name: Code Quality

# spell-checker:ignore TERMUX reactivecircus Swatinem  noaudio pkill swiftshader dtolnay juliangruber

on:
  pull_request:
  push:
    branches:
      - main

env:
  # * style job configuration
  STYLE_FAIL_ON_FAULT: true ## (bool) fail the build if a style job contains a fault (error or warning); may be overridden on a per-job basis

permissions:
  contents: read # to fetch code (actions/checkout)

# End the current execution if there is a new changeset in the PR.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:

  style_format:
    name: Style/format
    runs-on: ${{ matrix.job.os }}
    strategy:
      fail-fast: false
      matrix:
        job:
          - { os: ubuntu-latest , features: feat_os_unix }
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: stable
        components: rustfmt
    - uses: Swatinem/rust-cache@v2
    - name: Initialize workflow variables
      id: vars
      shell: bash
      run: |
        ## VARs setup
        outputs() { step_id="${{ github.action }}"; for var in "$@" ; do echo steps.${step_id}.outputs.${var}="${!var}"; echo "${var}=${!var}" >> $GITHUB_OUTPUT; done; }
        # failure mode
        unset FAIL_ON_FAULT ; case '${{ env.STYLE_FAIL_ON_FAULT }}' in
          ''|0|f|false|n|no|off) FAULT_TYPE=warning ;;
          *) FAIL_ON_FAULT=true ; FAULT_TYPE=error ;;
        esac;
        outputs FAIL_ON_FAULT FAULT_TYPE
    - name: "`cargo fmt` testing"
      shell: bash
      run: |
        ## `cargo fmt` testing
        unset fault
        fault_type="${{ steps.vars.outputs.FAULT_TYPE }}"
        fault_prefix=$(echo "$fault_type" | tr '[:lower:]' '[:upper:]')
        # * convert any errors/warnings to GHA UI annotations; ref: <https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-a-warning-message>
        S=$(cargo fmt -- --check) && printf "%s\n" "$S" || { printf "%s\n" "$S" ; printf "%s\n" "$S" | sed -E -n -e "s/^Diff[[:space:]]+in[[:space:]]+${PWD//\//\\/}\/(.*)[[:space:]]+at[[:space:]]+[^0-9]+([0-9]+).*$/::${fault_type} file=\1,line=\2::${fault_prefix}: \`cargo fmt\`: style violation (file:'\1', line:\2; use \`cargo fmt -- \"\1\"\`)/p" ; fault=true ; }
        if [ -n "${{ steps.vars.outputs.FAIL_ON_FAULT }}" ] && [ -n "$fault" ]; then exit 1 ; fi

  style_lint:
    name: Style/lint
    runs-on: ${{ matrix.job.os }}
    env:
      SCCACHE_GHA_ENABLED: "true"
      RUSTC_WRAPPER: "sccache"
    strategy:
      fail-fast: false
      matrix:
        job:
          - { os: ubuntu-latest  , features: feat_os_unix }
          - { os: macos-latest   , features: feat_os_macos }
          - { os: windows-latest , features: feat_os_windows }
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@master
      with:
        toolchain: stable
        components: clippy
    - uses: Swatinem/rust-cache@v2
    - name: Run sccache-cache
      uses: mozilla-actions/sccache-action@v0.0.6
    - name: Initialize workflow variables
      id: vars
      shell: bash
      run: |
        ## VARs setup
        outputs() { step_id="${{ github.action }}"; for var in "$@" ; do echo steps.${step_id}.outputs.${var}="${!var}"; echo "${var}=${!var}" >> $GITHUB_OUTPUT; done; }
        # failure mode
        unset FAIL_ON_FAULT ; case '${{ env.STYLE_FAIL_ON_FAULT }}' in
          ''|0|f|false|n|no|off) FAULT_TYPE=warning ;;
          *) FAIL_ON_FAULT=true ; FAULT_TYPE=error ;;
        esac;
        outputs FAIL_ON_FAULT FAULT_TYPE
    - name: "`cargo clippy` lint testing"
      uses: nick-fields/retry@v3
      with:
        max_attempts: 3
        retry_on: error
        timeout_minutes: 90
        shell: bash
        command: |
          ## `cargo clippy` lint testing
          unset fault
          CLIPPY_FLAGS="-W clippy::default_trait_access -W clippy::manual_string_new -W clippy::cognitive_complexity -W clippy::implicit_clone -W clippy::range-plus-one -W clippy::redundant-clone -W clippy::match_bool"
          fault_type="${{ steps.vars.outputs.FAULT_TYPE }}"
          fault_prefix=$(echo "$fault_type" | tr '[:lower:]' '[:upper:]')
          # * convert any warnings to GHA UI annotations; ref: <https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-a-warning-message>
          S=$(cargo clippy --all-targets --features ${{ matrix.job.features }} -pcoreutils -- ${CLIPPY_FLAGS} -D warnings 2>&1) && printf "%s\n" "$S" || { printf "%s\n" "$S" ; printf "%s" "$S" | sed -E -n -e '/^error:/{' -e "N; s/^error:[[:space:]]+(.*)\\n[[:space:]]+-->[[:space:]]+(.*):([0-9]+):([0-9]+).*$/::${fault_type} file=\2,line=\3,col=\4::${fault_prefix}: \`cargo clippy\`: \1 (file:'\2', line:\3)/p;" -e '}' ; fault=true ; }
          if [ -n "${{ steps.vars.outputs.FAIL_ON_FAULT }}" ] && [ -n "$fault" ]; then exit 1 ; fi

