#!/usr/bin/env bash

if ! nc -zw1 api.cloudflare.com 443 &>/dev/null; then
  echo No Internet access... bailing early
  exit 0
fi

IP=$(grep -oP '^((?!fe80).).{22}ffee.{5}' /proc/net/if_inet6 | sed -E 's/(.{4})/\1:/g; s/.$//')

func () {
  RECORD="$1"
  ZONE="$2"
  PROXY="${3:-"true"}"


  REQ=$(curl --silent \
    --request GET \
    --url "https://api.cloudflare.com/client/v4/zones/$ZONE/dns_records" \
    --header 'Content-Type: application/json' \
    --header "Authorization: Bearer $AUTH"
  )

  readarray -t AR < <(jq -r '.result[].name' <<< "$REQ")

  for i in "${!AR[@]}"; do
    if [ "${AR[i]}" == "$RECORD" ]; then
      ID=$(jq -r ".result[$i].id" <<< "$REQ")
      if [ "$(jq -r ".result[$i].content" <<< "$REQ")" == "$IP" ]; then
        echo "IP was the same, returing early"
        return 0
      fi
      break
    fi
  done


  curl --silent \
    --request PATCH \
    --url "https://api.cloudflare.com/client/v4/zones/$ZONE/dns_records/$ID" \
    --header "Authorization: Bearer $AUTH" \
    --header "Content-Type: application/json" \
    --data '{
    "content": "'"$IP"'",
    "name": "'"$RECORD"'",
    "proxied": '"$PROXY"',
    "type": "AAAA",
    "comment": "",
    "tags": [],
    "ttl":  1
  }'
}

func "*.gerg-l.com" "8f76f071c5edbc0f947a5c5f9c5df9f8"
func "gerg-l.com" "8f76f071c5edbc0f947a5c5f9c5df9f8" "false"
func "ipv6.gerg-l.com" "8f76f071c5edbc0f947a5c5f9c5df9f8" "false"