#!/usr/bin/env bash
## export cloudflare dns zones

# exit if required variables are not set
set -o nounset

# check for dependencies
script_commands="docker git"
missing_counter=0
for needed_command in ${script_commands}; do
  if ! hash "${needed_command}" >/dev/null 2>&1; then
    printf "Command not found in PATH: %s\n" "${needed_command}" >&2
    ((missing_counter++))
  fi
done
if ((missing_counter > 0)); then
  printf "Minimum %d commands are missing in PATH, aborting.\n" "${missing_counter}" >&2
  exit 1
fi

# set git remote
git_remote="ssh://git/seednode/cloudflare-zones.git"

# set git branch
git_branch="master"

# set zone file directory
zone_dir="${HOME}/zones"

# create zone file directory, if it does not exist
if [ ! -d "${zone_dir}" ]; then
  mkdir -p "${zone_dir}"
fi

# if .git directory does not exist, init the repo
if [ ! -d "${zone_dir}/.git" ]; then
  git -C "${zone_dir}" init
# otherwise pull any remote changes
else
  git -C "${zone_dir}" pull "${git_remote}" "${git_branch}"
fi

# retrieve cloudflare api token
CLOUDFLARE_API_TOKEN="$(cat "${HOME}"/bin/.cloudflare_api_token.file)"

# retrieve list of zones
for DOMAIN in $( (docker run --tty --rm dpig/cloudflare-cli:latest --token "${CLOUDFLARE_API_TOKEN}" --format csv zones) | grep "active" | cut -d"," -f1); do
  (docker run --tty --rm dpig/cloudflare-cli:latest --token "${CLOUDFLARE_API_TOKEN}" --domain "${DOMAIN}" --format csv listrecords) > "${zone_dir}/${DOMAIN}.zone"
done

# add changed files
git -C "${zone_dir}" add .

# commit changes
git -C "${zone_dir}" commit -a -m "Zones changed on $(date)"

# add remote if needed
git -C "${zone_dir}" remote show origin >/dev/null 2>&1 || git -C "${zone_dir}" remote add origin "${git_remote}"

# push changes
git -C "${zone_dir}" push "${git_remote}"