name: CI

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

env:
  # Show colored output in CI.
  CARGO_TERM_COLOR: always
  # Show full panics.
  RUST_BACKTRACE: "full"
  # Increase thread stack size to 8 megabytes.
  RUST_MIN_STACK: 8000000
  # Fail on documentation warnings.
  RUSTDOCFLAGS: '-D warnings'
  # Enable debug information generation for build dependencies.
  CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG: true

jobs:
  # Run format separately.
  #
  # This will fast-cancel other CI early if this fails.
  #
  # `cargo fmt` checks _all_ code, regardless of the OS
  # or any `#[cfg]`'s, so this only needs to run on Linux.
  fmt:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        submodules: recursive
    - name: Format
      run: cargo fmt --all --check

  # Run typo checker separately.
  # This will fast-cancel other CI early if this fails.
  typo:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v4
    - name: Spell Check
      uses: crate-ci/typos@master

  # All other CI.
  ci:
    runs-on: ${{ matrix.os }}

    strategy:
      matrix:
        os: [windows-latest, macos-latest, ubuntu-latest]
        include:
          - os: windows-latest
            shell: msys2 {0}
            # GNU Windows is used as we need
            # `unistd.h` and more in `cryptonight/`.
            rust: stable-x86_64-pc-windows-gnu
          - os: macos-latest
            shell: bash
            rust: stable
          - os: ubuntu-latest
            shell: bash
            rust: stable

    defaults:
      run:
        shell: ${{ matrix.shell }}

    steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        submodules: recursive

    - name: Install Rust
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: ${{ matrix.rust }}
        components: clippy

    - name: Cache
      uses: actions/cache@v4
      with:
        path: target
        key: ${{ matrix.os }}

    - name: Download monerod
      uses: ./.github/actions/monerod-download

    # Packages other than `Boost` used by `Monero` are listed here.
    # https://github.com/monero-project/monero/blob/c444a7e002036e834bfb4c68f04a121ce1af5825/.github/workflows/build.yml#L71

    - name: Install dependencies (Linux)
      if: matrix.os == 'ubuntu-latest'
      run: sudo apt install -y libboost-dev

    - name: Install dependencies (macOS)
      if: matrix.os == 'macos-latest'
      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install boost

    - name: Install dependencies (Windows)
      if: matrix.os == 'windows-latest'
      uses: msys2/setup-msys2@v2
      with:
        path-type: inherit
        update: true
        install: mingw-w64-x86_64-toolchain mingw-w64-x86_64-boost msys2-runtime-devel git mingw-w64-x86_64-cmake mingw-w64-x86_64-ninja

    # HACK: 2024-05-14
    # GCC 14+ fails to build `lmdb-master-sys` with no clear error message:
    # <https://github.com/Cuprate/cuprate/pull/127>
    #
    # - MSYS2 repos carry older versions of packages
    # - pacman lets us manually downgrade from package files
    # - Note that `gcc` requires `gcc-libs`
    - name: Downgrade to GCC 13.2 (Windows)
      if: matrix.os == 'windows-latest'
      run: |
        wget https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-gcc-13.2.0-6-any.pkg.tar.zst https://repo.msys2.org/mingw/mingw64/mingw-w64-x86_64-gcc-libs-13.2.0-6-any.pkg.tar.zst
        pacman -U --noconfirm mingw-w64-x86_64-gcc-13.2.0-6-any.pkg.tar.zst mingw-w64-x86_64-gcc-libs-13.2.0-6-any.pkg.tar.zst

    - name: Documentation
      run: cargo doc --workspace --all-features --no-deps

    - name: Clippy (fail on warnings)
      run: cargo clippy --workspace --all-features --all-targets -- -D warnings

    # HACK: how to test both DB backends that are feature-gated?
    - name: Test
      run: |
        cargo test --all-features --workspace
        cargo test --package cuprate-blockchain --no-default-features --features redb

    - name: Hack Check
      run: |
        cargo install cargo-hack --locked
        cargo hack --workspace check --feature-powerset --no-dev-deps

    # TODO: upload binaries with `actions/upload-artifact@v3`
    - name: Build
      run: cargo build --all-features --all-targets --workspace