#!/bin/bash
#
# Purpose : coredesktop-dev check: lint and test the working copy, including
#           scripts not committed yet, which CoreDesktop's make lint skips

check_usage() {
  cat << EOF
Usage: coredesktop-dev check [--fast]

Runs make lint and make test in the working copy, then shellcheck on the
scripts git doesn't track yet. --fast runs only the shellcheck steps.
EOF
}

# Print each file named on stdin (NUL-separated) that starts with a bash or sh
# shebang, as the Makefile picks them, or is a .sh file
shell_scripts() {
  local file
  while IFS= read -r -d '' file; do
    [ -f "$file" ] && [ ! -L "$file" ] || continue
    if [[ "$file" == *.sh ]] || head -n 1 "$file" | grep -qE '^#!.*[/ ](ba)?sh'; then
      echo "$file"
    fi
  done
}

cmd_check() {
  local fast=0
  case "${1:-}" in
    -h | --help) check_usage; return 0 ;;
    --fast) fast=1 ;;
    "") ;;
    *) check_usage >&2; return 1 ;;
  esac
  require_working_copy
  cd "$WORKING_COPY" || return 1

  local status=0 tracked untracked lint="ok" bats="skipped (--fast)"
  mapfile -t tracked < <(git ls-files -z | shell_scripts)
  mapfile -t untracked < <(git ls-files -z --others --exclude-standard | shell_scripts)

  echo "== make lint"
  make --no-print-directory lint || { lint="FAILED"; status=1; }

  if (( ${#untracked[@]} > 0 )); then
    echo "== shellcheck on untracked scripts: ${untracked[*]}"
    shellcheck --severity=warning "${untracked[@]}" || { lint="FAILED"; status=1; }
  fi

  if (( fast == 0 )); then
    echo "== make test"
    if make --no-print-directory test; then
      bats="ok ($(bats --count tests 2> /dev/null) tests)"
    else
      bats="FAILED"
      status=1
    fi
  fi

  echo
  echo "shellcheck: $lint (${#tracked[@]} files, ${#untracked[@]} untracked)  bats: $bats"
  return $status
}