ci.yml

name: Continuous Integration

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

jobs:
  test:
    name: Build and test
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:13
        env:
          POSTGRES_PASSWORD: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - uses: actions/checkout@v3
      - name: Set up Elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: "1.17.2"
          otp-version: "26"

      - name: Restore dependencies cache
        uses: actions/cache@v3
        with:
          path: deps
          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
          restore-keys: ${{ runner.os }}-mix-

      - name: Install dependencies
        run: mix deps.get

      - name: Run tests
        run: mix test
        env:
          MIX_ENV: test

      - name: Run test coverage
        run: mix coveralls.json
        env:
          MIX_ENV: test

      - name: Upload coverage report
        uses: actions/upload-artifact@v3
        with:
          name: coverage-report
          path: cover/excoveralls.json

      - name: Check formatting
        run: mix format --check-formatted

      - name: Run Credo
        run: mix credo --ignore todo,aliasusage

      - name: Check for security vulnerabilities
        run: mix sobelow --config

      - name: Install rust
        uses: Swatinem/rust-cache@v2
        with:
          shared-key: "cache"
          save-if: false

      - name: Setup db
        run: MIX_ENV=test mix ecto.setup

      - name: Integration tests
        run: |-
          cd integration-tests
          touch .env
          cargo run &
          BTCD_AND_LND_SERVERS_PID=$!
          # Wait until the nodes are running by checking if the the env var are exported
          while [[ -z "${LND_URL}" ]]; do sleep 5 && source .env; done
          cd ..
          # mix doesn't behave when run in background, so we use `erlang -detached` instead
          # but the `$!` thing won't work coz the app is run in another thread,
          # so we write the actual pid in a file and later read it to kill it 
          elixir --erl "-detached" -e "File.write! 'pid', :os.getpid" -S mix phx.server
          cd integration-tests
          # Wait until the mix is finished compiling
          until curl http://localhost:4000; do sleep 5; done;
          cargo test
          cat ../pid | xargs kill
          kill $BTCD_AND_LND_SERVERS_PID