added nonce creattion

app/Controllers/Http/AuthController.ts

@@ -1,7 +1,8 @@
-import { OpaqueTokenContract } from '@ioc:Adonis/Addons/Auth'
 import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext'
 import Logger from '@ioc:Adonis/Core/Logger'
-import User from 'App/Models/User'
+import Nonce from 'App/Models/Nonce'
+import Database from '@ioc:Adonis/Lucid/Database'
+import { DateTime } from 'luxon'
 
 type AuthSuccResult = {
 	notification: {
@@ -66,4 +67,30 @@ export default class AuthController {
 			Logger.error(error.message)
 		}
     }
+
+	public async nonce(ctx: HttpContextContract) {
+		const requestId = ctx.request.header('X-REQUEST-ID')
+
+		try {
+			this.deleteExpiredNonces()
+
+			const nonce = await Nonce.create({
+				requestId: requestId
+			})
+
+			return nonce.nonce
+		}
+		catch(err){
+			return ctx.response.forbidden(err)
+		}
+	}
+
+	private async deleteExpiredNonces(){
+		try {
+			await Database.from('nonces').where('expiry_date', '<', DateTime.now().toFormat('yyyy-MM-dd HH:mm:ss')).delete()
+		}
+		catch(err){
+			throw err
+		}
+	}
 }

app/Models/Nonce.ts

@@ -0,0 +1,29 @@
+import { DateTime } from 'luxon'
+import { BaseModel, beforeCreate, column } from '@ioc:Adonis/Lucid/Orm'
+import { v4 as uuidv4 } from 'uuid'
+
+export default class Nonce extends BaseModel {
+	public static selfAssignPrimaryKey = true
+
+	@column.dateTime({ autoCreate: true })
+	public createdAt: DateTime
+
+	@column.dateTime({ autoCreate: true, autoUpdate: true })
+	public updatedAt: DateTime
+
+	@column.dateTime()
+	public expiryDate : DateTime;
+
+  	@column()
+	public nonce : string;
+
+	@column({isPrimary: true})
+	public requestId: string;
+
+	@beforeCreate()
+	public static generateNonce( nonce : Nonce) {
+		nonce.nonce = uuidv4()
+		nonce.expiryDate = DateTime.now().plus({minutes: 10})
+	}
+
+}