detect-changes.yml

name: Detect Changes
on:
  workflow_call:
    inputs:
      # Pass the caller's event name and ref so we can detect push-to-main/release.
      # Inside a reusable workflow github.event_name is always 'workflow_call',
      # so the caller must forward the real values explicitly.
      caller_event_name:
        description: 'The triggering event name from the caller (github.event_name)'
        required: true
        type: string
      caller_ref:
        description: 'The triggering ref from the caller (github.ref)'
        required: true
        type: string
    outputs:
      # Raw filter outputs — exposed for fine-grained use by callers
      ios_native:
        description: 'Whether SDK iOS native files changed'
        value: ${{ jobs.changes.outputs.ios_native }}
      android_native:
        description: 'Whether SDK Android native files changed'
        value: ${{ jobs.changes.outputs.android_native }}
      js_source:
        description: 'Whether JS/TS source files changed'
        value: ${{ jobs.changes.outputs.js_source }}
      js_test:
        description: 'Whether JS/TS test files changed'
        value: ${{ jobs.changes.outputs.js_test }}
      sample_react_native:
        description: 'Whether the React Native sample app changed'
        value: ${{ jobs.changes.outputs.sample_react_native }}
      sample_expo:
        description: 'Whether the Expo sample app changed'
        value: ${{ jobs.changes.outputs.sample_expo }}
      e2e_tests:
        description: 'Whether E2E test infrastructure changed'
        value: ${{ jobs.changes.outputs.e2e_tests }}
      perf_tests:
        description: 'Whether performance test infrastructure changed'
        value: ${{ jobs.changes.outputs.perf_tests }}
      ci:
        description: 'Whether CI workflow/action files changed'
        value: ${{ jobs.changes.outputs.ci }}
      # Convenience outputs consumed by individual workflows
      needs_ios:
        description: 'Whether iOS jobs should run (native tests, E2E, sample builds)'
        value: ${{ jobs.changes.outputs.needs_ios }}
      needs_android:
        description: 'Whether Android jobs should run (native tests, E2E, sample builds)'
        value: ${{ jobs.changes.outputs.needs_android }}
      needs_sample_react_native:
        description: 'Whether the React Native sample app workflow should run'
        value: ${{ jobs.changes.outputs.needs_sample_react_native }}
      needs_sample_expo:
        description: 'Whether the Expo sample app workflow should run'
        value: ${{ jobs.changes.outputs.needs_sample_expo }}

jobs:
  changes:
    name: Detect file changes
    runs-on: ubuntu-latest
    outputs:
      ios_native: ${{ steps.filter.outputs.ios_native }}
      android_native: ${{ steps.filter.outputs.android_native }}
      js_source: ${{ steps.filter.outputs.js_source }}
      js_test: ${{ steps.filter.outputs.js_test }}
      sample_react_native: ${{ steps.filter.outputs.sample_react_native }}
      sample_expo: ${{ steps.filter.outputs.sample_expo }}
      e2e_tests: ${{ steps.filter.outputs.e2e_tests }}
      perf_tests: ${{ steps.filter.outputs.perf_tests }}
      ci: ${{ steps.filter.outputs.ci }}
      needs_ios: ${{ steps.evaluate.outputs.needs_ios }}
      needs_android: ${{ steps.evaluate.outputs.needs_android }}
      needs_sample_react_native: ${{ steps.evaluate.outputs.needs_sample_react_native }}
      needs_sample_expo: ${{ steps.evaluate.outputs.needs_sample_expo }}
    steps:
      - uses: actions/checkout@v4

      - name: Detect changed paths
        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
        id: filter
        with:
          filters: .github/file-filters.yml

