feat: Intégration d'un assistant IA logisticien basé sur Gemini
- Ajout d'une Cloud Function `aiEquipmentProposal` utilisant le modèle Gemini avec function calling pour suggérer du matériel et des containers. - Implémentation de plusieurs outils (tools) côté serveur pour permettre à l'IA d'interagir avec Firestore : `search_equipment`, `check_availability_batch`, `get_past_events`, `search_event_reference` et `search_containers`. - Ajout de la dépendance `@google/generative-ai` dans le backend. - Création d'un service Flutter `AiEquipmentAssistantService` pour communiquer avec la nouvelle Cloud Function. - Ajout d'une interface de dialogue `AiEquipmentAssistantDialog` permettant aux utilisateurs de discuter avec l'IA pour affiner les propositions de matériel. - Intégration de l'assistant IA dans la section de gestion du matériel des événements (`EventAssignedEquipmentSection`). - Mise à jour de `DataService` avec de nouvelles méthodes de recherche et de vérification de disponibilité optimisées pour l'assistant. - Activation du mode développement et configuration des identifiants de test dans `env.dart`. - Optimisation des paramètres de la Cloud Function (timeout de 300s et 1GiB de RAM) pour supporter les traitements IA.
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ElPoyo
178
em2rp/lib/services/ai_equipment_assistant_service.dart
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178
em2rp/lib/services/ai_equipment_assistant_service.dart
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import 'dart:async';
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import 'package:em2rp/models/event_model.dart';
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import 'package:em2rp/services/api_service.dart';
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import 'package:em2rp/utils/debug_log.dart';
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/// Représente un tour de conversation dans le chat.
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class AiAssistantChatTurn {
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final bool isUser;
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final String text;
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const AiAssistantChatTurn({required this.isUser, required this.text});
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}
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/// Un item proposé par l'IA dans la liste de matériel.
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class AiEquipmentProposalItem {
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final String equipmentId;
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final int quantity;
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final String rationale;
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const AiEquipmentProposalItem({
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required this.equipmentId,
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required this.quantity,
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required this.rationale,
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});
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}
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/// Proposition complète retournée par l'IA.
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class AiEquipmentProposal {
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final String summary;
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final List<AiEquipmentProposalItem> items;
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/// Équipements individuels prêts à être injectés dans l'état local de l'événement.
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final List<EventEquipment> asEventEquipment;
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/// IDs des containers (flight cases) proposés par l'IA.
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final List<String> containerIds;
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const AiEquipmentProposal({
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required this.summary,
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required this.items,
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required this.asEventEquipment,
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required this.containerIds,
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});
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}
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/// Réponse complète de l'assistant IA (message + proposition optionnelle).
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class AiEquipmentAssistantResponse {
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final String assistantMessage;
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final AiEquipmentProposal? proposal;
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const AiEquipmentAssistantResponse({
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required this.assistantMessage,
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this.proposal,
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});
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}
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/// Service assistant IA logisticien.
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/// Délègue tous les appels Gemini à la Cloud Function [aiEquipmentProposal].
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/// L'authentification Firebase (token Bearer) suffit — aucune clé API côté client.
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class AiEquipmentAssistantService {
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final ApiService _apiService;
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AiEquipmentAssistantService({ApiService? apiService})
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: _apiService = apiService ?? FirebaseFunctionsApiService();
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/// Envoie un message et retourne la réponse de l'assistant IA.
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Future<AiEquipmentAssistantResponse> generateProposal({
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required DateTime startDate,
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required DateTime endDate,
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required List<AiAssistantChatTurn> history,
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required String userMessage,
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String? eventTypeId,
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String? excludeEventId,
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List<EventEquipment> currentAssignedEquipment = const [],
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List<EventEquipment> workingProposalEquipment = const [],
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}) async {
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final payload = <String, dynamic>{
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'startDate': startDate.toIso8601String(),
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'endDate': endDate.toIso8601String(),
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'userMessage': userMessage.trim(),
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'history': history
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.where((turn) => turn.text.trim().isNotEmpty)
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.map((turn) => {'isUser': turn.isUser, 'text': turn.text.trim()})
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.toList(),
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'currentEquipment': currentAssignedEquipment
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.map((eq) => {'equipmentId': eq.equipmentId, 'quantity': eq.quantity})
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.toList(),
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'workingProposal': workingProposalEquipment
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.map((eq) => {'equipmentId': eq.equipmentId, 'quantity': eq.quantity})
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.toList(),
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};
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if (eventTypeId != null) payload['eventTypeId'] = eventTypeId;
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if (excludeEventId != null) payload['excludeEventId'] = excludeEventId;
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try {
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DebugLog.info('[AiEquipmentAssistantService] Calling aiEquipmentProposal Cloud Function');
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final result = await _apiService.call('aiEquipmentProposal', payload);
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final assistantMessage = result['assistantMessage']?.toString().trim() ?? '';
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final proposal = _parseProposal(result['proposal']);
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DebugLog.info(
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'[AiEquipmentAssistantService] Response received, items: ${proposal?.items.length ?? 0}',
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);
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return AiEquipmentAssistantResponse(
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assistantMessage: assistantMessage.isNotEmpty
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? assistantMessage
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: 'Je n\'ai pas pu générer de réponse.',
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proposal: proposal,
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);
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} on ApiException catch (e) {
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DebugLog.error('[AiEquipmentAssistantService] API error', e);
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if (e.isUnauthorized) {
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throw Exception('Vous n\'êtes pas authentifié. Reconnectez-vous et réessayez.');
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}
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throw Exception('Erreur du service IA (${e.statusCode}): ${e.message}');
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} catch (e) {
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DebugLog.error('[AiEquipmentAssistantService] Error', e);
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rethrow;
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}
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}
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AiEquipmentProposal? _parseProposal(dynamic rawProposal) {
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if (rawProposal == null || rawProposal is! Map<String, dynamic>) return null;
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final proposalItems = <AiEquipmentProposalItem>[];
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final eventEquipmentList = <EventEquipment>[];
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final containerIds = <String>[];
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final rawItems = rawProposal['items'];
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if (rawItems is List) {
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for (final rawItem in rawItems) {
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if (rawItem is! Map) continue;
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final item = Map<String, dynamic>.from(rawItem);
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final equipmentId = item['equipmentId']?.toString().trim() ?? '';
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final quantity = int.tryParse(item['quantity']?.toString() ?? '1') ?? 1;
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if (equipmentId.isEmpty || quantity <= 0) continue;
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final rationale = item['rationale']?.toString().trim() ?? 'Proposition IA';
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proposalItems.add(AiEquipmentProposalItem(
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equipmentId: equipmentId,
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quantity: quantity,
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rationale: rationale,
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));
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eventEquipmentList.add(EventEquipment(equipmentId: equipmentId, quantity: quantity));
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}
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}
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final rawContainers = rawProposal['containers'];
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if (rawContainers is List) {
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for (final rawContainer in rawContainers) {
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if (rawContainer is! Map) continue;
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final container = Map<String, dynamic>.from(rawContainer);
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final containerId = container['containerId']?.toString().trim() ?? '';
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if (containerId.isNotEmpty) {
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containerIds.add(containerId);
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}
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}
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}
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if (proposalItems.isEmpty && containerIds.isEmpty) return null;
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return AiEquipmentProposal(
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summary: rawProposal['summary']?.toString().trim().isNotEmpty == true
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? rawProposal['summary'].toString().trim()
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: 'Proposition matériel générée automatiquement.',
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items: proposalItems,
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asEventEquipment: eventEquipmentList,
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containerIds: containerIds,
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);
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}
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}
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