lint

#!/bin/bash
set -e

SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"

LINT_PATHS=(src tests ci)

# Python stages run first: they need no Rust toolchain, so a host without
# soldr/rustup/cargo-dylint still gets full Python coverage (#262).
echo "Running ruff ${LINT_PATHS[*]}"
uv run ruff check --fix "${LINT_PATHS[@]}"
echo "Running black ${LINT_PATHS[*]}"
uv run black "${LINT_PATHS[@]}"
echo "Running isort ${LINT_PATHS[*]}"
uv run isort --profile black "${LINT_PATHS[@]}"
echo "Running pyright ${LINT_PATHS[*]}"
uv run pyright "${LINT_PATHS[@]}"
echo "Running keyboard interrupt checker ${LINT_PATHS[*]}"
uv run python ci/lint_python/keyboard_interrupt_checker.py "${LINT_PATHS[@]}"

# Rust linting goes through soldr so the zccache compile cache is hit.
# Install soldr with: uv tool install soldr  (or see zackees/soldr).
if ! command -v soldr &> /dev/null; then
  echo "Error: soldr is required for Rust linting. Install with: uv tool install soldr" >&2
  exit 1
fi
echo Running cargo fmt check
soldr cargo fmt --all --check
echo Running cargo clippy
soldr cargo clippy --workspace --all-targets -- -D warnings

DYLINT_VERSION="6.0.3"
DYLINT_TOOLCHAIN="nightly-2026-03-26"
DYLINT_DIR="$SCRIPT_DIR/dylints/ban_std_pathbuf"
DYLINT_TARGET_DIR="${FASTLED_DYLINT_TARGET_DIR:-${RUNNER_TEMP:-${TMPDIR:-/tmp}}/fastled-dylint-target}"
DYLINT_LIBRARY_DIR="$DYLINT_TARGET_DIR/dylint/libraries/$DYLINT_TOOLCHAIN"

DYLINT_SKIP_REASON=""
if ! command -v cargo-dylint &> /dev/null; then
  DYLINT_SKIP_REASON="cargo-dylint $DYLINT_VERSION is not installed (soldr cargo install cargo-dylint --version $DYLINT_VERSION --locked)"
elif ! uv run python "$SCRIPT_DIR/ci/lint_python/dylint_version_checker.py" cargo-dylint "$DYLINT_VERSION"; then
  DYLINT_SKIP_REASON="cargo-dylint $DYLINT_VERSION is required (soldr cargo install cargo-dylint --version $DYLINT_VERSION --locked --force)"
elif ! command -v rustup &> /dev/null; then
  DYLINT_SKIP_REASON="rustup is required for cargo-dylint's internal driver build"
fi

if [ -n "$DYLINT_SKIP_REASON" ] && [ -n "${CI:-}" ]; then
  echo "Error: dylint prerequisites are missing in CI: $DYLINT_SKIP_REASON" >&2
  exit 1
fi

if [ -z "$DYLINT_SKIP_REASON" ]; then
  echo Running ban_std_pathbuf dylint
  RUSTUP_BIN="$(command -v rustup || true)"
  # cargo-dylint 6.x's driver toolchain check requires RUSTUP_HOME to be set
  # explicitly; CI exports it but local shells typically rely on rustup's
  # implicit default and fail with "environment variable not found: RUSTUP_HOME".
  export RUSTUP_HOME="${RUSTUP_HOME:-$("$RUSTUP_BIN" show home)}"
  RUSTUP_BIN_DIR="$(dirname "$RUSTUP_BIN")"
  DYLINT_CARGO_SHIM_DIR="$(mktemp -d)"
  DYLINT_PREVIOUS_DEFAULT="$(rustup default 2>/dev/null | sed 's/ (default)$//')"

  cleanup_dylint_toolchain() {
    rm -rf "$DYLINT_CARGO_SHIM_DIR"
    if [ -n "$DYLINT_PREVIOUS_DEFAULT" ]; then
      rustup default "$DYLINT_PREVIOUS_DEFAULT" >/dev/null || true
    fi
  }
  trap cleanup_dylint_toolchain EXIT

  cat > "$DYLINT_CARGO_SHIM_DIR/cargo" <<EOF
#!/bin/sh
exec "$RUSTUP_BIN" run "$DYLINT_TOOLCHAIN" cargo "\$@"
EOF
  chmod +x "$DYLINT_CARGO_SHIM_DIR/cargo"
  rustup default "$DYLINT_TOOLCHAIN" >/dev/null

