mode todo in todo folder

server/routers/todo/model/todo/item.js

@@ -0,0 +1,23 @@
+const { Schema, model } = require('mongoose')
+
+const { TODO_ITEM_MODEL_NAME } = require('../../const')
+
+const schema = new Schema({
+    title: String,
+    done: { type: Boolean, default: false },
+    closed: Date,
+    created: {
+        type: Date, default: () => new Date().toISOString(),
+    },
+})
+
+schema.set('toJSON', {
+    virtuals: true,
+    versionKey: false,
+})
+
+schema.virtual('id').get(function () {
+    return this._id.toHexString()
+})
+
+exports.ItemModel = model(TODO_ITEM_MODEL_NAME, schema)

server/routers/todo/model/todo/list.js

@@ -0,0 +1,27 @@
+const { Schema, model } = require('mongoose')
+
+const { TODO_LIST_MODEL_NAME, TODO_ITEM_MODEL_NAME } = require('../../const')
+
+const schema = new Schema({
+    title: String,
+    created: {
+        type: Date, default: () => new Date().toISOString(),
+    },
+    items: [{ type: Schema.Types.ObjectId, ref: TODO_ITEM_MODEL_NAME }],
+})
+
+schema.set('toJSON', {
+    virtuals: true,
+    versionKey: false,
+})
+
+schema.virtual('id').get(function () {
+    return this._id.toHexString()
+})
+
+schema.method('addItem', async function (itemObjectId) {
+  this.items.push(itemObjectId)
+  await this.save()
+})
+
+exports.ListModel = model(TODO_LIST_MODEL_NAME, schema)