#!/bin/bash

while getopts n:r:c: flag
do
    case "${flag}" in
        n) namespace=${OPTARG};;
        r) release=${OPTARG};;
    esac
done

if [ -z ${release+x} ] || [ -z ${namespace+x} ]; then echo "namespace and release must be defined"; exit 0; fi

echo "Get release object"
releaseObject=$(kubectl get secret -l owner=helm,status=deployed,name=$release --namespace $namespace | awk '{print $1}' | grep -v NAME)

echo "Export secret to $release.release.yaml"
kubectl get secret $releaseObject -n $namespace -o yaml > $release.release.yaml

echo "Create backup"
cp $release.release.yaml $release.release.bak

echo "Decode"
cat $release.release.yaml | grep -oP '(?<=release: ).*' | base64 -d | base64 -d | gzip -d > $release.release.data.decoded

echo "Replace api"
sed -i -e 's/extensions\/v1beta1/networking.k8s.io\/v1/' $release.release.data.decoded
sed -i -e 's/networking.k8s.io\/v1beta1/networking.k8s.io\/v1/' $release.release.data.decoded

echo "Encode"
cat $release.release.data.decoded | gzip | base64 | base64 > $release.release.data.encoded

echo "Remove newlines"
tr -d "\n" < $release.release.data.encoded > $release.release.data.encoded.final
releaseData=$(cat $release.release.data.encoded.final)

echo "Replace data.release"
sed 's/^\(\s*release\s*:\s*\).*/\1'$releaseData'/' $release.release.yaml > $release.final.release.yaml

echo "Applying to kubernetes"
kubectl apply -f $release.final.release.yaml -n $namespace

rm $release.release.yaml
rm $release.release.data.decoded
rm $release.release.data.encoded
rm $release.release.data.encoded.final
rm $release.final.release.yaml