name: Elixir CI

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

jobs:
  build:
    name: Build and test ${{ matrix.elixir }} / OTP ${{ matrix.otp }}
    runs-on: ubuntu-24.04

    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      MIX_ENV: test

    strategy:
      fail-fast: false
      matrix:
        include:
          - elixir: "1.17"
            otp: "27"

    steps:
      - uses: actions/checkout@v5

      - name: Set up Elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{ matrix.elixir }}
          otp-version: ${{ matrix.otp }}

      - name: Restore dependency cache
        uses: actions/cache@v4
        id: deps-cache
        with:
          path: live_svelte/deps
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles('live_svelte/mix.lock') }}
          restore-keys: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-

      - name: Restore build cache
        uses: actions/cache@v4
        with:
          path: live_svelte/_build
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-build-${{ hashFiles('live_svelte/mix.lock') }}
          restore-keys: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-build-

      - name: Install dependencies
        if: steps.deps-cache.outputs.cache-hit != 'true'
        working-directory: live_svelte
        run: mix deps.get

      - name: Compile application
        working-directory: live_svelte
        run: mix compile

      - name: Run tests
        working-directory: live_svelte
        run: mix test

      - name: Run tests and coverage
        working-directory: live_svelte
        run: mix coveralls.github