ci.yml

name: CI

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

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  setup:
    name: asdf and Elixir dependencies
    timeout-minutes: 30
    runs-on: ubuntu-latest
    outputs:
      cache-key-asdf: ${{ steps.cache-keys.outputs.asdf }}
      cache-key-mix: ${{ steps.cache-keys.outputs.mix }}
    steps:
      - uses: actions/checkout@v4
      - name: Set cache keys
        id: cache-keys
        run: |
          echo "asdf-restore=cache-asdf-" >> $GITHUB_OUTPUT
          echo "asdf=cache-asdf-${{ hashFiles('.tool-versions') }}" >> $GITHUB_OUTPUT
          echo "mix-restore=cache-mix-" >> $GITHUB_OUTPUT
          echo "mix=cache-mix-${{ hashFiles('**/mix.lock', '.tool-versions') }}" >> $GITHUB_OUTPUT
      - name: asdf cache
        uses: actions/cache@v4
        with:
          path: ~/.asdf
          key: ${{ steps.cache-keys.outputs.asdf }}
          restore-keys: ${{ steps.cache-keys.outputs.asdf-restore }}
        id: asdf-cache
      - uses: asdf-vm/actions/install@v3
        if: steps.asdf-cache.outputs.cache-hit != 'true'
      - name: Setup asdf environment
        uses: mbta/actions/reshim-asdf@v2
      - name: mix rebar and hex
        run: |
          mix local.rebar --force
          mix local.hex --force
        if: steps.asdf-cache.outputs.cache-hit != 'true'
      - name: Mix cache
        id: deps-cache
        uses: actions/cache@v4
        with:
          path: |
            deps
            _build
          key: ${{ steps.cache-keys.outputs.mix }}
          restore-keys: ${{ steps.cache-keys.outputs.mix-restore }}
      - name: Install and compile Mix dependencies
        if: steps.deps-cache.outputs.cache-hit != 'true'
        run: |
          mix deps.get
          mix deps.compile
          MIX_ENV=test mix deps.compile

  build_elixir:
    name: Build and test Elixir
    timeout-minutes: 30
    runs-on: ubuntu-latest
    needs: setup
    steps:
      - name: asdf cache
        uses: actions/cache/restore@v4
        with:
          path: ~/.asdf
          key: ${{ needs.setup.outputs.cache-key-asdf }}
      - name: Setup asdf environment
        uses: mbta/actions/reshim-asdf@v2
      - uses: actions/checkout@v4
      - name: Restore Mix cache
        uses: actions/cache/restore@v4
        with:
          path: |
            deps
            _build
          key: ${{ needs.setup.outputs.cache-key-mix }}
      - name: Compile (warnings as errors)
        run: mix compile --force --warnings-as-errors
      - name: Credo
        run: mix credo --strict
      - name: Check formatting
        run: mix format --check-formatted
      - name: Run tests
        run: mix test --cover
      - name: Report test coverage
        # Disabled due to dependency issues
        if: false
        uses: mbta/github-actions-report-lcov@v1
        with:
          coverage-files: cover/lcov.info
          artifact-name: code-coverage-report
          github-token: ${{ secrets.GITHUB_TOKEN }}
      - uses: mbta/actions/dialyzer@v2
      - name: Check for unused dependencies
        run: mix deps.unlock --check-unused

  docker_build:
    name: Check that the Docker container will build and run
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: docker build
        uses: docker/build-push-action@v6
        with:
          context: .
          push: false
          load: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
      - name: docker compose build
        run: docker compose build
      - name: docker compose up
        run: docker compose up --wait
        env:
          API_KEY: ${{secrets.API_KEY}}
          API_URL: ${{secrets.API_URL}}
      - name: ensure running properly
        run: docker compose exec --no-TTY mobile-app-backend wget --spider -S http://localhost:4000/
      - name: show docker container logs
        run: docker compose logs mobile-app-backend
        if: ${{ !cancelled() }}

  load_test:
    name: Check Python load tests for basic validity
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Read asdf versions
        id: asdf
        run: cat load_testing/.tool-versions | sed 's/ /=/' | tee -a "$GITHUB_OUTPUT"
      - name: Install poetry
        run: pipx install poetry==${{steps.asdf.outputs.poetry}}
      - uses: actions/setup-python@v5
        with:
          python-version: ${{steps.asdf.outputs.python}}
          cache: poetry
          cache-dependency-path: load_testing/poetry.lock
      - run: cd load_testing && poetry install
      - run: cd load_testing && poetry run ruff check
      - run: cd load_testing && poetry run mypy locustfile.py