#!/bin/bash
# 验证 watchdog 文件完整性 + timer 正常 + 那个语法错误是什么时候的
set -u

RELAY=/root/lanremote-relay

echo "════════ 1. 文件完整性 ════════"
echo "  行数: $(wc -l < $RELAY/watchdog.sh)"
echo "  修改时间: $(stat -c '%y' $RELAY/watchdog.sh)"
echo "  md5: $(md5sum $RELAY/watchdog.sh | awk '{print $1}')"
echo "  语法: $(bash -n $RELAY/watchdog.sh 2>&1 && echo OK || echo '有错')"

echo
echo "════════ 2. 关键片段（190-200 行，之前报错的位置）════════"
sed -n '185,205p' "$RELAY/watchdog.sh" | cat -n | sed 's/^/  /'

echo
echo "════════ 3. 用 shellcheck 语义检查（如果有）════════"
if command -v shellcheck > /dev/null 2>&1; then
    shellcheck -S error "$RELAY/watchdog.sh" 2>&1 | head -20 | sed 's/^/  /'
else
    echo "  （没装 shellcheck）"
    # 退而求其次：用 bash 自己的解析器跑一遍
    bash -n "$RELAY/watchdog.sh" && echo "  bash -n 通过"
fi

echo
echo "════════ 4. timer 状态 ════════"
systemctl list-timers lanremote-watchdog.timer --no-pager 2>/dev/null | head -3 | sed 's/^/  /'
echo "  最近 3 次执行（journal）:"
journalctl -u lanremote-watchdog.service --since '30 minutes ago' --no-pager 2>/dev/null \
    | tail -8 | sed 's/^/    /'

echo
echo "════════ 5. watchdog 日志里有没有语法错误（最近）════════"
grep -n '语法错误\|unexpected\|未预期' "$RELAY/watchdog.log" 2>/dev/null | tail -5 | sed 's/^/  /' || echo "  没有"

echo
echo "════════ 6. 备份文件里哪个是坏的 ════════"
for f in $RELAY/watchdog.sh.bak.*; do
    [ -f "$f" ] || continue
    ok=$(bash -n "$f" 2>&1 && echo OK || echo BAD)
    printf "  %-60s %s\n" "$(basename "$f")" "$ok"
done

echo
echo "════════ 7. 各备份的行数和 THRESHOLD ════════"
for f in $RELAY/watchdog.sh.bak.*; do
    [ -f "$f" ] || continue
    printf "  %-58s %3s 行  %s\n" "$(basename "$f")" "$(wc -l < "$f")" \
        "$(grep -E '^THRESHOLD' "$f" | tr '\n' ' ')"
done

echo
echo "════════ 8. 现在连跑 3 次预演，确认稳定 ════════"
for i in 1 2 3; do
    out=$(DRY_RUN=1 bash "$RELAY/watchdog.sh" 2>&1)
    echo "  第 $i 次: ${out:-（无输出=正常）}"
    sleep 2
done

echo
echo "════════ 9. 长测进度 ════════"
echo "  健康样本: $(wc -l < /root/long2h_health.tsv 2>/dev/null || echo 0)"
echo "  轮询: $(wc -l < /root/rp_poll30.tsv 2>/dev/null || echo 0) / 30"
echo "  最新健康记录:"
tail -3 /root/long2h_health.tsv 2>/dev/null | sed 's/^/    /'
echo "  连接数最新:"
tail -3 /root/long2h_conns.tsv 2>/dev/null | sed 's/^/    /'