name: CI

on:
  push:
    branches: [main]
    paths:
      - "**.lock"
      - "**.rs"
      - "**.nix"
      - "Cargo.toml"
      - ".github/workflows/ci.yaml"
  pull_request:
    paths:
      - "**.lock"
      - "**.rs"
      - "**.nix"
      - "Cargo.toml"
      - ".github/workflows/ci.yaml"
  workflow_dispatch:

jobs:
  build:
    name: Build

    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest]

    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v31

      - name: Run build
        run: |
          nix build --print-build-logs .#nix-forecast-debug

  format-and-lint:
    name: Format and lint

    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v31

      - name: Run flake checks
        run: |
          nix flake check --print-build-logs --show-trace

  release-gate:
    name: CI Release gate
    needs: [build, format-and-lint]

    if: ${{ always() }}

    runs-on: ubuntu-latest

    steps:
      - name: Exit with error
        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
        run: exit 1