/*
 * Copyright 2023 - 2024 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.autoconfigure.openai.tool;

import static org.assertj.core.api.Assertions.assertThat;

import java.util.function.Function;
import java.util.stream.Collectors;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.ai.autoconfigure.openai.OpenAiAutoConfiguration;
import org.springframework.ai.chat.client.ChatClient;
import org.springframework.ai.openai.OpenAiChatModel;
import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;

@EnabledIfEnvironmentVariable(named = "OPENAI_API_KEY", matches = ".*")
public class FunctionCallbackInPrompt2IT {

	private final Logger logger = LoggerFactory.getLogger(FunctionCallbackInPromptIT.class);

	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
		.withPropertyValues("spring.ai.openai.apiKey=" + System.getenv("OPENAI_API_KEY"))
		.withConfiguration(AutoConfigurations.of(OpenAiAutoConfiguration.class));

	@Test
	void functionCallTest() {
		contextRunner.withPropertyValues("spring.ai.openai.chat.options.model=gpt-4o").run(context -> {

			OpenAiChatModel chatModel = context.getBean(OpenAiChatModel.class);

			ChatClient chatClient = ChatClient.builder(chatModel).build();

			// @formatter:off
			chatClient.prompt()
					.user("Tell me a joke?")
					.call().content();

			String content = ChatClient.builder(chatModel).build().prompt()
					.user("What's the weather like in San Francisco, Tokyo, and Paris?")
					.function("CurrentWeatherService", "Get the weather in location", new MockWeatherService())
					.call().content();
			// @formatter:on

			logger.info("Response: {}", content);

			assertThat(content).containsAnyOf("30.0", "30");
			assertThat(content).containsAnyOf("10.0", "10");
			assertThat(content).containsAnyOf("15.0", "15");
		});
	}

	@Test
	void functionCallTest2() {
		contextRunner.withPropertyValues("spring.ai.openai.chat.options.model=gpt-4o").run(context -> {

			OpenAiChatModel chatModel = context.getBean(OpenAiChatModel.class);

			// @formatter:off
			String content = ChatClient.builder(chatModel).build().prompt()
					.user("What's the weather like in Amsterdam?")
					.function("CurrentWeatherService", "Get the weather in location",
							new Function<MockWeatherService.Request, String>() {
								@Override
								public String apply(MockWeatherService.Request request) {
									return "18 degrees Celsius";
								}
							})
					.call().content();
			// @formatter:on
			logger.info("Response: {}", content);

			assertThat(content).contains("18");
		});
	}

	@Test
	void streamingFunctionCallTest() {

		contextRunner.withPropertyValues("spring.ai.openai.chat.options.model=gpt-4o").run(context -> {

			OpenAiChatModel chatModel = context.getBean(OpenAiChatModel.class);

			// @formatter:off
			String content = ChatClient.builder(chatModel).build().prompt()
					.user("What's the weather like in San Francisco, Tokyo, and Paris?")
					.function("CurrentWeatherService", "Get the weather in location", new MockWeatherService())
					.stream().content()
					.collectList().block().stream().collect(Collectors.joining());
			// @formatter:on

			logger.info("Response: {}", content);

			assertThat(content).containsAnyOf("30.0", "30");
			assertThat(content).containsAnyOf("10.0", "10");
			assertThat(content).containsAnyOf("15.0", "15");
		});
	}

}