#!/usr/bin/env bash

# This script helps to create a PR to update the unified Istio manifests

SCRIPT_DIRECTORY=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )

source "${SCRIPT_DIRECTORY}/library.sh"

setup_error_handling

COMPONENT_NAME="istio"

REPOSITORY_NAME="istio/istio"

COMMIT="1.30.0"

PREVIOUS_COMMIT="1.29.2"

SOURCE_DIRECTORY=${SOURCE_DIRECTORY:=/tmp/kubeflow-${COMPONENT_NAME}}

BRANCH_NAME=${BRANCH_NAME:=synchronize-${COMPONENT_NAME}-manifests-${COMMIT?}}

MANIFESTS_DIRECTORY=$(dirname $SCRIPT_DIRECTORY)

ISTIO_DIRECTORY=$MANIFESTS_DIRECTORY/common/${COMPONENT_NAME}

create_branch "$BRANCH_NAME"

mkdir -p "$SOURCE_DIRECTORY"

cd "$SOURCE_DIRECTORY"

if [ ! -d "istio-${COMMIT}" ]; then

wget "https://github.com/${REPOSITORY_NAME}/releases/download/${COMMIT}/istio-${COMMIT}-linux-amd64.tar.gz"

tar xvfz istio-${COMMIT}-linux-amd64.tar.gz

fi

ISTIOCTL="${SOURCE_DIRECTORY}/istio-${COMMIT}/bin/istioctl"

cd "$ISTIO_DIRECTORY"

sed -i "s/tag: .*/tag: $COMMIT/" "$ISTIO_DIRECTORY/profile.yaml"

$ISTIOCTL manifest generate -f profile.yaml -f profile-overlay.yaml \

--set components.cni.enabled=true \

--set components.cni.namespace=kube-system > dump.yaml

./split-istio-packages -f dump.yaml

mv $ISTIO_DIRECTORY/crd.yaml $ISTIO_DIRECTORY/istio-crds/base/

mv $ISTIO_DIRECTORY/install.yaml $ISTIO_DIRECTORY/istio-install/base/

mv $ISTIO_DIRECTORY/cluster-local-gateway.yaml $ISTIO_DIRECTORY/cluster-local-gateway/base/

rm dump.yaml

$ISTIOCTL manifest generate -f profile.yaml -f profile-overlay.yaml \

--set components.cni.enabled=true \

--set components.ztunnel.enabled=true > dump-ztunnel.yaml

./split-istio-packages -f dump-ztunnel.yaml

mv $ISTIO_DIRECTORY/ztunnel.yaml $ISTIO_DIRECTORY/istio-install/components/ambient-mode/

rm dump-ztunnel.yaml crd.yaml install.yaml cluster-local-gateway.yaml

sed -i "s/\"tag\": \".*\"/\"tag\": \"$COMMIT\"/" "$ISTIO_DIRECTORY/istio-install/base/patches/istio-sidecar-injector-patch.yaml"

# Normalize all remaining Istio version references from PREVIOUS_COMMIT to COMMIT.

# This catches any version strings that istioctl generates using the previous release

# (e.g. image tags, helm chart labels). Update PREVIOUS_COMMIT when bumping COMMIT.

find "$ISTIO_DIRECTORY" -name "*.yaml" | xargs sed -i \

-e "s/${PREVIOUS_COMMIT}/$COMMIT/g"

SOURCE_TEXT="\[.*\](https://github.com/${REPOSITORY_NAME}/releases/tag/.*)"

DESTINATION_TEXT="\[$COMMIT\](https://github.com/${REPOSITORY_NAME}/releases/tag/$COMMIT)"

update_readme "$MANIFESTS_DIRECTORY" "$SOURCE_TEXT" "$DESTINATION_TEXT"

commit_changes "$MANIFESTS_DIRECTORY" "Update ${REPOSITORY_NAME} manifests from ${COMMIT}" "$MANIFESTS_DIRECTORY"

echo "Synchronization completed successfully."