  (
    cd "$DYLINT_DIR"
    RUSTUP_TOOLCHAIN="$DYLINT_TOOLCHAIN" CARGO_TARGET_DIR="$DYLINT_LIBRARY_DIR" soldr cargo build --release
  )

  case "$(uname -s)" in
    MINGW*|MSYS*|CYGWIN*)
      DYLINT_BUILT_LIBRARY="$(find "$DYLINT_LIBRARY_DIR" -path "*/release/ban_std_pathbuf.dll" ! -path "*/deps/*" -print -quit)"
      DYLINT_LIBRARY_NAME="ban_std_pathbuf@$DYLINT_TOOLCHAIN.dll"
      ;;
    Darwin*)
      DYLINT_BUILT_LIBRARY="$(find "$DYLINT_LIBRARY_DIR" -path "*/release/libban_std_pathbuf.dylib" ! -path "*/deps/*" -print -quit)"
      DYLINT_LIBRARY_NAME="libban_std_pathbuf@$DYLINT_TOOLCHAIN.dylib"
      ;;
    *)
      DYLINT_BUILT_LIBRARY="$(find "$DYLINT_LIBRARY_DIR" -path "*/release/libban_std_pathbuf.so" ! -path "*/deps/*" -print -quit)"
      DYLINT_LIBRARY_NAME="libban_std_pathbuf@$DYLINT_TOOLCHAIN.so"
      ;;
  esac

  if [ -z "$DYLINT_BUILT_LIBRARY" ]; then
    echo "Error: built ban_std_pathbuf dylint library was not found under $DYLINT_LIBRARY_DIR" >&2
    exit 1
  fi

  DYLINT_NAMED_LIBRARY="$DYLINT_LIBRARY_DIR/release/$DYLINT_LIBRARY_NAME"
  mkdir -p "$DYLINT_LIBRARY_DIR/release"
  cp "$DYLINT_BUILT_LIBRARY" "$DYLINT_NAMED_LIBRARY"
  # cargo-dylint builds an internal driver and intentionally unsets RUSTUP_TOOLCHAIN
  # for that nested build. Use a short-lived cargo shim plus a temporary rustup
  # default so the nested driver build uses the pinned nightly in its temp dir.
  PATH="$DYLINT_CARGO_SHIM_DIR:$RUSTUP_BIN_DIR:$PATH" RUSTUP_TOOLCHAIN="$DYLINT_TOOLCHAIN" CARGO_TARGET_DIR="$DYLINT_TARGET_DIR" \
    cargo-dylint dylint --workspace --lib-path "$DYLINT_NAMED_LIBRARY" -- --all-targets
  cleanup_dylint_toolchain
  trap - EXIT
fi

if [ -n "$DYLINT_SKIP_REASON" ]; then
  # Local hosts without the dylint prerequisites still get a green lint: every
  # other stage ran. CI never reaches here -- the guard above fails hard when
  # $CI is set, so the dylint stage cannot be silently dropped in CI (#262).
  echo "" >&2
  echo "==============================================================" >&2
  echo "dylint not run: $DYLINT_SKIP_REASON" >&2
  echo "Every other lint stage ran and passed." >&2
  echo "Install the prerequisite and re-run ./lint for full coverage." >&2
  echo "==============================================================" >&2
  echo "Linting complete (dylint skipped)!"
  exit 0
fi
echo Linting complete!
exit 0