#!/bin/bash

set -e

setValues() {
    sed -i "s/$1/$2/" charts/linkerd2/values.yaml
    sed -i "s/$1/$2/" charts/linkerd2-cni/values.yaml
    sed -i "s/$1/$2/" charts/linkerd2-service-mirror/values.yaml
}

showErr() {
  printf "Error on exit:\n  Exit code: %d\n  Failed command: \"%s\"\n" $? "$BASH_COMMAND"
  setValues "$fullVersion" "{version}"
}

# trap the last failed command
trap 'showErr' ERR

bindir=$( cd "${BASH_SOURCE[0]%/*}" && pwd )
rootdir=$( cd "$bindir"/.. && pwd )

"$bindir"/helm init --client-only
"$bindir"/helm lint "$rootdir"/charts/linkerd2-service-mirror
"$bindir"/helm lint "$rootdir"/charts/partials
"$bindir"/helm dep up "$rootdir"/charts/linkerd2-cni
"$bindir"/helm lint "$rootdir"/charts/linkerd2-cni
"$bindir"/helm dep up "$rootdir"/charts/linkerd2
"$bindir"/helm dep up "$rootdir"/charts/patch
"$bindir"/helm lint --set global.identityTrustAnchorsPEM="fake-trust" --set identity.issuer.tls.crtPEM="fake-cert" --set identity.issuer.tls.keyPEM="fake-key" --set identity.issuer.crtExpiry="fake-expiry-date" "$rootdir"/charts/linkerd2
"$bindir"/helm lint "$rootdir"/charts/linkerd2-cni

# `bin/helm-build package` assumes the presence of "$rootdir"/target/helm/index-pre.yaml which is downloaded in the chart_deploy CI job
if [ "$1" = package ]; then
    # shellcheck source=bin/_tag.sh
    . "$bindir"/_tag.sh
    tag=$(named_tag)
    clean_head || { echo 'There are uncommitted changes'; exit 1; }

    regex='(edge|stable)-([0-9]+\.[0-9]+\.[0-9]+)'
    if [[ ! "$tag" =~ $regex ]]; then
        echo 'Version tag is malformed'
        exit 1
    fi
    fullVersion=${BASH_REMATCH[0]}
    repo=${BASH_REMATCH[1]}
    version=${BASH_REMATCH[2]}

    # set version in Values files
    setValues "{version}" "$fullVersion"

    "$bindir"/helm --version "$version" --app-version "$tag" -d "$rootdir"/target/helm package "$rootdir"/charts/linkerd2
    "$bindir"/helm --version "$version" --app-version "$tag" -d "$rootdir"/target/helm package "$rootdir"/charts/linkerd2-cni
    # TODO: When ready to publish, uncomment
    #"$bindir"/helm --version $version --app-version $tag -d "$rootdir"/target/helm package "$rootdir"/charts/linkerd2-service-mirror
    mv "$rootdir"/target/helm/index-pre.yaml "$rootdir"/target/helm/index-pre-"$version".yaml
    "$bindir"/helm repo index --url "https://helm.linkerd.io/$repo/" --merge "$rootdir"/target/helm/index-pre-"$version".yaml "$rootdir"/target/helm

    # restore version in Values files
    setValues "$fullVersion" "{version}"
fi