# All files / controllers EvolutionWebhookController.js

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     /**
     * EvolutionWebhookController.js
     *
     * Controller for handling Evolution API webhooks
     * Processes incoming events from Evolution API
     *
     * @module controllers/EvolutionWebhookController
     */

    const { logger } = require('../config/logger');
    const EvolutionInstance = require('../models/EvolutionInstance');
    const eventBus = require('../core/whatsapp/EventBus');
    const Events = require('../core/whatsapp/CoreEvents');

    /**
     * Evolution Webhook Controller
     * Handles incoming webhooks from Evolution API
     */
    class EvolutionWebhookController {
      /**
       * Handle webhook from Evolution API
       * POST /api/webhooks/evolution/:tenantId
       */
      static async handleWebhook(req, res) {
        try {
          console.log('\n\n🔔🔔🔔 WEBHOOK RECEIVED 🔔🔔🔔');
          console.log('═══════════════════════════════════════════════════════════');
          console.log('⏰ Timestamp:', new Date().toISOString());
          console.log('📍 Tenant ID:', req.params.tenantId);
          console.log('📨 Event:', req.body.event);
          console.log('📱 Instance:', req.body.instance);
          console.log('\n📋 Headers:');
          console.log(JSON.stringify(req.headers, null, 2));
          console.log('\n📦 Body completo:');
          console.log(JSON.stringify(req.body, null, 2));
          console.log('═══════════════════════════════════════════════════════════\n');

          const tenantId = parseInt(req.params.tenantId);
          const event = req.body.event;
          const data = req.body.data || req.body;

          logger.info('🔔 Evolution webhook received', {
            tenantId,
            event,
            instance: data.instance,
            bodyKeys: Object.keys(req.body),
            dataKeys: Object.keys(data),
            fullBody: JSON.stringify(req.body).substring(0, 500)
          });

          // Acknowledge webhook immediately
          res.status(200).json({ success: true });

          // Process webhook asynchronously - pass instance name from root level
          await this.processWebhook(tenantId, event, data, req.body.instance);

        } catch (error) {
          logger.error('Error handling Evolution webhook', {
            error: error.message,
            stack: error.stack,
            body: req.body
          });

          // Still return 200 to prevent Evolution API from retrying
          res.status(200).json({ success: false, error: error.message });
        }
      }

      /**
       * Process webhook event
       * @param {number} tenantId - Tenant ID
       * @param {string} event - Event type
       * @param {Object} data - Event data
       * @param {string} instanceNameFromRoot - Instance name from root level
       */
      static async processWebhook(tenantId, event, data, instanceNameFromRoot) {
        try {
          console.log('\n🔄 PROCESSANDO WEBHOOK:');
          console.log('   Tenant ID:', tenantId);
          console.log('   Event:', event);
          console.log('   Instance (root):', instanceNameFromRoot);
          console.log('   Instance (data):', data.instance);

          // Instance name can be at root level or inside data
          const instanceName = instanceNameFromRoot || data.instance;

          if (!instanceName) {
            console.log('❌ ERRO: Webhook sem nome de instância');
            console.log('   Data keys:', Object.keys(data));
            logger.warn('Webhook received without instance name', { tenantId, event, dataKeys: Object.keys(data) });
            return;
          }

          console.log('   ✅ Instance name:', instanceName);
          console.log('   🔍 Buscando instância no banco...');

          // Get instance from database
          const instance = await EvolutionInstance.getByEvolutionId(instanceName);

          if (!instance) {
            console.log('   ❌ ERRO: Instância não encontrada no banco');
            logger.warn('Instance not found for webhook', { tenantId, instanceName, event });
            return;
          }

          console.log('   ✅ Instância encontrada:', instance.id, '-', instance.instance_name);
          console.log('   📌 Tipo de evento:', event);

          // Handle different event types
          switch (event) {
            case 'QRCODE_UPDATED':
            case 'qrcode.updated':
              console.log('   📱 Processando QR Code...');
              await this.handleQRCodeUpdate(instance, data);
              break;

            case 'CONNECTION_UPDATE':
            case 'connection.update':
              console.log('   🔌 Processando atualização de conexão...');
              await this.handleConnectionUpdate(instance, data);
              break;

            case 'MESSAGES_UPSERT':
            case 'messages.upsert':
              console.log('   💬 Processando mensagem recebida...');
              await this.handleMessageReceived(instance, data);
              break;

            case 'MESSAGES_UPDATE':
            case 'messages.update':
              console.log('   ✏️ Processando atualização de mensagem...');
              await this.handleMessageUpdate(instance, data);
              break;

            case 'SEND_MESSAGE':
            case 'send.message':
              console.log('   📤 Processando mensagem enviada...');
              await this.handleMessageSent(instance, data);
              break;

            default:
              console.log('   ⚠️ Evento não tratado:', event);
              logger.info('Unhandled webhook event', { event, instanceName });
          }

          console.log('   ✅ Webhook processado com sucesso!\n');

