#!/usr/bin/env sh

set -eu

[ -e /opt/resource/common ] && cd /opt/resource
. ./common

image_repository="$(jq -r .params.image < "$INPUT_FILE")"
if [ -z "$image_repository" ]; then
    fail "must specify param 'image'"
fi

image_refs_file="$(mktemp -t)"
oci_dir="$(mktemp -d)"
cd "$oci_dir"
tar xf "$1/$image_repository"
cd - 1>&2 2>/dev/null

crane push "$oci_dir" "$REPOSITORY:$TAG" --image-refs="$image_refs_file"
additional_tags="$(jq -r '.params.additional_tags // ""' < "$INPUT_FILE")"
if [ -n "$additional_tags" ] && [ "$additional_tags" != 'null' ]; then
    if ! [ -r "$1/$additional_tags" ]; then
        fail "cannot open file $1/$additional_tags"
    fi
    tr '[:space:]' '\n' < "$1/$additional_tags" | grep -v '^$' | while read -r tag; do
        crane tag "$REPOSITORY:@$(sed 's/^[^@]*@//' < "$image_refs_file")" "$tag"
    done
fi

filter='{
  "version": {"digest": $version}
} | tostring'
jq -r --null-input --arg version "$(sed 's/^[^@]*@//' < "$image_refs_file")" "$filter"

rm -r "$oci_dir"
rm "$image_refs_file"
rm "$INPUT_FILE"