  style_spellcheck:
    name: Style/spelling
    runs-on: ${{ matrix.job.os }}
    strategy:
      matrix:
        job:
          - { os: ubuntu-latest , features: feat_os_unix }
    steps:
    - uses: actions/checkout@v4
    - name: Initialize workflow variables
      id: vars
      shell: bash
      run: |
        ## VARs setup
        outputs() { step_id="${{ github.action }}"; for var in "$@" ; do echo steps.${step_id}.outputs.${var}="${!var}"; echo "${var}=${!var}" >> $GITHUB_OUTPUT; done; }
        # failure mode
        unset FAIL_ON_FAULT ; case '${{ env.STYLE_FAIL_ON_FAULT }}' in
          ''|0|f|false|n|no|off) FAULT_TYPE=warning ;;
          *) FAIL_ON_FAULT=true ; FAULT_TYPE=error ;;
        esac;
        outputs FAIL_ON_FAULT FAULT_TYPE
    - name: Install/setup prerequisites
      shell: bash
      run: |
        sudo apt-get -y update ; sudo apt-get -y install npm ; sudo npm install cspell -g ;
    - name: Run `cspell`
      shell: bash
      run: |
        ## Run `cspell`
        unset fault
        fault_type="${{ steps.vars.outputs.FAULT_TYPE }}"
        fault_prefix=$(echo "$fault_type" | tr '[:lower:]' '[:upper:]')
        # * find cspell configuration ; note: avoid quotes around ${cfg_file} b/c `cspell` (v4) doesn't correctly dequote the config argument (or perhaps a subshell expansion issue?)
        cfg_files=($(shopt -s nullglob ; echo {.vscode,.}/{,.}c[sS]pell{.json,.config{.js,.cjs,.json,.yaml,.yml},.yaml,.yml} ;))
        cfg_file=${cfg_files[0]}
        unset CSPELL_CFG_OPTION ; if [ -n "$cfg_file" ]; then CSPELL_CFG_OPTION="--config $cfg_file" ; fi
        S=$(cspell ${CSPELL_CFG_OPTION} --no-summary --no-progress "**/*") && printf "%s\n" "$S" || { printf "%s\n" "$S" ; printf "%s" "$S" | sed -E -n "s/${PWD//\//\\/}\/(.*):(.*):(.*) - (.*)/::${fault_type} file=\1,line=\2,col=\3::${fault_type^^}: \4 (file:'\1', line:\2)/p" ; fault=true ; true ; }
        if [ -n "${{ steps.vars.outputs.FAIL_ON_FAULT }}" ] && [ -n "$fault" ]; then exit 1 ; fi

  toml_format:
    name: Style/toml
    runs-on: ubuntu-latest
    steps:
      - name: Clone repository
        uses: actions/checkout@v4

      - name: Check
        run: npx --yes @taplo/cli fmt --check