on:
  pull_request:
  push:
    branches:
      - main

name: CI

env:
  CROSS_VER: '0.2.5'
  CARGO_NET_RETRY: 3

permissions:
  contents: read

defaults:
  run:
    shell: bash

jobs:
  fmt:
    name: Rustfmt
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
        with:
          persist-credentials: false

      - name: Run cargo fmt
        env:
          TERM: xterm-256color
        run: |
          rustup component add rustfmt
          cargo fmt --all -- --check

  custom-checks:
    name: Custom checks
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
        with:
          persist-credentials: false

      - name: Check if `Step` enum is sorted
        run: |
          ENUM_NAME="Step"
          FILE="src/step.rs"
          awk "/enum $ENUM_NAME/,/}/" "$FILE" | \
          grep -E '^\s*[A-Za-z_][A-Za-z0-9_]*\s*,?$' | \
          sed 's/[, ]//g' > original.txt
          sort original.txt > sorted.txt
          diff original.txt sorted.txt

      - name: Check if `Step::run()`'s match is sorted
        run: |
          FILE="src/step.rs"
          awk '/[[:alpha:]] =>/{print $1}' $FILE > original.txt
          sort original.txt > sorted.txt
          diff original.txt sorted.txt

      - name: Check if `default_steps` contains every step
        run: |
          # Extract all variants from enum Step
          all_variants=$(sed -n '/^pub enum Step {/,/^}/p' src/step.rs | grep -Po '^\s*\K[A-Z][A-Za-z0-9_]*' | sort)

          # Extract variants used inside default_steps
          used_variants=$(sed -n '/^pub(crate) fn default_steps()/,/^}/p' src/step.rs | \
            grep -Po '\b[A-Z][A-Za-z0-9_]*\b' | \
            grep -Fx -f <(echo "$all_variants") | \
          sort)

          # Check for missing variants
          missing=$(comm -23 <(echo "$all_variants") <(echo "$used_variants"))
          if [[ -z "$missing" ]]; then
            echo "All variants are used."
            else
            echo "Missing variants:"
            echo "$missing"
            exit 1
          fi

          # Check for duplicates
          duplicates=$(echo "$used_variants" | uniq -c | awk '$1 > 1 {print $2}')
          if [[ -z "$duplicates" ]]; then
            echo "No duplicates found."
            else
            echo "Duplicates found:"
            echo "$duplicates"
            # We allow duplicates, but lets keep this check for potential future usefulness
            # exit 1
          fi

  main:
    needs: [ fmt, custom-checks ]
    name: ${{ matrix.target_name }} (check, clippy)
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-linux-android
            target_name: Android
            use_cross: true
            os: ubuntu-latest

          - target: x86_64-unknown-freebsd
            target_name: FreeBSD
            use_cross: true
            os: ubuntu-latest

          - target: x86_64-unknown-linux-gnu
            target_name: Linux
            os: ubuntu-latest

          - target: x86_64-apple-darwin
            target_name: macOS-x86_64
            os: macos-15-intel

          - target: aarch64-apple-darwin
            target_name: macOS-aarch64
            os: macos-latest

          - target: x86_64-unknown-netbsd
            target_name: NetBSD
            use_cross: true
            os: ubuntu-latest

          - target: x86_64-pc-windows-msvc
            target_name: Windows
            os: windows-latest
    env:
      cargo_cmd: ${{ matrix.use_cross == true && 'cross' || 'cargo' }}
      matrix_target: ${{ matrix.target }}
    steps:
      - name: Checkout code
        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
        with:
          persist-credentials: false

      - name: Setup Rust Cache
        uses: Swatinem/rust-cache@f13886b937689c021905a6b90929199931d60db1 # v2.8.1
        with:
          prefix-key: ${{ matrix.target }}

      - name: Setup cross
        if: matrix.use_cross == true
        run: |
          curl -fL --retry 3 "https://github.com/cross-rs/cross/releases/download/v${CROSS_VER}/cross-x86_64-unknown-linux-musl.tar.gz" | tar vxz -C /usr/local/bin

      - name: Run cargo/cross check
        run: |
          "${cargo_cmd}" check --locked --target "${matrix_target}"

      - name: Run cargo/cross clippy
        run: |
          rustup component add clippy
          "${cargo_cmd}" clippy --locked --target "${matrix_target}" --all-features -- -D warnings

      - name: Run cargo test
        # ONLY run test with cargo
        if: matrix.use_cross == false
        run: |
          cargo test --locked --target "${matrix_target}"