        } catch (error) {
          console.error('   ❌ ERRO ao processar webhook:', error.message);
          logger.error('Error processing webhook', {
            tenantId,
            event,
            error: error.message,
            stack: error.stack
          });
        }
      }

      /**
       * Handle QR code update
       * @param {Object} instance - Instance data
       * @param {Object} data - Event data
       */
      static async handleQRCodeUpdate(instance, data) {
        try {
          const qrCode = data.qrcode || data.qr || data.base64 || data.code;

          logger.info('QR code update received', {
            instanceId: instance.id,
            hasQrCode: !!qrCode,
            dataKeys: Object.keys(data)
          });

          if (!qrCode) {
            logger.warn('QR code update without QR data', { instanceId: instance.id, data });
            return;
          }

          logger.info('Updating QR code in database', { instanceId: instance.id });

          // Update instance with new QR code
          await EvolutionInstance.update(instance.id, {
            qr_code: qrCode,
            status: 'qr_code'
          });

          // Emit Socket.IO event to tenant
          const io = global.io;
          if (io) {
            const tenantNamespace = io.of(`/tenant/${instance.tenant_id}`);
            logger.info('Emitting QR code to socket', {
              tenantId: instance.tenant_id,
              instanceId: instance.id
            });

            // Emit both event names for compatibility
            tenantNamespace.emit('whatsapp-qr-updated', {
              instanceId: instance.id,
              instanceName: instance.instance_name,
              qrCode: qrCode
            });

            tenantNamespace.emit('qr-code', {
              instanceId: instance.id,
              instanceName: instance.instance_name,
              qrCode: qrCode
            });
          } else {
            logger.warn('Socket.IO not available');
          }

        } catch (error) {
          logger.error('Error handling QR code update', {
            instanceId: instance.id,
            error: error.message
          });
        }
      }

      /**
       * Handle connection status update
       * @param {Object} instance - Instance data
       * @param {Object} data - Event data
       */
      static async handleConnectionUpdate(instance, data) {
        try {
          const state = data.state || data.status;
          const phoneNumber = data.phoneNumber || data.phone;

          logger.info('Connection status updated', {
            instanceId: instance.id,
            state,
            phoneNumber
          });

          // Map Evolution API states to our status
          const statusMap = {
            'open': 'connected',
            'connecting': 'connecting',
            'close': 'disconnected',
            'qr': 'qr_code'
          };

          const newStatus = statusMap[state] || 'disconnected';

          // Update instance
          const updateData = { status: newStatus };

          if (phoneNumber) {
            updateData.phone_number = phoneNumber;
          }

          if (newStatus === 'connected') {
            updateData.last_connected_at = new Date().toISOString().slice(0, 19).replace('T', ' ');
            updateData.error_message = null;
            updateData.qr_code = null;

            // Fetch profile picture from Evolution API
            try {
              logger.info('Fetching profile picture for connected instance', {
                instanceId: instance.id,
                evolutionInstanceId: instance.evolution_instance_id
              });

              const instanceInfo = await EvolutionAPIService.getInstanceInfo(instance.evolution_instance_id);

              if (instanceInfo) {
                if (instanceInfo.profilePicUrl) {
                  updateData.profile_picture_url = instanceInfo.profilePicUrl;
                  logger.info('Profile picture URL saved', {
                    instanceId: instance.id,
                    profilePicUrl: instanceInfo.profilePicUrl
                  });
                }

                if (instanceInfo.profileName) {
                  updateData.profile_name = instanceInfo.profileName;
                  logger.info('Profile name saved', {
                    instanceId: instance.id,
                    profileName: instanceInfo.profileName
                  });
                }
              }
            } catch (profileError) {
              logger.error('Error fetching profile picture', {
                instanceId: instance.id,
                error: profileError.message
              });
              // Don't fail the connection update if profile fetch fails
            }
          }

          await EvolutionInstance.update(instance.id, updateData);

          // Emit Socket.IO event to tenant
          const io = global.io;
          if (io) {
            const tenantNamespace = io.of(`/tenant/${instance.tenant_id}`);

            const eventData = {
              instanceId: instance.id,
              instanceName: instance.instance_name,
              status: newStatus,
              phoneNumber: phoneNumber,
              profilePictureUrl: updateData.profile_picture_url,
              profileName: updateData.profile_name
            };

