add migration of users, user_contacts and email_opt_in

backend/src/config/index.ts

@@ -10,7 +10,7 @@ Decimal.set({
 })
 
 const constants = {
-  DB_VERSION: '0047-messages_tables',
+  DB_VERSION: '0048-add_user_contacts_table',
   DECAY_START_TIME: new Date('2021-05-13 17:46:31-0000'), // GMT+0
   LOG4JS_CONFIG: 'log4js-config.json',
   // default log level on production should be info

database/entity/User.ts

@@ -1 +1 @@
-export { User } from './0047-add_user_contacts_table/User'
+export { User } from './0048-add_user_contacts_table/User'

database/entity/UserContact.ts

@@ -1 +1 @@
-export { UserContact } from './0047-add_user_contacts_table/UserContact'
+export { UserContact } from './0048-add_user_contacts_table/UserContact'

database/migrations/0048-add_user_contacts_table.ts

@@ -63,8 +63,10 @@ export async function upgrade(queryFn: (query: string, values?: any[]) => Promis
 }
 
 export async function downgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
-  // reconstruct the previous email back from contacts to users table
+  // this step comes after verification and test
   await queryFn('ALTER TABLE users ADD COLUMN email varchar(255) NULL AFTER privkey;')
+
+  // reconstruct the previous email back from contacts to users table
   const contacts = await queryFn(`SELECT c.id, c.email, c.user_id FROM user_contacts as c`)
   for (const id in contacts) {
     const contact = contacts[id]