name: Windows Setup E2E

# End-to-end fresh-install gate for Windows. Builds a clean windows-latest
# checkout and asserts the build completes, binaries resolve via
# find-browse, and the gstack-paths state root resolves cleanly. Catches Bun
# shell-parser regressions in package.json's build chain (#1538, #1537,
# #1530, #1457, #1561) before they reach users. Then it runs `./setup` into
# an isolated HOME and drives the installed runtime root's browse from an
# unrelated directory: a piped two-command `chain` flow must print the page
# text (the runtime root has no node_modules, so this is the checkout-bundle
# path from #3026, and the piped-stdin path from #3039).
#
# Separate from windows-free-tests.yml because that one runs a curated
# unit-test subset; this one exercises the install path itself.
#
# Runner: GitHub-hosted free windows-latest. ~6-10 min total.

on:
  pull_request:
    branches: [main]
    paths:
      - 'package.json'
      - 'scripts/build.sh'
      - 'scripts/write-version-files.sh'
      - 'setup'
      - 'browse/src/cli.ts'
      - 'browse/src/find-browse.ts'
      - 'browse/src/server.ts'
      - 'browse/src/meta-commands.ts'
      - 'browse/scripts/build-node-server.sh'
      - 'bin/gstack-paths'
      - '.github/workflows/windows-setup-e2e.yml'
  workflow_dispatch:

concurrency:
  # PR-number keyed: head_ref carries no fork prefix, so same-name branches
  # from two forks would share one group and cancel each other's runs.
  group: windows-setup-e2e-${{ github.event.pull_request.number || github.run_id }}
  cancel-in-progress: true

# Install-path exercise only — no token writes.
permissions:
  contents: read

jobs:
  windows-setup:
    runs-on: windows-latest
    timeout-minutes: 25

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7

      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
        with:
          bun-version: 1.4.2

      # Same lockfile-keyed install cache as windows-free-tests.yml (install
      # was 45s of a 64s job, all network).
      - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6
        with:
          path: ~/.bun/install/cache
          key: windows-bun-${{ hashFiles('bun.lock') }}
          # A lockfile bump starts from the previous cache instead of cold
          # (restore alone costs ~43s; without this a bump pays it for nothing).
          restore-keys: |
            windows-bun-

      - name: Configure git identity
        run: |
          git config --global user.email "windows-setup-e2e@gstack.test"
          git config --global user.name "Windows Setup E2E"
          git config --global init.defaultBranch main
        shell: bash

      - name: Install dependencies
        run: bun install --frozen-lockfile
        shell: bash

      - name: Run bun run build (the previously-broken path)
        # This is the regression gate. Bun's Windows shell parser rejected
        # multiple constructs the old inline build chain used; the wave
        # moved the build to scripts/build.sh. If this step fails on
        # Windows, the build chain regressed.
        run: bun run build
        shell: bash
        env:
          GSTACK_SKIP_PLAYWRIGHT: '1'

      - name: Verify binaries exist (with .exe extension on Windows)
        run: |
          set -e
          test -f browse/dist/browse.exe || test -f browse/dist/browse || (echo "MISSING: browse" && exit 1)
          test -f browse/dist/find-browse.exe || test -f browse/dist/find-browse || (echo "MISSING: find-browse" && exit 1)
          test -f design/dist/design.exe || test -f design/dist/design || (echo "MISSING: design" && exit 1)
          test -f bin/gstack-global-discover.exe || test -f bin/gstack-global-discover || (echo "MISSING: gstack-global-discover" && exit 1)
          echo "All binaries present"
        shell: bash

      - name: Verify find-browse resolves to the .exe variant
        run: |
          set -e
          OUT=$(bun browse/src/find-browse.ts 2>&1) || true
          echo "find-browse output: $OUT"
          # On Windows, find-browse should successfully resolve to a binary,
          # whether or not it has the .exe extension on disk. Empty output
          # or "not found" means the .exe extension resolver regressed.
          echo "$OUT" | grep -qE '(browse\.exe|browse)$' || (echo "find-browse failed to resolve binary on Windows" && exit 1)
        shell: bash

