name: CI

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

env:
  CARGO_TERM_COLOR: always
  # The crates that reach waku-bindings, whose build script compiles the native
  # Nim library from source.
  NO_NATIVE: >-
    --exclude chat-cli
    --exclude channel-chat
    --exclude embedded-logos-delivery
    --exclude logos-chat

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        # Not recursive: cargo has to read waku-bindings' manifest to resolve the
        # workspace even though this job never builds it, but the Nim sources
        # nested below it are only needed by its build script.
        with:
          submodules: true
      - run: rustup update stable && rustup default stable
      # hashgraph-like-consensus's build.rs shells out to protoc via prost-build.
      - run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
      # Everything reaching waku-bindings is skipped here: its build script
      # compiles the whole Nim tree, which would cost this job tens of minutes.
      # The smoketest job builds that side. logos-chat is on the list because it
      # depends on embedded-logos-delivery — chat-cli covers it there.
      - run: cargo build --verbose --workspace ${{ env.NO_NATIVE }}
      - run: cargo test --verbose --workspace ${{ env.NO_NATIVE }}

  clippy:
    name: Clippy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: true
      - run: rustup update stable && rustup default stable
      - run: rustup component add clippy
      # hashgraph-like-consensus's build.rs shells out to protoc via prost-build.
      - run: sudo apt-get update && sudo apt-get install -y protobuf-compiler
      - run: cargo clippy --all-targets --all-features --workspace ${{ env.NO_NATIVE }} -- -D warnings

  fmt:
    name: Format
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: true
      - run: rustup update stable && rustup default stable
      - run: rustup component add rustfmt
      # Not `--all`: that also formats local path dependencies, which would
      # reach into the vendored bindings and rewrite the generated sources
      # upstream deliberately keeps rustfmt away from. Scope it to the members
      # instead (rustfmt.toml's `ignore` would be the natural fix, but it is
      # nightly-only).
      - name: Check formatting of workspace members
        run: |
          pkgs=$(cargo metadata --no-deps --format-version 1 \
            | python3 -c 'import sys, json; print(" ".join("-p " + p["name"] for p in json.load(sys.stdin)["packages"]))')
          cargo fmt $pkgs -- --check

  smoketest:
    name: Smoketest
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
        with:
          # waku-bindings is a submodule, and carries the Nim sources in a
          # submodule of its own.
          submodules: recursive
      - uses: cachix/install-nix-action@v31
        with:
          nix_version: 2.34.6
          extra_nix_config: |
            experimental-features = nix-command flakes
      - uses: nix-community/cache-nix-action@v6
        with:
          primary-key: nix-${{ runner.os }}-fixtest-${{ hashFiles('flake.nix', 'flake.lock') }}
          restore-prefixes-first-match: nix-${{ runner.os }}-
      # Building liblogosdelivery compiles the whole Nim tree and takes tens of
      # minutes from cold, so it is cached on the submodule commit — the only
      # thing that changes what gets built. Without this the job is dominated by
      # a rebuild that is identical every run.
      - name: Cache the native logos-delivery build
        uses: actions/cache@v4
        with:
          path: |
            vendor/logos-delivery-rust-bindings/vendor/build
            vendor/logos-delivery-rust-bindings/vendor/nimbledeps
            vendor/logos-delivery-rust-bindings/vendor/nimcache
            vendor/logos-delivery-rust-bindings/vendor/vendor/nimbus-build-system/vendor/Nim/bin
            vendor/logos-delivery-rust-bindings/vendor/librln_*.a
            vendor/logos-delivery-rust-bindings/.submodules-initialized
            target
          key: logosdelivery-${{ runner.os }}-${{ hashFiles('.git/modules/vendor/logos-delivery-rust-bindings/HEAD') }}
          restore-keys: logosdelivery-${{ runner.os }}-
      # The dev shell supplies the Nim/C toolchain that waku-bindings' build.rs
      # shells out to, and keeps the runner on the same glibc it compiles
      # against.
      - name: Build chat-cli (logos-delivery)
        run: nix develop -c cargo build --release -p chat-cli
      - name: Run chat-cli smoketest
        # The client registers against the keypackage/account registry on
        # startup, so stand up a mock that accepts those calls. It runs on the
        # system Python (no Nix needed); only chat-cli needs the dev shell.
        #
        # This runs the default (file) transport: the job's value is proving the
        # native library builds and links. Starting a real node would make CI
        # depend on reaching the logos.dev network.
        run: |
          python3 .github/scripts/mock-registry.py &
          mock_pid=$!
          trap 'kill "$mock_pid" 2>/dev/null || true' EXIT
          for _ in $(seq 1 50); do
            curl -s -o /dev/null http://127.0.0.1:18080/ && break
            sleep 0.2
          done
          nix develop -c ./target/release/chat-cli --name ci-test --smoketest --registry-url http://127.0.0.1:18080