# Cloudflare Global API Key
CFKEY="254a07bd6f3146e54c45e9a8e97aff6ea0043"

# Cloudflare 登录邮箱
CFUSER="nikaidou@shinnku.com"

# 一级域名
CFZONE_NAME="congyu.moe"

# 二级域名（只填写前缀）
CFRECORD_NAME="jp6"

# 获取当前公网 IP
IP=$(curl -s http://ipv4.icanhazip.com)

# 检查 IP 获取是否成功
if [[ -z "$IP" ]]; then
  echo "无法获取公网 IP，请检查网络连接。"
  exit 1
fi

# 获取 Zone ID
ZONE_ID=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones?name=$CFZONE_NAME" \
  -H "X-Auth-Email: $CFUSER" \
  -H "X-Auth-Key: $CFKEY" \
  -H "Content-Type: application/json" | grep -o '"id":"[^"]*"' | head -n 1 | cut -d'"' -f4)

if [[ -z "$ZONE_ID" ]]; then
  echo "获取 Zone ID 失败，请检查 API Key 和域名配置。"
  exit 1
fi

# 获取 DNS Record ID
RECORD_ID=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records?name=$CFRECORD_NAME.$CFZONE_NAME" \
  -H "X-Auth-Email: $CFUSER" \
  -H "X-Auth-Key: $CFKEY" \
  -H "Content-Type: application/json" | grep -o '"id":"[^"]*"' | head -n 1 | cut -d'"' -f4)

if [[ -z "$RECORD_ID" ]]; then
  echo "获取 DNS Record ID 失败，请检查二级域名配置。"
  exit 1
fi

# 更新 DNS 记录
UPDATE_RESPONSE=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
  -H "X-Auth-Email: $CFUSER" \
  -H "X-Auth-Key: $CFKEY" \
  -H "Content-Type: application/json" \
  --data "{\"type\":\"A\",\"name\":\"$CFRECORD_NAME.$CFZONE_NAME\",\"content\":\"$IP\",\"ttl\":120,\"proxied\":false}")

# 检查更新结果
if echo "$UPDATE_RESPONSE" | grep -q '"success":true'; then
  echo "DNS 记录更新成功：$CFRECORD_NAME.$CFZONE_NAME -> $IP"
else
  echo "DNS 记录更新失败，请检查配置。"
  echo "响应：$UPDATE_RESPONSE"
fi