make AccountsServer more extensible

Author: arolave

packages/server/src/accounts-server.ts

@@ -344,7 +344,7 @@ export class AccountsServer {
         throw new AccountsError('User not found');
       }
 
-      const impersonatedUser = await this.db.findUserByUsername(username);
+      const impersonatedUser = await this.findUserByUsername(username);
       if (!impersonatedUser) {
         throw new AccountsError(`User ${username} not found`);
       }
@@ -772,7 +772,7 @@ export class AccountsServer {
    * @returns {Promise<void>} - Return a Promise.
    */
   public async sendVerificationEmail(address: string): Promise<void> {
-    const user = await this.db.findUserByEmail(address);
+    const user = await this.findUserByEmail(address);
     if (!user) {
       throw new AccountsError('User not found', { email: address });
     }
@@ -809,7 +809,7 @@ export class AccountsServer {
    * @returns {Promise<void>} - Return a Promise.
    */
   public async sendResetPasswordEmail(address: string): Promise<void> {
-    const user = await this.db.findUserByEmail(address);
+    const user = await this.findUserByEmail(address);
     if (!user) {
       throw new AccountsError('User not found', { email: address });
     }
@@ -837,7 +837,7 @@ export class AccountsServer {
    * @returns {Promise<void>} - Return a Promise.
    */
   public async sendEnrollmentEmail(address: string): Promise<void> {
-    const user = await this.db.findUserByEmail(address);
+    const user = await this.findUserByEmail(address);
     if (!user) {
       throw new AccountsError('User not found', { email: address });
     }