182 lines
9.1 KiB
Java
182 lines
9.1 KiB
Java
/*
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* Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose.
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* Your use of it is subject to your agreement with Google.
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*/
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package com.example.service.quickreplies;
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import com.example.dto.dialogflow.base.DetectIntentResponseDTO;
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import com.example.dto.dialogflow.conversation.*;
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import com.example.dto.quickreplies.QuickReplyScreenRequestDTO;
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import com.example.dto.quickreplies.QuestionDTO;
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import com.example.dto.quickreplies.QuickReplyDTO;
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import com.example.mapper.conversation.ConversationEntryMapper;
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import com.example.service.conversation.FirestoreConversationService;
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import com.example.service.conversation.MemoryStoreConversationService;
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import com.example.util.SessionIdGenerator;
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import java.time.Instant;
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import java.util.Collections;
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import java.util.List;
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import java.util.stream.IntStream;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Service;
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import com.example.dto.dialogflow.conversation.QueryResultDTO;
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import com.example.service.conversation.ConversationManagerService;
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import org.springframework.context.annotation.Lazy;
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import reactor.core.publisher.Mono;
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@Service
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public class QuickRepliesManagerService {
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private static final Logger logger = LoggerFactory.getLogger(QuickRepliesManagerService.class);
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private final MemoryStoreConversationService memoryStoreConversationService;
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private final FirestoreConversationService firestoreConversationService;
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private final QuickReplyContentService quickReplyContentService;
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private final ConversationManagerService conversationManagerService;
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private final ConversationEntryMapper conversationEntryMapper;
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public QuickRepliesManagerService(
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@Lazy ConversationManagerService conversationManagerService,
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MemoryStoreConversationService memoryStoreConversationService,
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FirestoreConversationService firestoreConversationService,
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QuickReplyContentService quickReplyContentService,
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ConversationEntryMapper conversationEntryMapper) {
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this.conversationManagerService = conversationManagerService;
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this.memoryStoreConversationService = memoryStoreConversationService;
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this.firestoreConversationService = firestoreConversationService;
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this.quickReplyContentService = quickReplyContentService;
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this.conversationEntryMapper = conversationEntryMapper;
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}
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public Mono<DetectIntentResponseDTO> startQuickReplySession(QuickReplyScreenRequestDTO externalRequest) {
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String userPhoneNumber = externalRequest.user().telefono();
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if (userPhoneNumber == null || userPhoneNumber.isBlank()) {
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logger.warn("No phone number provided in request. Cannot manage conversation session without it.");
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return Mono
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.error(new IllegalArgumentException("Phone number is required to manage conversation sessions."));
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}
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return memoryStoreConversationService.getSessionByTelefono(userPhoneNumber)
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.flatMap(session -> Mono.just(session.sessionId()))
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.switchIfEmpty(Mono.fromCallable(SessionIdGenerator::generateStandardSessionId))
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.flatMap(sessionId -> {
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String userId = "user_by_phone_" + userPhoneNumber.replaceAll("[^0-9]", "");
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ConversationEntryDTO systemEntry = new ConversationEntryDTO(
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ConversationEntryEntity.SISTEMA,
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ConversationEntryType.INICIO,
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Instant.now(),
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"Pantalla :" + externalRequest.pantallaContexto() + " Agregada a la conversacion :",
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null,
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null);
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ConversationSessionDTO newSession = ConversationSessionDTO.create(sessionId, userId, userPhoneNumber).withPantallaContexto(externalRequest.pantallaContexto());
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return persistConversationTurn(newSession, systemEntry)
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.then(quickReplyContentService.getQuickReplies(externalRequest.pantallaContexto()))
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.map(quickReplyDTO -> new DetectIntentResponseDTO(sessionId, null, quickReplyDTO));
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});
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}
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public Mono<DetectIntentResponseDTO> manageConversation(ExternalConvRequestDTO externalRequest) {
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String userPhoneNumber = externalRequest.user().telefono();
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if (userPhoneNumber == null || userPhoneNumber.isBlank()) {
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logger.warn("No phone number provided in request. Cannot manage conversation session without it.");
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return Mono
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.error(new IllegalArgumentException("Phone number is required to manage conversation sessions."));
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}
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return memoryStoreConversationService.getSessionByTelefono(userPhoneNumber)
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.switchIfEmpty(Mono.error(
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new IllegalStateException("No quick reply session found for phone number")))
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.flatMap(session -> {
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return memoryStoreConversationService.getMessages(session.sessionId()).collectList().flatMap(messages -> {
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ConversationEntryDTO userEntry = ConversationEntryDTO.forUser(externalRequest.message());
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int lastInitIndex = IntStream.range(0, messages.size())
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.map(i -> messages.size() - 1 - i)
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.filter(i -> {
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ConversationMessageDTO message = messages.get(i);
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return message.type() == MessageType.SYSTEM;
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})
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.findFirst()
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.orElse(-1);
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long userMessagesCount;
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if (lastInitIndex != -1) {
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userMessagesCount = messages.subList(lastInitIndex + 1, messages.size()).stream()
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.filter(e -> e.type() == MessageType.USER)
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.count();
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} else {
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userMessagesCount = 0;
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}
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if (userMessagesCount == 0) { // Is the first user message in the Quick-Replies flow
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// This is the second message of the flow. Return the full list.
