name: CI

on:
  pull_request:
    paths:
      - '*.yaml'
      - '.github/workflows/ci.yml'
  schedule:
    - cron: '0 0 * * *'

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

env:
  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: 'true'

jobs:
  discover:
    name: Discover ESPHome YAML files
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.files.outputs.matrix }}
    steps:
      - name: Checkout source code
        uses: actions/checkout@v6

      - name: Discover root-level YAML files
        id: files
        run: |
          set -euo pipefail

          mapfile -t files < <(find . -maxdepth 1 -type f -name '*.yaml' -exec basename {} .yaml \; | sort)
          if [ "${#files[@]}" -eq 0 ]; then
            echo "No root-level ESPHome YAML files found." >&2
            exit 1
          fi

          printf '%s\n' "${files[@]}"
          printf 'matrix=%s\n' "$(printf '%s\n' "${files[@]}" | jq -R -s -c 'split("\n")[:-1]')" >> "${GITHUB_OUTPUT}"

  ci:
    name: Building ${{ matrix.file }} / ${{ matrix.esphome-version }}
    runs-on: ubuntu-latest
    needs:
      - discover
    strategy:
      fail-fast: false
      max-parallel: 3
      matrix:
        file: ${{ fromJson(needs.discover.outputs.matrix) }}
        esphome-version:
          - stable
          - beta
          - dev
    steps:
      - name: Checkout source code
        uses: actions/checkout@v6

      - name: ESPHome ${{ matrix.esphome-version }}
        uses: esphome/build-action@v7.3.0
        with:
          yaml-file: ${{ matrix.file }}.yaml
          version: ${{ matrix.esphome-version }}