name: Compile All

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

jobs:
  compile:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@main

      - name: Setup secrets
        run: |
          cp secrets.yaml.sample secrets.yaml
          cp templates/secrets.yaml.sample templates/secrets.yaml

      - name: Cache PlatformIO packages
        uses: actions/cache@v4
        with:
          path: ~/.platformio
          # Keyed on ESPHome version + YAML configs; bust when deps change
          key: platformio-${{ hashFiles('flake.lock', '*.yaml', 'templates/*.yaml') }}
          restore-keys: platformio-

      - name: Cache ESPHome build artifacts
        uses: actions/cache@v4
        with:
          path: .esphome
          key: esphome-${{ hashFiles('*.yaml', 'templates/*.yaml', 'components/**') }}
          restore-keys: esphome-

      # Uses the ci shell, which installs esphome via pipx at the exact version
      # pinned in Nix. The ci shell avoids nixpkgs wrapping platformio in bwrap,
      # which fails on CI runners that disallow unprivileged user namespaces.
      - name: Compile All
        run: nix develop .#ci --command make compile-all