#!/bin/bash

set -euo pipefail

atom="${1}"
update_url="${2}"

echo "Fetching update manifest from ${update_url}"
update_manifest=$(mktemp)
curl --follow -s -o "${update_manifest}" "${update_url}"

latest_version=$(yq -r '.version' "${update_manifest}")
echo "Latest version: ${latest_version}"

if [[ -z "${latest_version}" ]]; then
    echo "No version tag in the downloaded manifest" >&2
    cat "${update_manifest}" >&2
    exit 1
fi

ebuild_dir="${GITHUB_WORKSPACE}/$atom"
latest_ebuild="${ebuild_dir}/yandex-music-${latest_version}.ebuild"

if [[ -f "${latest_ebuild}" ]]; then
    echo "Ebuild for version ${latest_version} already exists"
    exit 0
fi

echo "New version detected: ${latest_version}"

existing_ebuilds=( "${ebuild_dir}"/*.ebuild )
latest_existing_ebuild="${existing_ebuilds[-1]}"

if [[ -z "${latest_existing_ebuild}" ]]; then
    echo "Error: No existing ebuild found to copy from" >&2
    exit 1
fi

echo "Copying ${latest_existing_ebuild} to ${latest_ebuild}"
cp "${latest_existing_ebuild}" "${latest_ebuild}"