            // Emit multiple event names for compatibility
            tenantNamespace.emit('whatsapp-status-changed', eventData);
            tenantNamespace.emit('connection-update', eventData);

            logger.info('Emitted connection status to socket', {
              tenantId: instance.tenant_id,
              instanceId: instance.id,
              status: newStatus
            });
          }

        } catch (error) {
          logger.error('Error handling connection update', {
            instanceId: instance.id,
            error: error.message
          });
        }
      }

      /**
       * Handle incoming message
       * @param {Object} instance - Instance data
       * @param {Object} data - Event data
       */
      static async handleMessageReceived(instance, data) {
        try {
          console.log('\n      📨 PROCESSANDO MENSAGEM RECEBIDA:');
          console.log('      Instance ID:', instance.id);
          console.log('      Tenant ID:', instance.tenant_id);
          console.log('      Data keys:', Object.keys(data));
          console.log('      Has messages:', !!data.messages);
          console.log('      Message count:', data.messages?.length || 0);

          logger.info('Message received via Evolution webhook', {
            instanceId: instance.id,
            tenantId: instance.tenant_id,
            dataKeys: Object.keys(data),
            hasMessages: !!data.messages,
            messageCount: data.messages?.length || 0,
            fullData: JSON.stringify(data).substring(0, 1000)
          });

          // Transform Evolution API message format to our format
          const messages = data.messages || [data];

          console.log('      📋 Total de mensagens a processar:', messages.length);

          for (const message of messages) {
            console.log('\n      ➡️ Processando mensagem:');
            console.log('         Message keys:', Object.keys(message));
            console.log('         Message type:', message.messageType);
            console.log('         Has key:', !!message.key);
            console.log('         Remote JID:', message.key?.remoteJid);
            console.log('         From me:', message.key?.fromMe);

            // Ignorar mensagens enviadas por nós
            if (message.key?.fromMe) {
              console.log('         ⏭️ Ignorando mensagem enviada por nós');
              continue;
            }

            logger.info('Emitting message to event bus', {
              instanceId: instance.id,
              messageKeys: Object.keys(message),
              messageType: message.messageType,
              hasKey: !!message.key,
              keyRemoteJid: message.key?.remoteJid
            });

            console.log('         🚀 Emitindo para o event bus...');

            // Emit to event bus for processing
            eventBus.emit(Events.MESSAGE_RECEIVED, {
              channel: 'evolution',
              tenantId: instance.tenant_id,
              instanceId: instance.id,
              sessionId: instance.evolution_instance_id,
              upsert: {
                messages: [message],
                type: 'notify'
              },
              message: message
            });

            console.log('         ✅ Mensagem emitida para o event bus');
          }

          console.log('      ✅ Todas as mensagens processadas\n');

        } catch (error) {
          console.error('      ❌ ERRO ao processar mensagem:', error.message);
          console.error('      Stack:', error.stack);
          logger.error('Error handling message received', {
            instanceId: instance.id,
            error: error.message,
            stack: error.stack
          });
        }
      }

      /**
       * Handle message update (read, delivered, etc.)
       * @param {Object} instance - Instance data
       * @param {Object} data - Event data
       */
      static async handleMessageUpdate(instance, data) {
        try {
          logger.info('Message update received', {
            instanceId: instance.id,
            update: data
          });

          // Emit Socket.IO event to tenant
          const io = global.io;
          if (io) {
            const tenantNamespace = io.of(`/tenant/${instance.tenant_id}`);
            tenantNamespace.emit('whatsapp-message-update', {
              instanceId: instance.id,
              update: data
            });
          }

        } catch (error) {
          logger.error('Error handling message update', {
            instanceId: instance.id,
            error: error.message
          });
        }
      }

      /**
       * Handle message sent confirmation
       * @param {Object} instance - Instance data
       * @param {Object} data - Event data
       */
      static async handleMessageSent(instance, data) {
        try {
          logger.info('Message sent confirmation', {
            instanceId: instance.id,
            messageId: data.key?.id
          });

          // Emit Socket.IO event to tenant
          const io = global.io;
          if (io) {
            const tenantNamespace = io.of(`/tenant/${instance.tenant_id}`);
            tenantNamespace.emit('whatsapp-message-sent', {
              instanceId: instance.id,
              messageId: data.key?.id,
              status: 'sent'
            });
          }

        } catch (error) {
          logger.error('Error handling message sent', {
            instanceId: instance.id,
            error: error.message
          });
        }
      }
    }

    module.exports = EvolutionWebhookController;