001/*
002 * SPDX-License-Identifier: Apache-2.0
003 *
004 * Copyright 2025-2026 The Enola <https://enola.dev> Authors
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *     https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package dev.enola.ai.langchain4j;
019
020import dev.enola.ai.iri.MockModelProvider;
021import dev.langchain4j.data.message.AiMessage;
022import dev.langchain4j.model.chat.StreamingChatModel;
023import dev.langchain4j.model.chat.request.ChatRequest;
024import dev.langchain4j.model.chat.response.ChatResponse;
025import dev.langchain4j.model.chat.response.StreamingChatResponseHandler;
026import dev.langchain4j.model.output.FinishReason;
027
028import java.io.UncheckedIOException;
029import java.net.URI;
030import java.util.Optional;
031
032public class MockChatModel implements StreamingChatModel {
033
034    private final String reply;
035
036    public MockChatModel(String reply) {
037        this.reply = reply;
038    }
039
040    @Override
041    public void doChat(ChatRequest chatRequest, StreamingChatResponseHandler handler) {
042        handler.onCompleteResponse(
043                ChatResponse.builder()
044                        .aiMessage(AiMessage.builder().text(reply).build())
045                        .finishReason(FinishReason.STOP)
046                        .build());
047    }
048
049    public static class Provider extends MockModelProvider<StreamingChatModel> // skipcq: JAVA-E0169
050            implements ChatModelProvider { // skipcq: JAVA-E0169
051
052        @Override
053        public Optional<StreamingChatModel> optional(URI uri)
054                throws IllegalArgumentException, UncheckedIOException {
055            if (SCHEME.equalsIgnoreCase(uri.getScheme())) {
056                var reply = uri.getSchemeSpecificPart();
057                return Optional.of(new MockChatModel(reply));
058            } else return Optional.empty();
059        }
060    }
061}