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return persistConversationTurn(session, userEntry)
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.then(quickReplyContentService.getQuickReplies(session.pantallaContexto()))
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.flatMap(quickReplyDTO -> {
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ConversationEntryDTO agentEntry = ConversationEntryDTO
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.forAgentWithMessage(quickReplyDTO.toString());
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return persistConversationTurn(session, agentEntry)
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.thenReturn(new DetectIntentResponseDTO(session.sessionId(), null, quickReplyDTO));
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});
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} else if (userMessagesCount == 1) { // Is the second user message in the QR flow
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// This is the third message of the flow. Filter and end.
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return persistConversationTurn(session, userEntry)
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.then(quickReplyContentService.getQuickReplies(session.pantallaContexto()))
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.flatMap(quickReplyDTO -> {
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List<QuestionDTO> matchedPreguntas = quickReplyDTO.preguntas().stream()
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.filter(p -> p.titulo().equalsIgnoreCase(externalRequest.message().trim()))
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.toList();
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if (!matchedPreguntas.isEmpty()) {
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// Matched question, return the answer
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String respuesta = matchedPreguntas.get(0).respuesta();
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QueryResultDTO queryResult = new QueryResultDTO(respuesta, null);
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DetectIntentResponseDTO response = new DetectIntentResponseDTO(session.sessionId(),
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queryResult, null);
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return memoryStoreConversationService
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.updateSession(session.withPantallaContexto(null))
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.then(persistConversationTurn(session,
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ConversationEntryDTO.forAgentWithMessage(respuesta)))
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.thenReturn(response);
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} else {
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// No match, delegate to Dialogflow
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return memoryStoreConversationService
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.updateSession(session.withPantallaContexto(null))
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.then(conversationManagerService.manageConversation(externalRequest));
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}
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});
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} else {
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// Should not happen. End the flow.
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return memoryStoreConversationService.updateSession(session.withPantallaContexto(null))
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.then(Mono.just(new DetectIntentResponseDTO(session.sessionId(), null,
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new QuickReplyDTO("Flow Error", null, null, null, Collections.emptyList()))));
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}
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});
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});
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}
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private Mono<Void> persistConversationTurn(ConversationSessionDTO session, ConversationEntryDTO entry) {
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logger.debug("Starting Write-Back persistence for quick reply session {}. Type: {}. Writing to Redis first.",
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session.sessionId(), entry.type().name());
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ConversationMessageDTO message = conversationEntryMapper.toConversationMessageDTO(entry);
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ConversationSessionDTO updatedSession = session.withLastMessage(message.text());
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return memoryStoreConversationService.saveSession(updatedSession)
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.then(memoryStoreConversationService.saveMessage(session.sessionId(), message))
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.doOnSuccess(v -> logger.info(
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"Entry saved to Redis for quick reply session {}. Type: {}. Kicking off async Firestore write-back.",
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session.sessionId(), entry.type().name()))
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.then(firestoreConversationService.saveSession(updatedSession)
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.then(firestoreConversationService.saveMessage(session.sessionId(), message))
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.doOnSuccess(fsVoid -> logger.debug(
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"Asynchronously (Write-Back): Entry successfully saved to Firestore for quick reply session {}. Type: {}.",
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session.sessionId(), entry.type().name()))
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.doOnError(fsError -> logger.error(
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"Asynchronously (Write-Back): Failed to save entry to Firestore for quick reply session {}. Type: {}: {}",
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session.sessionId(), entry.type().name(), fsError.getMessage(), fsError)))
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.doOnError(
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e -> logger.error("Error during primary Redis write for quick reply session {}. Type: {}: {}",
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session.sessionId(), entry.type().name(), e.getMessage(), e));
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}
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} |