      - name: Verify gstack-paths state root resolves
        run: |
          set -e
          eval "$(bash bin/gstack-paths)"
          test -n "$GSTACK_STATE_ROOT" || (echo "GSTACK_STATE_ROOT empty" && exit 1)
          test -n "$PLAN_ROOT" || (echo "PLAN_ROOT empty" && exit 1)
          test -n "$TMP_ROOT" || (echo "TMP_ROOT empty" && exit 1)
          echo "GSTACK_STATE_ROOT=$GSTACK_STATE_ROOT"
          echo "PLAN_ROOT=$PLAN_ROOT"
          echo "TMP_ROOT=$TMP_ROOT"
        shell: bash

      - name: Install with ./setup into an isolated HOME
        # A real install: the codex host's runtime root is a copy of the
        # runtime files with no node_modules beside it. setup installs
        # Playwright's Chromium (best-effort) for the journey below.
        run: |
          set -euo pipefail
          E2E_HOME="$RUNNER_TEMP/gstack-e2e-home"
          mkdir -p "$E2E_HOME"
          HOME="$E2E_HOME" USERPROFILE="$(cygpath -w "$E2E_HOME")" ./setup --host codex
          ROOT="$E2E_HOME/.codex/skills/gstack"
          test -f "$ROOT/.source-path" || (echo "MISSING: $ROOT/.source-path" && exit 1)
          test ! -e "$ROOT/node_modules" || (echo "UNEXPECTED: $ROOT/node_modules (the journey must exercise the copy without it)" && exit 1)
          echo "runtime root: $ROOT -> source $(cat "$ROOT/.source-path")"
        shell: bash

      - name: Installed browse runs a piped chain flow from an unrelated directory
        run: |
          set -euo pipefail
          E2E_HOME="$RUNNER_TEMP/gstack-e2e-home"
          USERPROFILE="$(cygpath -w "$E2E_HOME")"
          export HOME="$E2E_HOME" USERPROFILE
          BROWSE="$E2E_HOME/.codex/skills/gstack/browse/dist/browse.exe"
          [ -f "$BROWSE" ] || BROWSE="$E2E_HOME/.codex/skills/gstack/browse/dist/browse"
          test -f "$BROWSE" || (echo "MISSING: installed browse" && exit 1)
          bun -e 'Bun.serve({ hostname: "127.0.0.1", port: 47123, fetch: () => new Response("<title>gstack e2e</title><h1>gstack-windows-chain-ok</h1>", { headers: { "content-type": "text/html" } }) }); setInterval(() => {}, 1 << 30);' &
          PAGE_PID=$!
          trap 'kill "$PAGE_PID" 2>/dev/null || true; "$BROWSE" stop >/dev/null 2>&1 || true' EXIT
          UNRELATED="$RUNNER_TEMP/unrelated-dir"
          mkdir -p "$UNRELATED" && cd "$UNRELATED"
          set +e
          OUT=$(printf '%s\n' '[["goto","http://127.0.0.1:47123/"],["text"]]' | "$BROWSE" chain 2>&1)
          CODE=$?
          set -e
          echo "$OUT"
          if [ "$CODE" -ne 0 ]; then
            echo "browse chain exited $CODE; server logs:"
            find "$UNRELATED" "$E2E_HOME" -maxdepth 4 \( -name 'browse-daemon.log' -o -name 'browse-startup-error.log' \) -print -exec tail -n 60 {} \; 2>/dev/null || true
            cat "$E2E_HOME/.codex/skills/gstack/.source-path" 2>/dev/null || true
            exit 1
          fi
          echo "$OUT" | grep -q 'gstack-windows-chain-ok' || (echo "chain output lacks the page text: the flow did not run" && exit 1)
          # Empty piped input is a usage error, never a silent exit 0.
          set +e
          EMPTY_OUT=$(printf '' | "$BROWSE" chain 2>&1)
          EMPTY_CODE=$?
          set -e
          echo "$EMPTY_OUT"
          test "$EMPTY_CODE" -eq 1 || (echo "empty chain exited $EMPTY_CODE, expected 1" && exit 1)
          echo "$EMPTY_OUT" | grep -q 'no flow to run' || (echo "empty chain lacks the usage error" && exit 1)
        shell: bash