#!/usr/bin/env bash
set -euo pipefail

# Usage:
#   bash scripts/style_check.sh <markdown_file>

FILE="${1:-}"
if [[ -z "$FILE" ]]; then
  echo "Usage: bash scripts/style_check.sh <markdown_file>"
  exit 1
fi
if [[ ! -f "$FILE" ]]; then
  echo "File not found: $FILE"
  exit 1
fi

echo "Checking: $FILE"

printf "\n[1] Unnecessary bold markers (** or __):\n"
rg -n '\*\*|__' "$FILE" || echo "OK"

printf "\n[2] List lines (正文需谨慎使用):\n"
rg -n '^\s*([-*+]\s+|[0-9]+\.\s+)' "$FILE" || echo "OK"

printf "\n[3] Banned transition/emphasis phrases:\n"
rg -n '首先|其次|最后|此外|另外|接下来|值得注意的是|需要指出的是|重要的是|必须强调的是' "$FILE" || echo "OK"

printf "\n[4] Banned English transition/emphasis phrases:\n"
rg -ni 'first and foremost|to begin with|moreover|furthermore|last but not least|it is worth noting that|importantly' "$FILE" || echo "OK"

printf "\n[5] Subjective first-person phrases (论文正文慎用):\n"
rg -ni '我认为|我觉得|我个人(认为|看法)|我的研究|in my opinion|i believe' "$FILE" || echo "OK"

printf "\n[6] Consecutive non-empty lines (可能缺少段间空行，人工复核):\n"
awk '
  {
    if (NR>1) {
      prev=lines[NR-1]
      curr=$0
      if (prev !~ /^\s*$/ && curr !~ /^\s*$/ && prev !~ /^\s*```/ && curr !~ /^\s*```/ && prev !~ /^\s*[#>|-]/ && curr !~ /^\s*[#>|-]/ && prev !~ /^\s*[0-9]+\./ && curr !~ /^\s*[0-9]+\./) {
        print NR-1 ":" prev
        print NR ":" curr
        print "---"
      }
    }
    lines[NR]=$0
  }
' "$FILE" || true

printf "\nDone.\n"