      - name: Evaluate what needs to run
        id: evaluate
        env:
          IOS_NATIVE: ${{ steps.filter.outputs.ios_native }}
          ANDROID_NATIVE: ${{ steps.filter.outputs.android_native }}
          JS_SOURCE: ${{ steps.filter.outputs.js_source }}
          SAMPLE_RN: ${{ steps.filter.outputs.sample_react_native }}
          SAMPLE_EXPO: ${{ steps.filter.outputs.sample_expo }}
          CI_CHANGED: ${{ steps.filter.outputs.ci }}
          E2E_TESTS: ${{ steps.filter.outputs.e2e_tests }}
          IS_MAIN_OR_RELEASE: ${{ inputs.caller_event_name == 'push' && (inputs.caller_ref == 'refs/heads/main' || startsWith(inputs.caller_ref, 'refs/heads/release/')) }}
        run: |
          echo "--- Change Detection Summary ---"
          echo "ios_native=$IOS_NATIVE"
          echo "android_native=$ANDROID_NATIVE"
          echo "js_source=$JS_SOURCE"
          echo "sample_react_native=$SAMPLE_RN"
          echo "sample_expo=$SAMPLE_EXPO"
          echo "ci=$CI_CHANGED"
          echo "e2e_tests=$E2E_TESTS"
          echo "is_main_or_release=$IS_MAIN_OR_RELEASE"

          # iOS/Android native test suites and E2E builds run when:
          # - The SDK's own native code changed (packages/core/ios or android)
          # - JS source changed (may affect native bridges)
          # - CI config changed (need to validate workflows themselves)
          # - E2E test infra changed (they test both platforms end-to-end)
          # - Push to main or release branch (always run everything)
          # Sample app changes do NOT trigger the full native test suite —
          # they only trigger their own sample-application workflows.
          # Performance test changes do NOT trigger native tests either —
          # they only trigger the metrics job in e2e-v2.yml.
          if [[ "$IOS_NATIVE" == "true" \
             || "$JS_SOURCE" == "true" \
             || "$CI_CHANGED" == "true" \
             || "$E2E_TESTS" == "true" \
             || "$IS_MAIN_OR_RELEASE" == "true" ]]; then
            echo "needs_ios=true" >> "$GITHUB_OUTPUT"
            echo "=> needs_ios=true"
          else
            echo "needs_ios=false" >> "$GITHUB_OUTPUT"
            echo "=> needs_ios=false"
          fi

          if [[ "$ANDROID_NATIVE" == "true" \
             || "$JS_SOURCE" == "true" \
             || "$CI_CHANGED" == "true" \
             || "$E2E_TESTS" == "true" \
             || "$IS_MAIN_OR_RELEASE" == "true" ]]; then
            echo "needs_android=true" >> "$GITHUB_OUTPUT"
            echo "=> needs_android=true"
          else
            echo "needs_android=false" >> "$GITHUB_OUTPUT"
            echo "=> needs_android=false"
          fi

          # React Native sample workflow runs when the RN sample itself changed,
          # or when anything that the sample depends on changed (SDK source, CI).
          if [[ "$SAMPLE_RN" == "true" \
             || "$JS_SOURCE" == "true" \
             || "$IOS_NATIVE" == "true" \
             || "$ANDROID_NATIVE" == "true" \
             || "$CI_CHANGED" == "true" \
             || "$IS_MAIN_OR_RELEASE" == "true" ]]; then
            echo "needs_sample_react_native=true" >> "$GITHUB_OUTPUT"
            echo "=> needs_sample_react_native=true"
          else
            echo "needs_sample_react_native=false" >> "$GITHUB_OUTPUT"
            echo "=> needs_sample_react_native=false"
          fi

          # Expo sample workflow runs when the Expo sample itself changed,
          # or when anything that the sample depends on changed (SDK source, CI).
          if [[ "$SAMPLE_EXPO" == "true" \
             || "$JS_SOURCE" == "true" \
             || "$IOS_NATIVE" == "true" \
             || "$ANDROID_NATIVE" == "true" \
             || "$CI_CHANGED" == "true" \
             || "$IS_MAIN_OR_RELEASE" == "true" ]]; then
            echo "needs_sample_expo=true" >> "$GITHUB_OUTPUT"
            echo "=> needs_sample_expo=true"
          else
            echo "needs_sample_expo=false" >> "$GITHUB_OUTPUT"
            echo "=> needs_sample_expo=false"
          fi