#!/bin/bash
# Copyright (c) 2023 Gitpod GmbH. All rights reserved.
# Licensed under the GNU Affero General Public License (AGPL).
# See License.AGPL.txt in the project root for license information.

get_latest_migration() {
    # List all migrations and sort
    migrations=$(find ./src/typeorm/migration/*.ts | sort -n | sed 's/\.\/src\/typeorm\/migration\///g' | sed 's/\.ts//g')

    # Get the latest migration and format its name {ts}-{name} into {name}{ts}
    # To align to the generated TypeORM class name which used as migration name
    latest_migration=$(echo "$migrations" | tail -n 1 | sed 's/\([0-9]\{13\}\)-\(.*\)/\2\1/g')

    # Echo the latest migration
    echo "$latest_migration"
}

test() {
    if [ -z "$(get_latest_migration)" ]; then
        echo "Error: get_latest_migration() should not be empty" 1>&2;
        exit 1
    fi
}

if [ "$1" == "test" ]; then
    test
else
    get_latest_migration
fi