#!/bin/sh

certbot_certificates_output="$(certbot certificates 2>/dev/null)"
certificates="$(echo "$certbot_certificates_output" | grep "Certificate Name:" | sed "s/.*Certificate Name: *//g")"
all_certificates=""
valid_certificates=""
invalid_certificates=""
for certificate in $certificates
do
  all_certificates="$all_certificates $certificate"
  if [ -n "$(echo "$certbot_certificates_output" | grep "Expiry Date:" | grep -E "VALID:")" ]
  then
    valid_certificates="$valid_certificates $certificate"
  else
    invalid_certificates="$invalid_certificates $certificate"
  fi
done

jsonify()
{
  if [ -z "$1" ]
  then
    echo "[]"
  else
    echo "[\"$1\"]" | sed "s/ /\", \"/g"
  fi
}

cat <<EOF
{
  "certificates": $(jsonify "$all_certificates"),
  "invalid_certificates": $(jsonify "$invalid_certificates"),
  "valid_certificates": $(jsonify "$valid_certificates")
}
EOF