name: CI
on:
  pull_request:
  push:
    branches:
      - master
env:
  RUST_BACKTRACE: 1

jobs:
  style:
    name: Check Style
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt

      - run: cargo fmt --all --check

  test:
    name: Test
    needs: [style]
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: -Dwarnings
    strategy:
      matrix:
        rust:
          - nightly
          - beta
          - stable
    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

      - name: Install libssl-dev
        run: sudo apt-get update && sudo apt-get install libssl-dev
      - name: Build without unstable flag
        run: cargo build

      - name: Check with unstable flag
        run: cargo check --features unstable

      - name: Run lib tests and doc tests
        run: cargo test

      - name: Run integration tests
        run: cargo test -p h2-tests

      - name: Run h2spec
        run: ./ci/h2spec.sh
        if: matrix.rust == 'stable'

  unexpected-cfgs:
    runs-on: ubuntu-latest
    needs: [style]
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@nightly
      - uses: Swatinem/rust-cache@v2
      - run: cargo check --all-features
        env:
          RUSTFLAGS: >-
            -D unexpected_cfgs
            --cfg h2_internal_check_unexpected_cfgs
            --check-cfg=cfg(h2_internal_check_unexpected_cfgs,fuzzing)

  #clippy_check:
  #  runs-on: ubuntu-latest
  #  steps:
  #    - uses: actions/checkout@v4
  #    - name: Run Clippy
  #      run: cargo clippy --all-targets --all-features

  msrv:
    name: Check MSRV
    needs: [style]

    runs-on: ubuntu-latest

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

      - name: Get MSRV from package metadata
        id: msrv
        run: grep rust-version Cargo.toml | cut -d '"' -f2 | sed 's/^/version=/' >> $GITHUB_OUTPUT

      - name: Install Rust (${{ steps.metadata.outputs.msrv }})
        id: msrv-toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ steps.msrv.outputs.version }}

      - run: cargo check -p h2

  minimal-versions:
    runs-on: ubuntu-latest
    needs: [style]
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@nightly
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-hack
      - uses: taiki-e/install-action@cargo-minimal-versions
      - run: cargo minimal-versions --ignore-private check
