name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

concurrency:
  group: ci-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

env:
  HUSKY: "0"

jobs:
  pr-title:
    name: Conventional PR title
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - name: Validate title for Release Please
        env:
          PR_TITLE: ${{ github.event.pull_request.title }}
        run: >-
          node -e 'const title = process.env.PR_TITLE ?? "";
          const conventional = /^(?:feat|fix|docs|refactor|perf|test|build|ci|chore|revert)(?:\([a-z0-9._/-]+\))?!?: .+/u;
          if (!conventional.test(title)) {
            console.error("PR title must use Conventional Commits, for example: feat: add historical source import");
            process.exit(1);
          }'

  changes:
    name: Classify changes
    runs-on: ubuntu-latest
    outputs:
      code: ${{ steps.package.outputs.required }}
      package: ${{ steps.package.outputs.required }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Select package and Windows lanes
        id: package
        shell: bash
        env:
          BASE_SHA: ${{ github.event.pull_request.base.sha }}
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          if [[ "${{ github.event_name }}" != "pull_request" ]]; then
            echo "required=true" >> "${GITHUB_OUTPUT}"
          elif git diff --quiet "${BASE_SHA}" "${HEAD_SHA}" -- \
            . \
            ':(exclude)docs/**' \
            ':(exclude)AGENTS.md' \
            ':(exclude)CONTRIBUTING.md'; then
            echo "required=false" >> "${GITHUB_OUTPUT}"
          else
            echo "required=true" >> "${GITHUB_OUTPUT}"
          fi

  static:
    name: Static checks
    needs: changes
    if: ${{ always() }}
    runs-on: ubuntu-latest
    steps:
      - name: Require successful change classification
        env:
          CHANGES_RESULT: ${{ needs.changes.result }}
        run: test "${CHANGES_RESULT}" = "success"
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - if: github.event_name == 'push' || needs.changes.outputs.code == 'true'
        run: npm run check:ci
      - if: github.event_name == 'pull_request' && needs.changes.outputs.code != 'true'
        run: npm run format:check

  test-shard:
    name: Test shard (${{ matrix.shard }})
    needs: [changes, build]
    if: github.event_name == 'push' || needs.changes.outputs.code == 'true'
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        shard: [1/2, 2/2]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - uses: actions/download-artifact@v4
        with:
          name: rea-dist
          path: dist
      - run: npm run test:ci:shard:run -- --shard=${{ matrix.shard }}
      - uses: actions/upload-artifact@v4
        if: ${{ !cancelled() }}
        with:
          name: vitest-report-${{ strategy.job-index }}
          path: .vitest-reports/*
          include-hidden-files: true
          if-no-files-found: error
          overwrite: true
          retention-days: 1

  build:
    name: Build package
    needs: changes
    if: github.event_name == 'push' || needs.changes.outputs.code == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - run: npm run build:cached
      - uses: actions/upload-artifact@v4
        with:
          name: rea-dist
          path: dist
          if-no-files-found: error
          retention-days: 1

  test:
    name: Test (coverage + timing)
    needs: [changes, test-shard]
    if: ${{ always() }}
    runs-on: ubuntu-latest
    steps:
      - name: Require successful test shards
        env:
          CHANGES_RESULT: ${{ needs.changes.result }}
          CODE_REQUIRED: ${{ needs.changes.outputs.code }}
          SHARD_RESULT: ${{ needs.test-shard.result }}
        run: |
          test "${CHANGES_RESULT}" = "success"
          test "${CODE_REQUIRED}" != "true" || test "${SHARD_RESULT}" = "success"
      - uses: actions/checkout@v4
        if: needs.changes.outputs.code == 'true' && success()
      - uses: actions/setup-node@v4
        if: needs.changes.outputs.code == 'true' && success()
        with:
          node-version-file: .nvmrc
          cache: npm
      - if: needs.changes.outputs.code == 'true' && success()
        run: npm ci
      - uses: actions/download-artifact@v4
        if: needs.changes.outputs.code == 'true' && success()
        with:
          path: .vitest-reports
          pattern: vitest-report-*
          merge-multiple: true
      - if: needs.changes.outputs.code == 'true' && success()
        run: npm run test:ci:merge
      - uses: actions/upload-artifact@v4
        if: needs.changes.outputs.code == 'true' && always()
        with:
          name: test-results
          path: test-results.xml
          if-no-files-found: error
          retention-days: 30

  package-e2e:
    name: Package E2E (${{ matrix.os }})
    needs: changes
    if: github.event_name == 'push' || needs.changes.outputs.package == 'true'
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-14]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - run: npm run verify:package

  windows-curated:
    name: Windows Ghidra P0 and package lane
    needs: changes
    if: github.event_name == 'push' || needs.changes.outputs.package == 'true'
    runs-on: windows-latest
    timeout-minutes: 25
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - run: npm run build:cached
      - run: npm run typecheck
      - name: Record named Windows host capabilities
        run: node scripts/windows-capabilities.mjs | Out-File -Encoding utf8NoBOM windows-capabilities.json
      - name: Validate Windows host capability report
        run: >-
          node -e "const report = JSON.parse(require('node:fs').readFileSync('windows-capabilities.json', 'utf8'));
          if (report.platform !== 'win32' || report.architecture !== 'x64')
          throw new Error('expected a Windows x64 capability report');"
      - name: Run curated Windows P0 tests
        run: >-
          npx vitest run --coverage.enabled=false
          tests/binaryTarget.test.ts
          tests/windowsCapabilities.test.ts
          tests/ghidraWindowsFixture.test.ts
          tests/ghidraInstallation.test.ts
          tests/ghidraProvider.test.ts
          tests/ghidraTransport.test.ts
          tests/ghidraTargetSnapshot.test.ts
          tests/ghidraClient.test.ts
          tests/ghidraLauncher.test.ts
          tests/processOwnership.test.ts
          tests/realGhidraWindowsWorkflow.test.ts
      - run: npm run verify:package:windows
      - uses: actions/upload-artifact@v4
        if: always()
        with:
          name: windows-capabilities
          path: windows-capabilities.json
          retention-days: 30

  docs:
    name: Docs Generation
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
      - run: npm ci
      - run: npm run docs:check
      - uses: actions/upload-artifact@v4
        with:
          name: api-docs
          path: build/api-docs
          retention-days: 14