # The named pools are restricted at the organization level to this repository.
  larger-runner-benchmark:
    if: github.event_name == 'workflow_dispatch' && inputs.suite == 'larger-runner-benchmark'
    runs-on: ${{ matrix.runner }}
    timeout-minutes: 15
    strategy:
      fail-fast: false
      max-parallel: 12
      matrix:
        include:
          - platform: linux
            cores: '4'
            runner: dsh-ubuntu-24-04-4core
            workload: typecheck
          - platform: linux
            cores: '8'
            runner: dsh-ubuntu-24-04-8core
            workload: typecheck
          - platform: linux
            cores: '16'
            runner: dsh-ubuntu-24-04-16core
            workload: typecheck
          - platform: linux
            cores: '32'
            runner: dsh-ubuntu-24-04-32core
            workload: typecheck
          - platform: linux
            cores: '64'
            runner: dsh-ubuntu-24-04-64core
            workload: typecheck
          - platform: linux
            cores: '96'
            runner: dsh-ubuntu-24-04-96core
            workload: typecheck
          - platform: windows
            cores: '4'
            runner: dsh-windows-2025-4core
            workload: production-site
          - platform: windows
            cores: '8'
            runner: dsh-windows-2025-8core
            workload: production-site
          - platform: windows
            cores: '16'
            runner: dsh-windows-2025-16core
            workload: production-site
          - platform: windows
            cores: '32'
            runner: dsh-windows-2025-32core
            workload: production-site
          - platform: windows
            cores: '64'
            runner: dsh-windows-2025-64core
            workload: production-site
          - platform: windows
            cores: '96'
            runner: dsh-windows-2025-96core
            workload: production-site
    steps:
      - uses: actions/checkout@v6

      - uses: pnpm/action-setup@v4
        with:
          dest: ${{ runner.temp }}/setup-pnpm-${{ github.run_id }}-${{ github.run_attempt }}

      # The benchmark's Windows lanes deliberately skip the store cache like
      # the independent native Windows job; an empty input disables caching.
      - uses: actions/setup-node@v6
        with:
          node-version: ${{ env.PRIMARY_NODE_VERSION }}
          cache: ${{ matrix.platform == 'linux' && 'pnpm' || '' }}

      - name: Report runner capacity
        run: >-
          node -e "const os = require('node:os');
          console.log(JSON.stringify({ arch: process.arch, cpus: os.cpus().length,
          memoryGiB: Math.round(os.totalmem() / 2 ** 30) }))"

      - name: Install (immutable)
        run: pnpm install --frozen-lockfile

      - name: Run critical Linux typecheck lane
        if: matrix.platform == 'linux'
        run: pnpm run typecheck

      - name: Run critical Windows production-site lane
        if: matrix.platform == 'windows'
        run: pnpm run docs:build

  # Manual comparison of the intended low-fanout topology. Linux runs the
  # complete unsharded primary aggregate with bounded in-runner parallelism;
  # Windows runs both blocking build targets concurrently through run-gates.
  consolidated-runner-benchmark:
    if: github.event_name == 'workflow_dispatch' && inputs.suite == 'consolidated-runner-benchmark'
    runs-on: ${{ matrix.runner }}
    timeout-minutes: 15
    strategy:
      fail-fast: false
      max-parallel: 12
      matrix:
        include:
          - platform: linux
            cores: '4'
            runner: dsh-ubuntu-24-04-4core
            workers: '4'
          - platform: linux
            cores: '8'
            runner: dsh-ubuntu-24-04-8core
            workers: '8'
          - platform: linux
            cores: '16'
            runner: dsh-ubuntu-24-04-16core
            workers: '16'
          - platform: linux
            cores: '32'
            runner: dsh-ubuntu-24-04-32core
            workers: '32'
          - platform: linux
            cores: '64'
            runner: dsh-ubuntu-24-04-64core
            workers: '32'
          - platform: linux
            cores: '96'
            runner: dsh-ubuntu-24-04-96core
            workers: '32'
          - platform: windows
            cores: '4'
            runner: dsh-windows-2025-4core
            workers: '2'
          - platform: windows
            cores: '8'
            runner: dsh-windows-2025-8core
            workers: '2'
          - platform: windows
            cores: '16'
            runner: dsh-windows-2025-16core
            workers: '2'
          - platform: windows
            cores: '32'
            runner: dsh-windows-2025-32core
            workers: '2'
          - platform: windows
            cores: '64'
            runner: dsh-windows-2025-64core
            workers: '2'
          - platform: windows
            cores: '96'
            runner: dsh-windows-2025-96core
            workers: '2'
    steps:
      - uses: actions/checkout@v6

      - uses: pnpm/action-setup@v4
        with:
          dest: ${{ runner.temp }}/setup-pnpm-${{ github.run_id }}-${{ github.run_attempt }}

      # Unlike the larger-runner suite, both platforms cache the store here:
      # the consolidated topology measures cache mechanics as workload.
      - uses: actions/setup-node@v6
        with:
          node-version: ${{ env.PRIMARY_NODE_VERSION }}
          cache: pnpm

      - name: Report runner capacity
        run: >-
          node -e "const os = require('node:os');
          console.log(JSON.stringify({ arch: process.arch, cpus: os.cpus().length,
          memoryGiB: Math.round(os.totalmem() / 2 ** 30) }))"

      - name: Install and prepare Linux
        if: matrix.platform == 'linux'
        run: |
          pnpm install --frozen-lockfile &
          install_pid=$!
          bash scripts/prepare-ci-bubblewrap.sh &
          sandbox_pid=$!
          install_status=0
          wait "$install_pid" || install_status=$?
          sandbox_status=0
          wait "$sandbox_pid" || sandbox_status=$?
          if (( install_status != 0 )); then exit "$install_status"; fi
          exit "$sandbox_status"

      - name: Install (immutable)
        if: matrix.platform == 'windows'
        shell: pwsh
        run: pnpm install --frozen-lockfile

      - name: Run complete unsharded primary Node CI concurrently
        if: matrix.platform == 'linux'
        env:
          DSH_COVERAGE_MAX_WORKERS: ${{ matrix.workers }}
          DSH_GATE_CONCURRENCY: ${{ matrix.workers }}
          DSH_OXLINT_THREADS: ${{ matrix.workers }}
          DSH_PUBLINT_CONCURRENCY: ${{ matrix.workers }}
          DSH_SNAPSHOT_MAX_CONCURRENCY: ${{ matrix.workers }}
        run: pnpm run check:ci

      - name: Run blocking Windows builds concurrently
        if: matrix.platform == 'windows'
        shell: pwsh
        env:
          DSH_GATE_CONCURRENCY: ${{ matrix.workers }}
        run: pnpm run check:ci:windows-blocking
