name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  schedule:
    - cron: "0 0 * * *" # Every night at midnight UTC

env:
  CARGO_TERM_COLOR: always

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: rustup update stable && rustup default stable
      # chat-cli's build.rs unconditionally links liblogosdelivery and requires
      # LOGOS_DELIVERY_LIB_DIR. The smoketest job builds and exercises it under
      # Nix; here we keep the toolchain-only job fast by skipping it.
      - run: cargo build --verbose --workspace --exclude chat-cli
      - run: cargo test --verbose --workspace --exclude chat-cli

  clippy:
    name: Clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: rustup update stable && rustup default stable
      - run: rustup component add clippy
      - run: cargo clippy --all-targets --all-features --workspace --exclude chat-cli -- -D warnings

  fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: rustup update stable && rustup default stable
      - run: rustup component add rustfmt
      - run: cargo fmt --all -- --check

  smoketest:
    name: Smoketest
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - uses: cachix/install-nix-action@v31
        with:
          nix_version: 2.34.6
          extra_nix_config: |
            experimental-features = nix-command flakes
      - uses: nix-community/cache-nix-action@v6
        with:
          primary-key: nix-${{ runner.os }}-fixtest-${{ hashFiles('flake.nix', 'flake.lock') }}
          restore-prefixes-first-match: nix-${{ runner.os }}-
      - name: Build logos-delivery
        # Build through a patched nixpkgs (kaichaosun/nixpkgs fix-gitfetch),
        # whose nix-prefetch-git disables git background auto-maintenance so the
        # nim-zlib submodule fetch no longer races `.git` removal. The override
        # flows into logos-delivery via its `nixpkgs.follows`. The bumped cache
        # key (`-fixtest-`) forces a cold store, so this genuinely re-fetches
        # nim-zlib instead of reusing a cached output. No retry on purpose: a
        # single build must now succeed deterministically. Re-run the job a few
        # times for more samples.
        run: nix build .#logos-delivery --override-input nixpkgs github:kaichaosun/nixpkgs/fix-gitfetch --print-build-logs
      # Build and run chat-cli through the dev shell so it links against the
      # same Nix glibc as the prebuilt liblogosdelivery.so. A plain `cargo
      # build` uses the runner's system glibc, which is older than Nix's and
      # mismatches it at runtime (libc.so.6: version `GLIBC_ABI_DT_X86_64_PLT'
      # not found, required by Nix glibc's libm.so.6).
      - name: Build chat-cli (logos-delivery)
        run: nix develop -c bash -c 'LOGOS_DELIVERY_LIB_DIR=./result/lib cargo build --release -p chat-cli'
      - name: Run chat-cli smoketest
        run: nix develop -c ./target/release/chat-cli --name ci-test --smoketest