#!/bin/bash
# 改管理页密码（只在设备上执行，密码不经过任何仓库文件）
set -u
D=/root/lanremote-relay
NEWPW="$1"

echo "  ── 改之前 ──"
if [ -f "$D/data/admin_password.txt" ]; then
    echo "    旧密码长度: $(wc -c < "$D/data/admin_password.txt")"
    cp "$D/data/admin_password.txt" "$D/data/admin_password.txt.bak-$(date +%H%M%S)"
    echo "    已备份"
else
    echo "    （本来没有密码文件）"
fi

mkdir -p "$D/data"
printf '%s' "$NEWPW" > "$D/data/admin_password.txt"
chmod 600 "$D/data/admin_password.txt"
echo "  ── 改之后 ──"
echo "    新密码长度: $(wc -c < "$D/data/admin_password.txt")"
ls -la "$D/data/admin_password.txt" | sed 's/^/    /'

echo
echo "  ── 确认文件里没有换行（printf 不带 \n）──"
if [ "$(wc -l < "$D/data/admin_password.txt")" = "0" ]; then
    echo "    ✓ 没有换行"
else
    echo "    ⚠ 有换行，检查一下"
fi