name: Python Checks
concurrency:
  group: Python-Checks-${{ github.workflow }}-${{ github.head_ref || github.event.workflow_run.head_branch || github.run_id }}
  cancel-in-progress: true

on:
  merge_group:
  pull_request:
    branches:
      - main
      - 'release/**'
  push:
    tags:
      - "v*.*.*"

permissions:
  contents: read

jobs:
  mypy-check:
    # See https://runs-on.com/runners/linux/
    # Note: Mypy seems quite optimized for x64 compared to arm64.
    # Similarly, mypy is single-threaded and incremental, so 2cpu is sufficient.
    runs-on: [runs-on, runner=2cpu-linux-x64, "run-id=${{ github.run_id }}-mypy-check", "extras=s3-cache"]
    timeout-minutes: 45

    steps:
      - uses: runs-on/action@cd2b598b0515d39d78c38a02d529db87d2196d1e # ratchet:runs-on/action@v2
      - name: Checkout code
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # ratchet:actions/checkout@v6
        with:
          persist-credentials: false

      - name: Setup Python and Install Dependencies
        uses: ./.github/actions/setup-python-and-install-dependencies
        with:
          requirements: |
            backend/requirements/default.txt
            backend/requirements/dev.txt
            backend/requirements/model_server.txt
            backend/requirements/ee.txt

      - name: Generate OpenAPI schema and Python client
        shell: bash
        run: |
          ods openapi all

      - name: Cache mypy cache
        if: ${{ vars.DISABLE_MYPY_CACHE != 'true' }}
        uses: runs-on/cache@50350ad4242587b6c8c2baa2e740b1bc11285ff4 # ratchet:runs-on/cache@v4
        with:
          path: backend/.mypy_cache
          key: mypy-${{ runner.os }}-${{ hashFiles('**/*.py', '**/*.pyi', 'backend/pyproject.toml') }}
          restore-keys: |
            mypy-${{ runner.os }}-

      - name: Run MyPy
        working-directory: ./backend
        env:
          MYPY_FORCE_COLOR: 1
          TERM: xterm-256color
        run: mypy .

      - name: Run MyPy (tools/)
        env:
          MYPY_FORCE_COLOR: 1
          TERM: xterm-256color
        run: mypy tools/