/*
 * Copyright 2023-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.ai.template;

import java.util.Map;

import org.springframework.util.Assert;

/**
 * No-op implementation of {@link TemplateRenderer} that returns the template unchanged.
 *
 * @author Thomas Vitale
 * @since 1.0.0
 */
public class NoOpTemplateRenderer implements TemplateRenderer {

	@Override
	public String apply(String template, Map<String, Object> variables) {
		Assert.hasText(template, "template cannot be null or empty");
		Assert.notNull(variables, "variables cannot be null");
		Assert.noNullElements(variables.keySet(), "variables keys cannot be null");
		return template;
	}

}
