#!/bin/bash

apk add curl jq

[[ ! -f EXISTING ]] || touch EXISTING
EXISTING=$(cat EXISTING)
echo "Existing: ${EXISTING}"

if [[ -n $OVERWRITE ]]; then
  echo "Overwriting: $OVERWRITE"
  LATEST=$OVERWRITE
else
  INFO=$(curl https://duo.com/docs/checksums | grep 'https://dl.duosecurity.com/duoauthproxy' | grep 'src.tgz' | rev | cut -d'>' -f1 | rev)
  CHECKSUM=$(echo "$INFO" | cut -d' ' -f1)
  LATEST=$(echo "$INFO" | cut -d'-' -f2)
  PYTHON_VERSION=$(curl https://duo.com/docs/authproxy-notes | grep -Eo 'Python to \d+\.\d+\.\d+' | head -n1 | rev | cut -d' ' -f1 | rev)
  echo "Latest: ${LATEST}"
  echo "Checksum: ${CHECKSUM}"
  echo "Python Version: ${PYTHON_VERSION}"
fi

if [[ (-n "${LATEST}" && "${LATEST}" != "${EXISTING}") ]]; then
  mv build.template.yml build.yml
  sed -i "s \$CHECKSUM ${CHECKSUM} g" 'build.yml'
  sed -i "s \$LATEST ${LATEST} g" 'build.yml'
  sed -i "s \$PYTHON_VERSION ${PYTHON_VERSION} g" 'build.yml'
  echo "Building..."
fi