#!/bin/bash

# 自动获取本机的公网 IPv4 地址
NEW_IP=$(curl -s4 ifconfig.me)

# 腾讯云信息
SECRET_ID="your_secret_id"        # 腾讯云 SecretId
SECRET_KEY="your_secret_key"      # 腾讯云 SecretKey
DOMAIN="giraff.fun"               # 主域名

# 子域名和记录类型
SUB_DOMAIN="*"                    # 子域名
RECORD_TYPE="A"                   # 记录类型
RECORD_LINE="default"             # 线路类型

# 获取腾讯云的 DomainId（通过 DescribeDomains API 查询）
response=$(curl -s -X GET "https://cns.api.qcloud.com/v2/index.php" \
  -d "Action=DescribeDomains" \
  -d "Region=ap-guangzhou" \
  -d "SecretId=${SECRET_ID}" \
  -d "SecretKey=${SECRET_KEY}")

# 解析 DomainId
DOMAIN_ID=$(echo "$response" | jq -r ".Domains.Domain[] | select(.DomainName==\"${DOMAIN}\") | .DomainId")

# 检查是否成功获取 DomainId
if [ -z "$DOMAIN_ID" ]; then
  echo "未能找到域名 ${DOMAIN} 的 DomainId，请检查域名是否正确。"
  exit 1
fi

echo "获取的 DomainId 为: $DOMAIN_ID"

# 确认 NEW_IP 已成功获取
if [ -z "$NEW_IP" ]; then
  echo "无法获取本机公网 IPv4，请检查网络连接。"
  exit 1
fi

echo "本机公网 IPv4 为: $NEW_IP"

# 获取解析记录列表
response=$(curl -s -X GET "https://cns.api.qcloud.com/v2/index.php" \
  -d "Action=DescribeRecordList" \
  -d "Region=ap-guangzhou" \
  -d "DomainId=${DOMAIN_ID}" \
  -d "SubDomain=${SUB_DOMAIN}" \
  -d "RecordType=${RECORD_TYPE}" \
  -d "SecretId=${SECRET_ID}" \
  -d "SecretKey=${SECRET_KEY}")

# 使用 jq 解析获取的 Record ID
RECORD_ID=$(echo "$response" | jq -r '.RecordList[0].RecordId')

if [ -z "$RECORD_ID" ] || [ "$RECORD_ID" == "null" ]; then
  echo "记录不存在，创建新解析记录..."

  # 调用 CreateRecord API 创建新解析记录
  create_response=$(curl -s -X GET "https://cns.api.qcloud.com/v2/index.php" \
    -d "Action=CreateRecord" \
    -d "Region=ap-guangzhou" \
    -d "DomainId=${DOMAIN_ID}" \
    -d "SubDomain=${SUB_DOMAIN}" \
    -d "RecordType=${RECORD_TYPE}" \
    -d "RecordLine=${RECORD_LINE}" \
    -d "Value=${NEW_IP}" \
    -d "SecretId=${SECRET_ID}" \
    -d "SecretKey=${SECRET_KEY}")

  # 解析创建响应
  create_status_code=$(echo "$create_response" | jq -r '.status.code')
  create_status_message=$(echo "$create_response" | jq -r '.status.message')

  # 判断是否创建成功
  if [ "$create_status_code" == "1" ]; then
    echo "DNS 记录创建成功: $create_status_message"
  else
    echo "DNS 记录创建失败: $create_status_message"
  fi
else
  echo "记录已存在，更新解析记录..."

  # 发送 POST 请求更新 DNS 记录
  update_response=$(curl -s -X GET "https://cns.api.qcloud.com/v2/index.php" \
    -d "Action=ModifyRecord" \
    -d "Region=ap-guangzhou" \
    -d "DomainId=${DOMAIN_ID}" \
    -d "RecordId=${RECORD_ID}" \
    -d "SubDomain=${SUB_DOMAIN}" \
    -d "RecordType=${RECORD_TYPE}" \
    -d "RecordLine=${RECORD_LINE}" \
    -d "Value=${NEW_IP}" \
    -d "SecretId=${SECRET_ID}" \
    -d "SecretKey=${SECRET_KEY}")

  # 解析响应
  update_status_code=$(echo "$update_response" | jq -r '.status.code')
  update_status_message=$(echo "$update_response" | jq -r '.status.message')

  # 判断是否更新成功
  if [ "$update_status_code" == "1" ]; then
    echo "DNS 记录更新成功: $update_status_message"
  else
    echo "DNS 记录更新失败: $update_status_message"
  fi
fi