#!/bin/bash

# Script to update AEMM and Helm chart versions.
# The following files are updated:
## - helm charts' Chart.yaml
## - helm charts' values.yaml
## - helm charts' README
## - README.md
## - version.txt

# This script is run AFTER creating a new local tag (see `make release-prep`).

set -euo pipefail

REPO_ROOT_PATH="$( cd "$(dirname "$0")"; cd ../; pwd -P )"
MAKEFILE_PATH=$REPO_ROOT_PATH/Makefile
LATEST_VERSION=$(make -s -f $MAKEFILE_PATH latest-release-tag | cut -b 2- )
PREVIOUS_VERSION=$(make -s -f $MAKEFILE_PATH previous-release-tag | cut -b 2- )

# Files to update
REPO_README=$REPO_ROOT_PATH/README.md
APP_VERSION=$REPO_ROOT_PATH/pkg/cmd/root/version.txt
CHART=$REPO_ROOT_PATH/helm/amazon-ec2-metadata-mock/Chart.yaml
CHART_VALUES=$REPO_ROOT_PATH/helm/amazon-ec2-metadata-mock/values.yaml
CHART_README=$REPO_ROOT_PATH/helm/amazon-ec2-metadata-mock/README.md

FILES=("$REPO_README"  "$CHART"  "$CHART_README"  "$CHART_VALUES" "$APP_VERSION")
FILES_CHANGED=()

echo -e "🥑 Attempting to update AEMM release version and Helm chart version in preparation for a new release.\n   Previous version: $PREVIOUS_VERSION ---> Latest version: $LATEST_VERSION"

for f in "${FILES[@]}"; do
    has_incorrect_version=$(cat $f | grep $PREVIOUS_VERSION)
    if [[ ! -z  $has_incorrect_version ]]; then
        sed -i '' "s/$PREVIOUS_VERSION/$LATEST_VERSION/g" $f
        FILES_CHANGED+=("$f")
    fi
done

if [[ ${#FILES_CHANGED[@]} -gt 0 ]]; then
    echo -e "\n✅ Updated versions from $PREVIOUS_VERSION to $LATEST_VERSION in files: \n$(echo "${FILES_CHANGED[@]}" | tr ' ' '\n')"
    echo -e "\n🥑 To see changes, run \`git diff ${FILES_CHANGED[*]}\`"
else
    echo -e "\n✅ All files already use the latest release version $LATEST_VERSION. No files were modified."
fi