update the stock by qr code

Author: puppe1990

app/controllers/api/v1/bling_controller.rb

@@ -0,0 +1,35 @@
+module Api
+  module V1
+    class BlingController < ApplicationController
+      def update_stock
+        warehouse_id = params[:warehouse_id].presence || 
+                      Warehouse.find_by(account_id: current_tenant, is_default: true)&.bling_id ||
+                      Warehouse.first&.bling_id
+
+        result = Services::Bling::CreateStockRecord.call(
+          warehouse_id: warehouse_id,
+          product_id: params[:product_id],
+          quantity: params[:quantity],
+          operation: params[:operation],
+          notes: params[:notes],
+          tenant: current_tenant
+        )
+
+        if result.success?
+          render json: { success: true, data: result.data }
+        else
+          render json: { success: false, error: result.error }, status: :unprocessable_entity
+        end
+      end
+
+      private
+
+      def warehouse_not_found
+        render json: { 
+          success: false, 
+          error: "No warehouse found for this account" 
+        }, status: :unprocessable_entity
+      end
+    end
+  end
+end 

app/controllers/products_controller.rb

@@ -165,20 +165,46 @@ def scan_qr_code
   def update_stock_from_qr
     @product = Product.find(params[:id])
     quantity = params[:quantity].to_i
+    operation = params[:operation]
 
     begin
-      ActiveRecord::Base.transaction do
-        # Create a new stock record or update existing
-        if @product.stock.nil?
-          @product.create_stock(quantity: quantity)
-        else
-          @product.stock.update!(quantity: quantity)
+      # Only update stock in Bling if bling_id is present
+      if @product.bling_id.present?
+        result = Services::Bling::CreateStockRecord.call(
+          warehouse_id: params[:warehouse_id],
+          product_id: @product.bling_id,
+          quantity: quantity,
+          operation: operation,
+          tenant: current_tenant,
+          notes: params[:notes]
+        )
+
+        unless result.success?
+          error_message = if result.error.include?('TOO_MANY_REQUESTS')
+                           'Rate limit exceeded. Please wait a few seconds and try again.'
+                         else
+                           "Bling API Error: #{result.error}"
+                         end
+          raise StandardError, error_message
         end
 
-        render json: { success: true, message: 'Stock updated successfully' }
+        render json: { 
+          success: true, 
+          message: 'Stock updated successfully in Bling',
+          bling_sync: true
+        }
+      else
+        render json: { 
+          success: false, 
+          error: 'Product does not have a Bling ID'
+        }, status: :unprocessable_entity
       end
     rescue StandardError => e
-      render json: { success: false, error: e.message }, status: :unprocessable_entity
+      render json: { 
+        success: false, 
+        error: e.message,
+        retry_allowed: e.message.include?('Rate limit exceeded')
+      }, status: :unprocessable_entity
     end
   end
 

app/models/services/bling/create_stock_record.rb

@@ -0,0 +1,110 @@
+# frozen_string_literal: true
+
+require 'net/http'
+require 'uri'
+require 'json'
+
+module Services
+  module Bling
+    class CreateStockRecord < ApplicationService
+      VALID_OPERATIONS = {
+        'B' => 'balanço',
+        'E' => 'entrada',
+        'S' => 'saída'
+      }.freeze
+
+      attr_reader :warehouse_id, :product_id, :quantity, :operation, :price, :cost, :notes, :tenant
+
+      def initialize(warehouse_id:, product_id:, quantity:, operation:, tenant:, price: nil, cost: nil, notes: nil)
+        @warehouse_id = warehouse_id
+        @product_id = product_id
+        @quantity = quantity
+        @operation = operation.to_s.upcase
+        @price = price
+        @cost = cost
+        @notes = notes
+        @tenant = tenant
+      end
+
+      def call
+        return missing_warehouse_error if warehouse_id.nil?
+        return invalid_operation_error unless valid_operation?
+
+        url = URI("https://www.bling.com.br/Api/v3/estoques")
+
+        http = Net::HTTP.new(url.host, url.port)
+        http.use_ssl = true
+
+        request = Net::HTTP::Post.new(url)
+        request["Accept"] = "application/json"
+        request["Content-Type"] = "application/json"
+        request["Authorization"] = "Bearer #{bling_token}"
+        print('payload_tetas')
+        print(build_payload.to_json)
+        request.body = build_payload.to_json
+
+        response = http.request(request)
+        handle_response(response)
+      rescue StandardError => e
+        Rails.logger.error "Bling API Error: #{e.message}"
+        OpenStruct.new(success?: false, error: e.message)
+      end
+
+      private
+
+      def valid_operation?
+        VALID_OPERATIONS.key?(@operation)
+      end
+
+      def invalid_operation_error
+        OpenStruct.new(
+          success?: false,
+          error: "Invalid operation. Accepted values: B (#{VALID_OPERATIONS['B']}), " \
+                "E (#{VALID_OPERATIONS['E']}), S (#{VALID_OPERATIONS['S']})"
+        )
+      end
+
+      def missing_warehouse_error
+        OpenStruct.new(
+          success?: false,
+          error: "No warehouse found. Please set up a warehouse first."
+        )
+      end
+
+      def build_payload
+        {
+          deposito: {
+            id: warehouse_id
+          },
+          operacao: operation,
+          produto: {
+            id: product_id
+          },
+          quantidade: quantity.to_f,
+          preco: price&.to_f,
+          custo: cost&.to_f,
+          observacoes: notes
+        }.compact
+      end
+
+      def bling_token
+        @bling_token ||= BlingDatum.find_by(account_id: tenant).access_token
+      end
+
+      def handle_response(response)
+        case response.code.to_i
+        when 201, 200
+          OpenStruct.new(
+            success?: true,
+            data: JSON.parse(response.body)
+          )
+        else
+          OpenStruct.new(
+            success?: false,
+            error: "API Error: #{response.code} - #{response.body}"
+          )
+        end
+      end
+    end
+  end
+end 

app/models/services/product/generate_qr_code.rb

@@ -18,7 +18,8 @@ def call(for_download: false)
         object = {
           id: @product.id,
           account_id: @product.account_id,
-          sku: @product.decorate.sku
+          sku: @product.decorate.sku,
+          bling_id: @product.bling_id
         }
 
         qr_code = RQRCode::QRCode.new(object.to_json)