#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail

STRICT="${STRICT:-0}"
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

ok_count=0
warn_count=0
fail_count=0

ok() {
  printf 'OK: %s\n' "$*"
  ok_count=$((ok_count + 1))
}

warning() {
  printf 'WARNING: %s\n' "$*"
  warn_count=$((warn_count + 1))
}

critical() {
  printf 'CRITICAL: %s\n' "$*"
  fail_count=$((fail_count + 1))
}

mapfile -t bash_files < <(find "$ROOT_DIR" -path "$ROOT_DIR/.git" -prune -o -type f -name '*.sh' -print | sort)

if ((${#bash_files[@]} == 0)); then
  warning "No Bash scripts found"
else
  for file in "${bash_files[@]}"; do
    if bash -n "$file"; then
      ok "bash -n ${file#"$ROOT_DIR"/}"
    else
      critical "bash syntax failed: ${file#"$ROOT_DIR"/}"
    fi

    first_line="$(sed -n '1p' "$file")"
    if [[ "$first_line" != '#!/usr/bin/env bash' ]]; then
      warning "Non-standard shebang in ${file#"$ROOT_DIR"/}"
    fi

    if ! grep -Eq 'set -o errexit|set -euo pipefail|set -eu|set -e' "$file"; then
      warning "No errexit-style strict mode detected in ${file#"$ROOT_DIR"/}"
    fi
  done
fi

if command -v shellcheck >/dev/null 2>&1; then
  if shellcheck -x \
    -e SC1091 \
    -P "$ROOT_DIR/infra-run/scripts/bash/disk-full" \
    -P "$ROOT_DIR/infra-run/scripts/bash/gpfs" \
    -P "$ROOT_DIR/infra-run/scripts/bash/veritas" \
    "${bash_files[@]}"; then
    ok "shellcheck"
  else
    critical "shellcheck reported issues"
  fi
else
  if [[ "$STRICT" == "1" ]]; then
    critical "shellcheck not installed"
  else
    warning "shellcheck not installed; skipped optional lint"
  fi
fi

printf '\nBash summary: %d OK, %d WARNING, %d CRITICAL\n' "$ok_count" "$warn_count" "$fail_count"

if ((fail_count > 0)); then
  exit 1
fi

exit 0