feat: use mongoose-sequence to increment order number

server/routers/dry-wash/model/order.js

@@ -1,5 +1,6 @@
 const { Schema, model } = require('mongoose')
 const { orderStatus } = require('./const')
+const { OrderNumberModel } = require('./order.number')
 
 const schema = new Schema({
     phone: {
@@ -28,9 +29,6 @@ const schema = new Schema({
         required: true
     },
     orderNumber: {
-        type: String,
-        required: true,
-        unique: true
     },
     status: {
         type: String,
@@ -52,6 +50,18 @@ const schema = new Schema({
     },
 })
 
+schema.pre('save', async function (next) {
+    if (this.isNew) {
+        const counter = await OrderNumberModel.findOneAndUpdate(
+            { _id: 'orderNumber' },
+            { $inc: { sequenceValue: 1 } },
+            { new: true, upsert: true }
+        )
+        this.orderNumber = counter.sequenceValue.toString()
+    }
+    next()
+})
+
 schema.set('toJSON', {
     virtuals: true,
     versionKey: false,

server/routers/dry-wash/model/order.number.js

@@ -0,0 +1,14 @@
+const { Schema, model } = require('mongoose')
+
+const schema = new Schema({
+  _id: {
+      type: String,
+      required: true,
+  },
+  sequenceValue: {
+      type: Number,
+      default: 0
+  }
+})
+
+exports.OrderNumberModel = model('dry-wash-order-number', schema)

server/routers/dry-wash/order.js

@@ -74,21 +74,6 @@ const VALIDATION_MESSAGES = {
     },
 }
 
-/**
- * Generates the next order number incrementing the last order number
- * @returns {Promise<string>}
- */
-const generateOrderNumber = async () => {
-    const lastOrder = await OrderModel.findOne().sort({ created: -1 })
-    if (lastOrder) {
-        const lastOrderNumber = parseInt(lastOrder.orderNumber ?? '0')
-        const nextOrderNumber = lastOrderNumber + 1
-        return String(nextOrderNumber)
-    }
-    
-    return '1' // number of the very first order
-}
-
 router.post('/create', async (req, res, next) => {
     const bodyErrors = []
 
@@ -144,9 +129,7 @@ router.post('/create', async (req, res, next) => {
             startWashTime: washing.begin,
             endWashTime: washing.end,
             location: washing.location,
-            orderNumber: await generateOrderNumber(),
             status: orderStatus.PROGRESS,
-            master: '',
             notes: '',
             created: new Date().toISOString(),
         })