---
name: CI

on:
  workflow_dispatch:
  push:
    branches:
      - main
  pull_request:
  

permissions:
  contents: read

# If another push to the same PR or branch happens while this workflow is still running,
# cancel the earlier run in favor of the next run.
#
# There's no point in testing an outdated version of the code. GitHub only allows
# a limited number of job runners to be active at the same time, so it's better to cancel
# pointless jobs early so that more useful jobs can run sooner.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  changes:
    runs-on: ubuntu-latest
    outputs:
      python: ${{ steps.filter.outputs.python || 'true' }}
      deps: ${{ steps.filter.outputs.deps || 'true' }}
      sdk_py: ${{ steps.filter.outputs.sdk_py || 'true' }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4
        if: github.event_name != 'workflow_dispatch'
        id: filter
        with:
          filters: |
            python:
              - 'libs/langgraph/**'
              - 'libs/sdk-py/**'
              - 'libs/cli/**'
              - 'libs/checkpoint/**'
              - 'libs/checkpoint-sqlite/**'
              - 'libs/checkpoint-postgres/**'
              - 'libs/checkpoint-conformance/**'
              - 'libs/prebuilt/**'
            deps:
              - '**/pyproject.toml'
              - '**/uv.lock'
            sdk_py:
              - 'libs/sdk-py/**'
              # The integration suite runs the local langgraph core inside the
              # server (see libs/sdk-py/integration/Dockerfile), so any core
              # change is now exercised end-to-end and should trigger it.
              - 'libs/langgraph/**'

  lint:
    needs: changes
    name: cd ${{ matrix.working-directory }}
    strategy:
      matrix:
        working-directory:
          [
            "libs/langgraph",
            "libs/sdk-py",
            "libs/cli",
            "libs/checkpoint",
            "libs/checkpoint-sqlite",
            "libs/checkpoint-postgres",
            "libs/checkpoint-conformance",
            "libs/prebuilt",
          ]
    if: needs.changes.outputs.python == 'true' || needs.changes.outputs.deps == 'true'
    uses: ./.github/workflows/_lint.yml
    with:
      working-directory: ${{ matrix.working-directory }}
    secrets: inherit

  test:
    needs: changes
    name: cd ${{ matrix.working-directory }}
    strategy:
      matrix:
        working-directory:
          [
            "libs/cli",
            "libs/checkpoint",
            "libs/checkpoint-sqlite",
            "libs/checkpoint-postgres",
            "libs/checkpoint-conformance",
            "libs/prebuilt",
            "libs/sdk-py",
          ]
    if: needs.changes.outputs.python == 'true' || needs.changes.outputs.deps == 'true'
    uses: ./.github/workflows/_test.yml
    with:
      working-directory: ${{ matrix.working-directory }}
    secrets: inherit

  # NOTE: we're testing langgraph separately because it requires a different matrix
  test-langgraph:
    needs: changes
    if: needs.changes.outputs.python == 'true' || needs.changes.outputs.deps == 'true'
    name: "cd libs/langgraph"
    uses: ./.github/workflows/_test_langgraph.yml
    secrets: inherit

  check-sdk-methods:
    needs: changes
    if: needs.changes.outputs.python == 'true'
    name: "Check SDK methods matching"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - name: Set up Python
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
        with:
          python-version: "3.11"
      - name: Run check_sdk_methods script
        run: python .github/scripts/check_sdk_methods.py

  check-schema:
    needs: changes
    if: needs.changes.outputs.python == 'true'
    name: "Check CLI schema hasn't changed #${{ matrix.python-version }}"
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version:
          - "3.13"
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - name: Set up Python ${{ matrix.python-version }}
        uses: ./.github/actions/uv_setup
        with:
          python-version: "3.13"
          cache-suffix: "schema-check-cli"
          working-directory: libs/cli
      - name: Install CLI dependencies
        run: |
          cd libs/cli
          uv sync
      - name: Generate schema and check for changes
        run: |
          cd libs/cli
          # Create a temporary copy of the current schema
          cp schemas/schema.json schemas/schema.current.json
          # Generate new schema
          uv run python generate_schema.py
          # Compare the new schema with the original
          if ! diff -q schemas/schema.json schemas/schema.current.json > /dev/null; then
            echo "Error: Langgraph.json configuration schema has changed. Please run 'uv run python generate_schema.py' in the libs/cli directory and commit the changes."
            diff schemas/schema.json schemas/schema.current.json
            exit 1
          fi
          echo "Schema check passed - no changes detected"

  integration-test:
    needs: changes
    if: needs.changes.outputs.python == 'true' || needs.changes.outputs.deps == 'true'
    name: CLI integration test
    uses: ./.github/workflows/_integration_test.yml
    secrets: inherit

  sdk-py-integration-test:
    needs: changes
    if: needs.changes.outputs.sdk_py == 'true'
    name: "sdk-py integration test"
    uses: ./.github/workflows/_sdk_integration_test.yml
    secrets: inherit

  ci_success:
    name: "CI Success"
    needs:
      [
        lint,
        test,
        test-langgraph,
        check-sdk-methods,
        check-schema,
        integration-test,
        sdk-py-integration-test,
      ]
    if: |
      always()
    runs-on: ubuntu-latest
    env:
      JOBS_JSON: ${{ toJSON(needs) }}
      RESULTS_JSON: ${{ toJSON(needs.*.result) }}
      EXIT_CODE: ${{!contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') && '0' || '1'}}
    steps:
      - name: "CI Success"
        run: |
          echo $JOBS_JSON
          echo $RESULTS_JSON
          echo "Exiting with $EXIT_CODE"
          exit $EXIT_CODE